Question # 1

The solubility of which salt increases in heating?

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Li₂SO₄

Ce₂(SO₄)₃

NaCI

KCI

CO2 the oxidation number of C =.

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+1

+2

+3

+4

Alpha particles are double charged.

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Negative

Positive

Can be both

Nil

The atomic number is represented by ____________

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A

Y

X

Z

It is heterogeneous mixture

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Sand

Milk

Air

Brass

Which gas will diffuse faster than others?

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Hydrogen

Oxygen

Chlorine

Nitrogen

Which of the following result in discovery of proton?

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cathode rays

canal rays

x-rays

alpha rays

The most abundant element occurring in the oceans is:

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Oxygen

Hydrogen

Nitrogen

Silicon

If the solute-solute forces are strong enough than those of solute- solvent force, The solute:

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dissolves readily

does not dissolve

dissolve slowly

dissolves and precipitates

Carbon forms ____________ bonds in diamonds.

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4

3

6

9

Which one of the following metals burns with a brick red flame?

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Sodium

Magnesium

Iron

Calcium

The example of solution of a solid solute in a solid solvent is

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Brass

Fog

Cheese

Air

The value of Avogadro 'no is:

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6.023×1024

6.023×1026

6.023×1023

6.023×1020

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