Previous year MCQs

General science UPPSC 1997 GS-I
Question

Which is a celestial phenomenon occurring due to stars:

Answer & Solution

Answer: (Detailed Solution Below)

Option B: Black hole

Detailed Solution:

The correct answer is “Black hole”.
Black hole is the celestial phenomenon occurring due to stars. A black hole is formed when a massive star collapses at the end of its life cycle.1

Similar Questions:

Which one of the following is a plant hormone?
  1. A) Insulin
  2. B) Thyroxin
  3. C) Oestrogen
  4. D) Cytokinin
Assertion (A): In recent times, the growth in the public sector employment has been very sluggish in India.
Reason (R): There has been reassessment of the role of State in economic development.
  1. A) Both A and R are true and R is the correct explanation of A
  2. B) Both A and R are true but R is not the correct explanation of A
  3. C) A is true but R is false
  4. D) A is false but R is true
If an unsaturated sugar solution is prepared by mixing 100 grams of sugar with half a litre of water, which of the following physical quantities will not change?
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  3. C) concentration
  4. D) volume
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  2. B) Rice
  3. C) Wheat
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  2. B) Solar cells
  3. C) Dynamo
  4. D) Small nuclear reactor
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  2. B) Mesosphere
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Vinegar is an aqueous solution of:
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Consider the following statements and give the answer with the help of codes given below:

Assertion (A): Only one side of the moon's surface is visible from the earth.
Reason (R): The period of rotation of the moon on its axis is equal to the period of its revolution round the earth.

Code:
  1. A) Both A and R are correct and R is the correct explanation of A.
  2. B) Both A and R are correct but R is not the correct explanation of A.
  3. C) A is correct but R is wrong.
  4. D) A is wrong but R is correct.
White colour of milk is due to the presence of
  1. A) lactose
  2. B) albumins
  3. C) carotenes
  4. D) caseins
Which of the following is the main component of the natural gas?
  1. A) Ethane
  2. B) Butane
  3. C) Carbon mono-oxide
  4. D) Methane
The temperature of the human body:
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  2. B) increases in summers
  3. C) neither decreases in winters nor increases in summers
  4. D) increases in winters
Which one of the following pairs is not correctly matched?
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  2. B) Dry Ice–Solid carbon dioxide
  3. C) Keratin–protein found in the outer layer of human skin
  4. D) Mustard gas–poisonous liquid used in chemical warfare