Question # 1

Gases have fixed ____________

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Shape

Volume

Area

Nil

Atoms reacts with each other because:

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They are attracted to each other

they are short of electrons

they want to attain stability

they want to disperse

Transfer of electrons between atoms results in:

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metallic bonding

ionic bonding

covalent bonding

coordinate covalent bonding

The molecular mass of water is

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16 amu

14 amu

18 amu

20 amu

Which one of the following does not affect the boiling point?

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intermolecular forces

external pressure

nature of liquid

initial temperature of liquid

The number of periods is:

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6

7

8

9

4th & 5th consist of ________________ elements.

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8

18

32

infinite

Sort out a compound from the following

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Air

Salt

Ice-cream

Iron

The elements of group 17 are called:

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Carbon family

Noble gases

Alkaline earth metals

Halogen family

The cathode of Nelson's cell is made up of

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C

Zn

Cu

Fe

_________ is an example of substance.

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Carbon

Hydrogrn

Oxygen

Water

Protons carry _________ charge.

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+

_

No

Neutral

The earth is made up of ___________ % of iron.

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4

5

6

7

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