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.

Chloromycetin (Chloramphenicol) is effective in the treatment of:

Answer»

Tuberculosis
Malaria
Typhoid
Cholera

Answer :C
2.

Chloromphenical is :

Answer»

Antacids
Broad SPECTRUM antibiotic
Tranquilizer
Artificial SWEETENING agent.

Answer :B
3.

Chloromethane on treatment with excess of ammonia yields mainly

Answer»

N,N-Dimethylmethanamine

N-methylmethanamine `(CH_(3)-NH-CH_(3))`
methanamine `(CH_(3)CH_(2))`
Mixture containing all these in equal proportion

Solution :`CH_(3)Cl+NH_(3)(EXCESS)toCH_(3)NH_(2)+HCL`
4.

Chloroform with zinc dust in water gives

Answer»

`CH_(4)`
CHLOROPICRIN
`C Cl_(4)`
`CH_(2)Cl_(2)`

Answer :A
5.

Benzene reacts with CHCl_(3) in the presence of arhydrous AlCl_(3) to form

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CHLOROBENZENE
toluene
mixture of ORTHO and PARA chlorotoluene
triphenylmenthane

Answer :D
6.

Chloroform with zinc dust in water gives:

Answer»

`C_(2)H_(5)`OH
`(C_(2)H_(5))_(2)`NH
`C_(2)H_(5)NH_(2)`
`(C_(2)H_(5))_(3)` N

Answer :C
7.

Chloroform when treated with benzene in presence of anhydrous AlCl_3, the product formed is:

Answer»

Chlorobenzene
Toluene
mixture of ORTHO and PARA chlorotoluene
Tripenyl methane

Answer :D
8.

Chloroform when treated with amine and KOH gives

Answer»

ROSE smell
Sour ALMOND smell
Sweety smell
Sour OIL smell

Answer :D
9.

Chloroform reacts with the following compound to give a hypnotic

Answer»

Phenol
`R-NH_(2)`
ACETONE
`HNO_(3)`

Solution :`underset("acetone")(CH_(3)-OVERSET(O)overset(||)(C)-CH_(3))overset(CHCl_(3))to(CH_(3))_(2)-underset("CHLORETONE (HYPNOTIC)")(overset(OH)overset(|)(C)-C Cl_(3))`
10.

Chloroform reacts with aniline in presence of KOH to give

Answer»




ANSWER :A
11.

Chloroform on warming with anilineand alcoholic KOH gives

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`C_(6)H_(5)CH_(2)CN`
`C_(6)H_(5)NC`
`C_(6)H_(5)CN`
`C_(6)H_(5)CH=CH_(2)`

Answer :B
12.

Chloroform on reduction with Znand HCl(alc.) gives :

Answer»

FORMIC acid
Chlorotone
Chloropicrin
Methylene dichloride

Answer :D
13.

Chloroform on reaction with conc. HNO_3 gives :

Answer»

Chloropicrin
Nitromethane
Picric acid
Acetylene

Answer :A
14.

Chloroform on reaction with acetone yields:

Answer»

Insecticide
Hypnotic agent
Analgesic
Isocyanide

Answer :B
15.

Condensation of acetone and chloroform in presence of alkali gives :

Answer»

Insecticide
Hypnotic agent
Analgesic
Isocyanide

Answer :B
16.

Chloroform on heating with silver powder gives :

Answer»

ACETYLENE
Methane
Ethylene
Nitro ethane

Solution :`CHCl_(3)+6Ag+Cl_(3)CHrarrHC-=CH+6AgCl`
17.

Chloroform on exposure to air in the presence of light produces

Answer»

PHOSPHORYL chloride.
phosphine .
PHOSPHORUS oxytrichloride.
phosgene.

Answer :d
18.

Chloroform is used as an :

Answer»

Antiseptic
Anaesthetic
Insectiside
Antipyretic

Answer :B
19.

Chloroform is stored in dark colured bottles. Explain in not more than two sentences.

Answer»

SOLUTION :CHLOROFORM in the presence of ari and sunlight oxidises SLOWLY to FORM a highly poisounous compound called phosgene or carbonyl chloride.
`UNDERSET("Chloroform")(2HCl_(3)) + underset(Air)(O_(2)) overset(hv)(rarr) underset("Phosgene")(2COCl_(2)) + 2HCl`
To avoid the oxidation or chlorofom it is kept in dark or yellow coloured bottles and filled up to the brim.
20.

Chloroform is treated with aqueous silver nitrate. What happens?

Answer»

Solution :Pure chloroform does not give precipitate, as the C-Cl bond does not FURNISH free CHLORIDE. IMPURE chloroform gives a white silver chloride precipitate.
`CHCl_(3) + (O) rarr COCl_(2) + HCl`
`HCl + AgNO_(3) rarr AgCl darr + HNO_(3)`
21.

Chloroform is stored in dark coloured bottles. Explain in not more than two sentences.

Answer»

SOLUTION :Chloroform in presence of air and sunlight OXIDISES slowly to form a highly poisonous COMPOUND , called phosegene or carbonyl choride.
`underset("chloroform")(2CHCHl_(3)) + underset("air")(O_(2)) overset(hv)to underset("PHOSGENE")(2 COCl_(2)) + 2HCl`
To avoid the oxidation of chloroform m it is kept in dark or yellow coloured bottles and FILLED upto brim.
22.

Chloroform is stored in closed dark coloured bottles completely filled so that aiir is kept out. Explain.

Answer»

Solution :Because CHLOROFORM is oxidised by air in PRESENCE of LIGHT to FORM an extremely poisonous gas carbonyl
23.

Chloroform is slowly oxidised by airin the presence of light to form

Answer»

formyl chloride
trichloroacetic ACID
phosgene
CO and HCI

ANSWER :C
24.

Chloroform is prepared on large scale by the reduction of CCI_4with

Answer»

Zn + HCL alc
Fe FILINGS and water
`LiAlH_4`
HI + red P

Answer :B
25.

Chloroform is no longer used as an anaesthetic agent because of its toxicity and carcinogenicity. Suggest a safer anaesthetic agent than this.

Answer»

Solution :Halothane `(CF_(3)CHClBr)` is LESS toxic than `CHCl_(3)` and hence is widely used these DAYS.
26.

Chloroform is kept in dark coloured bottle because:

Answer»

It is inflammable
it GIVES a peroxide
It UNDERGOES RAPID reaction
it is oxidised to poisonus phosgene

Answer :D
27.

Chloroform is dichloromethane.

Answer»
28.

Chloroform is generally prepared from ethanol. Iodoform gives a precipitate with AgNO_3 solution while chloroform does not. Why ?

Answer»

Solution : C-I bond in iodoform is WEAKER than C-Cl bond of CHLOROFORM . So C-I bond of iodoform is easily broken to FORM YELLOW precipitate of AgI when heated with `AgNO_3`.
29.

Chloroform easily gets converted to poisonous phosgene in the presence of air and sunlight. Which of the following substances is added to prevent the formation of phosgene?

Answer»

ETHANOL
SODIUM CARBONATE
DIETHYL carbonate
Sodium hydroxide

Answer :A
30.

Chloroform cannot be prepared from which of the following?

Answer»

`CH_(3)OH`
`C_(2)H_(5)OH`
`CH_(3)CHO`
`(CH_(3))_(2)CO`

Solution :`underset("Ethanol")CH_(8)CH_(2)OH+Cl_(2)overset("oxidation")(to)underset("Ethanol")(CH_(3)CHO+2HCl)`
`underset("Ethanol")(CH_(8)CHO)+3Cl_(2) to underset("Chloral")(C Cl_(3)CHO+3HCl)`
`2C Cl_(3)CHO+CA(OH)_(2)to underset("CHLOROFORM")(2CHCl_(2))+underset("Cal. Format")((HCOO)_(2)Ca`
`underset("Acetone")(CH_(3)COCH_(3))+3Cl_(2)to underset("Trichloroacetone")(C Cl_(3)COCH_(3)+3HCl`
`2C Cl_(3)COCH_(3)+Ca(OH)_(2) to 2CHCl_(3)+(CH_(3)COO)_(2)Ca`
31.

Chloroform condenses with acetone to form a compound which is used as a/an:

Answer»

HYPNOTIC
ANAESTHETIC
refrigerant
fire EXTINGUISHER

SOLUTION :
Chloretone is used as hypnotic
32.

Chloroform can be used as

Answer»

PRODUCTION of FREON refrigirant
solvent for FATS and alkaloids
General anaethetic
All the above

Answer :D
33.

Chloroform can be obtained from chloral by the action of :

Answer»

`Ca(OH)_2`
`NAOH`
Both (A) and (B)
none

Answer :C
34.

Chloroform boils at 61.7^(@)Cand the solution of 6.21g of an organic compound is dissolved in 24g of chloroform boils at 68.04^(@)C. What would be the molar mass of compound if K_(b) value is 3.63 K kg mol^(-1).

Answer»

SOLUTION :`148.15g" "MOL^(-1)`.
35.

Chloroform can be obtained from:

Answer»

METHANOL
METHANAL
PROPANOL- 1
Propanol-2

ANSWER :4
36.

Chloroform can be obtained by partial reduction of:

Answer»

`"CCL"_(4)`
`CH_(4)`
`CHCl_(3)`
`CH_(3)`OH

Answer :A
37.

Chloroethane to butane

Answer»

Solution :`2CH_(3)-CH_(2)-CL + 2NA overset("dry ETHER")RARR CH_(3)-CH_(2)-CH_(2)-CH_(3)`
38.

Chloroform + Benzene form non-ideal solution showing positive/negative deviations.

Answer»

SOLUTION :NEGATIVE
39.

Chloraethane reacts with X to from diethyl ether. What is X?

Answer»

`NAOH`
`H_2SO_4`
`C_2H_5ONA`
`Na_2S_2O_3`

ANSWER :C
40.

Chloroethane reacts with X to form diethyl ether. What is X?

Answer»

`NAOH`
`H_2SO_4`
`C_2H_5ONa`
`C_2H_5Cl`

SOLUTION :`C_2H_5ONa`
41.

Chloroethane is reacted with alcoholic potassium hydroxide . The product formed is

Answer»

`C_2H_6O`
`C_2H_6`
`C_2H_4`
`C_2H_4O`

SOLUTION :`C_2H_5Cloverset(Alc.KOH)rarrC_2H_4+HCl`
42.

Chloroethane, 2-chloropropane and chloroethene are treated with methoxide. Which is more reactive towards Williamson's synthesis ?

Answer»

Solution :CHLOROETHANE is more REACTIVE. 2-Chloropropane is being `2^@` halide, is less reactive due to +I EFFECT. Chloroethene has STRONGER C-Cl BOND and so is also less reactive.
43.

Chlorobenzene to p-chloroaniline

Answer»

SOLUTION :
44.

Chlorobenzene to aniline?

Answer»

SOLUTION :CHLOROBENZENE to ANILINE :
45.

Chlorobenzene to 4-chloro acetophenone

Answer»

SOLUTION :CHLOROBENZENE to 4-chloro ACETOPHENONE :
46.

Chlorobenzene reacts with_____in presence of conc. H_(2)SO_(4) to form DDT.

Answer»

SOLUTION :chloral `(C Cl_(3)CHO)`
47.

Chlorobenzene reacts with sodium metal in presence of dry ether to prepare diphenyl the name of the reaction is ……

Answer»

FITTIG reaction
WURTZ - Fitting reaction
Sandmeyer reaction
GATTERMANN reaction

ANSWER :A
48.

Chlorobenzene reacts with Mg in dry ether to give a compound (A) which further reacts with ethanol to yield

Answer»

ETHYLBENZENE
Phenol
Phenylmethyl ether
Benzene

ANSWER :D
49.

Chlorobenzene reacts with alkyl chloride in the presence of sodium metal gives

Answer»

TOLUENE.
XYLENE.
phenol .
benzyl CHLORIDE.

Answer :a
50.

Chlorobenzene on treatment with sodium in ether gives diphenyl. This reaction is known as

Answer»

WURTZ-Fitting REACTION .
FITTIG's reaction .
Wurtz reaction .
Friedel-Crafts reaction .

ANSWER :B