Question # 1

_________ is an example of substance.

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Carbon

Hydrogrn

Oxygen

Water

Electron _____________ energy when thy jump from higher to lower level.

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Absorb

Radiate

Nothing

Nil

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

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Carbon monoxide

Oxygen

Nitrogen

Argon

_________ can be separated by physical means.

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Mixture

Compound

Solution

Nil

It is a triatomic molecule

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Sodium chloride

Water

Chalk

Glucose

Which one is largest?

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Exo

Peta

Atto

Pico

Neutrons have _________ charge.

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+

_

No

Nil

Sort out a compound from the following

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Air

Salt

Ice-cream

Iron

The fundamental unit of elements is ___________

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Molecule

Atom

Matter

Mixture

The atomic number is represented by ____________

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A

Y

X

Z

One mole of sodium = ______ .

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24 g

25 g

26 g

23 g

Protons carry _________ charge.

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+

_

No

Neutral

Industrial chemistry deals with the manufacturing of compounds:

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in the laboratory

on micro scale

on commercial scale

on economic scale

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

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