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 Chemistry Questions

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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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Q:

Acids that contain Hydrogen and other non-metallic element(s), except Oxygen, are called

A) Hydracids B) Dilute acids
C) Strong acids D) Weak acids
 
Answer & Explanation Answer: A) Hydracids

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Q:

............ element is represented by the given symbol.

A) Hydrogen B) Mercury
C) Carbon D) Gold
 
Answer & Explanation Answer: B) Mercury

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Q:

Which of the following is a commercial source of energy?

A) Agricultural waste B) Dried dung
C) Sun D) Natural gas
 
Answer & Explanation Answer: D) Natural gas

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Q:

A change in which no new substances are formed is called _____________.

A) Physical Change B) Chemical Change
C) Rusting D) Galvanisation
 
Answer & Explanation Answer: A) Physical Change

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Q:

Limestone is a raw material used by which industry?

A) Aluminium B) Fertilizers
C) Cement D) Petrochemicals
 
Answer & Explanation Answer: C) Cement

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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:

The molecular formula of Propane is

A) C2H6 B) C4H10
C) C3H8 D) CH4
 
Answer & Explanation Answer: C) C3H8

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