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Online Tests
Science 7th Class English Medium Chapter 6 Online Test MCQs With Answers
Question # 1
Whcih of the following has double covalent bound.
Choose an answer
Br2
CO2
HCl
N2
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Question # 2
While writing a chemical formula positive ionis written on.
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Right
Left
Center
All of these
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Question # 3
Chemical bond between N2 Molecule is
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Ionic
Single covalent
Double covalent
Triple vocalent
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Question # 4
How many atoms orm one molecuel of chlorine.
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1
2
3
4
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Question # 5
Oxygen is a
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Monoalent element
Divalent element
Trivalent element
Tertravalent element
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Question # 6
Valency of nitrogen is
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1
2
3
4
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Question # 7
Negatively charged atom or grop of atoms is called.
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Proton
Electron
Anion
Cation
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Question # 8
A molecule consists of two or more
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Compounds
Atoms
Formulae
Element
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Question # 9
An atm with stable elecrronic configuration can exist.
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Reacts readily
Can not exist
Independently
Combined form
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Question # 10
Outermost shell of sodium atom has ...... electrons.
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1
2
3
4
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Question # 11
Positively charged atom or grouping of atoms is called.
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Anion
Cation
Neutron
Proton
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Question # 12
Chemical bond is O2 is.
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Ionic
Covalent
Metalic
None of these
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