All practice questions

A container holds a layer of water of depth $16.0\text{ cm}$. An immiscible layer of oil of refractive index $1.20$ and thickness $6.0\text{ cm}$ floats on top of the water. If the refractive index of water is $1.33$ (or $\frac{4}{3}$), what is the total apparent depth, in centimeters, of a small object resting at the bottom of the container when viewed normally from directly above?

The accounting balances extracted from the books of Nkem Commercial Enterprises at the end of its financial year are as follows:

What is the net working capital of the enterprise?

An importing commercial enterprise in Nigeria receives a consignment of machinery but lacks the immediate liquidity to settle the assessed customs import duties in full. To enable the enterprise to pay duties in installments and release the machinery gradually as sales or funds become available, where should the goods be deposited?

A major setback encountered by developing economies that adopted early Import Substitution Industrialization (ISI) policies was that, rather than easing foreign exchange strain, the strategy often intensified dependency on foreign exchange. Which of the following factors primarily accounts for this unintended outcome?

An electronics manufacturing firm operates a web platform where registered wholesale distributors place bulk orders for microchips and industrial components directly from the factory. Which e-commerce business model is demonstrated by this transaction?

Match each physical scenario on the left with its corresponding primary mechanism of heat transfer on the right.

Read the prose extract below:

"Nnamdi was known throughout the town as a man of few words and unwavering routine. Every morning at precisely six o'clock, he opened his small bicycle repair shop, swept the front porch, and sat quietly on his wooden stool until dusk. Rain or shine, his expression remained unchanged, and he never engaged in local politics or personal gossip, maintaining the exact same simple demeanor for over forty years."

Based on his presentation in the passage, which literary classification best describes Nnamdi, and what technique is primarily used to reveal his character?

A consumer has a fixed budget of ₦20,000 and urgently requires both a modern economic textbook and a scientific calculator, each priced at ₦20,000. If the consumer decides to purchase the economic textbook, what is the real cost of this choice?

In theatrical production and dramatic analysis, specific technical terms describe stage layout, performance mechanics, and plot conventions. Match each theatrical term on the left with its correct function or definition on the right.

Profit earned by the entrepreneur is classified as a residual income rather than a contractual reward because its magnitude depends entirely on the financial outcome remaining after all explicit factor costs have been settled.

Under the Sale of Goods Act, an unpaid seller's exercise of the right of lien over goods in their possession automatically rescinds the contract of sale and revests property in the seller.

Following the reopening of English theatres in 1660, which historical period in drama was marked by the introduction of professional female actors on the English stage and the popularity of comedies of manners satirizing aristocratic wit and marriage?

Match each commercial product category or business scenario on the left with its most appropriate channel of distribution on the right.

A textbook publishing company in Kaduna produces thousands of books for secondary schools. To ensure these books reach students across different states, commercial intermediaries facilitate the buying and selling process, thereby transferring ownership from the producer to the final users. Which function of commerce is directly demonstrated by this process?

A commercial bakery in Kano operates an assembly line where workers are assigned exclusively to mixing, kneading, baking, or packaging. During a morning shift, a machine breakdown in the mixing department causes the entire factory to halt production because workers in the kneading and baking sections have no materials to work on. Which limitation of division of labor does this scenario illustrate?

When equal masses of two different substances absorb equal quantities of heat energy without undergoing a phase change, the substance with the lower specific heat capacity will experience a larger temperature rise.

A convex mirror used as a security mirror in a store has a radius of curvature of $20\text{ cm}$. If a shopper stands $30\text{ cm}$ in front of the mirror, at what distance from the mirror is the shopper's image formed?

A beverage manufacturing firm imports concentrated syrup subject to customs tariffs, intending to blend it under official oversight and re-export the finished product without selling it locally. A port official insists that import duty must be paid immediately upon offloading before any processing can occur. How can the firm legally refute this insistence using commercial warehousing rules?

Match each excerpt from the prescribed African poems in Column A with its corresponding central thematic focus in Column B.

Match each commercial banking regulatory tool or deposit mechanism on the left with its corresponding operational role in credit creation on the right.