Question # 1

The no. of periods in modern periodic table are

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7

11

18

23

H2O is what type of molecules it is:

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Manoatomic

Polyatomic

Pentaatomic

Nil

Which one of the following is the weakest force among the atom?

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ionic force

metallic force

intermolecular force

covalent force

How many covalent bond does C₂H₂ molecule have?

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two

three

four

five

_____________ revolves in orbits around nucleus.

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Electron

Proton

Neutrons

Nil

____________ Metals are electronegative in nature.

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Pure-

Noble-

Non-

Nil

The transition temperature of sulphur is:

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96 °C

250 °C

18 °C

218 °C

The fundamental unit of elements is ___________

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Molecule

Atom

Matter

Mixture

Dissolution in water is due to ____________ bonding.

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Ionic

Covalent

Hydrogen

Nil

The bond in covalent compound is ________________

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Covalent

Ionic

Dative

Couple

The number of proton in an atom is called _________ number.

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Molecule

Formula

Atomic

Molar

Potassium's atomic no. is :

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17

18

19

20

In common, a solution has ___________ components.

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1

2

3

4

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