Question # 1

The pore size of filter paper depends upon

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Nature of the medium

Temperature of the medium

Size of particles

Mass of the particles

The credit of discovering neutron goes to

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Rutherford

Langmuir

Chadwick

Austen

During the folding of filter paper the apex form angle of about

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80°

60°

180°

90°

Calcium acetate when dry distilled

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Formaldehyde

Acetaldehyde

Acetone

Acetic anhydride

Leblanc process is employed in the manufacture of

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Baking soda

Washing soda

Potash

Plaster of paris

Which of the following belongs to the halogen family?

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Francium

Polonium

Radium

Astatine

Which of the following is a colligative property?

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Melting point

Osmotic pressure

Freezing point

Sublimation temperature

When sulphur is boiled with Na₂SO₃solution, the compound formed is

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sodium sulphides

Sodiums sulphates

Sodium persulphate

Sodium thiosulphate

Which of the following elements is most electronegative?

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Oxygen

Chlorine

Nitrogen

Fuorine

1 mole of CH₄contains

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6.02 x 10²³atoms of H

4 g-atom of hydrogen

1.81 x 10²³molecules of CH₄

3.0 g of carbon

Which of the following alcohols cannot be produced by treatment of aldehydes or ketones with NaBH₄or LiAIH₄?

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1-Propanol

2-Propanol

2-Methyl-2-propanol

Ethanol

The formula of nitre is

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KNO₃

NANO₂

NaCl

Na₂CO₃

Which of the following halogens does not form its oxyacids?

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F

Cl

Br

I

Wholer prepared urea from

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Ammonia

NH₄CNO

NH₃

Uric acid

Which reaction sequence would be best to prepare 3-chloro-aniline from benzene?

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Chlorination, nitration, reduction

Nitration, Chlorination, reduction

Nitration, reduction, chlorination

Nitration, reduction, acylation, chorination, hydrolysis

One mole of gas refers to

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The number of molecules in one litre of gas

The number of molecules in one gram of gas

The number of molecules contained in 12 grams of ¹²C isotope

The number of molecules in 22.4 litres of a gas at S.T.P.

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NAT II Physical Science Chemistry MCQs With Answers

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