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.

Complete the following chemical equation - HgCl_(2)+PH_(3)rarr

Answer»

<P>

Solution :`3HgCl_(2)+2PH_(3)RARR Hg_(3)P_(2)+6HCL`
Discussion
2.

Complete the following chemical equation : XeF_4 + H_2O rarr

Answer»

SOLUTION :`6XeF_4 + 12H_2O RARR 4Xe + 2XeO_3 + 24HF + 3O_2`
Discussion
3.

Complete the following cheical equation : XeF_4 + H_2O rarr

Answer»

SOLUTION :`6XeF_4 + 12H_2O RARR 4Xe + 2XeO_3 + 24HF + 3O_2`
Discussion
4.

Complete the following chain of reactions:

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SOLUTION :
Discussion
5.

Complete the following CH_(3)COCH_(3) + HI overset("Red" P//423 K)rarr

Answer»

SOLUTION :`CH_(3)CH_(2)CH_(3)` is FORMED.
Discussion
6.

Complete the following : CH_(3)Cl+ KCN to ? underset(H_(2))overset(Ni)to ? underset(?)overset(HNO_(2))larr

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Solution :`CH_(3)-Cl+KCN to CH_(3)CN+ KCl`
`CH_(3)CN+H_(2) OVERSET(NI) to CH_(3)CH_(2)NH_(2)`
`CH_(3)CH_(2)NH_(2) overset(HNO_(2))to CH_(3)CH_(2)OH+ N_(2)+H_(2)O`
Discussion
7.

Complete the following: CH_3-C-=C-CH=CH-CH_3overset(NBS//hv)rarr(A)overset(H_2//Pd-BaSO_4)rarr(B)overset((i)O_3)underset((ii)H_2O //Zn)rarr(C)+(D)+(E)

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SOLUTION :
Propargylic POSITION is more REACTIVE than alkylic position or NBS/hv.
Discussion
8.

Ethers are generally non-reactive compound. One of the important reactions of ethers is the action of HI. Anisole overset(HI)rarr A+B Identify A and B.

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SOLUTION :
Discussion
9.

Complete the following by providing (A),(B),(C)and (D) : (i) CH_(3)CH_(2)CH_(2) OH overset(PBr)(to) (A) overset(alc.KOH)underset(Delta)(to) (B) overset(HBr)(to)(C) overset(NH_(3))(to) (D) (ii) CH_(3)CH_(2)CH_(2)I overset(alc.KOH)underset(Delta)(to)(A)overset(H^(+)//H_(2)O)(to) (B)overset(SOCI_(2))(to)(C) overset(H)underset(LiAIH_(4))(to) (D)(iii) CH_(3)CHBrCH_(3) overset(alc.KOH)underset(Delta)(to) (A) overset(HBr)underset("Peroxide")(to) (B) overset(Nal)underset("Acetone")(to) (C) overset(H)underset("Ether")(to) (iv) CH_(3)CH_(2)CH=CH_(2) overset(NBS)underset("Light")(to) (A) overset(alc. KOH)underset(Delta)(to)(B) overset(HBr)(to)(C) (v) CH_(3)CH_(2)MgBroverset(CH_(3)CHO //H_(2)O)(to) (A) overset(HBr)(to)(B) overset(alc.KOH)underset(Delta)(to)(C) (A) overset(NH_(3))(to) (B) overset(CHCI_(3)+KOH(alc.))(to)(C)overset(Na)underset(C_(2)H_(5)OH)(to) CH_(3)-underset(CH_(3))underset(|)CH-NHCH_(3) (viii) CH_(3)CH_(2)Br overset((i)(CH_(2))_(6)N_(4))underset((ii)H_(2)O //H^(+))(to) (A) overset(NaOH)(to)(B) overset((i)O_(3))underset((ii)Zn//HOH)(to)(A) +(C) overset(conc.NaOH)(to)(D)

Answer»

Solution :`(i)A CH_(3)CH_(2)CH_(2)BR , (B) CH_(2)CH=CH_(2),(C) CH_(3)CHBrCH_(3) , (D) CH_(3) CHNH_(2) CH_(3)`
`(ii) (A) CH_(3)CH=CH_(2) ,(B) CH_(3)CHOHCH_(3) , (C ) CH_(3)CHCICH_(3) (D) CH_(3)CH_(2)CH_(3)`
`(III) (A) CH_(3)CH=CH_(2) , (B) CH_(3)CH_(2)CH_(2)Br , (C)CH_(3)CH_(2)CH_(2) I , (D) CH_(3)CH_(2)CH_(2)Mgl.`
`(iv) (A) CH_(3)CH(Br)CH=CH_(2) , (B) CH_(2) =CH-CH=CH_(2), (C)CH_(3)CH(Br)CH=CH_(2) " and " CH_(3)CH=CH-CH_(2)Br`
`(A) CH_(3)CH_(2)CH(OH)CH_(3) , (B) CH_(3)CH_(2)CH(Br)CH_(3) , (C) CH_(3)CH=CHCH_(3)`
`(v i) (A) CH_(3)-underset(CH_(3))underset(|)CH -CI , (B) CH_(3)-underset(CH_(3))underset(|)CH -NH_(2) , (C) CH_(3)-underset(CH_(3))underset(|)CH-NC`
Discussion
10.

Complete the following by identifying (A) to (F). CuSO_(4)5H_(2)O overset(100^(@)C)(rarr) (A) overset(230^(@)C)(rarr) (B) overset(800^(@)C)(rarr)(C)+(D)

Answer»


ANSWER :`A=CuCO_(4), H_(2)O, B=CuSO_(4), C=CuO, D=SO_(3), E=Ag, F=NO_(2)`
Discussion
11.

Complete the following: b.

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SOLUTION :
Discussion
12.

Complete the following as missing starting material , reagent or products : .

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SOLUTION :.
Discussion
13.

Complete the following as missing starting material , reagent or products : .

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<P>

Solution :`B_(2)H_(6)//THF,H_(2)O_(2)//OH^(-),P C C ` (HYDROBORATION).
Discussion
14.

Complete the following as missing starting material , reagent or products : .

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SOLUTION :.
Discussion
15.

Complete the following acid-base reactions and name the products: (i) CH_(3)CH_(2)CH_(2)NH_(2)+HCl to (ii) (C_(2)H_(5))_(3)N+HCl to

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SOLUTION :
Discussion
16.

Complete the following acid-base reactions and name the products : (i) CH_(3)CH_(2)CH_(2)NH_(2)+HCl rarr"(ii) "(C_(2)H_(5))_(3)N+HCl rarr

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SOLUTION :
Discussion
17.

Complete the following acid-base reactions and name the products : (i) CH_(3)CH_(2)CH_(2)NH_(2) + HCI rightarrow (ii) (CH_(3)CH_(2))_(3)N + HCI rightarrow

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Solution :(i) `CH_(3)CH_(2)CH_(2)N^(+)HCI^(-1) `(n-propyl ammonium CHLORIDE)
(ii)` (CH_(3)CH_(2))_(3)-N^(+) HCI^(-)rightarrow` (Triethyl ammonium chloride)
Discussion
18.

Complete the following acid-base reactions and name the products CH_3CH_2CH_2NH_2+HCl rarr

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SOLUTION :
Discussion
19.

Complete the following acid-base reactions and name the products : CH_3CH_2 CH_2 NH_2 +HCl to

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SOLUTION :`CH_3 CH_2 CH_2 NH_2+HClto UNDERSET("n-Propylammonium CHLORIDE ")(CH_3 CH_2 CH_2 OVERSET(+ )NH_3 CL^(-))`
Discussion
20.

Complete the following a. MnO_(4)^(2-)+ H^(+) to ? b. C_(6)H_(5)CH_(3)underset(KMnO_(4))overset("acidified")to ? c. MnO_(4)^(-)+ Fe^(2+) to ? d. KMnO_(4) underset("Red hot")overset(Delta)to ? e. Cr_(2)O_(7)^(2-)+ I^(-)+ H^(+) to ? f. Na_(2)Cr_(2)O_(7) + KCl to ?

Answer»

Solution :a.`underset(underset("ion")("Manganate"))(3MnO_(4)^(2-))+ underset(underset("medium")("Acid"))(4H^(+)) to underset(underset("ion")("Permanganate"))(2MnO_(4)^(-))+ underset(underset("dioxide")("Manganese"))(MnO_(2))+ H_(2)O`
B. `underset("(Oxidation)")(underset("Toluene")(C_(6)H_(5)CH_(3))underset(KMnO_(4))overset("acidified")rarrunderset("Benzoic acid")(C_(6)H_(5)COOH))`
c.`underset("(Oxidation)")(underset(underset("ion")("Permanganate"))(2MnO_(4)^(-))+ underset(underset("ion")("Ferrous"))(10 Fe^(2+)) + 16H^(+) to 2Mn^(2+)+ underset(underset("ion")("Ferric"))(10Fe^(3+))+ 8H_(2)O)`
d. `underset(underset("Permanganate")("POTASSIUM"))(KMnO_(4)) underset("Red hot")overset(Delta)to underset(underset("Manganate")("Potassium"))(K_(2)MnO_(4))+ underset(underset("dioxide")("Manganese"))(MnO_(2))+ O_(2)`
e. `underset("(oxidation)")(Cr_(2)O_(7)^(2-)+ underset("Iodine ion")(6 I^(-))+ 14H^(+) to 2Cr^(3+)+ underset("Iodine")(3I_(2))+7H_(2)O)`
f. `underset("Sodium DICHROMATE")(Na_(2)Cr_(2)O_(7)) + 2KCl tounderset("Potassium dichromate")(K_(2)Cr_(2)O_(7))+ 2Nacl`
Discussion
21.

Complete the following acid-base reactions and name the products :(C_2 H_5 )_3N +HCl to

Answer»

SOLUTION :`(C_2 H_5)_3 N +HCl tounderset("Triethylammonium chloride ")((C_2 H_5)_3 OVERSET(+)(NHCl^(-))`
Discussion
22.

Complete the following acid-base reactions and name the products (C_2H_5)_3N+HCl rarr

Answer»

SOLUTION :
Discussion
23.

Complete the following acid-base reactions and name the products: (i)CH_(3)CH_(2)CH_(2)NH_(2)+HCl to""(ii)(C_(2)H_(5))_(3)N+HCl to

Answer»

Solution :`(C_2 H_5)_3 N +HCL tounderset("Triethylammonium CHLORIDE ")((C_2 H_5)_3 overset(+)(NHCL^(-))`
Discussion
24.

Completethe following a . MnO_(4)^(2+)+ H^(+) to ? b . C_(6) H_(5) CH_(3)overset(" acidified" ) underset(KmnO_(4))(to) c .MnO_(40^(-))+ Fe^(2+)to ? d. KMnO_(4)underset( "Redhot" )overset( Delta )(to) e . Cr_(2) O_(7)^(2-)+ I^(-)H^(+) to ? F . Na_(2)Cr_(2)O^(+)KCI to

Answer»

Solution :`a . 3MnO_(4)^(2-) + 4H^(+) to `
`b.C_(6) H_(5)CH_(3) + 2KNnO_(4)underset("acidified ") overset(KMnO_(4))(to)`
`c . MnO_(4) ^(-)+ 5Fe^(2+)overset( SH^(+))(to) 5Fe^(3+)+ Mn^(2+)+ 4H_(2) O`
` d. 2KMnO_(4)underset(" Red hot ")oveset(Delta )(to)K_(2) MnO_(4)+MnO_(2) +O_(2)`
e.`Cr_(2) O_(7)^(2-)+ 6I^(-)14 H^(+) (to) `
`2 Cr^(3+)+ 3I^(2) +7H_(2) O`
f`Na_(2) Cr_(2)O_(7) + 2KCIto K_(2) Cr_(2) O_(7) +2NaCI`
Discussion
25.

Complete the following: a. b. c. d. e. f. (H) + (I) overset (Aq. KOH) rarr J g. h. PhH + C_(2)H_(5)CI overset (AICI_(3)) rarr A overset (NBS) rarr B overset (AIc. KOH) rarr C overset (ArCO_(3)H) rarr D overset (1. PhMgBr) underset (2. H_(3)O^(+)) rarr E

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Solution :a.
b.
c.
d.
e.
f.H + I `OVERSET (AQ. KOH) rarr` 18-Crown-6
(Total atoms = 18,O atoms = 6,C atoms = 12)
G.
Discussion
26.

Complete the following : a. b. Give the products of the following by application of Hofmann's exhaustive methylation and elimination : .

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SOLUTION :` a. (##KSV_CHM_ORG_P2_C15_S01_012_S01.png" WIDTH="80%">
B. ` (##KSV_CHM_ORG_P2_C15_S01_012_S02#)`
i. ` (##KSV_CHM_ORG_P2_C15_S01_012_S03.png" width="80%">
Discussion
27.

Complete the following: a. b. c. d. e. f. g. h. PhCHO + Cl_(2) overset("No catalyst")rarr(A) i. j. PhCHO+(C_(2)H_(5)CO)_(2)O overset(C_(2)H_(5)COONa)rarr A k. l. m. n. o. p. q. r. s. PhCOCH_(3)+SeO_(2)rarr (A) t. PhCH=CH-overset(O)overset(||)C-Ph+KCN overset(CH_(3)COOH)rarr (A) u. Ph-underset(CN)underset(|)CH-overset(O)overset(||)C-CH_(3) overset((i)H_(3)O^(o+))underset((ii)Delta)rarr (A) v. w. Ph-overset(OH)overset(|)underset(Ph)underset(|)C-CH_(2)NH_(2) overset(HNO_(2))rarr (A) overset("Oxidation")rarr (B) x. PhCOPh+KOH rarr (A)+(B) y. z.

Answer»

Solution :a.
b.
C.
d. It involves 1,4-addition followed by tautomerisation.

e.
f.
g.
h. `A implies PhCOCI`
i.
j. Perkin reaction:

k.
l. Reimer-Tiemann reaction:
m.
n.
o.
p.
`(B) rArrunderset(("Pinacol) (Benzopinacol"))(Ph-underset(OH)underset(|)overset(Ph)overset(|)(C)-underset(OH)underset(|)overset(Ph)overset(|)(C)-Ph)`
Q. Cross Cannizzaro reaction:

(B) `implies HCOOK`
R. Fridel-Crafts reaction: Acetylation `(ZnCI_(2)+HCI)` (Lewis acid).

s. `SeO_(2)` oxidises active methylene group to carbonyl group.
`[(A) implies PhCOCHO)]`
t. `CH_(3)COOH+KCN rarr HCN+CN_(3)COOK`. The nucleophilic 1,4-addition takes place.

u.
v. Fries MIGRATION of isopropyl group:

w.
x. (A) `implies PhCOOK, (B) implies`
y.
z. Intermolecular Cannizzaro reaction:

Discussion
28.

Complete the following:

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SOLUTION :
Discussion
29.

Complete the following:

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SOLUTION :
Discussion
30.

Complete the following:

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SOLUTION :
Discussion
31.

Complete the following : (1)._(7)N^(14)+ ._(2)He^(4)rarr ._(8)O^(17) + ......"", (2)._(92)U^(235)+ ._(0)n^(1)rarr ._(55)A^(142) +. _(37)B^(92)+ ...... (3)._(29)Cu^(53)rarr ._(28)Ni ^(53) + ......,

Answer»

Solution : (1)`._(7)N^(14)+ ._(2)He^(4)rarr ._(8)O^(17) + ._(1)H^(1) ""`, (2)`._(92)U^(235)+ ._(0)n^(1)rarr ._(55)A^(142) +. _(37)B^(92)+ 2 ._(0)n^(1)`
(3)`._(29)Cu^(53)rarr ._(28)Ni ^(53) + ._(+1)e^(0) `,
Discussion
32.

Complete the following: 2MnO_(4)^(-) (aq) + 5H_(2)O_(2)(aq) rarr 2Mn^(2+) + 8 H_(2)O+ .....

Answer»

Solution :`2MnO_(4)^(-)+ 5H_(2)O_(2)(aq)+6H^(+) rarr 2MN^(2+) + 8 H_(2)O+ 5O_(2)`
Discussion
33.

Complete the following:

Answer»

Solution :`(B)IMPLIES Me (C-=C)_(3) CHOHCH=CH_(2)`,
`(C )implies Me (C-=C)_(3)CH=CHCH_(2)OH`.
`NaBH_(4)` reduces only `(CO)` group and the resulting alcohol undergoes ALLYLIC rearrangement to give a more stable alcohol (in which there is increased coniugating), e.g.,
`Me(C-=C)_(3) CHOHCH=CH_(2)`
`{:darr{:((i),H^(o+),,,),((ii),-H_(2)O,,,):}`

b. Under these conditions, the `(C=C)` bond is reduced preferenitally.

c. Ni is an extremely efficient catalyst for the hydrogenation and reduces both `(C=C)` bond to


e. LAH reduces

to `(-CH_(2)OH)` and also reduces `(C=C)` bond when the `(PH)` group is attached to the beta-position of the `(C=C)` bond.

Discussion
34.

Complete the following 2HCHO + NaOH rarr CH_(3)CHO + H_(3) overset(Pd//BaSO_(4))rarr

Answer»

SOLUTION :(i) `CH_(3)OH + HCOONA` , (II) `CH_(3)OH`
Discussion
35.

Complete the following :

Answer»


ANSWER :`A=C_(6)H_(5)CHO`, BASE B=` `(##ALN_CHM_C09(II)_E01_651_A01##)`
Discussion
36.

Complete the following -

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SOLUTION :N//A
Discussion
37.

Complete the following : .

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SOLUTION :.
Discussion
38.

Complete the following .

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SOLUTION :.
Discussion
39.

Complete the following : .

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SOLUTION :.
Discussion
40.

Complete the following : .

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SOLUTION :` (##KSV_CHM_ORG_P2_C15_E01_017_S01.png" width="80%">`(HNO_(2)` is WRITTEN as `O=N-OH,CH_(3)` is active group, LIKE aldol)
.
Discussion
41.

Complete the following :

Answer»

Solution :a.(B) is `1^(@)` alcohol, with 3C, and G.R. CONTAINS 2C-, so (I) is `(CH_(2) = O)` (METHANAL).
b.(B) is `1^(@)` alcohol with 3C, and GR. Contains 1C, so (II) is (ethylene oxide).
c.(D) is `3^(@)` alcohol with 6C, and GR. contains IC, so (III) is ketone with 5C.
So (III) is `overset ((Me--CH_(2)--CH_(2)--CO--Me)) underset (54321)` (prntan-2-one) or `MeCH_(2)CH_(2)COMe`.
d.(F) is `1^(@)` alcohol with 1C more than GR. (E), so (IV) is `(CH_(2) = Q)` (methanal).
e. (H) is `1^(@)` alcohol with 5C, and GR. contains 3C, so (V) is (ethylene oxide).
f.(H) is `1^(@)` alcohol with 5C, and G.R. contains 4C, so (VI) `(CH_(2) = O)` (methanal or formaldehyde).
Discussion
42.

Complete the follosing: .

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SOLUTION :
Discussion
43.

Complete the following equations: CH_3COONaunderset(Delta)overset(NaOH . CaO)to

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SOLUTION :`CH_(3)COONA underset(DELTA)overset(NaOH&CaO)toCH_(4)+Na_(2)CO_(3)`
Discussion
44.

Complete the equation : XeF_2 + PF_5 to

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SOLUTION :`XeF_2 + PF_5 to [XEF]^(+)[PF_6]^(-)`
Discussion
45.

Complete the equation : [Fe(H_(2)O)_(6)]^(2+)+NO rarr

Answer»

Solution :`[FE(H_(2)O)_(6)]^(2+)+NOrarr[Fe UNDERSET("Dark brown")((H_(2)O)_(5))NO]^(2+)+H_(2)O`
Discussion
46.

Complete the equation : [Fe(H_(2)O)_(6)]^(2+) + NO rarr

Answer»

Solution :NO reduces `FE^(2+)` to `Fe^(+)` and itself gets oxidised to nitrosonium ion `(NO^(+))`. The two SPECIES then combine to form a brown complex.
`[Fe(H_(2)O)_(6)]^(2+)(aq) + NO(g) RARR underset(("Brown complex"))underset("Pentaaquanitrosonium IRON (I)")([Fe^(+)(H_(2)O)_(5)NO^(+)](aq)) + H_(2)O(l)`
Discussion
47.

Complete the equation : CH_3CH_2Br +KOHrarr _____+H_2O + _____.

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SOLUTION :`CH_2=CH_2` , KBR
Discussion
48.

Complete the equation and name the reaction: R-overset(O)overset(||)C-CH_(3)overset(NaOH)rarr

Answer»

SOLUTION :`R-overset(O)overset(||)C-CH_(3)+NaOC l rarr R-overset(O)overset(||)C-ON a+CH_(3)Cl_(3)`
This reaction is known as HALO form reaction.
Aldehydes and ketones having at least one methyl keto group are oxidised by sodium hypohalite to sodium SALTS of carboxylic acids with one carbon atom less than that of the PARENT compound.
The methyl group is converted to haloform. This reaction is called haloform reaction.
Discussion
49.

Complete the equation

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SOLUTION :
Discussion
50.

Complete the equation.

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SOLUTION :
Discussion