Question # 1

________________ orbital is more complex in shape.

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s

p

f

d

The number of isotopes of carbon are

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1

2

3

5

Atoms of elements combine chemically to form:

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Mixtures

compounds

solutions

ions

L shell can accommodate ________________ electrons.

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2

8

18

32

________________ proposed that matter is composed of small particles.

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Greek

English's

Russian

Nil

The lowest energy level is

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K

L

M

N

Which of the following can accommodate 18 electrons?

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K

L

M

N

Which one of the following is the most penetrating?

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protons

electrons

neutrons

alpha paticles

Cathode rays are actually

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Electrons

Protons

Neutrons

Photons

___________ is used in treatment of cancer.

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Cobalt-60

C-12

H-3

Nil

The no.of neutrons in deutrium is

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1

2

3

4

The isotopes of an element have different number of

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Electrons

Protons

Neutrons

Protons & Neutrons

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Chemistry 9th Class English Medium Unit 2 Online Test MCQs With Answers

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