set 4 MCQ Questions & Answers Detailed Explanation

Question : 1

Combination of which substance in the alloy renders stainless steel non-magnetic?

a) Molybdenum

b) Nickel

c) Carbon

d) Chromium

Question : 2

Which of the following do not consist carbon?

a) None of these

b) Diamond

c) Graphite

d) Coal

Question : 3

An element X has four electrons in its outermost orbit. What will be the formula of its compounds with hydrogen?

a) $XH_4$

b) $XH_3$

c) $X_4H$

d) $X_4H_4$

Question : 4

The gas used in the manufacture of Vanaspati Ghee from Vanaspati Oil is

a) Carbon dioxide

b) Nitrogen

c) Hydrogen

d) Oxygen

Question : 5

The foul smell of dead fish is due to the compound

a) Aldehydic compounds

b) Sulphur compounds

c) Amino compounds

d) Nitro compounds

Question : 6

Heavy water is that water

a) In which isotopes takes place of Oxygen

b) In which isotopes takes place of Hydrogen

c) The temperature of which is kept constant at 4ºC

d) In which insoluble salts of Calcium and Potassium are present