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NAT I Engineering Chemistry MCQs With Answers

Question # 1

The weight of 11.2 liters of CO₂ at S.T.P. would be

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88 g

44 g

32 g

22 g

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Question # 2

The heats evolved in combustion of rhombic and monoclinic sulphur are - 70960 and -71030 cal mol^-1 respectively what will be heat of conversion of rhombic sulphur ti monoclinic?

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70960 calories

71030 calories

-70 calories

+70 calories

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Question # 3

Natural fertilizer provides potassium in the form of K₂O (potash)

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1.5 kg

3 kg

4.5 kg

6.5 kg

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Question # 4

Inter molecular forces in solid hydrogen are

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Covalent forces

Van der Waal forces or London dispersion force

Hydrogen bonds

All of these

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Question # 5

Which has maximum protein content?

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Ground nut

Cow milk

Egg

Wheat

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Question # 6

In Friedal-Craft's alkylation besides AICI3 the other reactants are

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C6H6 + NH3

C6H6 + CH4

C6H6 + CH3CI

C6H6 + CH3COCI

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Question # 7

The symbol of the element whose atoms have the outer most electronic configuration 2s² 2p³ is

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Question # 8

Which of the following is a colligative property?

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Melting point

Osmotic pressure

Freezing point

Sublimation temperature

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Question # 9

The number of atoms in 0.0004 g of magnesium is close to

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2 x 10²⁰

10²⁰

6.02 x 10²³

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Question # 10

Which inorganic precipitate acts as semipermeable membrane?

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Calcium sulphate

Barium oxalate

Nickel phosphate

Copper ferrocyanide

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Question # 11

The reference calomel electrode is made from which of the following?

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ZnCI₂

CuSO₄

Hg₂CI₂

HgCI₂

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