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Chemistry 10th Class English Medium Unit 9 Online Test MCQs With Answers

Question # 1

When the numbers of moles of both sides are equal in a reaction, then the unit of K_c will be:

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No unit

mol^-2 dm⁶

mol dm³

mol^-2dm

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Question # 2

The substances formed during the chemical reaction are called.

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Product

Reactants

Radicals

Element

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Question # 3

What is the colour of hydrogen iodide in product?

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Purple

Yellow

Blue

Colorless

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Question # 4

In a chemical reaction, the substance that combine are called.

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Reactant

Products

Mass

Material

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Question # 5

At equilibrium state there are possibilities: OR types of chemical equilibrium are.

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Question # 6

At dynamic equilibrium:

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The reactions stops to proceed

The amounts of reactants and products are equal

The speed of the forward is reverse reactions are equal

The reaction can no longer be reversed

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Question # 7

Which gas is used to manufacture king of chemicals sulphuric acid?

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N₂

O₂

Cl₂

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Question # 8

The substance formed during the chemical reaction are called.

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Products

Reactants

Radical

Element

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Question # 9

Which types of reaction speed up gradually?

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Irreversible reactions

Reversibel reactions

Forward reactions

Decomposition reactions.

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