Question # 1

Which is not the enzyme involved in the preparation of ethyl alcohol by fermentation of starch

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Diastase

Maltase

Zymase

Invertase

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

Ethyl alcohol may be identified by

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Ring test

Iodoform test

Tollen's test

Bazeyer's test

The order of reactivity of halogen acids for reaction with C₂H₅OH is

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HCl > HBr > HI

HI > HBr > HCl

HBr > HI > HCl

HBr > HCl > HI

Dehydration of an alcohol at 180°

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Alkene

Ether

Ester

An hydride

Na reacts with phenol to produce

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H₂gas

Benzene

CO₂gas

CO gas

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 enzyme is not involved in fermentation of strach

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Diastase

Zymase

Urease

Invertase

95% alcohol is called

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Rectified spirit

Spirit of wine

Spirit

Methylated

Which compound is more soluble in water?

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C₂H₅OH

C₅H₅OH

CH₃OCH₃

n-Hexanol

Phenol gives ---------- Colour with neutral FeCl₃solution

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Violet

Green

Red

Blue

Picric acid is

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2, 4, 6-Trinitrotoluene

2, 4, 6-Tribomoethanol

2, 4,6-Trinitrophenol

Para-Nitrophenol

Which of the following is the most suitable method for removing the traces of water from ethanol?

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Reacting with Na metal

Passing dry HCl through it

Distilling it

Reacting with Mg

Which one is primary alcohol?

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Buten-2-ol

Propan-2-ol

Butaon-1-ol

2,3-Dimethylhexane-4-ol

The reaction of aromatic acyl chloride and phenol in the presence of a base NaOH or pyridine is called

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Kolbe's reaction

Perkin's reaction

Sandmeyer's reaction

Schotten Baumann reaction

Which of the following is correct?

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Reduction of any aldehyde gives secondary alcohol

Reaction of vegetable oil with H₂SO₄gives glycerine

Alcoholic iodine with NaOH gives iodoform

Sucrose on reaction with NaCl gives invert sugar

Salol is prepared from

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Salicylic acid and phenol

Salicylic acid and methyl alcohol

Both

None

The formula of secondary alcohol is

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R - OH

R - CH₂OH

R₂CHOH

R₃COH

Ethanol containing some methanol is called

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Absolute spirit

Rectified spirit

Power alcohol

Methylated spirit

Which one of the following correctly describes the acid properties of phenol

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Stronger than HCI

Stronger than carboxylic acid

An acid stronger than carbonic acid

An acid weaker than carboxylic acid

How many secondary alcoholic groups are present in the structure of glucose OHC CHOH CHOHCH OH CHOH CH₂OH

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1

2

3

4

When phenol is reduced in the presence of Zn dust, we get

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Cyclohexene

Cyclohexane

Benzene

Benzyne

Phenol is used in the preparation of

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Bakelite

Phenatherene

Cellulose

All of these

Which of the following is weakly acidic in nature

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Alcohol

Phenol

Aidehyde

Amide

In Lucas test teriary alcohol make an oily layer

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Immediately

In 10 mins

On heating

Not

Which of the following is produced when an aqueous solution of butan-2-ol is refluxed with dil acidified KMnO₄

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Butanol

Butanoic acid

Butanone

Butane

An alcohol with molecular formula C_nH_2n+1OH has a chiral carbon atom but does not react with MnO^-₄/H⁺what is the least number of carbon atoms such an alcohol could possess

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5

6

7

8

Concentration of rectified spirit is:

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12%

14%

90%

95%

The test used for the detection of ethanol in the mouth of a drunk driver is that the drunk driver is asked to blow air from mouth into a solution of K₂Cr₂O₇and H₂SO₄. The colour changes, if the driver is drunk

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From orange to green

From pink to green

From orange to colorless

From pink to colorless

Which of the following compounds will not react with sodium metal to release hydrogen

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CH₃CH₂CH₃

CH₃CH₂OH

C₆H₅OH

C₆H₅CH₂OH

Phenol was discovered by:

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Hofmann

Runge

Henderson

Bakelite

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ECAT Chemistry Chapter 22 Alcohols, Phenols and Ethers Online Test MCQs With Answers

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