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NAT I Engineering Chemistry MCQs With Answers

Question # 1

The main structure features of proteins is

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An ester linkage

An ether linkage

The peptide linkage

All

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Question # 2

The IUPAC name of the compound having the formula (CH3) 3 C - CH = CH2 is

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1, 1 -Dimethyl-3-butene

1,1,1-Trimethyl-3-propene

3,3,-Dimethyl-1-butene

3,3,3-Trimethyl-1-propene

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Question # 3

Isopropyl alcohol on oxidation forms

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Acetone

Ether

Ethylene

Acetaldehyde

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Question # 4

The number of oxygen atoms in 4.4 g of CO₂ is approximately

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1.2 x 10²³

6 x 10²²

6 x 10²³

12 x 10²³

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Question # 5

Which of the following geometry is associated with the compound in which the central atom assumes sp³ d hybridization?

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Planar

Pyramidal

Angular

Trigonal bipyramidal

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Question # 6

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

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Question # 7

A clathrate may be defined as a

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Cage compound

Liquid crystal

Mixture

Solid solution

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Question # 8

Variable valency is generally exhibited by

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Normal elements

Transition elements

Metallic elements

None of these

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Question # 9

Reaction of ethylamine with chloroform in alcoholic KOH producers

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CH₃OH

CH₃NC

C₂H₅NC

C₂H₅CN

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Question # 10

What quantity of limestone (CaCO₃) on heating will give 56 kg of CaO?

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1000 kg

56 kg

44 kg

100kg

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Question # 11

Which quantum number is sufficient to describe the electron is hydrogen atom?

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