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.

C_(6)H_(5)CHO+CH_(2)COCH_(3)overset(OH^(-))toC_(6)H_(5)CH(OH)CH_(2)CH_(2)COCH_(2)toC_(6)H_(5)CH=CHCOCH_(3) This reaction is known as

Answer»

ALDOL condensation
Cross aldol condensation
The Claisen-Schmidt reaction
none of these

Answer :C
Discussion
2.

C_(6)H_(5)CHO + HCN rarr C_(6)H_(5)CH(CN)OH. The product would be

Answer»

Benzioncondensation
Claisen - SCHIMDT condensation
Perkin's reaction
Cannizzaro's reaction

Answer :B
Discussion
3.

C_6H_5CHO+C_6H_5COCH_3overset(OH^(-) ,293K) to X, IUPAC name of cross condensation product X is

Answer»

Benzalacetophenone
1,3- diphenylpropanone-1
1,3 - diphyenylprop -2-en -1- ONE
1,3 -DIPHENYLPROP -1- en-3-one

ANSWER :C
Discussion
4.

C_6H_5CH=CHCHO overset(X)to C_6H_5CH=CHCH_2OH In the above sequence X can be :

Answer»

`H_2//Ni`
`NaBH_4`
`K_2Cr_2O_7//H^+`
Both (a) and (b)

Solution :`NaBH_4` SELECTIVELY reduces the aldehyde group to ALCOHOL without AFFECTING DOUBLE bond in a organic compound. So, X is `NaBH_4`
Discussion
5.

C_6H_5CH_3overset(Oxidation)rarroverset(NaOH)rarrBoverset(Sodalime)rarr______

Answer»


ANSWER :`C_6H_6`
Discussion
6.

Write the products in the following: C_(6)H_(5)CH_(2)OH overset(HBr)to overset(KCN)to overset(H_(3)O^(+))underset(Delta)to

Answer»

`X : C_6H_5CH_2 CH_2Br, Y : C_6H_5CH_2CH_2CN, Z : C_6H_5CH_2CO_2H`
`X : C_6H_5CHO, Y : C_6H_5CH = CH - CH, Z : C_6H_5CH_2 CO_2 H`
`X : C_6H_5 CH_2 Br, Y : C_6H_5 CH_2 CN, Z : C_6H_5CH_2 CO_2H`
`X : C_6H_5CH_2 Br, Y : C_6H_5CH_2NC, Z : C_6H_5CO_2 H`

Answer :C
Discussion
7.

C_6H_5CH_2NH_2overset(HNO_2)(to)A overset((O))(to)B underset(HCl)overset(Zn"/"Hg)(to)C Identify A,B and C.

Answer»

Solution :`{:(C_6H_5NH_2overset(HNO_2)(to)C_6H_5CH_2OH overset((O))(to)C_6H_5CHO UNDERSET(HCl)overset(Zn"/"Hg)(to)C_6H_5-CH_3),(" BENZYL amineBenzyl alcohol(A)Banzaldehyde(B)CLEMMENSEN reductionToluene(C ) "):}`
A-Benzyl alcohol, B-Benzaldehyde , C- Toluene.
Discussion
8.

C_(6)H_(5)CH_(2)Cl + X rarr C_(6)H_(5)CH_(2) NH_(2) + Y The compounds X and Y are

Answer»

`"HNO"_(3)` and HCL
`NH_(3)` and HCl
`HNO_(2) and H_(2)O`
none of these

Answer :B
Discussion
9.

C_6H_5Br+Mg overset( "dry ether") to A overset(CO_2) to B overset( H_3O^(+)) to C. IUPAC name of C is

Answer»

BENZENE CARBOXYLIC ACID
Benzene carbaldehyde
Pehylomethanol
Pheny ETHANOIC acid

ANSWER :A
Discussion
10.

[(C_6H_5)_2Pd(SCN)_2] and [9C_6H_5)_2Pd(NCS)_2] are __________ isomers.

Answer»

linkage
coordination
ionization
geometrical

Answer :A
Discussion
11.

C_(6)H_(5).^(14)COOH on heating with Na_(2)CO_(3) releases

Answer»

`CO_(2)`
`.^(14)CO_(2)`
`CO`
none of these

Solution :`C_(6)H_(5).^(14)COOH+NaHCO_(3)to C_(6)H_(5).^(14)COONa+CO_(2)+H_(2)O`
Discussion
12.

[(C_6H_5)_2Pd(SCN)_2] and [(C_6H_5)_2Pd(NCS)_2]are :

Answer»

LINKAGE ISOMERS
Co-ordination isomers
Ionisation isomers
GEOMETRICAL isomers

Answer :A
Discussion
13.

C_(6)H_(5)-O-R when treated with hydrogen halide gives

Answer»

R - OX and `C_6H_5 - X`
R-X and `C_6H_5 - X`
R - OX and `C_6H_5 - OH`
R-X and `C_6H_5-OH`

ANSWER :D
Discussion
14.

C_(6)H_(5)^(11)COOH on heating with Na_(2)CO_(3) releases

Answer»

`CO_(2)`
`.^(14)CO_(2)`
`CO`
NONE of these

Solution :`C_(6)H_(5).^(14)COOH` on HEATING with `Na_(2)CO_(3)`
`C_(6)H_(5).^(14)COOH+Na_(2)CO_(3) overset(DELTA)toC_(6)H_(5).^(14)COONa+CO_(2)+H_(2)O`
Discussion
15.

C_6H_5-overset(OH)overset(|)(CH)-CH_3can be prepared form which of the following combinations

Answer»

`C_6H_5-CHO and CH_3MgCl`
`C_6H_5MgBr and CH_3CHO`
`C_6H_5-OVERSET(O)overset(||)C-CH_3 and NaBH_4`
All of these

Answer :D
Discussion
16.

C_(6)H_(5)-O-CH_(3) is an exmaple of _________

Answer»

nitriles
mixed ETHER
SYMMETRICAL ether
ANHYDRIDE

ANSWER :B
Discussion
17.

C_(6)H_(5)-NH_(2)+CHCl_(3) + KOHnitrogencontaining compound+3KCl + H_(2)O. Thenitrogencontainingcompound.

Answer»

`C_(6)H_(5) -NH_(3) -CL`
`C_(6)H_(5)-CN`
`C_(2)H_(5)-NC`
`C_(2)H_(5)NH_(2)`

SOLUTION :It is a carbylaminereactiongivesisocyanide`(C_(6)H_(5)NC)`.
Discussion
18.

C_6H_5-O-CH_3 can be named as

Answer»

phenoxy methane
phenetole
methoxy phenyl
methoxy benzene

Answer :D
Discussion
19.

C_(6)H_(5)-NH_(2) overset(NaNO_(2)//HCl)underset(0^(@)C)to A overset(CuCl_(2)//HCl)to B, is

Answer»

`C_(6)H_(5)CH_(3)`
`C_(6)H_(5)OH`
`C_(6)H_(6)`
`C_(6)H_(5)NH_(2)`

Solution :`A=C_(6)H_(5)-overset(+)N_(2)overset(-)Cl` (benzene DIAZONIUM CHLORIDE)
`B=C_(6)H_(5)-Cl` (chlorobenzene)
Discussion
20.

C_6H_5 - O - CH_2 - CH_3 is known is ……………………. .

Answer»

SOLUTION :PHENATOLE (or) ETHOXY BENZENE
Discussion
21.

C_(6)H_(5^(-))N_(2^(+))X^(-) is convertedintobenzeneby using

Answer»

`H_(3)PO_(2)`
`H_(3)PO_(3)`
`H_(3)PO_(4)`
`HPO_(3)`

Answer :A
Discussion
22.

C_(6)H_(5) has electron withdrawing inductive effect yet each ring of biphenyl. C_(6)H_(5)-C_(6)H_(5) is more reactive than benzene towards S_(E) reaction and chief products are ortho and para-isomer. Show how reactivity and orientation can be aC Counted for on the basis of reasonance.

Answer»


SOLUTION :N//A
Discussion
23.

C_6H_5CHO+CH_2 CH=CHCOoverset( overset(Oh^(-))toAthe product'A' is

Answer»

`C_6H_5 CH = UNDERSET(CH_2- CH_3 ) underset(|)C-CHO`
`C_6 H_5-CH=CH -CH=CH-CHO`
`C_6 H_5(CH=CH)_3 CHO`
`C_6 H_5CH =underset(CH_3) underset(|) C-CH_2CHO`

SOLUTION :`C_6 H_5- overset(O) overset(||)C-H+H_2-CH -CH -CH =CH -CHO to C_6 H_5-CH =CH -CH -CHO`
Discussion
24.

C_(6)H_(5)-CH=CHCHO overset(x)to C_(6)H_(5)CH=CHCH_(2)OH. In the above sequence X can be

Answer»

`H_(2)`/Ni
`NaBH_(4)`
`K_(2)Cr_(2)O_(7)//H^(+)`
Both (a) and (b)

Solution :`NaBH_(4)` and `LiAIH_(4)` attacks only carbonyl group and reduceit into alcohol group. They do not attack on DOUBLE BOND.
`underset("cinnamic aldehyde")(C_(6)H_(5)-CH=CHCHO)overset(NaBH_(4))to C_(6)H_(5)-underset("cinnamicalcohol")(CH=CH.CH_(2)OH)`
Discussion
25.

C_(6)H_(5)-CH=CHCHO overset((X))rarr C_(6)H_(5)CH=CH_(2)OH In the above sequence (X) can be:

Answer»

`H_2//Ni `
`NaBH_4`
`K_2Cr_2O_7//H^(+)`
`H_2//Pd`

ANSWER :B
Discussion
26.

C_(6)H_(5)-CH=CH-CHO is

Answer»

Benzaldehyde
Salicylaldehyde
Cinamaldehyde
None of these.

Answer :C
Discussion
27.

C_(6)H_(5)-C-=C-CH_(3)underset(H_(2)SO_(4))overset(HgSO_(4))rarrA

Answer»



`C_(6)H_(5)-underset(OH)underset(|)C=CHCH_(3)`
`C_(6)H_(5)-CH=underset(OH)underset(|)C-CH_(3)`

Solution :N//A
Discussion
28.

C_(6)H_(15)O_(6)(P) underset(Zn, H_(2)O)overset(O_(3))rarrC_(4)H_(8)O_(4)(Q) underset("reagent")overset("Molish")rarr Violet colour ring Structure of P connote be :

Answer»

`UNDERSET(OH)underset(|)(CH_(2))-underset(OH)underset(|)(CH)-underset(OH)underset(|)(CH)-CH=CH-underset(OH)underset(|)(CH)-underset(OH)underset(|)(CH)-underset(OH)underset(|)(CH_(2)`)`

`underset(OH)underset(|)(CH_(2))-underset(OH)underset(|)(CH)-underset(OH)underset(|)(CH)-CH=CH-underset(OH)underset(|)(CH)-underset(OH)underset(|)(CH)-CH=O`
`HOOC-CH_(2)-underset(OH)underset(|)(CH)-CH=CH-underset(OH)underset(|)(CH)-CH_(2)-COOH`

Solution :Carbohydrates (`alpha`-hydroxy carbonyl) gives positive TEST with molish reagent.
Discussion
29.

C_6H_12(A) has two types of alkenes that can be reduced to one type of C_6H_14(B) . B is

Answer»




SOLUTION :
Discussion
30.

C_(60)contains 'x'five memberedrings & 'y'six memebered Then :

Answer»

x= 20
y =12
x+y= 32
x = 6, y = 5

Answer :C
Discussion
31.

C_6 H_5CH_3 to C_6H_5CHO . Which one of the following reagents are not suitable for the conversion ?

Answer»

TREATING with alkaline `KMnO_4 ` and HEATING
reaction with ` CrO_2 Cl_2 ` followed by hydrodysis.
reaction with `CrO_3"in"(CH_3 CO)_2 O`followed by hydrosis.
both (2) and (3)

ANSWER :A
Discussion
32.

C_6H_5NH_2 underset(0-5^@C)overset(NaNO_2 + HCl)(rarr)A overset(KI)(rarr)B + C uarr.Here B and Care

Answer»

`C_6H_5I, N_2`
`C_6H_5,O_2`
`C_6 H_5 I,I_2`
`C_6 H_5 CH_2 I,N_2`

ANSWER :A
Discussion
33.

C_6H_2N_2Cl overset(-CuCl//HCl)(rarr)C_6H_5Cl + N_2 is called

Answer»

Etard REACTION
SANDMEYER reaction
Wurtz-Fittig's reaction
PERKIN's reaction

Answer :B
Discussion
34.

C_6 H_5 N_2 Cl + CuCN to C_6 H_5 CN + N_2 + CuCl is:

Answer»

Balz-Schiemann reaction
Gattermann reaction
Simonini reaction
Sandmeyer reaction

Answer :D
Discussion
35.

C_6 H_5 Mg Br underset((2) H_3 O^+)overset((1) CO_2)to P In the above reaction , product P is

Answer»

Phenol
Benzoic ACID
BENZALDEHYDE
BENZOPHENONE

ANSWER :B
Discussion
36.

C_6 H_5 COOCH_3 + ""^(18)OH to A + B In the above reaction , products A and B respectively are

Answer»

`C_3 H_5 OVERSET(O)overset(||)C-O^- + CH_3 O^(18) H`
`C_2 H_5-overset(O^(18))overset(||)C-O^(-18)+ CH_3OH`
`C_2 H_5 - overset(O)overset(||)C-O^(-18) + CH_3 OH`
`C_2 H_5 -overset(O^(18))overset(||)C-barO^ + CH_3OH`

ANSWER :C
Discussion
37.

C_(5)underset((A))(H_(13))N+HNO_(2)rarrC_(5)H_(12)O(3^(@) "alcohol") Hence (A) gives

Answer»

carbylamine reaction
diazonium salt
Hofmann MUSTARD oil
Zerewitinoff's reaction.

Solution :It is `1^(@)` amine only which gives alcohol when TREATED with `NaNO_(2)` and HCI. This `1^(@)` amine gives all the GIVEN reaction.
Discussion
38.

C_6H_5COOH underset(2.Delta)overset(1.NH_3)to P overset(NaOBr)to Q underset("2. heat to " 460K)overset(1. Conc. H_2SO_4)to 'R' 'R' is

Answer»

o-bromo sulphanilic ACID
SULPHANILAMIDE
sulphanilic acid
p-bromo sulphanilainide

SOLUTION :
Discussion
39.

C_(5)H_(13)N reacts with HNO_(2) to give an optically active compound -The compound is

Answer»

pentan-1-amine
pentan-2-amine
N,N-dimethylpropan -2-amine
N-methylbutan-2-amine

Solution :`CH_(3)-CH_(2)-CH_(2)-underset(CH_(3))underset(|)overset(H)overset(|)(C)-NH_(2)overset(HONO)(to)CH_(3)-CH_(2)-CH_(2)-underset(CH_(3))underset(|)overset(H)overset(|)(C)-OH`
Discussion
40.

C_5H_(13)N reacts with HNO_2 to given an optically active compound - The compound is

Answer»

PENTAN - 1 -AMINE
pentan -2- amine
N,N - dimethylpropan -2- amine
N-methylbutan -2- amine

Solution :Denaturation makesproteinmoreactive
Discussion
41.

C_(5)H_(13)N reacts with HNO_(2) to give an optically active alcohol The compound is

Answer»

Pentan-1-amine
Pentan-2-amine
N,N-dimethylpropan-2-amine
N-methylbutan-2-amine

Solution :`HNO_(2)` reacts to give an alcohol means the COMPOUND is primary amine `C_(3)H_(13)N` is thus `C_(5)H_(11)NH_(2)`.
Optically active alcohol means `C_(5)H_(11)`-segment CONTAINS a chiral CARBON.
`CH_(3)-CH_(2)-CH_(2)-underset(CH_(3))underset(|)overset(H)overset(|)(C^(*))-NH_(2)`
Discussion
42.

C_(5)H_(11)Cl by Wurtz reaction forms 2, 2, 5, 5 tetramethyl hexane as the main product. Hence C_(5)H_(11)Cl is.

Answer»

2-methyl , 1-chlorobutane
2-2 DIMETHYL, 1-chloropropane
both 'a' and 'B'
NONE of these

Solution :`2CH_(3)- OVERSET(CH_(3))overset(|)underset(CH_(3)) underset(|)(C)-CH_(2) Cl +2Na overset("DRY ether") to2NaCl+CH_(3)-overset(CH_(3)) overset(|) underset(CH_(3)) underset(|)(C)-CH_(2)-CH_(2)- overset(CH_(3)) overset(|) underset(CH_(3)) underset(|)(C)-CH_(3)`
2,2,5,5-tetramethyl hexane
Discussion
43.

C_(5)H_(10)overset(H_(2)//Ni)rarr(X) overset(Cl_(2)//hv)rarr 3 monochloro structural isomers for compound C_(5)H_(10) how many pairs of geometrical isomers are possible

Answer»

1
2
3
None

Answer :A
Discussion
44.

C_5H_10O represents

Answer»

ALDEHYDES
KETONES
ALCOHOLS
acids

Answer :C
Discussion
45.

C_(5)H_(10) (A) can show Cannizzaro's reaction. (A) on treatment with Al(OC_(2)H_(5))_(3), forms C_(10)H_(20)O_(2) (B) which on hydrolysis gives acid (C) and alcohol (D). Compounds (A), (B) and (C) each on reaction with LiAlH_(4) is converted to alcohol (D). Identify (A), (B), (C) and (D). Give the reactions involved.

Answer»

Solution :SINCE, (A) gives Cannizzaro's REACTION HENCE, it should not have any `alpha`-HYDROGEN.
Discussion
46.

C_5H_(10) overset(A)to C_5H_(12)O overset(B) to CH_3(CH_2)_3CHO,A and B in the above reactions are _____.

Answer»

conc. `H_2SO_4`, hydrolysis , Na-Hg/`H_2O`
alc. `KOH, K_2Cr_2O_7+`DIL. `H_2SO_4`
cold conc. `H_2SO_4` (hydration),acidified `K_2Cr_2O_7+ "dil." H_2SO_4`
alc. KOH, RANEY NI

Answer :C
Discussion
47.

C_(5) H_(13) N reacts with HNO_(2) to give an optically active compound . The compound is ………

Answer»

pentan-1- amine
pentan-2-amine
N, N-dimethylpropan-2-amine
N-methylbutan-2-amine

Solution :N-methylbutan-2-amine
`CH_(3) - CH_(2) - CH_(2) -overset(H)overset(|)underset(CH_(3))underset(|)(C)-NH_(2) overset(HONO)(to) CH_(3) - CH_2 - CH_(2) - overset(H)overset(|)underset(CH_(3))underset(|)(C)-OH`
Discussion
48.

C_(4)H_(9)X shows

Answer»

CHAIN ISOMERISM
POSITION isomerism
optical isomerism
all of these

Answer :D
Discussion
49.

C_(4)H_(9)X represents

Answer»

`1^(@)AND2^(@)R-X`
`1^(@)and3^(@)RX`
`2^(@)and3^(@)RX`
`1^(@),2^(@),3^(@)RX`

Answer :D
Discussion
50.

C_(4)H_(8)O(A) changes to 3^(@) alcohol by reduction with LiAlH_(4). Thus, A is

Answer»

`CH_(3)overset(O)overset(||)C CH_(2)CH_(3)`
`CH_(3)CH_(2)CH_(2)CHO`

Solution :
Discussion