set 3 MCQ Questions & Answers Detailed Explanation

Question : 1

The substance used as moderator and coolant both, in nuclear reactors is

a) Liquid Hydrogen

b) Liquid Ammonia

c) Ordinary water

d) Heavy water

Question : 2

Which one of the following is also called Stranger Gas?

a) Neon

b) Xenon

c) Argon

d) Nitrous Oxide

Question : 3

How much carbon does steel contain?

a) Zero

b) 10-50%

c) 0.1-2%

d) 7-10%

Question : 4

Which one of the following mixture of gas is used by the deep sea divers?

a) Mixture of Helium-Nitrogen

b) Mixture of Oxygen-Acetylene

c) Mixture of Helium-Oxygen

d) Mixture of Oxygen-Hydrogen

Question : 5

The plates of galvanized iron remains protected from rust because the existence of

a) Bung

b) Zinc

c) Lead

d) Chromium

Question : 6

Which of the following elements are included in stainless steel?

a) Iron, Zinc, Chromium and Carbon

b) Iron, Chromium, Manganese and Carbon

c) Chromium, Nickel and Iron

d) Nickel, Iron and Carbon