Chemistry - Comprehensive Mock Test 29

Question 281 Medium

An element X forms an oxide XO3 What is the valency of X?

A) 1 B) 2 C) 3 D) 6

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Question 282 Easy

The word ‘insolation’ means?

A) Matters which insulates B) Incoming solar radiation C) Insoluble matters D) None of the above

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Question 283 Easy

Neutron was discovered by?

A) J. J. Thomson B) Chadwick C) Rutherford D) Priestley

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Question 284 Medium

Who among the following proposed that atom is indivisible?

A) Dalton B) Berzelius C) Rutherford D) Avogadro

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Question 285 Easy

Oxygen and ozone are ?

A) allotropes B) isomers C) isotopes D) isobars

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Question 286 Easy

Bar is a unit of?

A) pressure B) force C) energy D) frequency

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Question 287 Easy

The most abundant elements is?

A) Silicon B) Calcium C) Nitrogen D) Oxygen

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Question 288 Easy

The major combustible component of gobar (cow?

A) Methane B) Carbon dioxide C) Hydrogen D) Propane

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Question 289 Easy

The National Chemical Laboratory is located in?

A) Mumbai B) Bengaluru C) Hyderabad D) Pune

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Question 290 Easy

What is the pH of pure water ?

A) 1 B) 7 C) 5 D) 12

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