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

Question : 11 [RAS/RTS (Pre) 1994]

An unknown gas quickly dissolves in water. This gaseous aqueous solution turns red litmus into the blue. This gas produces hydrogen chloride with a white flame. This unknown gas is

a) Nitric hydroxide

b) Ammonia

c) Sulphur dioxide

d) Carbon monoxide

Question : 12

When vinegar reacts with baking soda the gas evolved is

a) oxygen

b) carbon dioxide

c) hydrogen

d) nitrogen dioxide

Question : 13 [NDA]

The acid in gastricjuice is

a) hydrochloric acid

b) acetic acid

c) nitric acid

d) sulphuric acid

Question : 14 [PSC (Pre) 2017]

A solution turns red litmus blue. The pH of solution is

a) 1

b) 5

c) 7

d) None of these

Question : 15 [NDA]

Which one among the following is an electrochemical cell that cannot be charged ?

a) Primary cell

b) Electrolytic cell

c) Storage cell

d) Fuel cell