Question # 1

One carbon is _________ times heavier than hydrogen.

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12

13

14

15

____________ Metals are electronegative in nature.

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Pure-

Noble-

Non-

Nil

The period of Alchemists extends from _________ AD.

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800 to 1800

600 to 1600

900 to 1900

700 to 1700

The symbol of barium is:

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Ba

Bi

Br

B

_____________ revolves in orbits around nucleus.

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Electron

Proton

Neutrons

Nil

Polyatomic molecules consist of _________ atoms.

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1

More than 1

Less than 1

2

biology bis classified as ___________ science.

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Engineering

Physical

Natural

Chemical

H2O is what type of molecules it is:

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Manoatomic

Polyatomic

Pentaatomic

Nil

The fundamental unit of elements is ___________

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Molecule

Atom

Matter

Mixture

The symbol of lead us

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As

Pb

Sb

Na

Number of protons+ neutrons is :

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Atomic mass

Mass numbers

Both

Nil

___________ is a pure substance that can be broken down.

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Matter

Element

Mass

Mixture

An ion is a charged particles:

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True

False

In some conditions

Never

The third abundant as found in the earth' crust is:

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Carbon monoxide

Oxygen

Nitrogen

Argon

The quantity of a matter in a body is called ____________

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Mass

Weight

Atom

Molecule

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Chemistry 9th Class English Medium Unit 1 Online Test MCQs With Answers

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