Question # 1

The process by which water rises up from the roots of plants to leaves is called.

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Photosynthesis

Respiration

Surface tension

Capillary action

Which of the following in soluble in water.

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Organic acids

Glucose

Alcohal

All of them

Which compound protect teeth from diseases?

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Fluorine compound

Chlorine compound

Iodine compound

Bromine compound

Concentration is a .

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Mixing technique

Separating technique

Boiling technique

cooling technique

pH of acid rain is:

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7-5

6-7

1-2

4-5

Which chemical is called king of chemicals?

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KNO₃

H₂SO₄

HCl

NHO₃

General formula of Alkynes is.

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C₆H_2n-2

C_nH_2n+2

C₁₁H_2n-2

C_nH_2n-2

Molecular formula of butane is

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C₄H₈

C₄H₁₀

C₄H₁₂

C₄H₆

The water of crystallization is responsible for the.

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Melting points of crystals

Boiling points of crystals

Shapes of crystals

Transition point of crystals

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

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Lead

Chromium

Aluminium

Mercury

The most important disaccharide is .

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Sucrose

Glucose

Cellulose

None of them

The envelope of different gases around the earth is called.

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Atmosphere

Brosphere

Lithosphere

Hydrosphere

Which gas is emitted due to volcanic eruption?

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CO₂

SO₃

NO₂

H₂

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