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Question 2481Question →

Regarding India's naval nuclear propulsion and submarine-launched ballistic missile capabilities within its nuclear triad, analyze the following assertions:

Statement I: INS Arihant is powered by an indigenously developed pressurized light-water reactor using enriched uranium fuel.
Statement II: The K-15 (Sagarika) missile is an intercontinental ballistic missile with a operational strike range exceeding 5,000 km5,000\text{ km}.

Which of the statement(s) given above is/are correct?

Show answer & explanation

Answer: Only Statement I

Answer

Only Statement I is correct.
The statement asserting that INS Arihant uses a pressurized light-water reactor with enriched uranium is factually correct. The statement claiming K-15 Sagarika has a range over 5,000 km is incorrect, as its actual range is approximately 750 km.

Step-by-Step Solution

1
Examine the propulsion reactor specifications of INS Arihant.
INS Arihant is powered by a compact 83 MW83\text{ MW} Pressurized Light Water Reactor (PWR) developed by BARC, which uses enriched uranium fuel.
Light water reactors are standard for marine propulsion applications requiring compact reactors.
2
Evaluate the missile designation and operational range of K-15 (Sagarika).
The K-15 Sagarika is a submarine-launched ballistic missile (SLBM) with an effective strike range of around 750 km750\text{ km}, whereas long-range SLBM capabilities are provided by missiles like K-4 (3,500 km3,500\text{ km}).
Attributing an intercontinental range (>5,000 km>5,000\text{ km}) to K-15 is an error in missile range categorization.

Key Concept

Naval Nuclear Propulsion and Submarine Launched Ballistic Missiles (SLBM)
Question 2482Question →

Arrange the following Reserve Bank of India (RBI) money supply measures (monetary aggregates) in descending order of their operational liquidity, starting from the most liquid to the least liquid:

Drag items to arrange them in the correct order

Show answer & explanation

Answer

The correct descending order of liquidity among monetary aggregates is M1M_1, followed by M2M_2, then M3M_3, and finally M4M_4.
Liquidity measures how quickly an asset can be converted into a medium of exchange without loss of value. M1M_1 is the most liquid (cash and demand deposits). M2M_2 comes next as post office savings are liquid savings accounts. M3M_3 is third due to time deposits with fixed maturity. M4M_4 is the least liquid as it encompasses all broad money components and total post office deposits.

Step-by-Step Solution

1
Determine the liquidity level of M1M_1.
M1M_1 consists of physical currency in circulation and liquid demand deposits, representing 100% immediate transaction liquidity.
Demand deposits and cash can be spent directly without any conversion delay or financial penalty.
2
Compare the relative liquidity of M2M_2 and M3M_3.
M2M_2 adds post office savings deposits to M1M_1, whereas M3M_3 includes commercial bank time (fixed) deposits. Because fixed deposits carry lock-in tenures and early withdrawal penalties, M3M_3 is less liquid than M2M_2.
Time deposits cannot serve directly as a medium of exchange without liquidating the fixed deposit contract.
3
Evaluate the liquidity of M4M_4.
M4M_4 expands upon M3M_3 by adding long-term post office savings instruments, placing it at the bottom of the liquidity spectrum.
M4M_4 includes the largest volume of non-transactional savings deposits with longer lock-in periods.

Key Concept

Liquidity Hierarchy of Money Supply Aggregates (M1,M2,M3,M4M_1, M_2, M_3, M_4)
Question 2483Question →

Regarding the BrahMos missile system developed jointly by India and Russia, which of the following features are correct?

Select all that apply

Show answer & explanation

Answer: It operates on a 'fire-and-forget' principle requiring no guidance after launch; It can be launched from multi-domain platforms including land, ships, submarines, and aircraft

Answer

The correct statements are that the BrahMos missile operates on a 'fire-and-forget' principle and is capable of multi-platform launch from land, sea, sub-sea, and air.
The BrahMos missile is an indigenously integrated supersonic cruise missile developed by BrahMos Aerospace (a joint venture of DRDO and NPO Mashinostroyeniya). It features high precision with a 'fire-and-forget' navigation system and possesses multi-platform deployment capability across army, navy, and air force divisions.

Step-by-Step Solution

1
Analyze the operational classification and guidance mechanism of BrahMos
BrahMos is a supersonic cruise missile operating on a fire-and-forget principle with high terminal accuracy.
It employs self-contained guidance systems allowing high target hit accuracy.
2
Verify platform deployment versatility
The system has land-based, naval surface, underwater submarine, and air-launched variants.
Joint DRDO and NPO Mashinostroyeniya design specifications engineered multi-platform capability.
3
Evaluate propulsion and missile trajectory classification
It is a tactical supersonic cruise missile powered by a solid booster and liquid ramjet engine, rejecting long-range ballistic missile and nuclear propulsion assertions.
Cruise missiles maintain atmosphere-bound flight powered by air-breathing jet engines.

Key Concept

BrahMos Supersonic Cruise Missile System
Question 2484Question →

With reference to chemicals widely used in daily life and food processing, consider the following statements:

1. Sodium benzoate functions as an effective food preservative primarily in acidic conditions by inhibiting microbial growth.
2. Calcium carbide (CaC2CaC_2) releases ethylene gas (C2H4C_2H_4) upon reaction with moisture to artificially ripen fruits.
3. Aspartame decomposes at elevated cooking temperatures, making its use restricted to cold foods and soft drinks.

Which of the statements given above is/are correct?

Show answer & explanation

Answer: 1 and 3 only

Answer

Statements 1 and 3 only are correct.
The correct response identifies that statements 1 and 3 are factually accurate. Sodium benzoate operates effectively as a antimicrobial preservative in acidic mediums (pH < 4.5) like soft drinks and pickles. Aspartame decomposes under heat and is strictly used in cold food items. Statement 2 is false because calcium carbide reacts with water to yield acetylene gas (C2H2C_2H_2), not ethylene gas (C2H4C_2H_4).

Step-by-Step Solution

1
Analyze statement 1 regarding Sodium benzoate
Sodium benzoate (C6H5COONaC_6H_5COONa) is converted to benzoic acid in low pH (acidic) environments, which penetrates microbial cells and inhibits cellular enzymes. Statement 1 is correct.
Verify the mechanism and optimal pH conditions for sodium benzoate as a food preservative.
2
Analyze statement 2 regarding Calcium carbide
Calcium carbide (CaC2CaC_2) reacts with atmospheric moisture to produce acetylene gas (C2H2C_2H_2), according to the reaction CaC2+2H2O→Ca(OH)2+C2H2CaC_2 + 2H_2O \rightarrow Ca(OH)_2 + C_2H_2. Acetylene mimics ethylene in ripening, but the gas produced directly is acetylene, not ethylene. Statement 2 is incorrect.
Identify the precise chemical gas liberated by calcium carbide during fruit ripening.
3
Analyze statement 3 regarding Aspartame
Aspartame is a methyl ester of a dipeptide (aspartic acid/phenylalanine). It breaks down at high temperatures, losing its sweet flavor. Thus, it is unsuitable for baking or hot cooking. Statement 3 is correct.
Check thermal stability and culinary applications of artificial sweeteners.

Key Concept

Chemical compounds in food preservation, artificial ripening, and non-nutritive sweeteners
Estimated Time:1m 30s
Question 2485Question →

Match the Articles of the Constitution of India related to Centre-State Administrative Relations in List-I with their corresponding subject provisions in List-II:

Click a left item, then click its matching right item

Items

Article 256
Article 257
Article 258
Article 262

Matches

Show answer & explanation

Answer

Article 256 matches with the obligation of States to ensure compliance with parliamentary laws; Article 257 matches with Union control over States regarding maintenance of communications of national importance; Article 258 matches with the power of the Union to entrust executive functions to States with consent; and Article 262 matches with adjudication of inter-State water disputes.
The matching correctly pairs each constitutional provision in Part XI with its exact scope: Article 256 relates to general compliance obligations of State executive power; Article 257 deals with Union directions on national communication infrastructure; Article 258 allows the President to entrust Union executive tasks to a State with its consent; and Article 262 deals with inter-State river water dispute adjudication.

Step-by-Step Solution

1
Analyze administrative directives under Article 256 and Article 257
Identify that Article 256 governs general compliance obligations of States to Central laws, whereas Article 257 relates to specific Union directions such as military communication routes and protection of railways.
Administrative relations specify how Union executive authority coordinates with and directs State administrative machinery.
2
Examine delegation of executive functions under Article 258
Determine that Article 258 provides a mechanism for mutual intergovernmental delegation where the Centre entrusts administrative duties to States with consent.
This avoids administrative rigidity in a federal framework.
3
Verify inter-State dispute resolution mechanism under Article 262
Confirm that Article 262 deals specifically with inter-State river water adjudication.
Article 262 empowers Parliament to exclude jurisdiction of the Supreme Court or other courts over inter-State river water disputes.

Key Concept

Centre-State Administrative Relations and Inter-State Water Dispute Adjudication under Part XI of the Constitution of India
Question 2486Question →

Match List-I (Infectious Human Disease) with List-II (Primary Type of Causative Pathogen) and select the correct answer using the code given below:

List-I
A. Chikungunya
B. Syphilis
C. Leishmaniasis
D. Athlete's Foot

List-II
1. Protozoan parasite
2. Fungal organism
3. Virus
4. Bacterium

Which of the following represents the correct matching code?

Show answer & explanation

Answer: A-3, B-4, C-1, D-2

Answer

The correct matching code is A-3, B-4, C-1, D-2.
The combination assigning Chikungunya to a Virus (3), Syphilis to a Bacterium (4), Leishmaniasis to a Protozoan parasite (1), and Athlete's foot to a Fungal organism (2) accurately reflects the etiology of each disease.

Step-by-Step Solution

1
Identify the pathogen responsible for Chikungunya
Chikungunya is an RNA viral infection transmitted by Aedes mosquitoes (Matches A with 3).
Chikungunya virus belongs to the genus Alphavirus.
2
Identify the pathogen responsible for Syphilis
Syphilis is a sexually transmitted disease caused by the spirochete bacterium Treponema pallidum (Matches B with 4).
Treponema pallidum is a obligate internal bacterial parasite.
3
Identify the pathogen responsible for Leishmaniasis (Kala-azar)
Leishmaniasis is caused by intracellular protozoan parasites of the genus Leishmania transmitted by phlebotomine sandflies (Matches C with 1).
Leishmania species are unicellular eukaryotic protozoans.
4
Identify the pathogen responsible for Athlete's Foot
Athlete's foot (tinea pedis) is a superficial fungal infection affecting the skin of the feet (Matches D with 2).
Dermatophyte fungi such as Trichophyton rubrum break down keratin in outer skin layers.

Key Concept

Classification of Human Pathogens (Viral, Bacterial, Protozoan, Fungal)
Question 2487Question →

Arrange the following major committees and institutional milestones related to Indian agricultural policy, price determination, and food grain management in chronological order of their establishment or report submission, from the earliest to the latest:

Drag items to arrange them in the correct order

Show answer & explanation

Answer

The correct chronological order from earliest to latest is: Foodgrains Enquiry Committee (Asoka Mehta, 1957) -> Agricultural Prices Commission (1965) -> High-Level Committee on Long-Term Grain Policy (Abhijit Sen, 2002) -> High-Level Committee on Restructuring of FCI (Shanta Kumar, 2015).
The correct chronological arrangement starts with the Asoka Mehta Foodgrains Enquiry Committee set up in 1957, followed by the setting up of the Agricultural Prices Commission in 1965. Next is the submission of the Abhijit Sen High-Level Committee report on Long-Term Grain Policy in 2002, and the timeline concludes with the submission of the Shanta Kumar High-Level Committee report on FCI restructuring in 2015.

Step-by-Step Solution

1
Determine the historic year of constitution or report submission for each agricultural policy milestone.
Asoka Mehta Foodgrains Enquiry Committee: 1957; Agricultural Prices Commission: 1965; Abhijit Sen Committee on Long-Term Grain Policy: 2002; Shanta Kumar Committee on FCI Restructuring: 2015.
Identifying exact historic dates is required to form a chronological timeline of post-Independence agricultural management policies.
2
Sequence the events from the earliest year to the most recent year.
1957 (Asoka Mehta Committee) -> 1965 (APC setup) -> 2002 (Abhijit Sen Report) -> 2015 (Shanta Kumar Report).
Ordering the chronological timeline sequentially satisfies the prompt criteria.

Key Concept

Chronological evolution of food security policies, price advisory bodies, and public distribution system committees in India.
Question 2488Question →

Which of the following statements regarding human blood components and their functions are correct?

Select all that apply

Show answer & explanation

Answer: Red blood cells (erythrocytes) contain hemoglobin, which is responsible for transporting oxygen to body tissues.; White blood cells (leukocytes) serve as a crucial component of the human immune system to combat infections.

Answer

The correct statements are those identifying red blood cells as oxygen carriers via hemoglobin and white blood cells as key defensive components of the immune system.
Red blood cells carry oxygen using hemoglobin throughout the circulatory system, and white blood cells provide cellular and humoral defense mechanisms against disease. Both of these statements correctly describe human blood physiology.

Step-by-Step Solution

1
Evaluate the statement concerning red blood cells (erythrocytes).
Erythrocytes are rich in hemoglobin and their principal function is oxygen transport from respiratory organs to tissues.
This statement accurately describes erythrocyte physiology.
2
Evaluate the statement concerning blood platelets (thrombocytes).
Platelets function in blood coagulation, while lymphocyte white blood cells secrete antibodies.
Confusing platelet function with lymphocyte immune defense is incorrect.
3
Evaluate the statement concerning white blood cells (leukocytes).
Leukocytes constitute the core cellular defenses of the immune system.
This statement correctly defines leukocyte physiological role.
4
Evaluate the statement concerning blood plasma composition.
Plasma is about 90–92% water with dissolved proteins, whereas cellular components form the rest of whole blood.
Describing plasma as mostly cellular elements misrepresents blood fluid composition.

Key Concept

Composition of Human Blood and Physiological Roles of Formed Elements
Question 2489Question →

Consider the following statements regarding the architectural terminology and features of the Kalinga style (Odisha sub-school) of Nagara temple architecture:

1. The main sanctum tower built in a curvilinear shape is locally referred to as 'Rekha Deula'.
2. The assembly hall or porch preceding the sanctum sanctorum features a stepped pyramidal roof and is known as 'Pida Deula' or 'Jagamohana'.
3. 'Khakhara Deula' represents a distinct temple type built on a rectangular plan with a barrel-vaulted roof, typically dedicated to Sakti/female deities.

Which of the statements given above are correct?

Show answer & explanation

Answer: 1, 2 and 3

Answer

All three statements are correct regarding the classification of Kalinga temple architecture.
The Kalinga school of architecture categorizes temples into three main architectural types: Rekha Deula (tall curvilinear sanctum tower), Pida Deula (pyramidal assembly hall/Jagamohana), and Khakhara Deula (barrel-vaulted roofed rectangular shrine dedicated to goddess worship, such as Vaital Deula). Therefore, statements 1, 2, and 3 are all correct.

Step-by-Step Solution

1
Analyze Statement 1
Rekha Deula refers to the tall, straight-standing building with a curvilinear shikhara (tower) housing the main deity (garbhagriha). Statement 1 is correct.
It defines the primary sanctum tower of Odishan Nagara temples.
2
Analyze Statement 2
Pida Deula (or Jagamohana) is the audience or assembly hall placed directly in front of the Rekha Deula. Its roof consists of horizontal tiers (pidas) arranged in a pyramid shape. Statement 2 is correct.
It identifies the architectural structure of the mandapa/assembly hall.
3
Analyze Statement 3
Khakhara Deula is a truncated rectangular shrine with a barrel-vaulted roof (resembling a gourd or basket), almost exclusively used for Tantric/Sakti cults (e.g., Vaital Deula in Bhubaneswar). Statement 3 is correct.
It accurately characterizes the third specific sub-order of Odishan architecture.

Key Concept

Classification of Kalinga (Odisha) Temple Architecture
Question 2490Question →

Match the human digestive enzymes listed in List-I with their primary physiological functions and sites of action listed in List-II:

Click a left item, then click its matching right item

Items

Pepsin
Trypsin
Amylase
Lipase

Matches

Show answer & explanation

Answer

Pepsin matches with initiating protein digestion in the acidic stomach environment; Trypsin matches with cleaving proteins into peptides in the alkaline intestinal environment; Amylase matches with hydrolyzing starch into simple sugars; and Lipase matches with breaking down lipids into fatty acids and glycerol.
Each enzyme is paired correctly based on its substrate and site of physiological action: Pepsin initiates protein digestion in the stomach under acidic conditions; Trypsin continues protein digestion in the small intestine under alkaline conditions; Amylase breaks down complex starches into sugars; and Lipase hydrolyzes fats into fatty acids and glycerol.

Step-by-Step Solution

1
Identify gastric protein-digesting enzymes and their optimal environment.
Pepsin operates in the acidic gastric juice (pH ~1.5–2.0) of the stomach to digest proteins into peptones.
Hydrochloric acid secreted by parietal cells activates pepsinogen into pepsin.
2
Identify intestinal protein-digesting enzymes and their optimal environment.
Trypsin acts in the duodenum/small intestine where pancreatic bicarbonate creates an alkaline pH (~7.5–8.0).
Pancreatic proteases require neutral to slightly alkaline conditions for optimal enzymatic activity.
3
Map carbohydrate and lipid degrading enzymes to their specific substrate reactions.
Amylase acts on carbohydrates (starches), while Lipase acts on lipids (fats).
Enzyme specificity dictates that amylase breaks down α-1,4-glycosidic bonds, whereas lipase hydrolyzes lipid ester bonds.

Key Concept

Human Digestive Enzymes, Substrate Specificity, and pH Requirements
Question 2491Question →

Match the cell organelles listed in List-I with their corresponding physiological functions listed in List-II:

Click a left item, then click its matching right item

Items

Mitochondria
Ribosomes
Lysosomes
Golgi Apparatus

Matches

Show answer & explanation

Answer

Mitochondria matches with Cellular respiration and ATP production; Ribosomes matches with Protein synthesis; Lysosomes matches with Intracellular digestion and waste breakdown; Golgi Apparatus matches with Modification, packaging, and sorting of proteins.
Each cell organelle is accurately matched with its essential function: Mitochondria generate cellular energy (ATP), Ribosomes are the sites of protein assembly, Lysosomes digest cellular waste materials, and the Golgi apparatus packages and routes proteins.

Step-by-Step Solution

1
Identify the primary function of Mitochondria.
Mitochondria host cellular respiration to generate ATP, making them the powerhouses of the cell.
This establishes the correct pairing between Mitochondria and Cellular respiration and ATP production.
2
Identify the primary function of Ribosomes.
Ribosomes assemble amino acids into proteins during translation.
This establishes the match between Ribosomes and Protein synthesis.
3
Identify the primary function of Lysosomes.
Lysosomes store digestive enzymes responsible for degrading cellular waste.
This establishes the match between Lysosomes and Intracellular digestion and waste breakdown.
4
Identify the primary function of the Golgi Apparatus.
The Golgi apparatus modifies and packages proteins for transport within or outside the cell.
This establishes the match between Golgi Apparatus and Modification, packaging, and sorting of proteins.

Key Concept

Primary structures and physiological functions of eukaryotic cell organelles
Question 2492Question →

With reference to the Wavell Plan announced in June 1945 to resolve the political deadlock in India, which of the following was a key proposal included in the plan?

Show answer & explanation

Answer: Restructuring of the Viceroy's Executive Council to give equal representation to Caste Hindus and Muslims, with all members except the Viceroy and the Commander-in-Chief being Indians.

Answer

The restructuring of the Viceroy's Executive Council with equal representation for Caste Hindus and Muslims, excluding the Viceroy and Commander-in-Chief.
The Wavell Plan of June 1945 proposed that the Viceroy's Executive Council would be reconstituted such that all its portfolio heads, except the Viceroy and the Commander-in-Chief, would be Indians. It specifically stipulated equal representation (parity) between Caste Hindus and Muslims within the council.

Step-by-Step Solution

1
Identify the primary objective and scope of the Wavell Plan (1945).
The Wavell Plan aimed to break the political deadlock in India by creating an interim arrangement for executive administration.
Lord Wavell proposed reconstituting the Viceroy's Executive Council under the framework of the Government of India Act 1935 until a new constitution could be framed.
2
Examine the specific provisions regarding the Executive Council composition.
All executive portfolio holders except the Viceroy and the Commander-in-Chief were to be Indian leaders, with equal parity between Caste Hindus and Muslims.
This parity proposal led to intense debates at the Simla Conference (June–July 1945) over who had the right to nominate Muslim members.
3
Differentiate Wavell Plan proposals from other constitutional proposals.
Confirm that provincial grouping belongs to the Cabinet Mission (1946) and Dominion status/secession provisions belong to the Cripps Mission (1942).
Prevent misattribution of provisions across different colonial constitutional offers.

Key Concept

Wavell Plan and Simla Conference (1945) executive council proposals
Question 2493Question →

Match the Constitutional Articles of the Union Executive in List-I with their respective constitutional provisions in List-II:

Click a left item, then click its matching right item

Items

Article 63
Article 75(3)
Article 77
Article 78

Matches

Show answer & explanation

Answer

Article 63 matches with the provision establishing the office of the Vice-President of India; Article 75(3) matches with collective responsibility of the Council of Ministers to the Lok Sabha; Article 77 matches with conduct of business of the Government of India in the name of the President; and Article 78 matches with duties of the Prime Minister regarding furnishing of information to the President.
The matching correctly identifies the precise constitutional mandate of each article under Chapter I of Part V of the Constitution of India: Article 63 creates the post of Vice-President, Article 75(3) defines cabinet accountability to the Lok Sabha, Article 77 regulates official executive orders under the President's name, and Article 78 outlines the Prime Minister's duty to report to the President.

Step-by-Step Solution

1
Identify the core subject matter of Article 63 and Article 75(3)
Article 63 mandates the office of the Vice-President of India, while Article 75(3) establishes the principle of collective responsibility of the Council of Ministers to the Lok Sabha.
These are direct provisions governing executive offices and cabinet accountability.
2
Identify the procedural mandates of Article 77 and Article 78
Article 77 requires all executive notifications and actions to be formally taken in the President's name, while Article 78 defines the Prime Minister as the chief channel of communication between the Cabinet and the President.
These articles regulate administrative workflow and the constitutional dialogue between the Prime Minister and the Head of State.
3
Match each article code with its correct corresponding provision
Article 63 pairs with office of Vice-President; Article 75(3) pairs with collective responsibility; Article 77 pairs with conduct of business in President's name; Article 78 pairs with Prime Minister's duties to inform the President.
Establishes standard constitutional accuracy.

Key Concept

Constitutional Articles governing the Union Executive
Question 2494Question →

Situation: A recent internal government audit highlighted that a substantial portion of the budget allocated for a critical rural drinking water initiative remains unutilized. The audit noted that the primary cause is the inability of assigned local contractors to operate the newly procured, advanced purification machinery due to a lack of technical training.

Statement: A logically sound and administratively appropriate course of action in response to this audit would be to immediately cancel the rural drinking water initiative and reallocate all the remaining funds to urban infrastructure projects.

Show answer & explanation

Answer: False

Answer

The statement is false. An appropriate administrative course of action must target the specific root cause (lack of training) rather than abandoning an essential public welfare project in response to a correctable operational bottleneck.
The statement evaluates to false because the proposed action violates the core principle of administrative proportionality. When confronted with an operational bottleneck—in this case, a correctable lack of technical training—a logically sound course of action must involve implementing targeted remedies, such as capacity-building workshops or hiring specialized personnel. Completely abandoning an essential rural utility project is an extreme, defeatist measure that punishes the intended beneficiaries while failing entirely to address the actual competency issue.

Step-by-Step Solution

1
Identify the core problem and its root cause as presented in the situation.
The core problem is unutilized project funds, and the root cause is that local contractors lack the technical training needed to operate new purification machinery.
Understanding the exact origin of a problem is essential to evaluating whether a proposed solution effectively addresses it.
2
Analyze the scope and impact of the proposed course of action.
The proposal suggests terminating the entire rural drinking water project and shifting the budget to an unrelated urban sector.
To determine if the action is proportionate, practical, and aligned with administrative priorities.
3
Evaluate the administrative soundness of the action against the identified problem.
The proposed action fails to resolve the training deficit and instead deprives rural citizens of a critical necessity. Therefore, it is an extreme and invalid administrative response.
A valid course of action must actively solve the presented issue without generating severe, disproportionate negative consequences.

Key Concept

Evaluating Administrative Proportionality and Root Cause Resolution
Question 2495Question →

Which of the following statements concerning demographic trends and types of unemployment in economic development are correct?

Select all that apply

Show answer & explanation

Answer: Disguised unemployment is characterized by a situation where more workers are engaged in an activity than necessary, resulting in near-zero marginal productivity of labor.; Demographic dividend represents the potential economic growth resulting from a shift in a population's age structure, specifically when the proportion of the working-age population is higher than the non-working dependent population.

Answer

The correct statements are the one defining disguised unemployment as having near-zero marginal productivity of labor and the one describing demographic dividend as economic growth potential driven by a larger working-age ratio.
Disguised unemployment accurately reflects surplus labor with zero marginal productivity, typical in crowded agricultural fields. Demographic dividend accurately describes the growth window created when the working-age population outnumbers dependents.

Step-by-Step Solution

1
Analyze the concept of disguised unemployment
Disguised unemployment occurs when excess labor yields zero marginal output.
It is a structural feature of agriculture and informal sectors in developing economies.
2
Differentiate between frictional and structural unemployment
Mismatch between available skills and industry demands defines structural unemployment, not frictional.
Frictional unemployment involves temporary transition periods between jobs.
3
Evaluate the definition and metrics of demographic dividend
Demographic dividend requires an expanding working-age population (15–64 years) relative to dependents, which lowers the dependency ratio.
A lower dependency ratio frees up resources for savings, capital formation, and productivity growth.

Key Concept

Demographic Dividend and Unemployment Types
Estimated Time:1m 30s
Question 2496Question →

In the study of human health and infectious disease epidemiology, precise identification of causative organisms and their biological vectors is critical for effective disease management. Which of the following options correctly matches the infectious disease with its causative microorganism and its primary transmission vector?

Show answer & explanation

Answer: Scrub Typhus �� Orientia tsutsugamushi (Bacterium) — Trombiculid mite

Answer

Scrub Typhus is correctly matched with its causative bacterium Orientia tsutsugamushi and its primary vector, the larval trombiculid mite.
Scrub typhus is an acute infectious zoonotic disease caused by Orientia tsutsugamushi, an obligate intracellular bacterium (formerly classified under Rickettsia). It is transmitted to humans through the bites of infected larval stage trombiculid mites (chiggers), making the disease, pathogen type, and vector combination completely accurate.

Step-by-Step Solution

1
Analyze the pathogen classification for each disease option.
Identify that Orientia tsutsugamushi is a bacterium, Leishmania donovani is a protozoan parasite, Trypanosoma brucei is a protozoan parasite, and Kyasanur Forest Disease agent is a Flavivirus.
Accurate pathogen etiology (bacterial vs viral vs protozoan) is required to eliminate misclassified options.
2
Analyze the transmission vector associated with each disease.
Scrub typhus is transmitted by trombiculid mites, Kala-azar by sandflies, Sleeping sickness by tsetse flies, and KFD by hard ticks (Haemaphysalis spinigera).
Verifying both vector and pathogen components ensures comprehensive matching accuracy.
3
Cross-reference pathogen type and vector for all choices.
Only the pairing of Scrub Typhus with Orientia tsutsugamushi (Bacterium) and Trombiculid mite is entirely correct in both pathogen nature and vector type.
The other options misidentify the biological kingdom/nature of the causative pathogen.

Key Concept

Classification of infectious human diseases by pathogen etiology (bacterial, viral, protozoan) and biological vectors
Estimated Time:1m 30s
Question 2497Question →

India's nuclear technology program relies heavily on indigenous research reactors for fissile material production, isotope generation, and technological validation. Arrange the following historical Indian nuclear research reactors in chronological order based on the year of their initial criticality, starting from the earliest to the most recent.

Drag items to arrange them in the correct order

Show answer & explanation

Answer

The correct chronological sequence from earliest to most recent is: Apsara (1956) → CIRUS (1960) → Dhruva (1985) → KAMINI (1996).
The sequence follows the exact historical timeline of initial criticality dates: Apsara was commissioned first in August 1956, followed by CIRUS in July 1960, Dhruva in August 1985, and KAMINI in October 1996.

Step-by-Step Solution

1
Identify the criticality date of Apsara
Apsara achieved criticality on August 4, 1956, making it the earliest research reactor in Asia.
Establishes the starting point of the sequence.
2
Identify the criticality date of CIRUS
CIRUS achieved criticality on July 10, 1960, built with Canadian assistance.
Places CIRUS second in the timeline.
3
Identify the criticality date of Dhruva
Dhruva achieved criticality on August 8, 1985, at the Bhabha Atomic Research Centre (BARC).
Places Dhruva third in the sequence.
4
Identify the criticality date of KAMINI
KAMINI achieved criticality on October 29, 1996, at the Indira Gandhi Centre for Atomic Research (IGCAR), Kalpakkam.
Establishes KAMINI as the most recent reactor among the choices.

Key Concept

Chronology of Indian Nuclear Research Reactors
Question 2498Question →

Consider the following statements regarding the distinction between Article 358 and Article 359 of the Indian Constitution during a Proclamation of National Emergency:

1. Article 358 automatically suspends the Fundamental Rights guaranteed under Article 19 only when the National Emergency is declared on grounds of war or external aggression, and not on the ground of armed rebellion.
2. Article 359 automatically suspends the right to move any court for the enforcement of all Fundamental Rights immediately upon the proclamation of emergency.
3. An order issued by the President under Article 359 may specify a enforcement suspension period that is shorter than the entire duration of the National Emergency.

Which of the statements given above are correct?

Show answer & explanation

Answer: Statement 1 and Statement 3

Answer

Statements 1 and 3 are correct.
Statements 1 and 3 are correct. Following the 44th Constitutional Amendment Act of 1978, Article 358 operates automatically to suspend rights under Article 19 only in cases of External Emergency (war or external aggression), excluding internal emergency on grounds of armed rebellion. Under Article 359, the President has the discretion to specify an enforcement suspension period that is shorter than the entire duration of the emergency. Statement 2 is incorrect because Article 359 requires an explicit Presidential Order (it does not work automatically) and cannot touch Articles 20 and 21.

Step-by-Step Solution

1
Analyze Statement 1 regarding Article 358 and the 44th Constitutional Amendment Act, 1978.
The 44th Amendment restricted the scope of Article 358 such that Fundamental Rights under Article 19 are suspended automatically only when an emergency is declared on the grounds of war or external aggression (External Emergency), and NOT on the ground of armed rebellion (Internal Emergency). Therefore, Statement 1 is correct.
To verify the constitutional limitation placed on Article 358.
2
Analyze Statement 2 regarding the operational nature of Article 359.
Article 359 does not operate automatically upon the proclamation of emergency. Instead, it empowers the President to issue a separate order suspending the right to move any court for the enforcement of specified Fundamental Rights. Furthermore, Articles 20 and 21 can never be suspended even by Presidential order. Therefore, Statement 2 is incorrect.
To distinguish between automatic suspension under Article 358 and non-automatic Presidential orders under Article 359.
3
Analyze Statement 3 regarding the duration of a Presidential Order under Article 359.
Under Article 359(2), an order issued by the President may extend to the whole or any part of the territory of India and may specify a period shorter than the total duration of the Proclamation of Emergency. Therefore, Statement 3 is correct.
To verify the temporal and territorial flexibility granted to Presidential orders under Article 359.

Key Concept

Constitutional provisions under Articles 358 and 359 governing the suspension of Fundamental Rights during National Emergency
Question 2499Question →

You are the Zonal Director for the State Civil Supplies Corporation. A recently promoted Junior Depot Manager is facing coordinated resistance from a group of veteran logistics staff who were formerly the manager's peers. The veteran staff are intentionally delaying the use of a newly mandated digital inventory system, vaguely citing 'software glitches' to undermine the new manager's authority. Frustrated, the Junior Depot Manager submits a formal grievance to you, requesting the immediate punitive transfer of the three most vocal veteran staff members to a remote facility. Which of the following is the most appropriate administrative action for you to take in this scenario?

Show answer & explanation

Answer: Schedule a formal mediation session to firmly establish compliance timelines for the digital mandate, while instructing the manager to document any future non-compliance for standard progressive disciplinary action.

Answer

Schedule a formal mediation session to firmly establish compliance timelines for the digital mandate, while instructing the manager to document any future non-compliance for standard progressive disciplinary action.
The correct action addresses the grievance through procedural fairness and assertive boundary-setting. It supports the new manager's authority by enforcing the digital mandate but relies on documented, step-by-step disciplinary escalation (progressive discipline) rather than granting an immediate, extreme punitive transfer.

Step-by-Step Solution

1
Analyze the core conflict and the manager's request.
Identified that the veteran staff are resisting authority and a state mandate, but the manager's request for immediate punitive transfer is an extreme overreaction.
Administrative decisions must balance supporting subordinate managers with adhering to due process and proportionate disciplinary measures.
2
Evaluate the proposed solutions against administrative ethics and standard protocols.
Rejected immediate transfers (too extreme), public confrontation (unprofessional aggression), and ignoring the mandate (policy violation). Selected formal mediation with progressive discipline.
Progressive discipline ensures fairness, establishes a documented paper trail, and firmly enforces the organizational mandate without resorting to disproportionate punitive actions.

Key Concept

Workplace Grievance and Subordinate Management Scenarios
Question 2500Question →

Match the bio-fertilizers and beneficial microorganisms listed in List-I with their primary agricultural roles or host associations listed in List-II.

Click a left item, then click its matching right item

Items

Azotobacter
Rhizobium
Anabaena azollae
Mycorrhiza

Matches

Show answer & explanation

Answer

Azotobacter matches with free-living nitrogen-fixing bacterium for non-leguminous crops; Rhizobium matches with symbiotic nitrogen fixer in legume root nodules; Anabaena azollae matches with cyanobacterial symbiont used in rice paddies; and Mycorrhiza matches with fungal association enhancing phosphorus absorption.
Each microorganism corresponds to its primary function in plant nutrition and crop management: Azotobacter fixes nitrogen freely in non-legume soils, Rhizobium forms symbiotic nodules in legumes, Anabaena azollae enriches nitrogen in paddy fields via water fern symbiosis, and Mycorrhiza boosts plant phosphorus absorption.

Step-by-Step Solution

1
Identify the nitrogen-fixing bacteria based on host specificity and habitat.
Rhizobium specifically infects leguminous roots forming nodules, while Azotobacter lives freely in soil around non-legume crops.
Differentiating symbiotic legume fixers from free-living non-legumes is key to matching nitrogen-fixing bacteria.
2
Identify the aquatic bio-fertilizer agent.
Anabaena azollae works symbiotically with Azolla fern in flooded paddy fields to supply bio-available nitrogen.
Azolla-Anabaena system is a classic bio-fertilizer combination for wetland rice agriculture.
3
Identify nutrient absorption fungi.
Mycorrhiza expands root surface area primarily for phosphorus transport.
Mycorrhizae specialize in solubilization and mobilization of immobile soil phosphorus.

Key Concept

Bio-fertilizers and Microorganisms in Sustainable Agriculture
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