Question # 1

At ____________ °C water converts to ice.

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101°

100°

99°C

100.2°C

Ionic compound are ________________ in water.

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insoluble

Soluble

Covalent

Solvent

The no.of neutrons in deutrium is

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1

2

3

4

..................... is property of metals.

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Gases

Lustrous

Solids

Nil

PCL5 is ________________ shaped.

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Bipyromidal

Angular

Triangular

Linear

The no.of electrons in the valence shell of noble gases is

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1

6

7

8

Non-metals are generally soft, but which one of the following is extremely hard?

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Graphite

Phosphorus

Iodine

Diamond

Which one of the following pair has the same mass?

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1 mole of CO and 1 mole of N₂

1 mole of CO and 1 mole of CO₂

1 mole of O₂ and 1 mole of N₂

1 mole of O₂ and 1 mole of CO₂

_____________ revolves in orbits around nucleus.

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Electron

Proton

Neutrons

Nil

Atoms form chemical bonds to attain the electronic configuration of

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Halogens

Noble gases

Alkali metals

Alkaline earthmetals

Which is a polar molecule?

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HCI

H₂

CI₂

O₂

A binary solution consists of:

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One component

Two components

Three components

Many components

Canal rays are actually

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Electrons

Protons

Neutrons

X-rays

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