set 3 MCQ Questions & Answers Detailed Explanation

Question : 1

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

a) Iron

b) Nickel

c) Zinc

d) Platinum

Question : 2

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

Question : 3

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

a) Bung

b) Zinc

c) Lead

d) Chromium

Question : 4

Which gas is usually filled in the balloon?

a) Oxygen

b) Carbon dioxide

c) Hydrogen

d) Helium

Question : 5

What is heavy water?

a) Heavy Hydrogen + Heavy Oxygen

b) Hydrogen + New Oxygen

c) Oxygen + Heavy Hydrogen

d) Hydrogen + Oxygen

Question : 6

Water gas is

a) $CO_2 + H_2O$

b) CO + $H_2$

c) CO + $H_2O$

d) $CO_2 + H_2$