Chemistry Questions

Q:

The common name of dichlorodifluoromethane is _____.

A) galena B) Freon
C) gypsum D) borax
 
Answer & Explanation Answer: B) Freon

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Q:

........... is not a sub atomic particle of an atom.

A) Neutron B) Electron
C) Xenon D) Proton
 
Answer & Explanation Answer: C) Xenon

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Q:

Atomic number of which of the following elements is greater than that of Copper?

A) Iron B) Chromium
C) Zinc D) Manganese
 
Answer & Explanation Answer: C) Zinc

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Q:

Which among the following metal is used for galvanization?

A) Zinc B) Copper
C) Iron D) Silver
 
Answer & Explanation Answer: A) Zinc

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Q:

There are ............ metalloids in the modern periodic table.

A) 5 B) 4
C) 7 D) 6
 
Answer & Explanation Answer: D) 6

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Q:

Name the acid present in lemon.

A) Phosphoric acid B) Carbonic acid
C) Citric acid D) Malic acid
 
Answer & Explanation Answer: C) Citric acid

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Q:

What is the process of rust forming on iron called?

A) Rusting B) Crystallisation
C) Shovel D) Spade
 
Answer & Explanation Answer: A) Rusting

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Q:

Trinitrotoluene is

A) used to melt metals B) used to fuse two metals
C) used as an abrasive D) used as an explosive
 
Answer & Explanation Answer: D) used as an explosive

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