Question # 1

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

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N₂

O₂

Cl₂

S

The rate of reverse reaction in the beginning.

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Slow

moderate

Very fast

Low

Which colour of HI is ?

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Orange

Purple

Red

Colourless

If Qc < Kc the reaction goes in:

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Forward

Reverse

At equilibrium state

None

An equilibrium is achievable only in a:

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big system

small system

open system

closed system

Guldberg and waage out forward law of mass action in:

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1889

1879

1869

1859

For a reaction between PCL₃ and Cl₂ to form PCl₅ the units of Kc are:

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Mol dm^-3

Mol^-1 dm^-3

Mol^-1dm³

Mol dm³

If Qc > Kc the reaction will be in

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Chemical equilibrium

Static equilibrium

Reverse reaction

Forward reaction

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

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

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equilibrium constant

dynamic equilibrium

static equilibrium

simple equilibrium

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

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80

90

95

99

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.

The unit of molar concentration is:

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moldm^-3

moldm⁺³

molcm^-3

molcm⁺³

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