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Chemistry 10th Class English Medium Online Test MCQs With Answers

Question # 1

Alkanes give reaction only

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Addition

Decomposition

Substitution

Displacement

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Question # 2

The number of carbon atoms present in petroleum ether.

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1-5

2-5

3-7

5-7

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Question # 3

Urea is nitrogenous fertilizer. It consist of nitrogen.

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26.6 %

36.6%

46.6%

56.6%

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Question # 4

Which help to keep the bowel functioning property

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Dietary fiber

Vitamins

Lipids

Carbohydrates

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Question # 5

Blonde hair contains compound of.

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Iron

Copper

titanium

Molybdenum

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Question # 6

A hydrocarbon has molecular formula C₈H₁₄. What is the molecular formula of the next number of the same homologous series.

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C₉H₁₈

C₉H₁₆

C₉H₂₀

C₉H₁₂

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Question # 7

Permanent hardness is removed by adding.

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Na₂ zeolite.

Soda lime

Lime water

Quick lime

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Question # 8

General formula of Alkynes is.

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C₆H_2n-2

C_nH_2n+2

C₁₁H_2n-2

C_nH_2n-2

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Question # 9

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 # 10

For which reaction Kf is the rate constant?

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Forward reaction

Backward reaction

Upward reaction

Downward reaction

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Question # 11

Amont the followign substitution reaction is characteristics of.

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Alkanes

Alkenes

Alkynes

None of these

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Question # 12

The reactions in which products can recombine to form reactants is called.

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Irreversible reactions

Reversible reactions

Direct reactions

Indirect reactions

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Question # 13

Natural gas is 85% methane, It is used to make the follwing except.

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Carbon black

Ethane

Propane

Both b and c

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