GATE Questions

Q:

Which equation represents a neutralization reaction?

A) 2Al(OH)3(s) ---> Al2O3(s) + 3H2O(l) B) H2SO4(aq) + 2NaOH(aq) ---> Na2SO4(aq) + 2H2O(l)
C) 2H2(g) + O2(g) ---> 2H2O(l) D) H2CO3(aq) ---> CO2(g) + H2O(l)
 
Answer & Explanation Answer: B) H2SO4(aq) + 2NaOH(aq) ---> Na2SO4(aq) + 2H2O(l)

Explanation:

Here in the option B) H2SO4 - Sulfuric acid is reacting with sodium hydroxide (NaOH), a base to produce a salt (Sodium Sulfate), and water (H2O). This is characteristic of of acid-base neutralization reactions.

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Q:

In how many different ways can the letters of the word 'RITUAL' be arranged?

A) 720 B) 5040
C) 360 D) 180
 
Answer & Explanation Answer: A) 720

Explanation:

The number of letters in the given word RITUAL = 6

Then, 

Required number of different ways can the letters of the word 'RITUAL' be arranged = 6!

=> 6 x 5 x 4 x 3 x 2 x 1 = 720

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Q:

Which planet is known as the Morning Star or the Evening Star?

A) Jupiter B) Venus
C) Mercury D) Saturn
 
Answer & Explanation Answer: B) Venus

Explanation:

Venus planet is known as the Morning Star or the Evening Star.

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Q:

Who makes it has no need of it.

What is it?

Answer

A Coffin.

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Q:

What element behaves most like magnesium?

A) Sr B) S
C) Si D) Sn
 
Answer & Explanation Answer: A) Sr

Explanation:

We know that, elements in the same group of the periodic table have similar characteristics. Here magnesium and strontium are the same 2nd group elements and have same behavior. 

Therefore, strontium behaves same as magnesium. 

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Q:

Which country is now the 2nd largest consumer and importer of the LPG in the world?

A) USA B) Japan
C) China D) India
 
Answer & Explanation Answer: D) India

Explanation:

The 2nd largest consumer and importer of the LPG in the worldis India.

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Q:

In the following question, select the related word pair from the given alternatives.

Nest : Bird : : ? : ?

A) King : Palace B) Sty : Horse
C) Web : Spider D) Lion : Den
 
Answer & Explanation Answer: C) Web : Spider

Explanation:
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Filed Under: Analogy
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Q:

The law of conservation of mass states that mass cannot be changed overtime.

A) TRUE B) FALSE
Answer & Explanation Answer: A) TRUE

Explanation:

The law of conservation of mass states that in any closed system the mass of the system is neither created nor destroyed over time i.e, the mass cannot be changed overtime.


 


Hence, the given statement is true.

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