Explore topic-wise InterviewSolutions in Current Affairs.

This section includes 7 InterviewSolutions, each offering curated multiple-choice questions to sharpen your Current Affairs knowledge and support exam preparation. Choose a topic below to get started.

1.

Phenolphthalein does not act as indicator for the titration between :

Answer»

KOH and `H_2SO_4`
`BA(OH)_2` and HCl
NaoH and acetic ACID
Oxalic acid and `KMnO_4`

ANSWER :D
Discussion
2.

Phenolphthalein is a:

Answer»

WEAK acid
Weak base
strong acid
Strong base

Answer :A
Discussion
3.

Phenolphthaleis not a good indicator for titrating :

Answer»

NaOH against oxalic acid
NaOH against HCl
Ferrous SULPHATE against `KMnO_(4)`
NaOH against `H_(2)SO_(4)`

ANSWER :C
Discussion
4.

Phenolphthalein does not act as an indicator for the titration between

Answer»

NAOH and `CH_(3)COOH`
`H_(2)C_(2)O_(4)` and `KMnO_(4)`
`Ba(OH)_(2)` and HCl
KOH and `H_(2)SO_(4)`

Answer :B
Discussion
5.

Phenolic antibacterial used in body deodorants is

Answer»

2,4-dichlorophenol
p-chloro-m-xylenol
p-chlorophenol
p-nitro-m-xylenol

Solution :p-Chloro-m-xylenol is PHENOLIC ANTIBACTERIAL DEODORANT.
Discussion
6.

Phenolic antibacterial used in body deodrants is

Answer»

2, 4-Dichlorophenol
p-Chloro-m-xylenol
p-Chlorophenol
p-Nitro-m-xylenol

Solution :p-chloro-m-xylenol is PHENOLIC ANTIBACTERIAL DEODORANTS.
Discussion
7.

Phenols are more acidic than alcohols. What is the product obtained when phenol is treated with conc.HNO_3?

Answer»

o-Nitrophenol
p-Nitrophenol
2,4,6-Trinitrophenol
a MIXTURE of o-nitrophenol

Answer :C
Discussion
8.

Phenol, when it first reacts with concentrated sulphuric acid and then with concentrated nitric acid, gives

Answer»

2,4,6-trinitrobenzene.
o-nitrophenol.
p-nitrophenol.
nitrobenzene.

Answer :B
Discussion
9.

Phenol , when first reacts with concentrated sulphuric acid and then when concentrated nitric acid, gives

Answer»

o-nitrophenol
p-nitrophenol
Nitrobenzene
2,4,6-trinitrophenol

Solution :It GIVES 2,4,6-Trinitrophenol.
Discussion
10.

Write the following reactions : Phenol with zinc dust.

Answer»

Benzene
Benzaldehyde
Benzoic acid
Benzophenone.

Answer :A
Discussion
11.

"Phenol" underset("Powder")overset(Zn)to X underset("Anhy." AlCl_(3))to Y underset(KMnO_(4))overset("Alkaline")to Z What is Z?

Answer»

Benzaldehyde
Benzoic acid
Benzene
Toluene

Solution :
Discussion
12.

Phenol underset(Delta)overset(Zn)toX.The compound X on acylation gives aliphatic aromatic ketone. The reaction is

Answer»

Gattermann REACTION
Friedal-CRAFT reaction
WURTZ reaction
None of these

Solution :
In Friedal craft's reaction ACETYL chloride reacts with benzene in the presence of ANHYDROUS aluminium trichloride to form acetophenone.
Discussion
13.

Phenol underset("distillation")overset(Zn)to A underset(Conc. HNO_(3))overset(Conc. H_(2)SO_(4))to B underset(NaOH)overset(Zn)toC In the above reaction A, B and C are the following compounds

Answer»

`C_(6)H_(6), C_(6)H_(5)NO_(2)` and ANILINE
`C_(6)H_(6)` di-nitrobenzene and meta-nitroaniline
Toluene, meta-nitrobenzene and meta-toluedine
`C_(6)H_(6),C_(6)H_(5)NO_(2)` and hydrazobenzene

Solution :
Discussion
14.

Phenol treated with excess of bromine water gives _____.

Answer»


ANSWER :2, 4, 6 - TRIBROMOPHENOL
Discussion
15.

Benzene underset("anhydrous" AICI_(3))overset(CH_(3)CI)(to) X overset("alkaline" KMnO_(4))(to) Y overset("alkaline" KMnO_(4))(to) Z, The product Z is

Answer»

Benzaldehyde
Benzoicacid
Benzene
Toluene

Answer :B
Discussion
16.

Phenol turns ________ when air oxidised.

Answer»

red
violet
BLUE
GREEN

ANSWER :A
Discussion
17.

How would you convert the following : (i)Phenol to benzoquinone (ii) Propanone to 2-methylpropan -2 ol (iii) Propene to propan -2 - ol

Answer»

SOLUTION :PHENOL to BENZOQUINONE :
Discussion
18.

How will you convert : (i) Chlorobenzene to phenol (ii) Phenol to salicylic acid ?

Answer»

SOLUTION :PHENOL to SALICYLIC ACID :
Discussion
19.

Phenol to anisole

Answer»

SOLUTION :PHENOL to ANISOLE :
Discussion
20.

Phenol to Benzene

Answer»

SOLUTION :PHENOL to BENZENE :
Discussion
21.

Phenol reacts with which one of the following reagents gives a conjugate diketone will be formed ?

Answer»

`Na_(2)Cr_(2)O_(7)`
conc. `HNO_(3)`
`Zn, Delta`
`Na_(2)Cr_(2)O_(7)+H_(2)SO_(4)`

ANSWER :D
Discussion
22.

Phenol reacts with methyl chloroform in the presence of NaOH to form product A. A reacts with Br_(2) to form product B . A and B are respectively-

Answer»




ANSWER :A
Discussion
23.

Phenol reacts with NH_(3) to give

Answer»

benzamide
benzoic acid
ANILINE
None of the above

Solution :Phenol reacts with ammonia in the PRESENCE of ANHYDROUS `ZnCl_(2)` to give aniline.
Discussion
24.

Phenol reacts with methyl chloroformate in the presence of NaOH to form product A. A reacts with Br_(2) to form product B. A and B are respectively

Answer»




SOLUTION :
Discussion
25.

Phenol reacts with mercuric acetate to form _____and_____ when heated in presence of _____.

Answer»

<P>

Answer :(0 - HYDROXY, p -hydroxy phenyl mercuric acetate, ETHANOIC acid
Discussion
26.

Phenol reacts with HCHO in presence of dilute acid forms _____.

Answer»


ANSWER :BAKELITE
Discussion
27.

Phenol reacts with excess bromine water to give

Answer»

m bromophemophenol
0 and p BROMOPHENOL
2,4,6 TRIBROMOPHENOL
2,4 dibromophenol

Answer :C
Discussion
28.

How does phenol react with: HNO_3

Answer»

o-Nitrophenol
p-Nitrophenol
m-Nitrophenol
Picric acid

Answer :D
Discussion
29.

Phenol reacts with bromine water to give a ………………… precipitate of ……………………… .

Answer»

SOLUTION :WHITE, 2,4, 6-tribromo PHENOL
Discussion
30.

Phenol reacts with bromine is CS_(2) to give :

Answer»

<P>o - bromophenol
m - bromophenol
o & p - bromophenol
2, 4, 6 - tribromophenol.

Answer :C
Discussion
31.

Phenol reacts with bromine in CS_(2) to give

Answer»

o-bromophenol
m-bromophenol
o and p-bromophenol
2,4,6-tribromophenol

Solution :o- and p-bromophenol
Discussion
32.

Phenol reacts with bromine in CS_2 at low temperature to give

Answer»

m-bromophenol
p-bromophenol
o- and p-bromophenols
2, 4, 6-tribromophenol

Answer :C
Discussion
33.

Phenol reacts with bromine in CS_2, to give:

Answer»

o-Bromophenol
o and p-Bromophenol
p-Bromophenol
2,4,6-Tribromophenol

Answer :B
Discussion
34.

Phenol reacts with Br_2 in C Cl_4 at low temperature to give

Answer»

<P>o- and p- bromophenol
m-bromophenol
p-bromophenol
2, 4, 6-tribromophenol

Answer :A
Discussion
35.

Phenol reacts with benzoyl chloride in presence of NaOH. What is the product formed? What is the name of this reaction?

Answer»

SOLUTION :PHENYL BENZOATE. Schotten-Baumann REACTION.
Discussion
36.

"Phenol" overset("Znpower")to X underset("Anhy." AICl_(3))to Y underset(KmnO_(4))overset("Alkaline")to Z what is Z?

Answer»

Benzaldehyde
Benzene
Toluene
BENZOIC ACID

Solution : Benzoic acid
Discussion
37.

Phenol reacts with aqueous bromine to give :

Answer»

<P>o - bromophenol
m - bromophenol
o & p - bromophenol
2, 4, 6 - tribromophenol.

Answer :D
Discussion
38.

Phenol reacts with Br_2 water to give

Answer»

o-Bromophenol
m-Bromophenol
o and p-Bromophenol
2,4,6-Tribromophenol

Answer :D
Discussion
39.

"Phenol" overset(x)toTribromo derivative. What is X?

Answer»

BROMINE + Benzene
Bromine + WATER (Bromine water)
POTASSIUM bromide
Bromine + `CCI_(4)`

SOLUTION :Bromine + Water (Bromine water)
Discussion
40.

Phenol overset(NaNO_(2)//H_(2)SO_(4))to B overset(H_(2)O)to C overset(NaOH)toD name of the reaction is

Answer»

Liebermann's REACTION
Phthalein FUSION test
Reimer-Tiemann reaction
Schotten-Baumann reaction

Solution :Liebermann.s reaction

Discussion
41.

Phenol overset(X)rarr forms a tribromo derivative. X is

Answer»

BROMINE in benzene
bromine in water
potassium BROMIDE SOLUTION
bromine in CARBON tetrachloride at `0^(@)C`

Solution :
Discussion
42.

Phenol overset(X)(to) forms a tribromo derivation. ''X'' is

Answer»

BROMINE in BENZENE
bromine in water
potassium bromide solution
bromine in CARBON tetrachloride at `0^(@)C`.

Solution :
Discussion
43.

Phenoloverset((CH_3CO) _2O,H^(+)) to A overset(AlCl_3.Delta )to B+CIf 'B' is steam volatile, incorrect statement among the following is

Answer»

Second step is CALLED Fries rerrangement
First step is called acetylation
BOILING POINTS of 'B' is less than that of 'C'
C' is 3- Hydroxy acetophenone.

Answer :D
Discussion
44.

Phenol overset(NaNO_(2)//H_(2)SO_(4))to B overset(H_(2)O)to C overset(NaOH)to D Name the above reaction is

Answer»

Liebermann REACTION
Phthalein FUSION test
Reimer-Tiemann reaction
Schotten-Baumann reaction

Solution :Liebermann's reaction
Discussion
45.

Phenol overset( NaOH) to A underset((2)H^(+)) overset((i)CO_2) to B overset((CH_3CO) _2 O, H^(+))to CIncorrect statement among the following is

Answer»

Preparation of 'B' from phenol is CALLED Kolbe s' REACTION.
B' is steam volatile
C' has a free -OH group if 'B'
C' can be USED as antiflammatory , ANALGESIC and antipyretic.

Answer :C
Discussion
46.

Phenol overset( conc. H_2SO_4 )toA overset( Conc .HNO_3) to BHereA and B are respectively.

Answer»

<P>P- Hydroxy benzenesulphonic acid, P- NITROPHENOL
4- Hydroxybenzene -1,3- dislphonic acid, picric acid
4- Hydroxybenzene -1,3 disulphonic acid, 2,4- dinitrophenol
3-Hydroxybenzenesulphonic acid , picric acid

Answer :B
Discussion
47.

Phenol on treatment with conc. HNO_(3) produces

Answer»

2-nitrophenol.
4-nitrophenol
2, 4- Dinitrophenol
2, 4, 6 - Trinitrophenol

Answer :D
Discussion
48.

Phenol on treatment with diethyl sulphate in presence of NaOH gives

Answer»

PHENETOLE
Anisole
DIPHENYL ETHER
Diethyl ether.

SOLUTION :`2C_6H_5OH+(CH_3CH_2)SO_4overset(NAOH)to`
`2C_6H_5OH-underset("Phenetole")(O-CH_2CH_3+Na_2SO_4`
Discussion
49.

Phenol on treatment with CO_(2)//NaOH gives salicylic acid. This reaction is known as ___________.

Answer»

SOLUTION :Kolbe.s REACTION.
Discussion
50.

Phenol on treatment with conc. H_(2)SO_(4) at 300 K gives

Answer»

o-phenol sulphonic ACID
p-phenol sulphonic acid
a MIXTURE of o-and p-phenol sulphonic acid
benzoic acid

Answer :A::B::C::D
Discussion