alloys, carbon & its various forms, hydrogen & compounds, sulphur, nitrogen, halogen & inert gases - Category wise Question and Answer Practice Test with Solutions

Question : 6 [PSC (Pre) 2015]

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

Question : 7 [PCS (Pre) 2016]

The foul smell of dead fish is due to the compound

a) Aldehydic compounds

b) Sulphur compounds

c) Amino compounds

d) Nitro compounds

Question : 8 [BPSC (Pre) 2016]

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

a) Carbon dioxide

b) Nitrogen

c) Hydrogen

d) Oxygen

Question : 9 [UPPCS (Mains) 2013]

Which one of the following materials is strongest?

a) Graphene

b) German Silver

c) Brass

d) Steel

Question : 10 [PCS (Pre) 2010]

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

a) Molybdenum

b) Nickel

c) Carbon

d) Chromium