Question # 1

The substances formed during the chemical reaction are called.

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Product

Reactants

Radicals

Element

At equilibrium state there are possibilities: OR types of chemical equilibrium are.

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1

2

3

4

An equilibrium is achievable only in a:

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big system

small system

open system

closed system

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.

Such reationsin which reactants and products are sufficient in quantities the Kc value of equilibrium state will be

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Very small

Very large

Moderate

None of these

The unit of molar concentration:

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mol. dm^-2

mol. dm^-1

mol. dm

mol. dm^-3

Guldberg and waage put forward law of mass action in:

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1860

1869

1870

1879

What is the colour of hydrogen iodide in product?

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Purple

Yellow

Blue

Colorless

Equilibrium constant has no unit when number of moles of reactants and products are:

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same

Different

Both a and b

None of these

In a Reversible Reaction if Qc = Kc then.

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Reaction is occuring in forward direction

Reaction is occuring in Reverse direction

Equilibrium has been allained

Reaction is not at equilibrium

The forward reaction takes place:

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Right to left

Left to Right

Only to right

Only to left

The color of hydrogen Iodide is:

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Colourless

Black

Red

Pink

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

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