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

Question : 21 [BPSC (Pre) 1999]

Alloy of which metal is used to make aeroplane and parts of the compartment of the train?

a) None of these

b) Aluminium

c) Copper

d) Iron

Question : 22 [IAS (Pre) 2008]

Who among the following discovered heavy water?

a) Joseph Priestly

b) G. Mendel

c) Heinrich Hertz

d) H.C. Urey

Question : 23 [UPPCS (Mains) 2007]

Heavy water

a) Contains organic impurities

b) Contains more dissolved minerals and salts

c) Contains more dissolved air

d) Contains deuterium in place of Hydrogen

Question : 24 [UP (Spl)(Pre) 2008]

Which of the following alloys has a maximum percentage of Copper?

a) Gun Metal

b) German Silver

c) Brass

d) Bronze

Question : 25 [MPPCS (Pre) 2000]

Which is the purest form of water?

a) Distilled water

b) Rain water

c) Tap water

d) Sea water