Question # 1

If Qc = Kc the reaction goes in:

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Forward

Reverse

At equilibrium state

None

A reverse reaction is that.

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Which proceed from left to high

In which reactants reacts to form products

Which slow down gradually

Which speed up gradually

Which chemical is called king of chemicals?

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KNO₃

H₂SO₄

HCl

NHO₃

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

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equilibrium constant

dynamic equilibrium

static equilibrium

simple equilibrium

In the beginning the rate of reverse reaction is

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Negligible

Moderate

Very fast

Slow

Which gas is used to prepare ammonia?

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N₂

O₂

Cl₂

S

The characteristics of reversible reactions are the following except:

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Products never recombine to form reactants.

They never complete

The proced in both ways

They have a double arrow between reactants and products.

The reaction goes from left to right , if:

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Qc = Kc

Qc > kc

Qc<Kc

Qc = 0

The lives of aquatic plants and animals are indirectly related to concentration of dissolved ------ in water:

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hydrogen

oxygen

chlorine

nitrogen

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

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