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NAT I Engineering Chemistry MCQs With Answers

Question # 1

The essential component of organic compound is

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Question # 2

Isopropyl alcohol on oxidation forms

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Acetone

Ether

Ethylene

Acetaldehyde

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Question # 3

In a crystal a ≠ b ≠ c, a = γ = 90° and β ≠ 90°, it is

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Monoclinic

Rhombic

Trigonal

Tetragonal

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Question # 4

Vitamin A is present in

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Liver

Milk

Green vegetables

All

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Question # 5

One mole of a 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 liters of a gas at S.T.P.

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Question # 6

A solution of sodium sulphate was electrolysed using some inert electrodes.The products at the electrodes are

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O₂, H₂

O₂, Na

O₂, SO₂

O₂, S₂O²-₈

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Question # 7

How many moles of Helium gas occupy 22.4 L at 0^oC at 1 atm.Pressure?

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0.11

0.90

1.0

1.11

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Question # 8

The number of electrons in the M shell of the element with number 24 is

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Question # 9

Which of the following value of ΔHf° represent that the product is least stable?

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-94.0 kcal mol^-1

-231.6 kcal mol^-1

+21.4 kcal mol^-1

+64.8 kcal mol^-1

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Question # 10

Which of the following has linear shape?

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SP²

SP³

None of the above

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Question # 11

Which of the following has greatest reducing power?

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Hbr

HCI

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