Question # 1

Which of the following does not reflect the periodicity of elements?

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Bonding behaviour

Electronegativity

Ionisation potential

Neutron/proton ratio.

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

Acetic anhydride is obtained form acetyl chloride by the reaction of

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P₂O₅

H₂SO₄

CH₃COONa

CH₃COCH₃

Vitamin A is present in

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Liver

Milk

Green vegetables

All

Which of the following imparts violet colouration to the non-luiminous flame of Bunsen burner?

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NaCI

BaCI₂

CaCI₂

KCI

SO₂ and NO₂ pollution by increasing

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Alkalinity

Acidity

Neutrality

Buffer action

1 mole of CH₄ contains

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6.02 x 10²³ atoms of H

4 g-atom of hydrogen

1.81 x 1023 molecules of CH₄

3.0 g of carbon

Which of the following is an example of body centred cube?

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Magnesium

Zinc

Copper

Sodium

Heating a micture of sodium benzoate and soda lime gives

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Benzene

Methane

Sodium benzoate

Calcium benzoate

Crystal can be classified in to basic crystal habits

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7

4

14

3

The structure of XeF₆

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Distorted octahedral

Pyramidal

Tetrahedral

None of the above

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NAT I Engineering Chemistry MCQs With Answers

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