GATE Questions

Q:

Nucleus of Hydrogen atom consists of

A) 2 protons only B) 2 neutrons only
C) 1 proton only D) 1 electron only
 
Answer & Explanation Answer: C) 1 proton only

Explanation:

The nucleus of hydrogen consists of only a single proton.

Its parts are a single negatively-charged electron that circles a single positively-charged nucleus of the hydrogen atom.

The electron is bound to the nucleus by the Coulomb force.

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Filed Under: Chemistry
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Q:

IF YOU HAVE ME, YOU WANT TO SHARE ME. IF YOU SHARE ME, YOU HAVEN'T GOT ME. WHAT AM I?

Answer

A Secret is what you want to share if you have with you. And if you share that secret with anyone, then secret will not be with you only.

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Q:

An owner of a Dry fruits shop sold small packets of mixed nuts for Rs. 150 each and large packets for Rs. 250 each. One day he sold 5000 packets, for a total of Rs. 10.50 lakh. How many small packets were sold ?

A) 2000 B) 3000
C) 2500 D) 3500
 
Answer & Explanation Answer: A) 2000

Explanation:

Let 's' be the number of small packets and 'b' the number of large packets sold on that day.

 

Therefore, s + b = 5000 ... eqn (1)

 

Each small packet was sold for Rs.150.
Therefore, 's' small packets would have fetched Rs.150s.

 

Each large packets was sold for Rs.250.
Therefore, 'b' large packets would have fetched Rs.250b.

 

Total value of sale = 150s + 250b = Rs. 10.5 Lakhs (Given)

 

Or 150s + 250b = 10,50,000 ... eqn (2)

 

Multiplying equation (1) by 150, we get 150s + 150b = 7,50,000 ... eqn (3)

 

Subtracting eqn (3) from eqn (2), we get 100b = 3,00,000
Or b = 3000

 

We know that s + b = 5000
So, s = 5000 - b = 5000 - 3000 = 2000.

 

2000 small packets were sold.

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Filed Under: Simplification
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Q:

Praveena took a loan of Rs. 1200 with simple interest for as many years as the rate of interest. If she paid Rs. 432 as interest at the end of the loan period, what was the rate of interest ?

A) 6 B) 7
C) 9 D) 11
 
Answer & Explanation Answer: A) 6

Explanation:

Let rate = R% and time = R years.

 

Then, (1200 x R x R) / 100 = 432

 

=> R = 6.

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Filed Under: Simple Interest
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Q:

Antonym of Sober?

A) not affected by alcohol B) Sensible
C) Serious D) emotional
 
Answer & Explanation Answer: D) emotional

Explanation:

Sober means not afected by alcohol, clear headed, very serious, sensible,...

 

Antonyms of Sober are :: light hearted, frivolous, sensational, emotional,...

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Filed Under: English
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Q:

The famous hill-station Kodaikanal lies in

A) Palani hills B) Javadi hills
C) Nilgiri hills D) Cardamom hills
 
Answer & Explanation Answer: A) Palani hills

Explanation:

The famous hill-station Kodaikanal lies in Palani hills.

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Filed Under: Indian Geography
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Q:

Name another word for friend?

A) playfellow B) enemy
C) rival D) foe
 
Answer & Explanation Answer: A) playfellow

Explanation:

Friend is a person with whom one has a bond of mutual affection, typically one exclusive of sexual or family relations.

 

Other names for friend are mate, bosom friend, classmate, buddy, ally,...

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Filed Under: English
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Q:

Which of the following sentences is grammatically correct?

A) We had gone to the party last night B) I have seen him yesterday
C) The hen has laid 10 eggs D) She is sleeping for 2 hours
 
Answer & Explanation Answer: C) The hen has laid 10 eggs

Explanation:

In the above given sentences, only option C) The hen has laid 10 eggs is gramatically correct.

 

A) Not correct - We had gone to the party last night

Correct - We went to the party last night

 

B) Not correct - I have seen him yesterday

Correct - I saw him yesterday (We do not use the present perfect tense with past time expressions.)

 

D) Not correct - She is sleeping for 2 hours

Correct - She has been sleeping for two hours. (We use the present perfect continuous tense to show duration.)

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Filed Under: English
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