Question # 1

Which one of the following is not the characteristics of monosaccharide?

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White crystalline solids

Soluble in water

Hydrolysable

Reducing is nature

Enzymes are proteins which have the following properties except.

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They catalyze reaction

They are highly non-spcific

They are highly efficient

They are pro

What percentage of nitrogen and oxygen is in the atmosphere.

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69%

79%

9%

89%

The heat capacity of water is.

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4.2 Jg^-1 K^-1

2.1 Jg^-1K^-1

3.2 Jg^-1K^-1

5.9 Jg^-1K^-1

Number of vitamins in vitamin B complex is.

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10

8

6

12

Ammonical brine is prepared by dissolving ammonia gas in.

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NaCl

CaCO₃

CaCl₂

Na₂SO₄

Which types of reaction speed up gradually?

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Irreversible reactions

Reversibel reactions

Forward reactions

Decomposition reactions.

Which one contains triple covalent bond?

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Pentane

Ethylene

Acetylene

All

General formula of alkenes.

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C_n H_2n-2

C_nH_2n

C_nH_2n+2

C_nH_2n-1

About 99% atmosphere's lies within:

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30 kilometre

35 kilometre

15kilometre

11 kilometre

The percentage of water in human body is.

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40%

50%

60%

70%

Which one of the ore of copper?

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Copper glance

Chalcopyrite

Both a and b

None of these

The envelope of different gases around the earth is called.

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Atmosphere

Brosphere

Lithosphere

Hydrosphere

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