Question # 1

Dissolution in water is due to ____________ bonding.

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Ionic

Covalent

Hydrogen

Nil

Which molecule has single covalent bond?

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O₂

N₂

CI₂

CO₂

In 9th century scientist accepted by:

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Dalton

Bohars

Rutherford

Nil

D-block consists of:

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4th,5th & 6th periods

2nd, 3rd & 4th periods

1st, 2nd, & 3rd periods

________________ is the shortest period.

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6th

8th

2nd

1st

Metals are ________________

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Liquid

Solid

Gas

Malleable

A heterogeneous mixture of different substance are called:

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Solution

Suspension

Colloids

Nil

Smoke in air is the example of solution.

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Gas in Gas

Gas in liquid

liquid in Gas

Solid in Gas

____________ is an irreversible cell.

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Dry cell

Chargeable cell

Zn cell

None of these

Mark the incorrect statement about ionization energy:

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it is measured in Kjmol^-1

it is absorption of energy

it decreases in period

it decreases in a group

The example of solid solute in gas solvent is

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butter

Sugar in water

Smoke in air

Opals

In the redox reaction between zn and HCI. the oxidizing agent is:

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zn

H⁺

C

H²

Formation of water form hydrogen and oxygen is:

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Redox reaction

Acid-base reaction

Neutralization

Decomposition

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

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