A: Phenol does not react with NaHCO 3 but 2,4,6-trinitrophenol does react, with the evolution of CO 2 R: 2,4,6-trinitrophenol is a stronger acid than carbolic acid.

Both Assertion and Reason are true but the reason is not the correct explanation of the assertion

Both Assertion and Reason are true and the reason is the correct explanation of the assertion

Assertion is a true statement but the reason is false.

Both Assertion and Reason are false statements.

Assertion: Phenol forms 2,4,6-tribromophenol on treatment with Br 2 , in carbon disulphide at 273K. Reason: Bromine polarises in carbon disulphide.

Assertion and Reason both are false

Both Assertion and Reason are true and the Reason is the correct explanation of Assertion.

Both Assertion and Reason are true and Reason is not the correct explanation of Assertion.

Assertion is true but the Reason is false.

Assertion: Phenols give o-and p-nitrophenol on nitration with conc. HNO 3 and H 2 SO 4 mixture. Reason: —OH group in phenol is o-, p-directing.

Assertion is false but Reason is true.

Both Assertion and Reason are true and the Reason is the correct explanation of Assertion.

Both Assertion and Reason are true and Reason is not the correct explanation of Assertion.

Assertion is true but the Reason is false.

Chemistry - Alcoholsphenols Ethers - Quiz-10

A: Phenol does not react with NaHCO₃ but 2,4,6-trinitrophenol does react, with the evolution of CO₂

R: 2,4,6-trinitrophenol is a stronger acid than carbolic acid.

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Both Assertion and Reason are true and the reason is the correct explanation of the assertion
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Both Assertion and Reason are true but the reason is not the correct explanation of the assertion
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Assertion is a true statement but the reason is false.
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Both Assertion and Reason are false statements.

A: Picric acid is more acidic than formic acid.

R: Picric acid has three -COOH groups whereas formic acid has one -COOH group.

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Both Assertion and Reason are true and the reason is the correct explanation of the assertion
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Both Assertion and Reason are true but the reason is not the correct explanation of the assertion
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Assertion is a true statement but the reason is false.
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Both Assertion and Reason are false statements.

A: -OH, -OCH₃ groups are o, p-directing.

R: Ring is activated by the resonance effect of -OH, -OCH₃ groups.

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Both Assertion and Reason are true and the reason is the correct explanation of the assertion.
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Both Assertion and Reason are true but the reason is not the correct explanation of the assertion.
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Assertion is a true statement but the reason is false.
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Both Assertion and Reason are false statements.

Amongst the following, the alcohol that reacts with conc. HCl /anhydrous ZnCl₂ to form alkyl halide at room temperature, will be

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$C H_{3} - C H_{2} - O H$
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$P h - C H_{2} - C H_{2} - O H$
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$P h - C_{\underset{C H_{3}}{|}}^{\overset{C H_{3}}{|}} - O H$
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Anisole on reaction with HI gives-

The reaction between acetone and methylmagnesium chloride followed by hydrolysis will give:

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sec-Butyl alcohol
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tert-Butyl alcohol
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iso-Butyl alcohol
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iso-Propyl alcohol

Cyclohexanol gives best yield of cyclohexene with -

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$conc . H_{3} {PO}_{4}$
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conc.HCl
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conc.HBr
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All of the above

When benzenediazonium chloride is treated with water, the compound formed is :

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$C_{6} H_{5} COOH$
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$C_{6} H_{5} OH$
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$C_{6} H_{6}$
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$C_{6} H_{5} {NH}_{2}$

Which of the following substituted phenols is the strongest acid?

Preparation of phenol from cumene is -

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Reduction Reaction
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Oxidation reaction
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Disproportionation Reaction
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Ozonolysis

The reagent used for the bromination of phenol to 2,4,6-tribromophenol is/are-

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Bromine water
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Br₂, CS₂
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Br₂, CCl₄
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AgBr

Match the structures of the compounds given in Column I with the name of the compounds given in Column II.

Column I	Column II
A.	1. Phenetole
B.	2. o-Cresol
C.	3. Catechol
D.	4. Resorcinol

Codes

A B C D

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2 4 1 3
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3 1 4 2
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1 4 3 2
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4 3 2 1

Match the starting material in Column I with the products formed (Column II) in the reaction with HI.

Column I	Column II
A. ${CH}_{3} - O - {CH}_{3}$	1.
B.	2. ${CH}_{3} \| {CH}_{3} - C - I + {CH}_{3} OH \| {CH}_{3}$
C. ${CH}_{3} \| H_{3} C - C - O - {CH}_{3} \| {CH}_{3}$	3.
D.	4. ${CH}_{3} - OH + {CH}_{3} I$ 5.
	6.

A B C D

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2 3 4 1
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3 1 5 2
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5 4 3 2
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4 5 2 1

$C H_{3} C H_{2} C H = C H_{2} \to_{H_{2} O, H_{2} O_{2}, O H^{-}}^{B_{2} H_{6}} Z$

Z in the above reaction is -

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${CH}_{3} {CH}_{2} {CH}_{2} {CH}_{2} OH$
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${CH}_{3} C H_{2} \underset{\underset{OH}{|}}{C} {HCH}_{3}$
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${CH}_{3} {CH}_{2} {CH}_{2} CHO$
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${CH}_{3} {CH}_{2} {CH}_{2} {CH}_{3}$

Match the items of Column I with items of Column II.

Column l	Column ll
A. Solvent used in perfumes	1. Neutral ferric chloride
B. Wood spirit	2. Glycerol
C. Reagent used for detection of phenolic group	3. Methanol
D. By product of soap industry used in cosmetics	4. Ethanol

Codes

A B C D

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2 3 4 1
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3 1 4 2
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1 4 3 2
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4 3 1 2

Match the items of Column I with items of Column II.

Column l	Column ll
A. Reimer-Tiemann reaction	1. Conversion of phenol to o-hydroxysalicylic aid
B. Kolbe's reaction	2. Heated copper at 573K
C. Conversion of 2 $°$ alcohol to a ketone	3. Reaction of an alkyl halide with sodium alkoxide
D. Williamson's synthesis	4. Conversion of phenol to salicylaldehyde

Codes

A B C D

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2 3 4 1
0%

3 4 1 2
0%

1 4 3 2
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4 1 2 3

Assertion: The addition reaction of water to but-1-ene in acidic medium yields butan-1-ol.

Reason: Addition of water in an acidic medium proceeds through the formation of a primary carbocation.

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Both Assertion and Reason are true and the Reason is the correct explanation of Assertion.
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Both Assertion and Reason are true and Reason is not the correct explanation of Assertion.
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Assertion is true but the Reason is false.
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Both Assertion and Reason are false.

Assertion: p-Nitrophenol is more acidic than phenol.

Reason: Nitro group helps in the stabilization of the phenoxide ion by dispersal of negative charge due to resonance.

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Both Assertion and Reason are true and the Reason is the correct explanation of Assertion.
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Both Assertion and Reason are true and the Reason is not the correct explanation of Assertion.
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Assertion is true but the reason is false.
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Assertion is false but the reason is true.

Assertion: IUPAC name of the compound

is 2-ethoxy-2-methylethane.

Reason: In IUPAC nomenclature, ether is regarded as a hydrocarbon derivative in which a hydrogen atom is replaced by —OR or —OAr group

[where, R = alkyl group and Ar = aryl group].

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Both Assertion and Reason are true and the Reason is the correct explanation of Assertion.
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Both Assertion and Reason are true and the Reason is not the correct explanation of Assertion.
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Assertion is true but the Reason is false.
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Assertion is false but the Reason is true.

Assertion: Bond angle in ethers is slightly less than the tetrahedral angle.

Reason: There are a repulsion between the two bulky (— R) groups.

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Both assertion and Reason are true and the Reason is the correct explanation of Assertion.
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Both Assertion and Reason are true and Reason is not the correct explanation of Assertion.
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Assertion is true but the Reason is false.
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Assertion is false but Reason is true.

Assertion: Boiling points of alcohols and ethers are high.

Reason: They can form intermolecular hydrogen bonding.

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Both Assertion and Reason are true and the Reason is the correct explanation of Assertion.
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Both Assertion and Reason are true and Reason is not the correct explanation of Assertion.
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Assertion is true but the Reason is false.
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Assertion and Reason both are false.

Assertion: Bromination of phenol is carried out in the presence of Lewis acid.

Reason: Lewis acid polarizes the bromine molecule.

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Both Assertion and Reason are true and the Reason is the correct explanation of Assertion.
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Both Assertion and Reason are true and Reason is not the correct explanation of Assertion.
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Assertion is true but the Reason is false.
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Assertion is false but Reason is true.

Assertion: o-Nitrophenol is less soluble in water than the m and p-isomers.

Reason: m and p-Nitrophenols exist as associated molecules.

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Both Assertion and Reason are true and the Reason is the correct explanation of Assertion.
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Both Assertion and Reason are true and Reason is not the correct explanation of Assertion.
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Assertion is true but the Reason is false.
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Assertion is false but Reason is true.

Assertion: Ethanol is a weaker acid than phenol.

Reason: Sodium ethoxide may be prepared by the reaction of ethanol with aqueous NaOH.

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Both Assertion and Reason are true and the Reason is the correct explanation of Assertion.
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Both Assertion and Reason are true and Reason is not the correct explanation of Assertion.
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Assertion is true but the Reason is false.
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Assertion is false but Reason is true.

Assertion: Phenol forms 2,4,6-tribromophenol on treatment with Br₂, in carbon disulphide at 273K.

Reason: Bromine polarises in carbon disulphide.

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Both Assertion and Reason are true and the Reason is the correct explanation of Assertion.
0%

Both Assertion and Reason are true and Reason is not the correct explanation of Assertion.
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Assertion is true but the Reason is false.
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Assertion and Reason both are false

Assertion: Phenols give o-and p-nitrophenol on nitration with conc. HNO₃ and H₂SO₄ mixture.

Reason: —OH group in phenol is o-, p-directing.

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Both Assertion and Reason are true and the Reason is the correct explanation of Assertion.
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Both Assertion and Reason are true and Reason is not the correct explanation of Assertion.
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Assertion is true but the Reason is false.
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Assertion is false but Reason is true.

The number of structural isomers of alcohol of formula C₅H₁₂O are -

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4
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6
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8
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10

The number of monohydric phenols that can have the molecular formula, C₇H₈O are-

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2
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3
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4
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5

If chlorobenzene is treated with A. NaOH and B. HCl

The final product formed is :

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Benzamide
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Phenol
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Cumene
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Benzoic acid

Phenol is more acidic than ethanol due to -

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Resonance
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Phenoxide ions
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Less -I effect
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More ability to gain a proton

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Practice Chemistry Quiz Questions and Answers

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Practice Chemistry Quiz Questions and Answers

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