Question # 1

The lives of aquatic plants and animals are indirectly related to concentration of dissolved gas in water.

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Nitrogen

Hydrogen

Oxygen

Carbon

White viscous fluid present in an egg is.

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Proten

Fats

Vitamin

Carbohydrates.

Condensed formula of ethane is

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C₃Cl₈

C₂Cl₆

H₃CCH₃

None of these

Which disease is caused by polluted water.

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Cholera

Typhoid

Diarrhea

All of them

Acid occurring in sour milk

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Citric acid

Lactic acid

Bytyric acid

Malic acid

In the bessemerization process.

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Roasted ore is beated.

Molten matte is removed.

Molten matte is heated

Molten matte is added

Percentage of methane present in natural gas is.

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75%

80%

85%

90%

The bond in the product of lewis acid base reaction.

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Ionic

Covalent

Metallic

Coordinate covalent

Which of following is not conjugate base.

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S^-2

F^-1

Na⁺

SO₄

Boiling point of water is:

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0^oC

25^oC

80^oC

100^oC

The general formula of alkynes is

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C_nH_2n

C_nH_2n+2

C_nH_2n-2

C_n H_2n+1

Example of pest is

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Weeds

Herbs

Insect

All of them

Which element protects teeth from decay?

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Potassium

Fluorine

Sodium

Calcium

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