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Question 2341Question →

Which of the following statements correctly distinguishes between a Censure Motion and a No-Confidence Motion in the Lok Sabha?

Show answer & explanation

Answer: A Censure Motion must state the specific reasons or grounds on which it is based, whereas a No-Confidence Motion does not require stating any specific grounds.

Answer

A Censure Motion must state the specific reasons or grounds on which it is based, whereas a No-Confidence Motion does not require stating any specific grounds.
The correct statement highlights that a Censure Motion must state the specific reason or policy failure for which it is moved, whereas a No-Confidence Motion requires no specific grounds to be listed when sought for leave in the Lok Sabha.

Step-by-Step Solution

1
Analyze the constitutional and procedural origin of executive responsibility in the Union Legislature.
Under Article 75(3) of the Constitution of India, the Council of Ministers is collectively responsible to the Lok Sabha.
This responsibility is enforced through parliamentary motions exclusively in the Lok Sabha.
2
Compare the procedural requirements for introducing a Censure Motion versus a No-Confidence Motion.
Rule 198 of the Lok Sabha Rules governs the No-Confidence Motion, which does not require stating any specific reasons. Conversely, a Censure Motion must explicitly state the grounds, specific policies, or actions being censured.
Censure focuses on specific errors of commission/omission, whereas No-Confidence assesses the government's general right to stay in office.
3
Evaluate the consequences of passing each motion.
If a Censure Motion passes, the Council of Ministers is expected to seek a vote of confidence, but resignation is not mandatory. If a No-Confidence Motion passes, the ministry must immediately resign.
A No-Confidence Motion directly tests the majority support required to maintain office.

Key Concept

Procedural distinctions between Censure Motion and No-Confidence Motion in the Lok Sabha
Estimated Time:1m 15s
Question 2342Question →

Four senior researchers—Amir, Bina, Caleb, and Divya—are assigned to four distinct laboratories: Genomics, Robotics, Photonics, and Quantum. Each researcher works in either the Morning shift or the Evening shift, such that exactly two researchers work in the Morning shift and two in the Evening shift. The assignments adhere to the following conditions:

1. Amir works in the Morning shift, but is assigned to neither the Genomics lab nor the Quantum lab.
2. Bina works in the Photonics lab.
3. Caleb works in the Evening shift.
4. The researcher assigned to the Genomics lab works in the Evening shift.
5. The researcher assigned to the Quantum lab works in the Morning shift.

Based on the information above, which of the following statements is definitely true?

Show answer & explanation

Answer: Divya is assigned to the Quantum lab on the Morning shift.

Answer

Divya is assigned to the Quantum lab on the Morning shift.
Through step-by-step logical elimination, the two Morning shift positions are filled by Amir in Robotics and the Quantum researcher. Since Amir, Bina (Photonics), and Caleb (Genomics, Evening) are accounted for, Divya is unambiguously assigned to the Quantum lab on the Morning shift.

Step-by-Step Solution

1
Analyze shift breakdown by lab.
Quantum lab is Morning shift (Condition 5). Genomics lab is Evening shift (Condition 4).
Establishing the shift associated with each laboratory simplifies researcher mapping.
2
Determine Amir's laboratory and shift.
Amir works Morning shift (Condition 1). Since he cannot be in Genomics or Quantum, and Bina is in Photonics (Condition 2), Amir must be in Robotics on the Morning shift.
Amir's morning shift constraint leaves Robotics as his only possible lab.
3
Identify all Morning shift positions.
The two Morning shift slots are filled by Amir (Robotics) and the Quantum researcher.
Exactly two researchers work the Morning shift.
4
Determine shifts for Bina and Caleb.
Since Bina (Photonics) is not in Morning shift, Bina works Evening shift. Caleb works Evening shift (Condition 3). Therefore, Caleb is in Genomics.
Genomics is an Evening shift lab, matching Caleb's Evening shift assignment.
5
Assign the remaining researcher, Divya.
Divya must be assigned to Quantum on the Morning shift.
Divya is the only researcher remaining for the Quantum (Morning) slot.

Key Concept

Analytical Grouping and Multi-Variable Deduction
Question 2343Question →

Which of the following statements regarding fluid dynamics, surface tension, and viscosity in everyday phenomena are correct?

Select all that apply

Show answer & explanation

Answer: Detergents added to water decrease its surface tension, enabling the solution to wet fabrics and loosen dirt particles more effectively.; The dynamic viscosity of liquids generally decreases as temperature increases, causing warm liquids like syrup or motor oil to flow more easily.

Answer

The correct statements are the statement regarding detergents decreasing water's surface tension to enhance wetting, and the statement regarding the decrease of liquid viscosity with increasing temperature.
Detergents lower water surface tension to improve wetting and cleaning efficiency. Furthermore, increasing temperature reduces liquid viscosity by weakening intermolecular cohesion, allowing warm liquids to flow faster.

Step-by-Step Solution

1
Analyze the action of detergents on surface tension.
Detergents act as surfactants, disrupting hydrogen bonding between water molecules and lowering surface tension to allow penetration into fabric pores.
Lower surface tension facilitates contact angle reduction and better cleaning.
2
Examine the effect of temperature on liquid viscosity.
Increasing temperature increases molecular kinetic energy and reduces cohesive forces in liquids, decreasing viscosity.
Viscosity in liquids depends inversely on temperature.
3
Evaluate the mechanism supporting a floating steel needle.
The needle rests on an indented surface film created by surface tension forces acting upward along the contact line, rather than static fluid displacement (Archimedes' principle).
Density of steel exceeds water density, making buoyancy insufficient.
4
Evaluate oil spreading behavior on water.
Water possesses a higher surface tension than oil ( 72 mN/m~72\text{ mN/m} for water vs  32 mN/m~32\text{ mN/m} for oil), creating a net outward force that pulls the oil film thin.
Spreading coefficient requires the supporting liquid to have higher surface tension than the spreading liquid.

Key Concept

Surface Tension, Viscosity, and Fluid Properties in Everyday Applications
Question 2344Question →

With reference to modern digital communication protocols and cryptographic security mechanisms, consider the following statements:

1. Perfect Forward Secrecy (PFS) ensures that the compromise of a long-term server private key does not reveal past session keys.
2. Quantum Key Distribution (QKD) relies on the principles of quantum mechanics, such that any attempt by an eavesdropper to measure the quantum state inherently alters it, revealing the intrusion.
3. In Zero Trust Architecture (ZTA), implicit trust is granted to user devices once they successfully pass perimeter firewall authentication within the internal network.

Which of the statements given above are correct?

Show answer & explanation

Answer: 1 and 2 only

Answer

1 and 2 only
The option stating '1 and 2 only' is correct. Perfect Forward Secrecy ensures past session confidentiality despite private key compromise by employing ephemeral key exchange mechanisms. Quantum Key Distribution guarantees eavesdropping detection because observing quantum states inevitably alters them. Zero Trust Architecture systematically eliminates implicit trust based on network position, requiring continuous verification for every access attempt.

Step-by-Step Solution

1
Evaluate Statement 1 regarding Perfect Forward Secrecy (PFS).
Statement 1 is correct.
PFS generates unique session keys for every session using ephemeral key exchange algorithms (such as Ephemeral Diffie-Hellman). Therefore, even if an attacker later obtains the server's long-term private key, past recorded sessions cannot be decrypted.
2
Evaluate Statement 2 regarding Quantum Key Distribution (QKD).
Statement 2 is correct.
QKD leverages quantum mechanical properties (such as photon polarization states). According to quantum physics principles, any attempt to observe or eavesdrop on quantum key generation alters the quantum state, creating detectable transmission errors.
3
Evaluate Statement 3 regarding Zero Trust Architecture (ZTA).
Statement 3 is incorrect.
Zero Trust Architecture operates on the core axiom 'never trust, always verify'. Unlike traditional perimeter defense, ZTA assumes the internal network is untrusted and continuously verifies identity, context, and security posture for every access request.

Key Concept

Advanced Cryptographic Protocols and Zero Trust Security Architecture
Question 2345Question →

Which of the following ecological terms refers specifically to species that are naturally restricted to a defined geographic region and are not found anywhere else in the world?

Show answer & explanation

Answer: Endemic species

Answer

Endemic species are organisms that are naturally unique to a specific geographical location and are found nowhere else on Earth.
Endemic species are defined by their strict spatial restriction to a specific area due to geographical barriers or ecological niches, making them naturally absent from other parts of the world.

Step-by-Step Solution

1
Identify the defining criteria of endemism.
Endemism refers to the state of a species being native and restricted to a single defined habitat or location.
Differentiating species based on geographic distribution range isolates endemic species from introduced or cosmopolitan species.

Key Concept

Concept of Endemism in Biodiversity
Estimated Time:45s
Question 2346Question →

Which type of cyber threat involves malicious software designed to block access to a computer system or encrypt user data until a sum of money is paid to the attacker?

Show answer & explanation

Answer: Ransomware

Answer

Ransomware
The term Ransomware specifically refers to malicious software (malware) that uses encryption to hold a victim's information at ransom. The victim's critical data is encrypted so that they cannot access files, databases, or applications, and a ransom is demanded to restore access.

Step-by-Step Solution

1
Analyze the core objective described in the question stem
The target malware encrypts files/systems and demands financial payment for decryption.
Identifying the specific malicious behavior helps distinguish between cyber attack vectors.
2
Evaluate the defining characteristic of Ransomware
Ransomware directly corresponds to file encryption coupled with extortion.
The prefix 'ransom' signifies the demand for payment to release compromised assets.

Key Concept

Classification of Cyber Malware and Threat Vectors
Estimated Time:45s
Question 2347Question →

Consider the following statements regarding types of unemployment and skill development initiatives in India:

1. Frictional unemployment occurs when individuals are temporarily unemployed while actively transitioning from one job to another or searching for better opportunities.
2. Under the National Apprenticeship Promotion Scheme (NAPS), the Government of India provides financial support by sharing stipend costs directly transferred to apprentices.
3. Seasonal unemployment primarily affects workers in the formal urban manufacturing sector due to rapid technological automation.

Which of the statements given above is/are correct?

Show answer & explanation

Answer: 1 and 2 only

Answer

1 and 2 only are correct statements.
Statement 1 correctly defines frictional unemployment as a temporary search period between job transitions. Statement 2 accurately describes NAPS, under which government stipend support is directly disbursed via Direct Benefit Transfer (DBT) to apprentices. Statement 3 is incorrect because seasonal unemployment is linked to seasonal industries like agriculture, sugar mills, and tourism, whereas unemployment arising from technological advancement in manufacturing is termed structural unemployment.

Step-by-Step Solution

1
Analyze Statement 1
Statement 1 is correct.
Frictional unemployment refers to the short-term period when workers are between jobs or searching for new positions matching their skill sets.
2
Analyze Statement 2
Statement 2 is correct.
The National Apprenticeship Promotion Scheme (NAPS) includes Direct Benefit Transfer (DBT) component where the central government directly reimburses part of the prescribed stipend to apprentices' bank accounts.
3
Analyze Statement 3
Statement 3 is incorrect.
Seasonal unemployment occurs during specific times of the year when demand for labor decreases, predominantly observed in agriculture and agro-based industries, not in formal urban manufacturing due to technological automation (which is structural unemployment).

Key Concept

Classification of Unemployment Types and Implementation of National Skill Initiatives
Question 2348Question →

Match each Indian space mission with its corresponding primary scientific objective or major capability.

Click a left item, then click its matching right item

Items

Chandrayaan-3
Aditya-L1
AstroSat
NISAR

Matches

Show answer & explanation

Answer

Chandrayaan-3 matches lunar soft-landing and roving; Aditya-L1 matches solar observation from L1; AstroSat matches multi-wavelength space astronomy observatory; NISAR matches joint ISRO-NASA dual-frequency radar mission.
Each mission correctly aligns with its primary objective: Chandrayaan-3 achieved a historic lunar soft landing; Aditya-L1 observes the Sun from L1; AstroSat serves as a multi-wavelength space telescope; and NISAR is a collaborative radar Earth-observation mission between NASA and ISRO.

Step-by-Step Solution

1
Identify the primary objective of lunar exploration mission Chandrayaan-3
Chandrayaan-3 corresponds to soft-landing and rover exploration on the Moon.
Chandrayaan-3 is ISRO's third lunar exploration mission, designed for lunar surface landing.
2
Identify the trajectory and scientific focus of Aditya-L1
Aditya-L1 corresponds to continuous solar atmospheric observation from Sun-Earth L1.
The mission designation 'L1' refers to the first Lagrange point of the Sun-Earth system.
3
Determine the operational nature of AstroSat
AstroSat corresponds to India's dedicated multi-wavelength astronomical satellite.
AstroSat carries five payloads covering optical, UV, and X-ray spectral bands.
4
Match NISAR to its cooperative agency framework and payload type
NISAR corresponds to the joint ISRO-NASA dual-frequency synthetic aperture radar project.
NISAR stands for NASA-ISRO Synthetic Aperture Radar.

Key Concept

Major Indian space exploration missions, astronomy satellites, and international space technology collaborations.
Question 2349Question →

Consider the following statements regarding Quantum Key Distribution (QKD) and modern cryptographic mechanisms:

1. Quantum Key Distribution uses the principles of quantum mechanics to securely establish a shared secret key between two communicating parties rather than directly transmitting the encrypted secret payload over the quantum channel.
2. In QKD systems, any interception or measurement attempt by an eavesdropper alters the quantum state of the photons, immediately revealing the presence of intrusion to the communicating parties.
3. Post-Quantum Cryptography (PQC) refers to cryptographic protocols that require quantum hardware and quantum entanglement to execute encryption on classical computing systems.

Which of the statements given above is/are correct?

Show answer & explanation

Answer: 1 and 2 only

Answer

1 and 2 only
The option stating '1 and 2 only' is correct. Quantum Key Distribution relies on quantum optics to generate and distribute random symmetric keys, and any eavesdropping attempt perturbs photon states, alerting users to security breaches. Conversely, Post-Quantum Cryptography consists of software-based classical mathematical algorithms intended to run on conventional hardware to resist attacks from quantum computers, making the third statement false.

Step-by-Step Solution

1
Analyze Statement 1 regarding QKD payload transmission
Statement 1 is correct. QKD is a key-establishment mechanism that uses quantum communications to securely distribute random key streams; the actual message payload is encrypted and sent separately over traditional classical communication channels using symmetric encryption.
QKD channels are optimized for photon state transfer to exchange cryptographic key material, not for high-volume data payload transport.
2
Analyze Statement 2 regarding eavesdropping detection in QKD
Statement 2 is correct. Based on fundamental quantum physics principles such as the Heisenberg Uncertainty Principle and the No-Cloning Theorem, measuring or eavesdropping on polarized photon states disturbs the quantum state, introducing detectable error rates (Quantum Bit Error Rate) that alert legitimate parties.
Quantum states cannot be observed or measured without altering their superposition states.
3
Analyze Statement 3 regarding Post-Quantum Cryptography (PQC)
Statement 3 is incorrect. Post-Quantum Cryptography (PQC) refers to mathematical algorithms (such as lattice-based or hash-based cryptography) designed to run on standard classical computers while remaining secure against breaking attacks by future quantum computers (e.g., Shor's algorithm). It does not require quantum hardware or quantum entanglement.
PQC relies on complex classical mathematical problems hard for both classical and quantum systems, whereas QKD requires specialized quantum hardware links.

Key Concept

Quantum Key Distribution vs. Post-Quantum Cryptography
Question 2350Question →

Consider the following statements regarding India's Ballistic Missile Defence (BMD) Program developed by the Defence Research and Development Organisation (DRDO):

1. The Prithvi Air Defence (PAD) missile system is designed primarily for exo-atmospheric interception of incoming enemy ballistic missiles.
2. The Advanced Air Defence (AAD) missile is a single-stage, solid-fuel interceptor intended for endo-atmospheric interception at lower altitudes.
3. The Swordfish radar used in the BMD network is a short-range optical sensor system deployed exclusively for naval surface vessels.

Which of the statements given above is/are correct?

Show answer & explanation

Answer: 1 and 2 only

Answer

Statements 1 and 2 are correct, while statement 3 is incorrect. Therefore, the option selecting '1 and 2 only' is the correct answer.
The correct answer identifies that statements 1 and 2 are factual regarding India's double-tiered Ballistic Missile Defence network. The Prithvi Air Defence (PAD) missile acts as the high-altitude exo-atmospheric interceptor, while the Advanced Air Defence (AAD) missile acts as the low-altitude endo-atmospheric interceptor. The third statement is incorrect because the Swordfish is a long-range tracking radar specifically designed to acquire and track incoming ballistic missile threats across vast distances, rather than a short-range optical naval sensor.

Step-by-Step Solution

1
Analyze statement 1 regarding Prithvi Air Defence (PAD).
PAD (Pradyumna) is a two-stage interceptor capable of exo-atmospheric interception (interception outside the Earth's atmosphere at altitudes of 50–80 km). Statement 1 is correct.
Verify the target altitude domain for the high-altitude layer of India's BMD Phase-I.
2
Analyze statement 2 regarding Advanced Air Defence (AAD).
AAD (Ashwin) is a single-stage, solid-propellant missile engineered for endo-atmospheric interception (interception inside the atmosphere at altitudes of 15–30 km). Statement 2 is correct.
Verify the lower-tier air defense interceptor specifications.
3
Analyze statement 3 regarding the Swordfish radar.
Swordfish is an L-band/X-band Long-Range Tracking Radar (LRTR) derived from the Israeli Green Pine radar, capable of tracking incoming ballistic targets at long ranges (600–800+ km), not a short-range optical naval sensor. Statement 3 is incorrect.
Distinguish target detection/tracking radar capabilities from optical surface sensors.

Key Concept

Two-tier Ballistic Missile Defence (BMD) system architecture (PAD for exo-atmospheric and AAD for endo-atmospheric interception, supported by long-range tracking radar).
Question 2351Question →

Arrange the following major Indian space research and astronomy missions in chronological order of their launch dates, from the earliest to the latest:

Drag items to arrange them in the correct order

Show answer & explanation

Answer

The correct chronological sequence from earliest to latest launch is: Chandrayaan-1 (October 2008), Mars Orbiter Mission (November 2013), AstroSat (September 2015), Aditya-L1 (September 2023), and XPoSat (January 2024).
The precise launch dates for ISRO's major astronomy and space science probes in chronological sequence are Chandrayaan-1 (22 October 2008), Mars Orbiter Mission (5 November 2013), AstroSat (28 September 2015), Aditya-L1 (2 September 2023), and XPoSat (1 January 2024).

Step-by-Step Solution

1
Identify the launch year of Chandrayaan-1
October 22, 2008 (Earliest mission in the list)
Chandrayaan-1 was ISRO's milestone first deep-space probe to the Moon.
2
Identify the launch year of Mars Orbiter Mission (Mangalyaan)
November 5, 2013
Mangalyaan was launched five years after Chandrayaan-1.
3
Identify the launch year of AstroSat
September 28, 2015
AstroSat was placed in Low Earth Orbit in late 2015.
4
Identify the launch year of Aditya-L1
September 2, 2023
Aditya-L1 was launched following Chandrayaan-3 in late 2023.
5
Identify the launch year of XPoSat
January 1, 2024
XPoSat was launched on New Year's Day 2024 aboard PSLV-C58.

Key Concept

Chronology of Indian Space Research Organisation (ISRO) flagship space science and astronomical missions.
Question 2352Question →

Match the cellular structures and molecular machinery listed in List-I with their corresponding specialized biological functions listed in List-II:

Click a left item, then click its matching right item

Items

Peroxisome
Nucleolus
Spliceosome
Centrosome

Matches

Show answer & explanation

Answer

Peroxisome matches with decomposition of hydrogen peroxide and oxidative β\beta-oxidation of fatty acids; Nucleolus matches with transcription and assembly of ribosomal RNA (rRNArRNA) subunits; Spliceosome matches with excising non-coding intron sequences from precursor mRNA (pre-mRNApre\text{-}mRNA); Centrosome matches with organization of microtubule arrays and regulation of mitotic spindle formation.
Each cellular component is accurately mapped to its primary physiological role: Peroxisomes carry out β\beta-oxidation and peroxide detoxification; the Nucleolus synthesizes ribosomal RNA subunits; Spliceosomes carry out RNA splicing by excising introns; and Centrosomes act as microtubule organizing centers for spindle formation.

Step-by-Step Solution

1
Identify the metabolic role of Peroxisomes
Peroxisomes house oxidative enzymes including catalase to metabolize toxic H2O2H_2O_2 and break down fatty acids through β\beta-oxidation.
This differentiates peroxisomes from lysosomes, which focus on hydrolytic digestion of macromolecules.
2
Identify the sub-nuclear region function of the Nucleolus
The nucleolus specifically transcribes rRNArRNA genes and initial subunit construction.
Protein translation itself occurs in the cytoplasm or rough endoplasmic reticulum, while ribosome building originates in the nucleolus.
3
Determine the nuclear ribonucleoprotein function of the Spliceosome
Spliceosomes catalyze post-transcriptional splicing, removing non-coding introns from eukaryotic pre-mRNA.
Prokaryotes lack spliceosomes due to co-transcriptional translation and lack of spliceosomal introns.
4
Establish the structural role of the Centrosome
Centrosomes contain centrioles (in animal cells) and organize the microtubule spindle during mitosis and meiosis.
Spindle fibers attach to kinetochores to segregate chromosomes during cell division.

Key Concept

Eukaryotic Cell Organelle and Molecular Machinery Specialization
Estimated Time:1m 30s
Question 2353Question →

Consider the following statements regarding the quantitative monetary policy instruments utilized by the Reserve Bank of India (RBI):

1. The Cash Reserve Ratio (CRR) is maintained by commercial banks under Section 42 of the Reserve Bank of India Act, 1934, as a specified percentage of their Net Demand and Time Liabilities (NDTL) held with the RBI, on which banks receive no interest earnings.
2. The Statutory Liquidity Ratio (SLR) is mandated under Section 24 of the Banking Regulation Act, 1949, and can be maintained in liquid assets such as cash, gold, and unencumbered approved government securities.
3. An upward revision in the Cash Reserve Ratio (CRR) by the RBI enhances the primary credit creation capacity of commercial banks by expanding their lendable reserve base.

Which of the statements given above is/are correct?

Show answer & explanation

Answer: 1 and 2 only

Answer

Statements 1 and 2 only are correct.
Statements 1 and 2 accurately state the legal statutory frameworks governing cash reserve and statutory liquidity requirements in India. Under Section 42 of the Reserve Bank of India Act, 1934, scheduled commercial banks maintain CRR with the RBI without receiving interest earnings. Under Section 24 of the Banking Regulation Act, 1949, banks maintain SLR in specified liquid forms including cash, gold, and unencumbered government bonds. Statement 3 is wrong because raising CRR locks up liquidity and reduces bank credit expansion capacity.

Step-by-Step Solution

1
Analyze Statement 1 regarding statutory provisions and interest on CRR.
Statement 1 is correct. Under Section 42(1) of the RBI Act, 1934, scheduled commercial banks must maintain CRR as a balance with the RBI. RBI does not pay interest on CRR balances.
Verify the legal basis and financial rules governing Cash Reserve Ratio balances.
2
Analyze Statement 2 regarding SLR mandate and permissible asset forms.
Statement 2 is correct. Section 24 of the Banking Regulation Act, 1949, empowers RBI to mandate SLR in liquid assets comprising cash, gold, and unencumbered G-Secs/Treasury Bills.
Verify the governing act and eligible asset classes for Statutory Liquidity Ratio compliance.
3
Analyze Statement 3 regarding the economic transmission mechanism of raising CRR.
Statement 3 is incorrect. Increasing CRR forces banks to transfer a larger portion of NDTL to the RBI, directly reducing their excess loanable reserves and money multiplier capacity.
Evaluate the quantitative monetary policy impact of CRR adjustments on market liquidity and bank lending.

Key Concept

Statutory Foundations and Liquidity Transmission of CRR and SLR
Estimated Time:1m 15s
Question 2354Question →

Match the Standing Parliamentary Committees listed under Column I with their corresponding structural compositions or primary legislative functions listed under Column II:

Click a left item, then click its matching right item

Items

Public Accounts Committee
Estimates Committee
Committee on Public Undertakings
Committee on Subordinate Legislation

Matches

Show answer & explanation

Answer

Public Accounts Committee matches with examining CAG audit reports; Estimates Committee matches with consisting exclusively of 30 Lok Sabha members; Committee on Public Undertakings matches with examining reports and accounts of public sector enterprises; Committee on Subordinate Legislation matches with scrutinizing executive delegated legislation.
The Public Accounts Committee directly examines the audit reports of the CAG. The Estimates Committee is unique in having 30 members drawn exclusively from the Lok Sabha. The Committee on Public Undertakings evaluates the accounts and reports of PSUs. The Committee on Subordinate Legislation monitors executive rulemaking under statutory delegation.

Step-by-Step Solution

1
Identify the mandate of the Public Accounts Committee (PAC).
PAC is responsible for examining the audit reports of the Comptroller and Auditor General (CAG) of India.
It acts as a parliamentary watchdog over government spending.
2
Identify the composition of the Estimates Committee.
The Estimates Committee has 30 members, all of whom are elected solely from the Lok Sabha.
Rajya Sabha has no representation on the Estimates Committee.
3
Identify the role of the Committee on Public Undertakings (COPU).
COPU examines reports, accounts, and autonomy of specified public sector undertakings (PSUs).
It handles financial and administrative oversight specifically for state enterprises.
4
Identify the function of the Committee on Subordinate Legislation.
This committee scrutinizes rules, regulations, and statutory instruments framed by the executive under delegated powers.
It ensures that the executive does not exceed the legislative mandate conferred by parent Acts of Parliament.

Key Concept

Structure, Composition, and Functions of Parliamentary Financial and Standing Committees
Question 2355Question →

According to the criteria established by Norman Myers for identifying global biodiversity hotspots, which of the following statements are correct?

Select all that apply

Show answer & explanation

Answer: The region must contain at least 1,500 species of vascular plants as endemics.; The region must have lost at least 70% of its original primary vegetation.

Answer

The correct statements are that a region must contain at least 1,500 species of vascular plants as endemics and must have lost at least 70% of its primary native vegetation.
To qualify as a global biodiversity hotspot under Norman Myers' criteria, a region must fulfill two key requirements: it must contain at least 1,500 species of endemic vascular plants (high endemism) and must have lost at least 70% of its original primary habitat (high degree of threat).

Step-by-Step Solution

1
Recall Norman Myers' core quantitative criteria for defining a biodiversity hotspot.
The two primary criteria are species endemism (minimum 1,500 endemic vascular plants) and degree of threat (loss of at least 70% of original primary habitat).
These metrics quantitatively measure high endemic species richness combined with extreme habitat destruction.
2
Compare each provided statement against these standard criteria.
The requirements of 1,500 endemic plant species and 70% habitat loss are accurate criteria, whereas national park designation and global mammal percentage requirements are incorrect.
Administrative protection status does not dictate scientific hotspot eligibility.

Key Concept

Norman Myers Biodiversity Hotspot Qualification Criteria
Question 2356Question →

Arrange the following seral stages of primary xerarch succession (lithosere) on a bare rock in the correct sequential order, from the initial pioneer stage to the final climax community:

Drag items to arrange them in the correct order

Show answer & explanation

Answer

The correct chronological sequence of seral stages in primary xerarch succession (lithosere) is: Crustose Lichen Stage → Foliose Lichen Stage → Moss Stage → Herbaceous Grass Stage → Climax Forest Stage.
Primary xerarch succession on bare rock starts with Crustose Lichens as pioneers. As organic matter accumulates, Foliose Lichens succeed them, followed by Mosses which deepen the soil layer. Herbaceous Grasses then colonize the enriched soil, ultimately yielding to a stable Climax Forest Stage under regional climatic control.

Step-by-Step Solution

1
Identify the pioneer community capable of colonizing bare rock without pre-existing soil.
Crustose lichens adhere directly to bare rock surfaces and secrete organic acids to weather the mineral substrate.
Crustose lichens are extreme xerophiles requiring minimal moisture and no true soil, making them the pioneer stage.
2
Determine the succeeding lichen form that replaces the crustose stage.
Foliose lichens with leaf-like thalli establish as fine dust and organic debris accumulate.
Foliose lichens grow over crustose lichens, shading them out while accelerating organic soil buildup.
3
Identify the bryophyte stage that colonizes the newly accumulated soil.
Mosses establish in crevices containing accumulated organic soil layer.
Mosses possess rhizoids that anchor into shallow soil and retain significant moisture, further developing soil structure.
4
Identify the herbaceous plant stage that succeeds mosses.
Herbaceous annual and perennial grasses germinate and displace mosses.
Grasses require deeper soil layers and higher nutrient availability created by the preceding moss stage.
5
Identify the final stable community.
Climax Forest Stage develops as tree species replace shrubs and grasses.
Deepened soil and microclimatic moisture support tall woody trees forming a permanent climax community.

Key Concept

Primary Xerarch Succession (Lithosere)
Question 2357Question →

In nanotechnology, Single-Walled Carbon Nanotubes (SWCNTs) exhibit uniform metallic conductivity across all structural configurations, irrespective of their chiral indices (n,m)(n, m), due to unconstrained π\pi-electron delocalization along their cylindrical lattice.

Show answer & explanation

Answer: False

Answer

The statement is False. The electrical conductivity of Single-Walled Carbon Nanotubes (SWCNTs) depends on their chiral indices (n,m)(n, m), making them either metallic or semiconducting.
The statement is false because the conductivity of SWCNTs is dictated by their chirality indices (n,m)(n, m). Only nanotubes satisfying the relation where (n−m)(n - m) is a multiple of 33 demonstrate metallic conductivity, whereas all other chiral arrangements produce semiconducting behavior.

Step-by-Step Solution

1
Analyze the structural synthesis of Single-Walled Carbon Nanotubes (SWCNTs).
SWCNTs can be conceptualized as a single-atom-thick graphene sheet rolled into a seamless cylinder along a specific chiral vector (n,m)(n, m).
The vector direction determines the circumferential alignment of carbon hexagons relative to the tube axis.
2
Evaluate the 1D quantum confinement effects on electronic band structures.
Rolling graphene imposes periodic boundary conditions along the circumference, quantizing wave vectors into 1D sub-bands.
Depending on whether these sub-bands pass through the Dirac points of graphene, the nanotube becomes metallic or semiconducting.
3
Apply the mathematical criterion for conductivity classification.
SWCNTs are metallic if (n−m)(n - m) is divisible by 33; otherwise, they exhibit a bandgap and function as semiconductors (comprising roughly two-thirds of all synthesized SWCNTs).
This structural dependence refutes the claim that all SWCNTs possess metallic conductivity regardless of chiral indices.

Key Concept

Chirality and Electronic Transport in Carbon Nanotubes
Question 2358Question →

Match each administrative dilemma scenario presented in List-I with the corresponding foundational principle of public administration ethics demonstrated in List-II:

Click a left item, then click its matching right item

Items

An administrator disbursing social pensions notices that several elderly beneficiaries lack biometric ID authentication due to worn fingerprints. Strictly following standard automated rules would deny their basic subsistence. The officer institutes an audited manual verification log backed by community witness attestation to disburse benefits immediately while filing for official system overrides.
A procurement officer discovers that a draft tender specification for medical diagnostic equipment contains proprietary clauses tailor-made for a single supplier without technical justification. The officer stays the tender issuance and convenes an independent expert committee to neutralize the specifications for fair competition.
A district sub-divisional magistrate is verbally instructed by an influential local politician to fast-track land clearing for an industrial project while ignoring mandatory environmental impact clearances. The magistrate formally insists on full statutory compliance and records all official communications transparently in the case file.
A senior officer discovers severe financial auditing irregularities in a infrastructure project supervised by their long-time administrative mentor who is near retirement. The officer refrains from informal cover-ups and initiates a formal institutional inquiry despite personal loyalties.

Matches

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Answer

The correct pairings are: Biometric authentication override matched with Substantive Justice and Human-Centric Administrative Discretion; Tender specification neutrality matched with Procedural Equity, Neutrality, and Non-Discriminatory Public Contracting; Insisting on environmental clearances despite political pressure matched with Statutory Rule of Law and Protection against Unlawful External Influence; Reporting mentor irregularities matched with Institutional Integrity and Supremacy of Public Duty over Personal Loyalty.
Each administrative action accurately maps to its core ethical foundation: flexibility for human welfare reflects substantive justice; fair procurement reflects non-discriminatory equity; resisting political interference reflects rule of law; and unbiased auditing reflects institutional integrity over personal loyalty.

Step-by-Step Solution

1
Analyze the biometric pension scenario
Identified that the administrator balanced rule-following with human survival needs using transparent safeguards.
This illustrates administrative discretion aimed at substantive justice and protecting vulnerable citizens from rigid rule-bound exclusion.
2
Analyze the tender specification scenario
Identified that biased procurement rules were corrected to allow open access.
Public procurement ethics require level playing fields, procedural fairness, and non-discrimination among vendors.
3
Analyze the environmental clearance scenario under political pressure
Identified strict adherence to statutory law and official record-keeping despite external influence.
Public servants are bound to execute the law impartially and resist unlawful extra-constitutional directions.
4
Analyze the audit irregularity scenario involving a personal mentor
Identified prioritization of official duty over personal obligation.
Administrative integrity demands that public accountability overrides private relationships or personal indebtedness.

Key Concept

Foundational Ethical Frameworks in Public Administration and Decision Making
Question 2359Question →

Somatic gene therapy targets non-reproductive cells of the body, and therefore any genetic modifications introduced during the treatment cannot be passed on to the patient's offspring.

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Answer: True

Answer

True
Somatic gene therapy targets non-germline body cells such as bone marrow, liver, or lung tissues. As a result, the therapeutic genetic edits remain confined to the patient and are not passed down to future generations. Inheritable genetic edits are exclusively achieved through germline gene editing.

Step-by-Step Solution

1
Identify the target cell type specified in somatic gene therapy.
Somatic gene therapy targets non-reproductive body cells (e.g., bone marrow, muscle, or respiratory cells).
Understanding cell type classification is essential to determine whether genetic changes can be inherited.
2
Evaluate the inheritability of genetic changes made to somatic cells.
Because germline cells (eggs and sperm) remain untouched, the genetic changes affect only the treated individual and cannot be inherited by offspring.
Only genetic alterations in reproductive (germline) cells are passed on to the next generation.

Key Concept

Distinction between somatic and germline gene therapy
Question 2360Question →

A coin placed at the bottom of a beaker filled with water appears to be raised above its actual position when viewed from the air directly above. Which of the following optical phenomena is primarily responsible for this observed shift in apparent position?

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Answer: Refraction of light as it travels from an optically denser medium (water) into an optically rarer medium (air)

Answer

The apparent elevation of a submerged object in water is caused by the refraction of light as it passes from water into air.
Light rays reflected from the submerged object bend away from the normal when exiting water into air. Because human visual perception assumes light travels in unbent straight lines, tracing these refracted rays backward projects a virtual image higher than the object's actual physical location.

Step-by-Step Solution

1
Trace light rays from the object inside the water toward the surface.
Light rays travel from water (optically denser medium, refractive index nwater≈1.33n_{\text{water}} \approx 1.33) toward air (optically rarer medium, nair≈1.00n_{\text{air}} \approx 1.00).
For an object submerged in water to be visible to an external observer, light must cross the interface between the two media.
2
Apply Snell's law of refraction at the boundary.
The light rays bend away from the normal upon entering the air.
When light passes from a medium of higher refractive index to one of lower refractive index, the angle of refraction is greater than the angle of incidence.
3
Determine the position of the virtual image formed by the refracted rays.
Extrapolating the refracted rays backward in a straight line locates a virtual image above the object's actual depth.
The relation for apparent depth is given by d′=dnwaterd' = \frac{d}{n_{\text{water}}}, where dd is the real depth and d′d' is the shallower apparent depth.

Key Concept

Apparent Depth and Refraction at Plane Interfaces
Estimated Time:1m 0s
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