Question # 1

The major components of Atmosphere are:

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Carbon and Nitrogen

Nitrogen and Oxygen

Oxygen and Chlorine

None of these

Guldberg and waage out forward law of mass action in:

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1889

1879

1869

1859

In the beginning the rate of reverse reaction is

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Negligible

Moderate

Very fast

Slow

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

Which chemical is called king of chemicals?

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KNO₃

H₂SO₄

HCl

NHO₃

When the magnitude of Kc is very small it indicates.

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Equilibrium will never establish

All reactants will be converted to products.

Reaction will go to completion

The amount of products is negligible

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

When the magnitude of Kc is very large it indicates.

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Reaction mixture consist of almost all products.

Reaction mixture consist of almost all reactants.

Reaction has not gone to completion

Reaction mixture has negligible products.

When a system is at equilibrium states?

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The concentration of reactants and products becomes equal

The opposing reactions

The rate of the reverse reaction becomes very low

The rates of the forward and reverse reactions becomes equal.

When the reaction causes to produced it is called.

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Chemical equlibrium state

Static equilibrium

Dynamic equilibriiun

All

The substance formed during the chemical reaction are called.

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Products

Reactants

Radical

Element

If Qc = Kc the reaction goes in:

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Forward

Reverse

At equilibrium state

None

Which types of reaction speed up gradually?

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Irreversible reactions

Reversibel reactions

Forward reactions

Decomposition reactions.

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