Questions

Q:

___ is used to control the fission reaction rate in a nuclear reactor as it absorbs neutrons without itself getting into fissioning.

 

A) Heavy water B) Graphite
C) Water D) Calcium
 
Answer & Explanation Answer: D) Calcium

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Q:

For each perfectly competitive firm in the long run

A) price = marginal costs = average variable costs B) price = average profit
C) price = marginal costs = minimum average total costs D) price = minimum average variable costs
 
Answer & Explanation Answer: C) price = marginal costs = minimum average total costs

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Q:

The demand for a normal good decreases with ________ in the consumer's income.

A) increase B) decrease
C) constant D) double
 
Answer & Explanation Answer: B) decrease

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Q:

_________ says that the marginal product of a factor input initially rises with its employment level. But after reaching a certain level of employment, it starts falling.

A) Law of diminishing marginal product B) Law of variable proportions
C) The Short Run D) The Long Run
 
Answer & Explanation Answer: B) Law of variable proportions

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Q:

The study of individual markets of demand and supply in which the 'players', or the decision makers, were also individuals (buyers or sellers, even companies) who were seen as trying to maximize their profits (as producers or sellers) and their personal satisfaction or welfare levels (as consumers) is called?

A) Macroeconomics B) Econometrics
C) Microeconomics D) Heterodox Economics
 
Answer & Explanation Answer: C) Microeconomics

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Q:

A manufacturer faces price elasticity of demand of a ­1.25 for its product. If it lowers its price by 6.4%, the increase in quantity sold will be _____.

A) 5.15 percent B) 7.65 percent
C) 8 percent D) 5.12 percent
 
Answer & Explanation Answer: C) 8 percent

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Q:

Involuntary muscles are controlled by the

A) Central nervous system B) Autonomic nervous system
C) Peripheral nervous system D) All the above
 
Answer & Explanation Answer: B) Autonomic nervous system

Explanation:

Involuntary muscles are the muscles which contract without conscious control whereas Voluntary muscles are the muscles that help you walk, talk, pick up things, jump and do all the basic or complex movements you do everyday with your consciousness.

* The contraction in the involuntary muscles is controlled by the autonomic nervous system. These are present in the walls of the digestive system, blood vessels, bronchi, uterus and bladder.

* Voluntary muscles are mostly located in the arms ,legs ,hands, and feet.

 

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Q:

Which of the following plant tissues is capable of cell division?

A) Parenchyma B) Sclerenchyma
C) Meristem D) Xylem
 
Answer & Explanation Answer: C) Meristem

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