Question # 1

The molecular mass of water is

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16 amu

14 amu

18 amu

20 amu

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

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2

4

8

2 or 8

Water dissolves ____________ compound.

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Ionic

Polar covalent

A & B

Nil

H° - H° has ________________ energy.

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Lower

Higher

Medium

Nil

The fundamental unit of elements is ___________

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Molecule

Atom

Matter

Mixture

Th name of chemist who arranged all the elements in the periodic tale is :

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J.Newlands

Columb

Einstine

None of these

CO2 the oxidation number of C =.

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+1

+2

+3

+4

A heterogeneous mixture of different substance are called:

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Solution

Suspension

Colloids

Nil

NaCl + H2O is ____________ solutions.

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Aqueous

Binary

H2O

Nil

Which one is not a property of electrolytic cell?

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It consists of one complete cell

Anode has +ve charge

It converts electrical energy into chemical one

Anode has -ve charge

NaOH is prepared by ____________ of NaCL (aqueous).

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Electrolysis

Decomposition

A & B

Nil

The simplest of these has formula:

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C60

C10

V20

C30

Gold was used for utensils as early as ____________ BC.

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3400

3500

3600

3700

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