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Chemistry 10th Class English Medium Unit 10 Online Test MCQs With Answers

Question # 1

Arrhenius presented his concept about acids and bases in.

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1785

1787

1923

1930

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Question # 2

According to the Lewis concept acid is a substance which can.

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Donate a proton

Donate a pair of electron

Accept a proton

Accept a pair of electron.

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Question # 3

Which acid is used for etching designs on copper plates?

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H₂SO₄

HNO₃

HCl

CH₃COOH

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Question # 4

A reaction between an acid and base produce.

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Salt and water

Salt and gas

Salt and acid

Salt and bases

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Question # 5

In the preparation of insoluble salts, which one of the facts is incorrect?

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Two soluble salts are mixed

Two in soluble salts are mixed .

One of the salt produced is insoluble

Both of the salts produced are insoluble

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Question # 6

A conjugate acid is a specie formed by accepting a.

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Proton

Electron pair

Neutron

Electron

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Question # 7

A substance which can behave as an acid as well as a base is called.

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Acid

Base

Amphoteric

Neutral

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Question # 8

A base is a substance which neutralizes an acid which of these substances is not a base?

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Aqueous ammonia

Sodium chloride

Sodium Hydroxide

Calcium Hydroxide

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Question # 9

When acids react with metals which gas is evolved?

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H₂

O₂

Cl₂

N₂

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Question # 10

pH of neutral solution is always.

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Question # 11

According to Bronsted and Lowry concept a base is a substance that can accept.

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Proton

Electron pair

Neutron

Electron

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Question # 12

Citric acid is present in

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Citrus fruits

Sour milk

Rancid butter

Apple

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Question # 13

Which salt is used for the manufacture of detergents, pulp and paper?

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NaCl

Na₂CO₃

Na₂SiO₃

NaCl

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