Question # 1

NaCl + H2O is ____________ solutions.

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Aqueous

Binary

H2O

Nil

All of the following are tri-atomic molecules except:

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H²

O³

H²O

CO²

Which pair of compounds is soluble?

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Ether and water

KCI and water

Benzene and water

Petrol and water

Metals are covered by using.

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Baeyer's test

Bohr's

Electrolysis

None

The equation of relationship between atomic number (Z) and mass number (A) is

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A = Z + N

A = Z - n

A = Z

A =2Z + n

Molarity is the number of moles of solute dissolved in:

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1 kg of solution

100 g of slovent

Idm³ of solvent

I dm³ of solution

A two component solution is called ____________ solutions.

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Binary

Once

Both

None

Gain of electrons in a reaction is called ____________reaction.

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Oxidation

Reduction

Both

Nil

First energy level is denoted by:

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K

L

M

N

Copper extracted from its ore is ____________ % pure.

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98%

99%

96%

Nil

____________ Is drawn in wires.

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Gold

Silver

Helium

Nil

Which one of the following non-metal is lustrous?

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Sulphur

Phosphorus

Iodine

Carbon

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

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Metals

Solids

Metals

Force

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