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

Question : 21 [IAS (Pre) 1996]

Which of the following elements is added to iron to produce steel which can resist high temperature, have high hardness and abrasion resistance?

a) Tungsten

b) Nickel

c) Aluminium

d) Chromium

Question : 22 [PCS (Pre) 2011]

Brass is a combination of what metals?

a) Copper + Zinc and Nickel

b) Copper and Zinc

c) Copper and Nickel

d) Copper and Tin

Question : 23 [UPPCS (Pre) 2005]

Solder used in soldering metal pieces consists of any alloy of

a) Tin, Lead and Zinc

b) Tin, Zinc and Copper

c) Tin and Zinc

d) Tin and Lead

Question : 24 [PSC (Pre) 2017]

Which of the following do not contain carbon?

a) Sand

b) Diamond

c) Graphite

d) Coal

Question : 25 [PSC (Pre) 2016]

Which gas is known as ‘noble gas’?

a) Oxygen

b) Helium

c) Hydrogen

d) Carbon dioxide