Question # 1

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.

Specific Heat capacity of water is about.

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4.0 Jg^-1 K^-1

4.1 Jg^-1K^-1

4.2 Jg^-1K^-1

4.3 Jg^-1K^-1

Ozone is beneficial for us as it

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Absorb infrared radiation.

Absorb Ultraviolet radiations.

Absorb Chlorofluorocarbons

Absorb Air pollulant

Which gas creates suffocation and causes death?

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CO

CO₂

SO₃

SO₂

Coal gas is mixture of

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CO and CH₄

CO . CH₄. CO₂

CO, CH₄, H₂

CO, H₂ and CO₂

Imperial chemical industries was established in.

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1942

1944

1950

1990

Which helps in lowering of cholesterol level?

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Vitamin

Fiber

Carbohydratres

All of them

Who put forward the vital force theory?

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Berzelius

Wohler

Dalton

Lavoisier

Brown hair contains.

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Iron compound

Copper compound

titanium compound

Both a and b

The percentage of potable water on earth is.

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2%

0.2%

0.02%

0.002%

Ethylene is present is natural gas sometimes to the extent of .

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10%

20%

30%

40%

Ozone depletion was first noticed is.

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1970's

1980's

1990's

1960's

Law of Mass Action was put forward by:

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G.N.Lewis

Lowry

Arrhenius

Gulbderg and Waage

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