Question # 1

Which substance is used for denaturing of ethanol

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Methanol

Acetone

Pyridine

All

Which enzyme is not involved in fermentation of starch.

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Diastase

Zymase

Urease

Invertase

Which one the following a dihydric alcohol

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Ethanol

Cyclo hexanol

Glycerol

Glycol

Rectified spirit contains alcohol about

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80%

85%

90%

95%

The conversion of ethene to ethanol is an example of.

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Hydration

Dehydration

Neutralization

Esterification

Phenol is the derivative of

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Alkane

Aromatic hydrocarbon

Aliphatic hydrocarbon

Alkene

Which substance is used to convert ethanol to ethyl chloride

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SOCl2

PCl3

PCl5

All of these

Which condition are not suitable for the growth of enzymes.

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Temperature between 25 ^oC to 37 ^oC

Solution must be dilute

Environment must be aerated

Some preservative should be present in solution

Which compound is more soluble in water

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C₂H₅OH

C₆H₅OH

CH₃COCH₃

n - hexanol

Alcohol obtained by fermentation is only upto

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10%

12%

20%

95%

The conversion of ethanol to ethene is an example of.

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Dehydration

Hydration

Hydrogenation

Fermentation

Phenol on heating with concentrated nitric acid forms

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o-nitrophenol

T.N.T

Na2CO3

Cyclohexanol

Isopropyl alcohol on oxidation gives

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Acetaldehyde

Acetone

Ether

Propene

Primary, Secondary and tertiary alcohols can be distinguish by.

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Iodoform test

Lucas test

Fehling solution

Ammoniacal silver nitrates

Absolute alcohol is that which is

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100%

95%

Ethanol mixed with methanol

Ethanol mixed with H2O

Methyl alcohol is not used

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As a solvent

As an anti freezing agent

As a substitute for petrol

For denaturing of ethyl alcohol

Which compound will have maximum repulsion with H2O

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C6H6

C2H5OH

CH2CH2CH2OH

CH5-O-OH3

Which substance shows very weak hydrogen bonding with water.

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Methanol

Ethanol

Diethyl ether

Benzene

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