Question # 1

Which one is the property of an ideal solvent

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Should be expensive

It should react chemically with the solute

Impurities should crystallize along with the solute

Should be safe to use

Which of the following is a molecular disease?

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Allergy

Cancer

German measles

Sickle cell anemia

Crystal can be classified in to basic crystal habits

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7

4

14

3

Wt. of 112 ml of oxygen at NTP on liquefaction would be

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0.32 g

0.64 g

0.16 g

0.96 g

Addition of iron filling to CuSO₄solution caused precipitation of Cu awing to the

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Reduction of Cu²⁺

Oxidation of Cu²⁺

Reduction of Fe

Reduction of Fe³⁺

Cheif air pollutant which is likely to deplete ozone layer

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Sulphure dioxide

Carbon dioxide

Nitrogen oxides and chloro fluorocarbons

Magnesium keeps on burning in

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N₂

CO₂

N₂O

N₂ as well as CO₂

Ascorbic acid is a chemical name of

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Vitamin D

Vitamin A

Vitamin C

Vitamin B₆

Ethanol containing some methanol is called

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Absolute spirit

Rectified spriit

Power alcohol

Methylated spirit

The main structure features of proteins is

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An ester linkage

An ether linkage

The peptide linkage

All

All the naturally occurring processes proceed spontaneously in a direction which lead to

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Decrease of entropy

Increase of enthalpy

Increase of free energy

Decrease of free energy

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