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.

The compound CH_3CH_2CHO and CH_3COCH_3 illustrate:

Answer»

POSITION isomerism
geometrical isomerism
functional isomerism
chain isomerism

Answer :C
Discussion
2.

The compound CH_3CH_2CH_2Br is converted into CH_3CH_2CH_2OH by:

Answer»

Dehydration
Hydrogenation
Elimination
Substitution

Answer :D
Discussion
3.

The compound (CH_(3))_(2)C(OH)CH_(2)CH_(3) iscalled:

Answer»

2-methylbutan-2-ol
isoamylalcohol
ethyldimethylcarbinol
tert-pentylalcohol

Answer :a,C,d
Discussion
4.

The compound (CH_(3))_(2).overset(OH)overset(|)(C)C Cl_(3) is

Answer»

Chloretone
Chloroquin
chloropicrin
Chloropropyl chloride

Solution :
Discussion
5.

The compound (CH_3)_2CH-CHCl-CH_3 reacts with alcoholic KOH to give the following alkene:

Answer»

`(CH_3)_2CH-CH=CH_2`
`CH_2-CH=C=CH_2`
`CH_3-CH_2-CH=CHCH_3`
`(CH_3)_2C=CH-CH_3`

ANSWER :A
Discussion
6.

The compound CH_(3)-underset(Cl)underset(|)overset(CH_(3))overset(|)C-CH_(3) will undergo ________.

Answer»

`S_(N)1` MECHANISM
`S_(N)2` mechanism
`S_(N)1 and S_(N)2` mechanism
none of these

Answer :A
Discussion
7.

The compound CH_3-oversetoverset(CH_3)|C=CH-CH_3 on reaction with NaIO_4 in the presence of KMnO_4 gives

Answer»

`CH_3CHO+CO_2`
`CH_3COCH_3`
`CH_3COCH_3+CH_3COOH`
`CH_3COCH_3 + CH_3CHO`

SOLUTION :`CH_3-oversetoverset(CH_3)|C=CH-CH_3underset(KMnO_4)OVERSET(NaIO_4)to CH_3COCH_3+CH_3CHO`
Discussion
8.

The compound CH_(3)-overset(CH_(3))overset(|)(C)=CH-CH_(3) on reaction with NalO_(4) in the presence of KMnO_(4) gives

Answer»

`CH_(3)COOH`
`CH_(3)COCH_(3)+CH_(3)COOH`
`CH_(3)COOCH_(3)+CH_(3)CHO`
`CH_(3)CHO+CO_(2)`

Answer :B
Discussion
9.

The compound CH_(3)-C-=C-CH_(3) can be names as:

Answer»

dimethylacetylene
crotonylene
but-2-yne
allylene

Answer :a,B,C
Discussion
10.

The compound C_8H_9Cl(A) on treatments with KCN followed by hydrolysis gives C_9H_10O_2(B).Ammonium salt of B on dry distillation yields C.Which reacts with alkaline solution of bromine to gives C_8H_11N.(D),Another compound E (C_6H_10O) is obtained by the action of nitrous acid on D. or by the action of aquouspotash on A,E on oxidation gives F(C_8H_10O) Which gives the inner anhydride G on heating. The compound A on reaction with AgCN gives :

Answer»

COMPOUND H
Compound B
Compound G
Compound D

Solution :
Discussion
11.

The compound C_8H_9Cl(A) on treatments with KCN followed by hydrolysis gives C_9H_10O_2(B).Ammonium salt of B on dry distillation yields C.Which reacts with alkaline solution of bromine to gives C_8H_11N.(D),Another compound E (C_6H_10O) is obtained by the action of nitrous acid on D. or by the action of aquouspotash on A,E on oxidation gives F(C_8H_10O) Which gives the inner anhydride G on heating. The compound D is reaction with CHCl_3+NaOH gives a compound H.The structure of H.

Answer»




SOLUTION :
Discussion
12.

The compound can exhibit :

Answer»

GEOMETRICAL ISOMERISM
tautomerism
OPTICAL isomerism
geometrical and optical isomerism

Answer :C
Discussion
13.

The compound C_8H_9Cl(A) on treatments with KCN followed by hydrolysis gives C_9H_10O_2(B).Ammonium salt of B on dry distillation yields C.Which reacts with alkaline solution of bromine to gives C_8H_11N.(D),Another compound E (C_6H_10O) is obtained by the action of nitrous acid on D. or by the action of aquouspotash on A,E on oxidation gives F(C_8H_10O) Which gives the inner anhydride G on heating. The compound A is :

Answer»




SOLUTION :
Discussion
14.

The compound, C_(7)H_(8)overset(3Cl_(2)//Delta)toA overset(Br_(2)//Fe)toB overset(Zn//HCl)toC ltBrgt The compound C is

Answer»

o-Bromotoluene
m-Bromotoluene
p-Bromotoluene
3-Bromo-2,4,6-trichlorotoluene.

Solution :m-Bromotoluene (B) is FORMED.
Discussion
15.

The compound C_7H_8 undergoes the following reactions C_7H_8overset(3Cl_2//Delta)to A overset(Br_2//Fe)to B overset(Zn//HCl)to C The product 'C' is

Answer»

m-bromotoluene
o-bromotoluene
3-bromo-2,4,6-trichlorotoluene
p-bromotoluene

Solution :
Discussion
16.

The compound C_7H_8overset(3Cl_2/Delta)rarrAoverset(Br_2/Fe)rarrBoverset(Zn/HCl)rarrC The compound C is

Answer»

o-Bromotoluene
m-Bromotoluene
p-Bromotoluene
3-Bromo-2,4,6-trichlorotoluene

Solution :m-Bromotoluene
Discussion
17.

The compound C_(7)H_(8) undergoes the following reaction. C_(7)H_(8)overset(3Cl_(2)//Delta)toAoverset(Br_(2)//Fe)toBoverset(Zn//HCl)toC The product C is

Answer»

m-bromotoluene
o-bromotoluene
3-bromo-2,4,6-trichlorotuene
p-bromotoluene.

Solution :.
Discussion
18.

The compound C_(6)H_(5)-CH=CH-COOH may be called as:

Answer»

succinic ACID
3-phenylprop-2-en-1-oic acid
mandelic acid
cinnamic acid

ANSWER : B,d
Discussion
19.

The Compound C_6H_5 CH_2 CH(CH_3)Cl on heating with alc. KOH gives

Answer»

2- phenylpropene
1- phenylpropene
3- phenylpropene
1- phenylpropan-2-ol

SOLUTION :`C_6H_5CH_2undersetoverset(|)(CH_3)(C )H - Cl underset(KOH)OVERSET(alc)(to)underset("1-phenyl propene")(C_6H_5-CH = CH - CH_3)`
Discussion
20.

The compound C_(6)H_(12)O_(4) contains

Answer»

22 atoms per mole
TWICE the mass percent of H as compared to the mass percent of C
six times the mass percent of C as compared to the mass percent of H
thrice the mass percent of H as compared to the mass percent of O

Solution :There are `6.022xx10^(23)` entities in 1 mole. Atomic mass of carbon =12 atomic mass of hydrogen =1 |atomic mass of oxygen =16 molecular mass = `(6xx12)+(12xx1)+(4xx16)=71+12+64=148`\ mass percentage of carbon =72/148 =49% mass percentage of hydrogen =12/148 =8% Mass percentage of oxygen =64/148=43%
Discussion
21.

The compound C_(5)H_(10) does not react with Cl_(2) in dark but gives a single monochloro compound C_(5)H_(9)Cl. The hydrocarbon is :

Answer»

METHYL CYCLOBUTANE
CYCLOPENTANE
Pent-2-ene
2, 2-Dimethyl propane

Answer :C
Discussion
22.

The compound C_(4)H_(10)O can show

Answer»

Metamerism
Functional isomerism
Positional isomerism
All types

Solution :Position isomers :
`underset("Butan-1-ol")(CH_(3)-CH_(2)-CH_(2)-CH_(2)-OH)` and`{:(CH_(3)-CH_(2)-CH-CH_(3)),("|"),(""OH),("Butane-2-ol"):}`
Functional isomers :
`underset("Butanol")(CH_(3)CH_(2)CH_(2)-CH_(2)-OH)` and `underset("Diethylether")(C_(2)H_(5)-O-C_(2)H_(5))`
Metamers: `underset("Diethyl ether")(C_(2)H_(5)-O-C_(2)H_(5))` and `underset("Methyl propyl ether")(CH_(3)-O-C_(3)H_(7))`
Discussion
23.

The compound C_(4)H_(10)O can show :

Answer»

METAMERISM
FUNCTIONAL isomerism
positional isomerism
all types

Answer :D
Discussion
24.

The compound, C_(3)H_(6)O_(2) is mixed with dilute solution of 2% Na OH containing a drop of phenolphthalein and boiled. The pink colour is discharged. The compound could be :

Answer»

`HCOOC_(2)H_(5)`
`CH_(3)COOH`
`C_(2)H_(5)COOH`
EITHER (a) or (B)

Answer :A
Discussion
25.

The compound C_3H_4 has a triple bond , which is indicated by its reaction with

Answer»

Bromine water
Baeyer's reagent
Fehling solution
Ammoniacal SILVER nitrate

Solution :`UNDERSET"PROPYNE"(CH_3-C-=C-H)+underset"AMMONICAL"(AgNO_3)to underset"Silver SALT of Propyne"(CH_3-C-=C-Ag)`
Discussion
26.

The compound C_(2)H_(4)Cl_(2) has two isomers and they can be distinguished by the reaction with

Answer»

AQ. KOH
Alc. KOH
Bromine WATER
`NaNH_(2)`

ANSWER :A
Discussion
27.

The compound (C) is changed into a compound (D) when its aqueous solution is boiled.

Answer»


ANSWER :`D=K_(3)[CO(CN)_(6)]`
Discussion
28.

The compound C Cl_(2)=CHCl is known as westrosol. Which statements are correct regarding this compound?

Answer»

It is obtained by TREATING westron with `Ca(OH)_(2)`
It is USED as a SOLVENT.
It is used in refrigerators
None of the above

ANSWER :A::B
Discussion
29.

The compound (C ) and (D), respectively, are:

Answer»

a.
b.
c.
d.

Solution :
Discussion
30.

The compound BrC_6H_4OH is __________.

Answer»

o-BROMOPHENOL
bromophenol
m-bromophenol
p-bromophenol

ANSWER :B
Discussion
31.

The compound (B) is:

Answer»

a.
b.
c.
d.

Solution :
Discussion
32.

The compound B formed in the following sequences of reactions is CH_3CH_2CH_2OHoverset(PCl_3)to A overset"alco.KOH"to B

Answer»

Propyne
PROPENE
Propanol
Propane

Solution :`CH_3-CH_2-CH_2-OH overset(PCl_3)to`
`UNDERSET"PROPYLCHLORIDE"underset"(A)"(CH_3-CH_2-CH_2-Cl)overset"Alc. KOH"to undersetunderset"Propene"underset"(B)"(CH_3-CH=CH_2)`
Discussion
33.

The compound B formed in the following sequence of reactions,CH_3CH_2CH_2OH overset(PCI_5)rarr A overset (Aic. NaoH)rarr B will be :

Answer»

Propyne
Propene
Propanal
Propane

Answer :B
Discussion
34.

The compound 'B' formed in the following sequence of reaction. CH_(3)CH_(2)CH_(2)OH overset(PCl_(5))to A overset("Alc. KOH")to B is

Answer»

Propyne
Propene
Propanal
Propane

Answer :B
Discussion
35.

The compound added to prevent chloroform to form phosgene gas is

Answer»

`C_(2)H_(5)OH`
`CH_(3)CO OH`
`CH_(3)COCH_(3)`
`CH_(3)OH`

Solution :Because it float over chloroform and PREVENT its oxidation.
Discussion
36.

The compound 'A' when trated with ceric ammonium nitrate solution gives yellow ppt. the compound 'A' is

Answer»

ALCOHOL
Aldehyde
Acid
Alkane

Solution :`underset("Alcohol")(R-OH)+ underset("Cerric amm. NITRATE")((NH_(4))_(2)Ce(NO_(3))_(6)) to underset("YELLOW PPT.")(Ce(NO_(3))_(6)(ROH)_(9))+ 2N+14NO_(3)`
Discussion
37.

The compound abd C-C abd will exist in:

Answer»

3 forms
4 forms
5 forms
2 forms

Answer :A
Discussion
38.

The compound A when treated with methyl alcohol and few drops of H_(2)SO_(4) gave smell of winter green. The compound A is

Answer»

succinic ACID
SALICYLIC acid
tartaric acid
OXALIC acid.

Solution :
Discussion
39.

The compound 'A' when treated with HNO_3(in presence of H_2SO_4) gives compound 'B' which is then reduced with Sn and HCl to aniline. The compound 'A' is

Answer»

Toluene
Benzene
Ethane
Acetamide

Solution :
Discussion
40.

The compound (A) on treatment with Na gives (B) and with SOCl_(2) gives (C). The (B) and (C) react together to give dimethyl ether. The (A), (B), (C ) are in the order.

Answer»

`CH_(3)OH, CH_(3)Cl, CH_(3)ONA`
`CH_(3)OH, CH_(3)ONa, CH_(3)Cl`
`CH_(3)ONa, CH_(3)Cl, CH_(3)OH`
`CH_(3)Cl, CH_(3)ONa, CH_(3)OH`

ANSWER :B
Discussion
41.

The compound A on treatment with Na gives B, and with PCl_(5) gives C. B and C react together to give diethyl ether . A,B and C are in the other

Answer»

`C_(2)H_(5)OH, C_(2)H_(6), C_(2)H_(5)Cl`
`C_(2)H_(5)OH, C_(2)H_(5)Cl, C_(2)H_(5)O"N"a`
`C_(2)H_(5)Cl, C_(2)H_(6),C_(2)H_(5)OH`
`C_(2)H_(5)OH,C_(2)H_(5)O"N"a,C_(2)H_(5)Cl`

Solution :
Discussion
42.

The compound (A) is a white solid. When heated strongly, it leaves no residue. On treating (A) with NaOH solution, a colourless pungent smelling gas (B) is evolved which is industrially highly useful. When the compound (A) is acidified with dilute HCl, a reddish brown gas (C ) is evolved. The pungent smelling gas (B) is

Answer»

sulphur dioxide
chlorine
hydrogen chloride GAS
ammonia.

Solution :The PUNGENT smelling gas on treating ammonium nitrite with NaOH is ammonia `(NH_(3))`.
`underset((A)) (NH_(4)NO_(2))+ NaOH to NaNO_(2) + underset((B)) (NH_(3)+H_(2)O)`
Discussion
43.

The compound (A) is a white solid. When heated strongly, it leaves no residue. On treating (A) with NaOH solution, a colourless pungent smelling gas (B) is evolved which is industrially highly useful. When the compound (A) is acidified with dilute HCl, a reddish brown gas (C ) is evolved. The compound (A) is :

Answer»

ammonium nitrite
ammonium chloride
sodium nitrite
sodium nitrate.

Solution :The compound (A) is ammonium nitrite as is suggested from the AVAILABLE information. It decomposes as :
`underset((A)) (NH_(4)NO_(2)) overset("heat")to underset(("no residue")(N_(2)+2H_(2)O)`
Discussion
44.

The compound 'A' is heated under pressure with excess of aqueous NaOH . Then the current of carbon dioxide is passed through the resultant aqueous solution to yield compound 'B'. The compound 'B' on heating with formaldehyde under pressure furnishes a thermosetting polymer called as 'Bakelite'. What is the name of compound 'A' ?

Answer»

Cumene
Chlorobenzene
Benzene sulphonic acid
Aniline

Answer :B
Discussion
45.

The compound A in the following reaction sequence is

Answer»

chloroethane
ethanol
1,2-dichloroethane
None of these

Solution :`Aoverset(PCl_(5))rarrBoverset(Alc.KOH)rarrCoverset(H_(2)//NL)rarr"PROPANE"`
Discussion
46.

The compound (A) is:

Answer»

a.ACIDIC `KMnO_(4)`
b.`KOBr//H_(3)O^(o+)`
c.`SeO_(2)//MeCOOH`
d.Jones reagent

Solution :`(a)`, acidic `KMnO_(4)` would oxidise both the `(C=C)` bond and keto GROUP. In `(b), KOBr` (Haloform reaction) would convert the `(-overset(O)overset(||)(C )-Me)` group to the `(O^(ɵ)-overset(O)overset(||)(C )-)` group, without affecting the `(C=C)` bond.

In `(c ), SeO_(2)//MeCOOH` would oxidise the active methyl group to `(-CHO)` group.
In `(d)`, Jones reagent `(H_(2)CrO_(4) + "aqueous acetone")` will not react, so the answer is `(b)`.
Discussion
47.

The compound 'A' i.e. butyronitrile is subjected to the Stephen reaction by using SnCl_(2) and dil. HCl followed by acid hydrolysis to give compound 'B' , which is having a buttery odour and it is used in margarine. Addition of hydrogen cyanide to compound 'B' in the presence of small amount of base gives compound 'C'. Identify the compounds 'B' and 'C'.

Answer»

`CH_(3)CH_(2)CH_(2)COOH, CH_(3)CH_(2)CH_(2)overset(O)overset(||)C-CN`
`CH_(3)-overset(O)overset(||)C-CH_(2)-CH_(3), CH_(3)-overset(CN)overset(||)CH-CH_(2)-CH_(3)`
`CH_(3)CH_(2)CHO , CH_(3)-CH_(2)-overset(CN)overset(|)CH-CH_(3)`
`CH_(3)CH_(2)CH_(2)CHO , CH_(3)-CH_(2)-CH_(2)-overset(CN)overset(|)CH-OH`

ANSWER :D
Discussion
48.

The compound 'A' i.e. propanamide is treated with bromide and alcoholic sodium hydroixde to give compound 'B'. The acid catalysed addition of valeraldehyde to compound 'B' yields compound 'C'. Which is well known as a Schiff base. What are the structures of compounds 'B' and 'C' ?

Answer»

`CH_(3)-CH_(2)-NH_(2), CH_(3)-CH_(2)-CH_(2)-OVERSET(H)overset(|)C=N-CH_(2)-CH_(3)`
`CH_(3)-CH_(2)-CH_(2)-NH_(2), CH_(3)-CH_(2)-CH_(2)-overset(H)overset(|)C=N-CH_(2)-CH_(3)`
`CH_(3)-NH_(2), CH_(3)-CH_(2)-CH_(2)-CH_(2)-overset(H)overset(|)C=N-CH_(3)`
`CH_(3)-CH_(2)-NH_(2), CH_(3)-CH_(2)-CH_(2)-overset(H)overset(|)C=N-CH_(2)-CH_(3)`

ANSWER :A
Discussion
49.

The compound A gives following reactions Its structure can be

Answer»

`CH_(2)=CH-(CH_(2))_(2)-UNDERSET(o)underset(||)c-CH_(2)OH`
`OHC-(CH_(2))_(2)-CH=CH-COOH`

Solution :
Discussion
50.

The compound A forms B with sodium metal and again A forms C with PCl_5, but B and C form diethyl ether. Therefore 4,B and C are:

Answer»

`C_2H_5OH,C_2H_5ONa,C_2H_5Cl`
`C_2H_5OH,C_2H_5Cl,C_2H_5ONa`
`C_2H_5OH,C_2H_5Cl,C_2H_5Cl_2`
`C_2H_5Oh,C_2H_5Cl,C_2H_5ONa`

ANSWER :A
Discussion