Question # 1

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

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80^o

60^o

180^o

90^o

The vapour density of a gas is 11.2 The volume occupied by 11.2 g of this gas at N.T.P is

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22.4 liters

11.2 liters

1 liter

2.24 liters

Natural frertilizer provides phosphorus to plants in the form of P₂O₅

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1.2 kg

2.2 kg

3.2 kg

4 kg

The valence orbital configuration of an element with atomic number 23 is

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3d⁵

3d³, 4s²

3d³,4s¹,4p¹

3d²,4s²,4p¹

Pollutant of automobile exhausts that affects nervous system/produces mental diseases is

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Mercury

Lead

Nitrogen oxide

Sulphur oxide

The equilibrium constant in a reversible chemical reaction at a given temperature

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Depends on the initial concentration of the reactants

Depends on the concentration of one of the products at equilibrium

Does not depend on the initial concentrations of recatants

Is not characteristic of the reaction

Salol is prepared from

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Salicylic acid and phenol

Salicylic acid and methyl alcohol

Both

None

Benzene + Ozone → Y. in this sequence Y is

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Benzene monoozonide

Benzene diozonide

Benzene triozonide

Succinic acid

A current of 9.65 ampere flowing for 10 minutes deposits 3.0 g of the metal which is monovalent the atomic mass of the metal is

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10

50

30

96.5

Leblanc process is employed in the manufacture of

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Baking soda

Washing soda

Potash

Plaster of paris

Which one is the property of an ideal solvent

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Should be expensive

It should react chemically with the solute

Impurities should crystallize along with the solute

Should be safe to use

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NAT I Engineering Chemistry MCQs With Answers

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