Question # 1

Effects of ozone depletion are following except the one.

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Increases infectious diseases

Increases crops production

Can cause skin cancer

Can cause climatic changes.

Which are called paraffines?

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Alkyle

Alkynes

Alkenes

Alkanes

Cause of Night blindness is.

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Deficiency of vitamin B

Deficiency of vitamin A

Deficiency of vitamin D

Deficiency of vitamin E

Which one is not the fraction of residual oil?

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Paraffin wax

Asphalt

Fuel oil

Coke

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

A conjugate base is a specie formed by donating a.

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Proton

Electron pair

Neutron

Electron

The most important disaccharide is .

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Sucrose

Glucose

Cellulose

None of them

Dehalogenation of tetrahalides produces acetylene. This reaction takes place in the presence of

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Sodium metal

Zinc metal

Magnesium metal

Potassium metal

Hydrogen atoms preset in pentane are.

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10

12

14

16

The heat capacity of water is greater than rocks.

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4 times

5 times

6 times

7 times

Which acid is found in Ant sting?

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Citric Acid

Formic Acid

Uric Acid

Sulphuric acid

A strange bitter smell noticed near photo copier machine is of.

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H₂S

SO₂

O₂

O₃

The depletion of which gas results in the death of aquatic life.

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Oxygen

Carbon di oxide

Boath of them

Nome of them

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