GATE Questions

Q:

If the age of father is 4 years greater than the mother and 28 years greater than the son,then what is the age of the father?

which one should be used to calculate the age ?

A) mother/son = Non-prime number
B) mother/son = Perfect square number

A) only A alone is sufficient B) only B alone is sufficient
C) both A and B are required D) Cannot be answered
 
Answer & Explanation Answer: B) only B alone is sufficient

Explanation:

For the given problem there are three possiblities.
Father's age can be = 36, 31, 29
Mother's age = 32, 27, 25
Son's age = 8, 3, 1.

By using only B it can be calculated.

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Q:

The Kargil War was between India and Pakistan took place in

A) 2001 B) 1983
C) 1999 D) 1989
 
Answer & Explanation Answer: C) 1999

Explanation:

The KargilWar was between India and Pakistan took place between May and July in 1999.

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Filed Under: Indian History
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Q:

Which of the following is true of enzymes?

A) Enzymes lowers the activation energy for the chemical reaction B) Enzymes speed up the rate of a chemical reaction
C) Both A & B D) Neither A nor B
 
Answer & Explanation Answer: C) Both A & B

Explanation:

Enzymes are macromolecular biological catalysts. Enzymes accelerate chemical reactions. The molecules upon which enzymes may act are called substrates and the enzyme converts the substrates into different molecules known as products.

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Filed Under: Biology
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Q:

The chief constituent of gobar gas is

A) Methane B) Carbon dioxide
C) Ethane D) Hydrogen
 
Answer & Explanation Answer: A) Methane

Explanation:
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Filed Under: General Science
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Q:

The C shape of the tracheal cartilages is important because

A) divide the nasal cavity B) Allows for expansion or contraction of the trachea
C) provide a surface for the sense of smell D) All of the above
 
Answer & Explanation Answer: B) Allows for expansion or contraction of the trachea

Explanation:

Allows for expansion or contraction of the trachea. Hence, so large masses of food can pass through the esophagus during swallowing.

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Filed Under: Biology
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Q:

Which of the following is the largest?

A) 12/49 B) 7/30
C) 13/56 D) 11/46
 
Answer & Explanation Answer: A) 12/49

Explanation:

In the given options,

12/49 can be written as 1/(49/12) = 1/4.083

7/30 can be written as 1/(30/7) = 1/4.285

13/56 can be written as 1/(56/13) = 1/4.307

11/46 can be written as 1/(46/11) = 1/4.1818

 

Here in the above,

1/4.083 has the smallest denominator and so 12/49 is the largest number or fraction.

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Filed Under: Numbers
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Q:

Which statements about viruses are true?

A) HIV contains reverse transcriptase. B) A retrovirus contains RNA.
C) Both A & B D) All RNA-containing viruses are retroviruses.
 
Answer & Explanation Answer: C) Both A & B

Explanation:

The statements true about viruses are :

 

1. The capsid enters the host cell if the virus is enveloped.

2. Enveloped viruses bud from the host cell. 

3. HIV contains reverse transcriptase.

4. A retrovirus contains RNA.

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Filed Under: Biology
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Q:

Which of the following uses a Non Renewable Energy Source?

A) Wind Mill Power Plant B) Hydro Electric Plant
C) Nuclear Power Plant D) Tidal Power Plant
 
Answer & Explanation Answer: C) Nuclear Power Plant

Explanation:

Nuclear Power Plant uses a Non Renewable Energy Source.

 

Non-renewable energy is that source of energy which can not be used again and again. This sort of energy is sustainable to exhaustion.


Non renewable energy is that form of energy which is subject to deletion. This type of energy is of many uses to us. It can be used to produce electricity, heating, cooking, transportation and manufacturing. 85% of the energy used in the industrial processes is form the non-renewable type of energy.

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