Question # 1

Which of the following is directly related to Qualitative analysis?

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Identification

Separation

Measurement

Calculation

Which one of the halogen acid is a liquid?

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HF

HCI

HBr

HI

Maximum number of active hydrogens are present in

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Acetic-acid

Glycerol

Methane

Methanol

Dehydration of glycerol give

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Propane

Propene

Acrolein

Benzene

Water (H2O) is liquid while hydrogen sulphide (H₂S) is a gas because

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Water has higher molecular weight

Hydrogen sulphide is a weak acid

Sulphur has high electronegativity than oxygen

Water molecules associate through hydrogen bonding.

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

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/

n

m

s

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

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Monoclinic

Rhombic

Trigonal

Tetragonal

The main structure features of proteins is

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An ester linkage

An ether linkage

The peptide linkage

All

Cheif air pollutant which is likely to deplete ozone layer

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Sulphure dioxide

Carbon dioxide

Nitrogen oxides and chloro fluorocarbons

How many kinds of space lattices are possible in a crystal?

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23

7

230

14

Leblanc process is employed in the manufacture of

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Baking soda

Washing soda

Potash

Plaster of paris

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