Chemistry Questions

Q:

The series of processes by which nitrogen and its compounds are inter-converted in the environment and in living organisms is called _____ .

A) Absorption of Nitrogen B) Ammonification
C) Nitrogen Fixation D) Nitrogen Cycle
 
Answer & Explanation Answer: D) Nitrogen Cycle

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Q:

Which one of the following is a cation?

A) Carbonate B) Nitrate
C) Ammonium D) Hydroxide
 
Answer & Explanation Answer: C) Ammonium

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Q:

Which of the following elements has the lowest melting point?

A) Helium B) Potassium
C) Tungsten D) Sulphur
 
Answer & Explanation Answer: A) Helium

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Q:

......... is a deliquescent compound.

A) Quick lime B) Sulphuric acid
C) Phosphorous pentoxide D) Magnesium chloride
 
Answer & Explanation Answer: D) Magnesium chloride

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Q:

Which among the following is used to generate light, to weld metals?

A) Ethylene B) Acetylene
C) Glycol D) Oxalic acid
 
Answer & Explanation Answer: B) Acetylene

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Q:

Atomic explosion is triggered by

A) thermo nuclear reaction B) chemical reaction
C) controlled chain reaction D) uncontrolled chain reaction
 
Answer & Explanation Answer: D) uncontrolled chain reaction

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Q:

Which of the following gases is known as "Laughing Gas"?

A) Nitrous oxide B) Nitrogen peroxide
C) Nitrogen D) Nitric oxide
 
Answer & Explanation Answer: A) Nitrous oxide

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Q:

Which of the following is not a nitrogenous fertiliser?

A) Ammonium sulphate B) Urea
C) Ammonium nitrate D) Superphospohate
 
Answer & Explanation Answer: D) Superphospohate

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