Chemistry Gk - 1

Question: 1

The elements present in zero group are called

(A) Alkali earth metals

(B) Alkali metals

(C) Transition

(D) Inert gases

Ans: D

Inert gases

Question: 2

A mixture of naphthalene and sand separated by

(A) sublimation

(B) sedimentation

(C) using a magnet

(D) evaporation

Ans: A

sublimation

Question: 3

The firstly synthesized organic compound in the laboratory is

(A) Methane

(B) Urea

(C) Acetic acid

(D) Formic acid

Ans: B

Urea

Question: 4

The major ingredient of leather is

(A) Nucleic acid

(B) Polymer

(C) Carbohydrate

(D) Collagen

Ans: D

Collagen

Question: 5

Which of the following gases is used for refrigeration?

(A) Ammonia

(B) Phosphine

(C) Chlorine

(D) Sulphur dioxide

Ans: A

Ammonia

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