Question # 1

_________ can be separated by physical means.

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Mixture

Compound

Solution

Nil

The study of hydrocarbons and their derived compounds is called

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Physical chemistry

Inorganic chemistry

Organic chemistry

Biochemistry

105 elements were discovered by the year ________________

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1984

1974

1086

1996

Mass no is represented by :

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A

B

C

D

The fundamental unit of elements is ___________

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Molecule

Atom

Matter

Mixture

The branch of chemistry which deals with qualitative & quantitative analysis of matter is :

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Analytical

Nuclear

Biochemistry

Organic

How many numbers of moles are equivalent to 8 grams of CO₂?

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0.15

0.18

0.21

0.24

Elements are represented by chemical _________

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Abbreviation

Unit

Symbols

It can be represented

The atomic number is represented by ____________

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A

Y

X

Z

Neutrons have _________ charge.

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+

_

No

Nil

One mole of sodium = ______ .

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24 g

25 g

26 g

23 g

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

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Absorb

Radiate

Nothing

Nil

The smallest under of an ionic compound is

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Atom

Formula unit

Ion

Molecule

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

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