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Q:

........... compound is used as a drying agent.

A) Calcium oxide B) Calcium carbide
C) Gypsum D) Calcium carbonate
 
Answer & Explanation Answer: A) Calcium oxide

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Q:

Which one of the following forms of phosphorus is most reactive?

A) Black phosphorus B) White phosphorus
C) Violet phosphorus D) Red phosphorus
 
Answer & Explanation Answer: B) White phosphorus

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Q:

Potassium Permanganate is used for purifying drinking water, because________

A) It is a reducing agent B) It is an oxidising agent
C) It is a sterilising agent D) It dissolves the impurities of water
 
Answer & Explanation Answer: B) It is an oxidising agent

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Q:

Which method will be employed to test the hardness of water?

A) Boiling B) Distillation
C) Formation of lather with soap D) None of these
 
Answer & Explanation Answer: C) Formation of lather with soap

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Q:

Which of the following is a greenhouse gas or a gas which can deplete the ozone layer?

A) BCl3 B) Ni(CO)4
C) CH3OH D) CClF3
 
Answer & Explanation Answer: D) CClF3

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Q:

The Chairman of the Drafting Committee of the Constituent Assembly of India was

A) K.M. Munshi B) D.P. Khaitan
C) Dr. B.R. Ambedkar D) T.T. Krishnamachari
 
Answer & Explanation Answer: C) Dr. B.R. Ambedkar

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Q:

What is a bug in computer terminology?

A) A virus B) A program
C) An error in program D) Magnetic disk storage device
 
Answer & Explanation Answer: C) An error in program

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Q:

Backing storage is so named because it

A) is always kept at the back of the CPU B) backs up the computer
C) lags behind the main memory D) is slow and backward
 
Answer & Explanation Answer: B) backs up the computer

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