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

Question : 16 [IAS (Pre) 1994]

One mole of Hydrogen gas burns in excess of Oxygen to give 290 kJ of heat. What is the amount of heat produced when 4g of Hydrogen gas is burnt under the same conditions?

a) 1160 kg

b) 580 kg

c) 145 kg

d) 290 kg

Question : 17 [PCS (Pre) 2013]

Brass gets fade colour in air due to the presence of

a) Nitrogen

b) Carbon dioxide

c) Oxygen

d) Hydrogen sulphide

Question : 18 [UPPCS (Mains) 2016]

Which one of the following elements forms the maximum number of compounds?

a) Oxygen

b) Hydrogen

c) Carbon

d) Nitrogen

Question : 19 [RAS/RTS (Pre) 2007]

Which one of the following elements is not present in the German Silver?

a) Nickel

b) Zinc

c) Copper

d) Aluminium

Question : 20 [PSC (Pre) 2018]

Which one of the following is not correctly matched?

a) Boric acid is used in pharmaceutical industry and also as a food preservative

b) Dry ice is solid Carbon dioxide

c) Bordeaux mixture is a mixture of Copper (II) Sulphate and Calcium Hydroxide in water and is used as a fungicide

d) Nitric oxide is a laughing gas