Chemistry - Comprehensive Mock Test 26

Question 251 Easy

What is the structure of IF7?

A) Triagonal bipyramid B) Pentagonal bipyramid C) Square pyramid D) tetrahedral

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Question 252 Easy

Hydrogen bomb is based on the principle of?

A) natural radioactivity B) nuclear fusion C) nuclear fission D) artificial radioactivity

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Question 253 Medium

A mixture of sand and naphthalene can be separated by?

A) Fractional distillation B) Sublimation C) Chromatography D) Any of them

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Question 254 Easy

The purest form of iron is ?

A) wrought iron B) nickel steel C) steel D) pig iron

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Question 255 Medium

A burning matchstick is brought in contact with hydrogen gas ?

A) The matchstick continues to burn brilliantly B) The matchstick continues to bur t silently with pale blue flame C) Matchstick extinguishes and the gas burns with a ‘pop’ sound D) None of the above

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Question 256 Medium

The element phosphorus makes what part of human weight ?

A) 10% B) 0.50% C) 0.10% D) 1%

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Question 257 Easy

CuSO4.5H2O is the chemical formula of?

A) Caustic soda B) Washing soda C) Blue vitriol. D) Ammonium Sulphate.

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Question 258 Easy

The main constituent of biogas is?

A) Hydrogen B) Methane C) Butane D) Acetylene

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Question 259 Easy

One fathom is equal to?

A) 6 metres B) 6 feet C) 60 feet D) 60 cms

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Question 260 Easy

Epoxy resins is used as?

A) Moth repellants B) Insecticides C) Detergents D) Adhesives

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