acids, bases, salts and metals - Category wise Question and Answer Practice Test with Solutions

Question : 6

Chemical formula of baking soda is –

a) Na₂CO₃

b) NaHCO₃

c) MgSO₄

d) MgCO₃

Question : 7 [NDA]

Two elements gallium and oxygen combine to form a compound Ga₂O₃. Which among the following is the valency of gallium ?

a) 3

b) 1

c) 2

d) 4

Question : 8

Which of the following is not a hydrated salt?

a) Baking soda

b) Washing soda

c) Blue vitriol

d) Epsom salt

Question : 9

Which one among the following is not a property of salt?

a) Salts are brittle

b) Salts have ordered packing arrangements called lattices

c) Salts have low melting points but high boiling points

d) Salts conduct electricity when dissolved in water or even in the molten state

Question : 10

Bleaching powder gives smell of chlorine because it –

a) gives chlorine on exposure to atmosphere

b) is a mixture of chlorine and slaked lime

c) is unstable

d) contains excess of chlorine