Question # 1

Oxidation of alkenes produce.

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Glyoxal

Glycol

Oxalic acid

Formic acid

Pitch is black residue of.

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Coke

Coal tar

Coal

Coal gas

Dynamic means, reaction is:

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In forward direction

Stop

In reverse direction

Still continuing.

At which region all weather occurs?

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Troposphere

Stratosphere

Mesosphere

Thermosphere

What percentage of nitrogen and oxygen is in the atmosphere.

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69%

79%

9%

89%

The branch of chemistry which deals with the study of hydrocarbons and their derivatives is known as.

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Organic chemistry

Inorganic chemistry

Biochemistry

Nuclear chemistry

Incinerator reduces solid waste into .

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Ash

Flue gas

Heat

All of them

Mg²⁺ and Ca²⁺ ions react with soap to form calcium and magnesium salts of fatty acids called.

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Gelatin

Scum

Paste

None of them

The process of removal of gangue form the ore is technically known as:

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concentration

purification process

metallurgy

refining

Synthesis of protein is directed by.

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DNA

RNA

Both of them

None of them

Vibrious cholera bacteria causes the disease

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Cholera

Diarrhea

Jaundice

Hepatitis

Concentration of the copper ore is carried out by:

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Calcinations

Roasting

Forth flotation

Distillation

All bases turn red litmus

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Red

Blue

Pink

White

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