set 3 MCQ Questions & Answers Detailed Explanation

Question : 1

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

a) Bung

b) Zinc

c) Lead

d) Chromium

Question : 2

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 : 3

Steel is further processed to obtain stainless steel by adding some element. Which one of the following is not used for this purpose?

a) Nickel

b) Manganese

c) Carbon

d) Silicon

Question : 4

Which one of the following catalysts is used in hydrogenation of vegetable oils?

a) Iron

b) Nickel

c) Zinc

d) Platinum

Question : 5

Which of these is not an additional form of Carbon?

a) Fullerenes

b) Diamond

c) Graphite

d) Oxocarbon

Question : 6

Which gas is usually filled in the balloon?

a) Oxygen

b) Carbon dioxide

c) Hydrogen

d) Helium