Question # 1

Which metal present in acid rain affect the aquatic life by clogging fish gills?

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Lead

Chromium

Aluminium

Mercury

The process which convert vegetable oil into banaspati ghee called.

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Hydrogenation

Halogenation

a and b

None of these

Basic solution have pH value.

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Less than 7

Greater than 7

equal to 7

None of these

Which one of the following diseases severe diarrhea and can be fatal?

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Joundice

Cholera

Dysentery

Typhoid

Dehydrohalogenation takes place in the presence of .

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NaOH aqueous

Alcoholic KOH

Aqeous KOH

Alcoholic NaOH

pH of neutral solution is always.

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6

5

7

10

Active mass is expressed as:

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{ }

[ ]

( )

l l

Conversion of wood into coal is called.

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Carbonization

Destructive distillation

Fractional distillation

All

The major components of Atmosphere are:

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Carbon and Nitrogen

Nitrogen and Oxygen

Oxygen and Chlorine

None of these

One of the hydrocarbons reacts with one mole of hydrogen to form a saturated hydrocarbon. What is the formula could be of the x:

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C₃H₈

C₆H₁₂

C₄H₁₀

C₂H₁₆

The lives of aquatic plants and animals are indirectly related to concentration of dissolved ------ in water:

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hydrogen

oxygen

chlorine

nitrogen

The ability of carbon atoms to form chains is called.

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Isomerism

Catenation

Resonance

Condensation

Lavoisier named binary compounds of oxygen acids in .

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1787

1790

1815

1828

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