set 4 MCQ Questions & Answers Detailed Explanation

Question : 1

Statement I:
Soaps do not form lather with water containing salts of calcium and magnesium.
Statement II:
Calcium and magnesium salts of long chain fatty acids are insoluble in water.

a) Both the statements are individually true but Statement II is not the correct explanation of Statement I.

b) Statement I is true, but Statement II is false.

c) Both the statements are individually true and Statement II is the correct explanation of Statement I.

d) Statement I is false, but Statement II is true.

Question : 2

Match List-I with List-II:

a) 4 2 1 3

b) 2 1 3 4

c) 3 1 2 4

d) 4 1 2 3

Question : 3

Which among the following elements is abundant on the lunar surface and holds the potential to put an end to the energy crisis of the earth?

a) Helium-II

b) Helium-III

c) Helium-I

d) Helium-IV

Question : 4

Mercury is basically used in thermometer devices because its especiality is

a) High liquidity

b) High circulation power

c) High density

d) High specific heat

Question : 5

Which of the following is not a nitrogenous fertilizer?

a) CaCN₂

b) NH₄NO₃

c) Ca(CN)₂

d) Urea

Question : 6

Horn silver is

a) a carbonate ore of silver

b) an oxide ore of silver

c) a sulphite ore of silver

d) a chloride ore of silver