Question # 1

Diamonds is ____________

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Soft

Hard

Bulky

Nil

The property of being polar in nature is called:

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Polarity

Chemistry

Both

Nil

____________ is prevented by Metallic coating.

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NaCl

Rust

All

None of these

............. are sonorous.

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Metals

Solids

Metals

Force

The oxidation number of chromium in K₂Cr₂O₇ is:

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+2

+6

+7

+14

The transition temperature of sulphur is:

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96 °C

250 °C

18 °C

218 °C

The no.of elements in the first period is

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2

8

18

23

The symbol of barium is:

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Ba

Bi

Br

B

________________ cannot be seen by naked eye.

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Matter

Molecules

Solid

Liquids

The mathematical formula of Boyle's law is:

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PV = k

PT = k

V = kT

T = Vk

The unit of Molarity is :

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Molar

Volume

Both

Nil

Carbon exists in ________________ allotropic forms.

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1

2

3

4

The other name of modern periodic table is ________________ of periodic table.

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Long form

Simplified

Simplest

Nil

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