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Q:

Which of the following can undergo sublimation?

A) Ammonium chlorate B) Ammonium sulphate
C) Ammonium chloride D) Ammonium sulphide
 
Answer & Explanation Answer: C) Ammonium chloride

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Q:

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

A) CH2ClF B) C2H2
C) PF5 D) COCl2
 
Answer & Explanation Answer: A) CH2ClF

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Q:

Uraninite is an ore/mineral of _______.

A) Zinc B) Uranium
C) Titanium D) Aluminium
 
Answer & Explanation Answer: B) Uranium

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Q:

Molybdenite is an ore/mineral of

A) Molybdenum B) Nickel
C) Silver D) Tin
 
Answer & Explanation Answer: A) Molybdenum

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Q:

Nitrification is the biological process of converting

A) N2 into nitrate B) N2 into nitrite
C) Ammonia into nitrite D) Ammonia into N2
 
Answer & Explanation Answer: C) Ammonia into nitrite

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Q:

What is the chemical name of chalk?

A) Calcium Sulphate B) Calcium Nitrate
C) Calcium Carbonate D) Calcium Phosphide
 
Answer & Explanation Answer: C) Calcium Carbonate

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Q:

In an acid base reaction which product is produced along with a salt?

A) Hydrogen gas B) Water
C) Oxygen gas D) Carbon dioxide
 
Answer & Explanation Answer: B) Water

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Q:

What is dehydration?

A) Removal of acid from a molecule B) Removal of base from a molecule
C) Removal of water from a molecule D) Removal of alkali from a molecule
 
Answer & Explanation Answer: C) Removal of water from a molecule

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