Question # 1

An equilibrium is achievable only in a:

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big system

small system

open system

closed system

The dynamic equilibrium in irreversible reaction.

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Never establishes

Establishes after completion of reaction

Establishes before completion of reaction

Establishes very soon

What is the colour of hydrogen iodide in product?

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Purple

Yellow

Blue

Colorless

We exhale gas in the atmosphere during respiration.

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Carbon dioxide

Oxygen

Nitrogen

Water

The reaction will attain the equilibrium if:

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Qc<Kc

Qc > Kc

Qc = Kc

Qc = 0

The unit of molar concentration is:

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moldm^-3

moldm⁺³

molcm^-3

molcm⁺³

The major components of Atmosphere are:

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Carbon and Nitrogen

Nitrogen and Oxygen

Oxygen and Chlorine

None of these

In irreversible reaction, dynamic equilibrium:

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Never establishes

Establishes before the completion of reaction

Establishes after the completion of reaction

Establishes readily

When CaCO_3,.is heated in an open flask, it decomposes to form calcium oxides and .

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O₂

CO

CO₂

CO₃

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

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N₂

O₂

Cl₂

S

The color of hydrogen Iodide is:

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Colourless

Black

Red

Pink

If Qc > Kc the reaction will be in

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Chemical equilibrium

Static equilibrium

Reverse reaction

Forward reaction

If Qc < Kc the reaction goes in:

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Forward

Reverse

At equilibrium state

None

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10th Class Chemistry Chapter 9 Chemical Equilibrium English Medium KPK Boards Online Mcqs MCQs With Answers

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