Question # 1

Lewis acid-base concept have the following characteristics except:

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formation of an adduct

Formation of a co-ordinate covalent bound

Donation and acceptance of an electron pair

Donation and acceptance of a proton

Carbonization process is the conversion of

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Coal into coal gas

Coal into wood

Wood into coal

Wood into coal tar

Incomplete combustion of alkanes produce.

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Carbon dixoide only

Carbon monoxide only

Carbon monoxide carbon black and water

Carbon dioxide and carbon black

According to Lewis concept a base is a substance which can donate.

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Proton

Electron pair

Neutron

Electron

Froth flotation process is used to concentrate the ore on:

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Density basis

Concentration basis

Wetting basis

Magnetic basis

The reaction in which the number of moles reactants and products not equal in balance chemical equation the units of Kc for this reactions are

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mol^-2

dm³

mol²

mol dm^-1

Coal is blackish complex mixture of compounds of

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Carbon

Hydrogen

oxygen

All

Which one of the following statements about glucose and sucrose is incorrect.

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Soluble in water

Naturally occuring.

Carbohydrates

Disaccharides

Which of the following is a secondary pollutant.

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CO₂

CO

SO₃

HF

The ability of carbon atoms to form chains is called.

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Isomerism

Catenation

Resonance

Condensation

General formula of Alkynes is.

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C₆H_2n-2

C_nH_2n+2

C₁₁H_2n-2

C_nH_2n-2

What is pOH of 0.01 M solution of HCl?

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1

4

12

13

Amino acid are linked to each other through.

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Hydrogen link

Ionic link

Gelatin link

Peptide link

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