Question # 1

Halogenation of alkanes in the presence of diffused sunlight takes place.

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Suddenly, only in one step

Slowly in one step

In a series of step

Fastly in two steps

Blonde hair contains compound of.

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Iron

Copper

titanium

Molybdenum

Which one of the following salts makes the water permanently hard?

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NaCO₃

NaHCO₃

CA(HCO₃)₂

CaSO₄

Which gas in produced during ripening of bnabanas.

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Methane

Ethene

Acetylene

Carbon dioxide

Stearic acid present in

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Apple

Fats

Urine

Grapes

The product of any Lewis acid-base reaction is a single specie called:

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free radical

adduct

molecular ion

conjugate

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

Which is not a character of SO₂

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it is a colourless gas

It has irritating smell

It causes suffocation

It do not form sulphuric acid

Acidic solutions have pH value.

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Less than 7

Greater than 7

equal to 7

None of these

Red hair contains compound of.

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Iron

copper

titanium

Molybdenum

How many times the heat capacity of water is greater than that of rocks.

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Two

Three

Four

Six

Our planet earth consists of ____________ natural Spheres.

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1

4

6

8

Which gas is responsible in warming the atmosphere?

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Nitrogen

Hydrogen

Helium

Fluorine

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