Question # 1

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

When Bronsted and Lowry put forward acid base concept?

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1913

1923

1933

1943

Nucleic acids made up of long chain of.

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Nucleotide

Fatty acids

Amino acid

None of them

75% atmosphere mass lies in how many kilometers.

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11 km

30 km

50 km

85 km

Which of the following is the hardest coal?

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Pear

Lignite

Bituminous

Anthracite

Which is a hereditary material?

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DNA

RNA

Protein

All of them

Which gas in produced during ripening of bnabanas.

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Methane

Ethene

Acetylene

Carbon dioxide

Carbohydrates are synthesized by plants through.

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Respiration

Photosynthesis

Dehydrateion

Evaporation

Which is simplest alkane?

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CH₄

C₂H₈

C₂H₂

C₂H₄

Equilibrium constant has no unit when number of moles of reactants and products are:

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same

Different

Both a and b

None of these

How many % age of urea is used as fertilizers?

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80%

90%

95%

98%

If Qc < Kc the reaction goes in:

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Forward

Reverse

At equilibrium state

None

Carbon black is used in the manufacture of.

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Dry cleaning

Shoe polishes.

Fertilizer

None of these

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