Question # 1

When an electronegative element combines with electrpositive element, the type of bonding. is.

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Covalent

Polar Covalent

Ionic

Coorinae Covalent

Which molecule contains a single vovalent bond.

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CH4

C2H4

C2H2

O2

Which of the following is an exampel of polar covalent compound.

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Cl2

H2

O2

HCl

Which metal has the lowest melting point?

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Li

Na

Rb

K

The electropositive elements have the tendency to

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Lose electrons

Gain electrons

Share electrons

All of these

Which of the following bond s is expected to b the weakest.

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Cl-Cl^-

C-C

F-F

O -O

When molten copper and olten zinc are mixed together , they give rise to a new substnce called brass. Predict what type of bond is formed between copper and zinc.

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Ionic bond

Coordinate Covalent bond

Metallic bond

Covalent Bond

Triple covalent bond involves how many electrons.

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Six

Four

Eight

Three

Covalent Bond involves the

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Sharing of electrons

Repulsion of electrons

Acceptance of electrons

Donation of electrons

Whcih compound contains both covalent and ionic bonds.

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MgCl₂

PCl5

NH₄Cl

CaO

Which form of carbon is used as a lubricant?

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Coal

Diamond

Charcoal

Graphite

How many covalent bonds does C₂H₂ molecule have.

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Two

Three

Four

Five

Malleability is the property by virtue of which a metal can be drawn into.

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Rods

Plates

Sheets

Wires

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Chemistry 9th Class English Medium Unit 3 Online Test MCQs With Answers

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