set 4 MCQ Questions & Answers Detailed Explanation

Question : 1

Match List-I with List-II and select the correct answer using the codes given below the lists:

a) 4 3 2 1

b) 3 4 1 2

c) 3 4 2 1

d) 4 3 1 2

Question : 2

Which one among the following is a double salt ?

a) CuSO₄ · 5H₂O

b) K₄[Fe(CN)₆]

c) K₂SO₄ · A1₂(SO₄)₃ · 24H_2O

d) NaCl

Question : 3

Baking powder is

a) a compound

b) an element

c) a mixture

d) a salt

Question : 4

Which one of the following materials is very hard and very ductile?

a) Cast iron

b) Carborundum

c) Tungsten

d) Nichrome

Question : 5

Food cans are coated with tin and not with zinc because

a) zinc is more reactive than tin.

b) zinc is costlier than tin.

c) zinc has a higher melting point than tin.

d) zinc is less reactive than tin.

Question : 6

Calamine solution contains

a) zinc carbonate

b) sodium hydrogen carbonate

c) zinc hydroxide

d) magnesium hydroxide