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NAT I Engineering Chemistry MCQs With Answers

Question # 1

Which of the following fluorides of xenon in impossible?

Choose an answer

XeF₂

XeF₃

XeF₄

XeF₆

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Question # 2

Potassium is kept in

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Water

Ammonia

alcohol

Kerosene

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Question # 3

The total number of protons in 10 g of calcium carbonate is (N_o = 6.023 x 10²³)

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1.5057 x 10²⁴

2.0478 x 10²⁴

3.0115 x 10²⁴

4.0956 x 10²⁴

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Question # 4

Which of the following statement is correct if the intermolecular forces in liquids A, B and C are in the order A < B < C?

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B evaporates more readily than A

B evaporates less readily than C

A and B evaporates at the same rate

A evaporates more readily than C

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Question # 5

Which of the following with aqueous KOH will give acetaldehyde?

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1,2-Dichloroethane

1, 1-Dichloroethane

Chloroacetic acid

Ethyl chloride

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Question # 6

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 # 7

Which of the following is a molecular disease?

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Allergy

Cancer

German measles

Sickle cell anemia

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Question # 8

Number of elements presents in the fifth period of periodic table is

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Question # 9

The maximum number of electrons in a subshell for which / = 3 is

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Question # 10

Vitamin A is present in

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Liver

Milk

Green vegetables

All

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Question # 11

The digestion of fats in the intestines is aided by

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Diffusion

Protection

Peptization

Emulsification

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