Question # 1

Which bond shows maximum hydrogen bonding with water?

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CH₃OH

C₂H₅OH

CH₃----O----CH₃

C₆H₅OH

Which compound has the maximum repulsion with water?

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C₆H₆

C₂H₅OH

CH₃CH₂CH₂OH

CH₃----O---CH₃

Mild oxidation of glycerol with H₂O₂/FeSO₄gives

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Glyceraldehyde

Dihydroxy acetone

Glycerose

None

General formula of alcohol is:

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ROH

Ar-OH

R-O-R

Ph-OH

Which of the following statements is correct?

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Phenol is less acidic than ethyl alcohol

Phenol is more acidic than ethanol

Phenol is more acidic than carbonic acid

Phenol is more acidic than CH₃COOH

Alcohols are named by replacing 'e' of alkane with:

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al

ene

ol

one

Nitration of phenol gives

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o-nitrophenol

p-nitrophenol

m-nitrophenol

Both o and p-nitrophenol

Treatment of a secondary alcohol with a suitable oxidizing agent (K₂Cr₂O₇) results in the formation of

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Ketone

Aidehyde

Ether

Alkyl halide

Which more acidic?

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o-cresol

p-nitrophenol

phenol

m-cresol

Dehydration of an alcohol at 180°

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Alkene

Ether

Ester

An hydride

Which of the following will not give iodoform test?

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Ethanol

Ethanal

Isopropyl alcohol

Benzyl alcohol

Which enzyme is not involved in fermentation of strach

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Diastase

Zymase

Urease

Invertase

Carbolic acid is the other name for

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Methanol

Ethanol

Propanol

Phenol

Picric acid is

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2, 4, 6-Trinitrotoluene

2, 4, 6-Tribomoethanol

2, 4,6-Trinitrophenol

Para-Nitrophenol

An organic compound 'X' on treatment with acidified K₂Cr₂O₇gives a compound 'Y' which reacts with I₂and sodium carbonate to form Triodomethane. The compound 'X' is

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CH₃OH

CH₃CHO

CH₃CH(OH)CH₃

CH₃COCH₃

Phenols are derivative of:

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Alkanes

Alkenes

Alkynes

Benzene

The formula of secondary alcohol is

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R - OH

R - CH₂OH

R₂CHOH

R₃COH

The organic compound, alcohols are much closer to, in structure and hence is also called its derivative:

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Water

Oxidizes of lithium oxides

Oxidizes of magnesium

Oxidizes of aluminium

Compound X has molecular formula C₁₀H₁₄O and is unreactive towards mild oxidising agents. What is the structure of the compound formed by dehydration of X

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Absolute alcohol is obtained by adding rectified apirit in alcohol:

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Water

Na₂CO₃

NaOH

CaO

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1-bromobutane

2-bromobutane

1-bromo-2-methyl propane

2-bromo-2-methyl propane

Ethanol is prepared in Pakistan form fermentation of:

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Starch

Sugar

Glucose

Molasses

When phenol is distilled with zinc dust. It is reduced to

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Benzene

Benzaldehyde

Toluene

Hexanol

Which is used as an antifreeze?

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Glycol

Ethyl alcohol

Water

Methanol

Na reacts with phenol to produce

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H₂gas

Benzene

CO₂gas

CO gas

Dehydration of ethyl alcohol yields

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Aldehyde

Ketone

Acid

Alkene

Which compound shows more hydrogen bonding?

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C₂H₆

C₂H₅Cl

CH₃----O----CH₃

C₂H₅OH

The malt-sugar in the presence of yeast or invertase gives

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Fructose

Glucose

Lignin

Alcohol

Which of the following is weakly acidic in nature

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Alcohol

Phenol

Aidehyde

Amide

Methanol and ethanol can be distinguished by

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Iodoform test

Iucas test

Dichromate/H₂SO₄oxidation test

Flame test

Which structure shows a tertiary alcohol

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CH₃CH₂OH

(CH₃)₂CHOH

(CH₃)₃COH

CH₂OH

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