Metals, Non Metals, Minerals, Ores, Properties, Uses - Category Wise Question And Answer Practice Test With Solutions

Question : 6 [BPSC (Pre) 2015]

Which is the most reactive metal?

a) Calcium

b) Iron

c) Sodium

d) Potassium

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Question : 7 [NDA]

Yellow colour of usual nitric acid is due to the presence of which one of the following?

a) NO

b) N₂₅

c) N₂O

d) NO₂

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Question : 8 [UPPCS (Pre) 2006]

The most commonly used substance in fluorescent tubes are

a) Sodium Vapour and Neon

b) Mercury Vapour and Argon

c) Sodium Oxide and Argon

d) Mercuric Oxide and Neon

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Question : 9 [NDA]

Which one among the following does not have an allotrope?

a) Sulphur

b) Nitrogen

c) Oxygen

d) Carbon

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Question : 10

Which of the following is a good conductors of heat and electricity?

a) Chlorine

b) Graphite

c) Oxygen

d) Nitrogen

Answer »