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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