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

Question : 11 [UP (Pre) 2004]

Which one of the following mixture of gas is used by the deep sea divers?

a) Mixture of Helium-Nitrogen

b) Mixture of Oxygen-Acetylene

c) Mixture of Helium-Oxygen

d) Mixture of Oxygen-Hydrogen

Question : 12 [UPPCS (Spl)(Mains) 2004]

Steel is further processed to obtain stainless steel by adding some element. Which one of the following is not used for this purpose?

a) Nickel

b) Manganese

c) Carbon

d) Silicon

Question : 13 [PSC (Pre) 2018]

The substance used as moderator and coolant both, in nuclear reactors is

a) Liquid Hydrogen

b) Liquid Ammonia

c) Ordinary water

d) Heavy water

Question : 14 [IAS (Pre) 2008]

Which one of the following is also called Stranger Gas?

a) Neon

b) Xenon

c) Argon

d) Nitrous Oxide

Question : 15 [PSC (Pre) 2015]

How much carbon does steel contain?

a) Zero

b) 10-50%

c) 0.1-2%

d) 7-10%