Question # 1

Considering the electronic configuration of atoms which atom with the given atomic number will be the most stable one?

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6

8

10

12

The molar mass of H₂SO₄ is:

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98 g

98 amu

9.8 g

9.8 amu

Which has biger particles?

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Solutions

Colloids

Suspensions

True solutions

Which one is not a property of electrolytic cell?

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It consists of one complete cell

Anode has +ve charge

It converts electrical energy into chemical one

Anode has -ve charge

___________ is a pure substance that can be broken down.

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Matter

Element

Mass

Mixture

H° - H° has ________________ energy.

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Lower

Higher

Medium

Nil

Br2 + H2S __ 2HBr + S, which one is oxidizing agent:

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H2S

Br2

S

2HBr

How many number of electrons take part in triple covalent bond?

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2

4

6

8

____________ agents gains electrons in chemical reaction.

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Reduction

Oxidation

Both

None of these

An ion is a charged particles:

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True

False

In some conditions

Never

The symbol of barium is:

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Ba

Bi

Br

B

The SI unit of pressure is:

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N

N/m²

Pascal

atm

The atomic number is represented by ____________

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A

Y

X

Z

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9th Class Chemistry English Medium KPK Boards Online Mcqs MCQs With Answers

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