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Chemistry 10th Class English Medium Online Test MCQs With Answers

Question # 1

Which is used to remove the grease stains from clothes?

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NaOH

KOH

Al(OH)₃

NH₄OH

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Question # 2

Monosaccharides consist of:

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2 to 6 carbon atoms

3 to 9 carbon atoms

4 to 10 carbon atoms

10 to 15 carbon atoms

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Question # 3

pH of acid rain is:

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7-5

6-7

1-2

4-5

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Question # 4

One of the hydrocarbons reacts with one mole of hydrogen to form a saturated hydrocarbon. What is the formula could be of the x:

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C₃H₈

C₆H₁₂

C₄H₁₀

C₂H₁₆

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Question # 5

Permanent hardness can be removed by using .

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Soda lime

Sodium Zeolite

Quick lime

Lime water

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Question # 6

Reaction which have comparable amount of reactants and products at equilibrium state have.

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Very small Kc value

Very large Kc value

Moderate Kc value

None of these

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Question # 7

In forth flotation process the ore particles are preferentially wetted by:

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water

oil

benzene

petrole

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Question # 8

Concentration is a separating technique in which mineral is separated from.

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Gangue

Silicates

Aluminates

All

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Question # 9

Some organic compound are soluble in water due to the presence of .

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-OH

H⁺

Botha a and b

Covalent bond

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Question # 10

Methyl butanoate smell like.

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Apple

Mange

Lemon

Grapes

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Question # 11

At which region all weather occurs?

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Troposphere

Stratosphere

Mesosphere

Thermosphere

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Question # 12

Which diseases cause by the deficiency of vitamin E?

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Rickets

Anemia in babies

Scurvy

Night blindness

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Question # 13

About 99% atmosphere's lies within:

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30 kilometre

35 kilometre

15kilometre

11 kilometre

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