Question # 1

At equilibrium state, when reaction cases to proceed, it is called:

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equilibrium constant

dynamic equilibrium

static equilibrium

simple equilibrium

We exhale gas in the atmosphere during respiration.

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Carbon dioxide

Oxygen

Nitrogen

Water

A complete reaction is one is which.

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All the reactants convert into products.

All the reactants do not convert into products.

Half reactants convert into products.

Only 10% reactants convert into products.

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

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O₂

CO

CO₂

CO₃

Such reaction which can be made proceed in either direction depending upon the condition:

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simple reaction

reversible reaction

irreversible reaction

chain reaction

The major components of Atmosphere are:

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Carbon and Nitrogen

Nitrogen and Oxygen

Oxygen and Chlorine

None of these

When the reaction causes to produced it is called.

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Chemical equlibrium state

Static equilibrium

Dynamic equilibriiun

All

The forward reaction takes place:

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Right to left

Left to Right

Only to right

Only to left

If Qc < Kc the reaction goes in:

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Forward

Reverse

At equilibrium state

None

Such reactions which continue in both directions are called.

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Irreversible

Reversible

Nonreactive

Dynamic

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

The % age of nitrogen and oxygen in our atmosphere is:

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80

90

95

99

The value of equilibrium constant (Kc) depends only on:

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temperature

Pressure

concentration

density

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