Question # 1

Chemical bond in O2 is.

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Ionic

Covalent

Metallic

None of these

Oxygen is a

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Monoalent element

Divalent element

Trivalent element

Tertravalent element

Negatively charged atom or grop of atoms is called.

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Proton

Electron

Anion

Cation

Outermost shell of sodium atom has ...... electrons.

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1

2

3

4

Which of teh following is cation.

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H2

H2O

CO2

NH+4

Positively charged atom or grouping of atoms is called.

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Anion

Cation

Neutron

Proton

Which of the following is an anion.

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F

Cl

S-2

NH3

Outermost shell of chlorine stom has................. electrons.

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1

2

6

7

While writing a chemical formula positive ionis written on.

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Right

Left

Center

All of these

Types of coalent bond are

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1

2

3

4

When water molecule gain a proton it form

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H+

OH-

H3O

H2O

Valency of nitrogen is

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1

2

3

4

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General Science 7th Class English Medium Chapter 6 Online Test MCQs With Answers

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