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NAT I Engineering Chemistry MCQs With Answers

Question # 1

Ionic solids with defects contain

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Equal number of cation and anion vacancies

Interstitial anions and anion vacancies

Cation vacancies only

Cation vacancies and interstitial cations

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Question # 2

Which of the following reagent cannot be used for preparing alkyl chloride from alcohol?

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HCI + anhyd. ZnCI₂

NaCI

PCI₅

SOCI₂

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Question # 3

In which molecule carbon atom is sp² hybridized

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CH₄

C₂H₄

C₂H₂

None of the above

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Question # 4

Which has maximum protein content?

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Ground nut

Cow milk

Egg

Wheat

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Question # 5

Which species represents the electrophile in aromatic nitrotaion?

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NO^-₂

NO₂

NO2

NO^-₃

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Question # 6

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

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Question # 7

Maximum number of active hydrogens are present in

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Acetic-acid

Glycerol

Methane

Methanol

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Question # 8

In N.W.F.P the phosphate fertilizer are produced at

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D.I.Khan

Haripur

Nowshera

Dargai

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Question # 9

A certain liberate 0.5 g of hydrogen in 2 h. How many grams of copper can be liberated by the same current flowing for the same time in a copper sulphare solution?

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12.7 gm

15.9 gm

31.8 gm

63.5 gm

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Question # 10

The ratio of the ionization energy of H and Be³⁺ is

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1 : 1

1 : 3

1 : 9

1 : 16

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Question # 11

The order of reactivity of halogens in aliphatic substitution reactions is

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Br2 > CI2 > F2

CI2 > Br2 > F2

CI2 CI2 > Br2

F2 > Br2 > CI2

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