Commerce MCQs
Topic Notes: Commerce
MCQs and preparation resources for competitive exams, covering important concepts, past papers, and detailed explanations.
Plato
- Biography: Ancient Greek philosopher (427–347 BCE), student of Socrates and teacher of Aristotle, founder of the Academy in Athens.
- Important Ideas:
- Theory of Forms
- Philosopher-King
- Ideal State
111
Which economist famously stated that 'Economics remains neutral to objectives'?
Answer:
Marshall
The statement that economics is neutral between ends is widely attributed to Lionel Robbins in his 'Essay on the Nature and Significance of Economic Science'. While the provided answer key cites Marshall, this is historically contested as Marshall focused on welfare economics, whereas Robbins emphasized the scarcity-based definition of economics as a neutral science.
112
What is the mathematical formula for the Marginal Rate of Substitution (MRS) between goods X and Y?
Answer:
$$MR{S_{xy}} = \frac{{ - \Delta y}}{{\Delta x}}$$
The Marginal Rate of Substitution (MRS) measures the amount of good Y that a consumer is willing to give up to obtain one additional unit of good X while maintaining the same level of utility. Since the indifference curve is downward sloping, the change in Y (Δy) is negative for an increase in X (Δx). The negative sign in the formula ensures that the MRS is expressed as a positive value.
113
When is a consumer considered to be in equilibrium, thereby maximizing total utility?
Answer:
the proportions of the marginal utilities and respective prices are equal
Consumer equilibrium occurs when the marginal utility per dollar spent is equal across all goods consumed (MUx/Px = MUy/Py). This condition ensures that the consumer is allocating their limited budget in the most efficient way to derive the highest possible total utility from their purchases.
114
In a two-good model (A and B), if the price of A falls and the consumer's income rises, yet the consumption of A decreases while B increases, what economic principle explains this behavior?
Answer:
The substitution effect has acquired the predominance of the income effect
When the price of a good falls, the substitution effect encourages buying more of it. However, if the income effect (which might be negative for an inferior good) outweighs the substitution effect, the total quantity demanded may decrease. In this scenario, the substitution effect dominates the income effect, leading to a shift in consumption patterns between the two goods.
115
What happens to Total Utility when Marginal Utility remains positive?
Answer:
Increases
Total Utility is the sum of all marginal utilities derived from consuming successive units of a good. As long as the Marginal Utility (the additional satisfaction from the next unit) is positive, each additional unit adds to the total, causing Total Utility to increase. It only stops increasing when Marginal Utility reaches zero, at which point Total Utility is at its maximum.
116
What is the relationship between total utility and marginal utility when total utility reaches its maximum point?
Answer:
When the total utility is maximum, marginal utility is zero
According to the law of diminishing marginal utility, total utility increases as long as marginal utility is positive. When total utility reaches its peak (maximum), the additional utility gained from the last unit consumed is zero. Therefore, marginal utility is zero at the point of maximum total utility.
117
Under what conditions does a consumer move to a higher indifference curve in an indifference curve/budget line model?
Answer:
The price of either good falls
A consumer reaches a higher indifference curve when their real purchasing power increases. If the price of either good falls while income remains constant, the budget line shifts outward, allowing the consumer to reach a higher indifference curve, representing a higher level of utility.
118
Which economic concept requires an ethical or value judgment to be derived?
Answer:
social welfare function
A social welfare function aggregates individual preferences into a collective measure of societal well-being. Because it involves weighing the utilities of different individuals against each other, it inherently requires ethical or value judgments regarding equity and fairness, which cannot be determined by positive economic analysis alone.
119
Under what condition is a consumer considered to be in equilibrium, thereby maximizing total utility?
Answer:
The proportion of the marginal utility and the respective price is equal
According to the law of equi-marginal utility, a consumer reaches equilibrium when the ratio of the marginal utility of each good to its respective price is equal across all goods consumed (MUx/Px = MUy/Py). This condition ensures that the consumer is getting the maximum possible satisfaction per unit of currency spent, as any reallocation would decrease total utility.
120
Under the theory of consumer equilibrium, at what point is a consumer consuming two goods considered to be in equilibrium?
Answer:
Equal
Consumer equilibrium for two goods is achieved when the ratio of marginal utility to price is equal for both goods (MUx/Px = MUy/Py). This ensures that the consumer is getting the same amount of satisfaction per dollar spent on each good, thereby maximizing total utility within their budget constraint.