set 2 MCQ Questions & Answers Detailed Explanation

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The following question based on alloys, carbon & its various forms, hydrogen & compounds, sulphur, nitrogen, halogen & inert gases topic of general science mcq

Questions : Which is used as Laughing gas?

(a) Nitrogen dioxide

(b) Nitrogen trioxide

(c) Nitrous oxide

(d) Nitrogen tetra oxide

The correct answers to the above question in:

Answer: (c)

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Read more chemistry gk quiz Based General Science Questions and Answers

Question : 1

In order to compensate the deficiency of which of the following elements, the insectivorous plants trap and eat insects?

a) Nitrogen

b) Magnesium

c) Manganese

d) Sulphur

Answer: (a)

Question : 2

Which of the following is not optically active?

a) Alanine

b) Serine

c) Glycine

d) All of these

Answer: (c)

Question : 3

Pencil lead is

a) Coal

b) Graphite

c) Charcoal

d) Lamp black

Answer: (b)

Question : 4

Helium is preferred to Hydrogen in air balloons because it

a) Is less dense

b) Has greater lifting power

c) Is cheaper

d) Does not form an explosive mixture with air

Answer: (d)

Question : 5

Which of the following is made up of Carbon only?

a) Spider silk

b) Kevlar

c) Lexan

d) Graphene

Answer: (d)

Question : 6

The highest amount of carbon is in

a) Alloy Steel

b) Pig Iron

c) Wrought Iron

d) Steel

Answer: (b)

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