Question # 1

The reaction in which the products do not recombine to form reactants are called.

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Inversible reactions

Reversible reaction

Decomposition

Addition

Normally rain water is weakly acidic because of.

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SO₃ gas.

CO₂gas.

SO₂gas.

NO₂gas.

A pollutant is a waste material that pollutes.

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Air

Water

Soil

All of them

The general formula of alkane is

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C_nH_2n+2

C_nH_2n-2

C_nH_2n

C_nH_2n+1

One H₂O molecule can form hydrogen bonding with how many other H₂O molecules?

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One

Two

Three

Four

Acid used for cleaning metals , tanning and in printing industries, is:

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H2SO4

HNO3

CH3COOH

HCI

The surface tension of water is:

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very low

moderate

high

zero

Which hydrocarbon has no effect on an aqueous solution of bromine.

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CH₄

C₁₀H₂₀

C₂H₂

C₂H₄

Which disease cause when humans use water of industrial effuents.

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Cancer

Asthma

Jaundica

Cholera

Law of Mass Action was put forward by:

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G.N.Lewis

Lowry

Arrhenius

Gulbderg and Waage

In shoe polished, which chemical is used.

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Ethanol

Methanol

Carbon black

Formaldehyde

At which region all weather occurs?

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Troposphere

Stratosphere

Mesosphere

Thermosphere

Uric acid is found in

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Urine

Fats

Apple

Grapes

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