Questions

Q:

Which one of the following statements is correct?

A) The oxidation number for hydrogen is always zero. B) The oxidation number for hydrogen is always + 1.
C) The oxidation number for hydrogen is always -1. D) Hydrogen can have more than one oxidation number.
 
Answer & Explanation Answer: D) Hydrogen can have more than one oxidation number.

Explanation:

Hydrogen has two possible oxidation numbers: +1 and -1.

-1 in case of hydrides.

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Q:

On a clean glass plate a drop of water spreads to form a thin layer whereas a drop of mercury remains almost spherical because ________

A) Mercury is a metal B) Density of mercury is greater than that of water
C) Cohesion of mercury is greater than its adhesion with glass D) Cohesion of water is greater than its adhesion with glass
 
Answer & Explanation Answer: C) Cohesion of mercury is greater than its adhesion with glass

Explanation:
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Q:

Which of the following allotropes of Carbon is used as a reducing agent in metallurgy?

A) Carbon Black B) Graphite
C) Charcoal D) Coke
 
Answer & Explanation Answer: D) Coke

Explanation:
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Q:

In the following question, out of the four alternatives, select the alternative which will improve the bracketed part of the sentence. In case no improvement is needed, select "no improvement".

 

Husband (have retired) from service and the daughters had left home to pursue their dreams.

 

A) had retired B) had retire
C) had retiring D) no improvement  
 
Answer & Explanation Answer: A) had retired

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Q:

 In the following question, four words are given out of which one word is correctly spelt. Select the correctly spelt word.

A) symptommatically B) symptomaticaly
C) symptomatically D) symptommaticaly
 
Answer & Explanation Answer: C) symptomatically

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Q:

In the following question, a word has been written in four different ways out of which only one is correctly spelt. Select the correctly spelt word.

A) Camouflage B) Cameousflage
C) Camouflege D) Camioflaeg
 
Answer & Explanation Answer: A) Camouflage

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Q:

A sentence has been given in Direct/Indirect Speech. Out of the four given alternatives, select the one which best expresses the same sentence in Indirect/Direct Speech.

 

Bunty says, “I may not come for the practice today.”

 

A) Bunty says that he may not come for the practice today.   B) Bunty says that he might not come for practice today.  
C) Bunty said that he might not come for the practice that day.   D) Bunty told me he won’t come to the practice.
 
Answer & Explanation Answer: A) Bunty says that he may not come for the practice today.  

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Q:

In the following question, out of the four alternatives, select the alternative which best expresses the meaning of the idiom/phrase.

 

an axe to grind

 

A) preparing for a fight B) to have a problem with something or someone
C) some important task to do D) one's skill should always be practiced or their edge becomes blunt
 
Answer & Explanation Answer: B) to have a problem with something or someone

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