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.

How willyou convert : Methanamine into ethanamine

Answer»

Solution :STEPS involved in the different conversions are given below :
`UNDERSET("Methanamine")(CH_(3)NH_(2)) underset(underset(273-278K)(NaNO_(2)//HCl))overset(HONO)(rarr) underset("Methanol")(CH_(3)OH) overset(P//I_(2))(rarr)CH_(3)I overset(KCN)(rarr)CH_(3)CN underset("Alcohol")overset("Na")(rarr)underset("Ethanamine")(CH_(3)CH_(2)NH_(2))`
Discussion
2.

How will you convert isocyanides into cyanides ? Give one example .

Answer»

Solution :Conversion of isocyanides into cyanides :
When alkyl isocyanides are heated at `250^(@)C` , the change into more stable isomeric cyanides .
`underset("(Methyl isocyanide)") (CH_(3) - N -= C OVERSET(250^(@) C) (to) underset("(Methyl cyanide)") (CH_(3) - C -= N:)`
Discussion
3.

How will you convert (i)Propene to Propan-2-ol? (ii)Phenol to 2,4,6-trinitrophenol ?

Answer»

SOLUTION :(i)`UNDERSET("Propene")(CH_3CH)=CH_2+H_2SO_4underset("BOIL")overset(H_2O)toCH_3-underset("Propan-2-ol")underset(OH)underset(|)(CH_2)-CH_3`
Discussion
4.

How will you convert : (i) Propanoic acid to Ethanoic acid (ii) Nitromethane to Dimethylamine

Answer»

SOLUTION :(i) `C_(2)H_(5)COOH overset(NH_(3)) underset(Delta) to C_(2)H_(5)CONH_(2) overset (Br_(2)// KOH) to C_(2)H_(5)NH_(2) overset (HNO_(2))to CH_(3)CH_(2)OH overset([o])toCH_(3)CHO overset ([o])to CH_(3)COOH`
(ii) `CH_(3)NO_(2) overset(H_(2)//Ni)to CH_(3)NH_(2) overset (CH_(3)CI//KOH)to CH_(3)Nequiv CC overset(H_(2)//Ni) to CH_(3)-NH-CH_(3)`
Discussion
5.

How will you convert : (i) Phenol to cyclohexanol (ii) Benzyl chloride to benzyl alcohol iii) Anisole to phenol

Answer»

SOLUTION :
Discussion
6.

Howwill you convert ? (i) HC-=CH to H_3C-CH_2-CH_3

Answer»

SOLUTION :(i)`{:(HC-= CH underset(underset(NH_(3),-77^(@)C)(NaNH_(2),"liq"))overset("1 equlvalent")rarr HC -= C^(Θ) Na^(oplus) overset(CH_(3)I)rarr HC -= C- CH_(3)),(""underset(80^(@)C)(20% H_(2)SO_(4)) darr 1% HgSO_(4) ),(""H_(3)C - CH_(2) - CH_(3) underset("Conc."HCl)overset(Zn//Hg)rarr H_(3)C - CO - CH_(3)):}`
Discussion
7.

How will you convert (i) Ethanoic acid into methanamine. (ii) hexanenitrile into 1-aminopentane.

Answer»

Solution :(i) `underset("Ethanoic acid")(CH_(3)COOH) underset(-SO_(2),-HCl)OVERSET(SOCl_(2))to underset("ETHANOYL chloride")(CH_(3)COCl) underset(-NH_(4)Cl)overset(NH_(3)(excess))to underset("Ethanamide")(CH_(3)CONH_(2)) underset(("Hofmann bromamide reaction"))overset(Br_(2)//KOH)to underset("Methanamide")(CH_(3)NH_(2))`.
(II) `underset("Hexanenitrile")(CH_(3)(CH_(2))_(4)CN) underset("Hydrolysis")overset(H_(3)O^(+))to underset("Hexanoic acid")(CH_(3(CH_(2))_(4)COOH) underset(-SO_(2),-HCl)overset(SOCl_(2))to underset("Hexanonyl chloride")(CH_(3)(CH_(2))_(4)COCl) underset(-NH_(4)Cl)overset(NH_(3)(excess))to underset("Hexanamide")(CH_(3)(CH_(2))_(4)CONH_(2)) underset(("Hofmann bromamide reaction"))overset(Br_(2)//KOH)to underset("1-Aminopentane")(CH_(3)(CH_(2))_(4)NH_(2))`.
Discussion
8.

How will you convert : (i) Ethanoic acid into methanamine (ii) Hexane nitrile into 1-aminopentane (iii) Methanol into ethanoic acid (iv) Ethanamine into methanamine

Answer»

Solution :(i) `UNDERSET("ETHANOIC acid")(CH_(3)COOH)+ underset ("Hydrazoic acid")(HN_(3)) overset("Conc."H_(2)SO_(4)) underset("heat") to underset ("Methylamine")(CH_(3)NH_(2))+N_(2)+CO_(2)`
(ii)`underset ("Heance nitrile")(CH_(3)(CH_(2))_(4)CN) overset("Conc.HCI")underset("partial hydrolysis")to CH_(3)(CH_(2))_(4)CONH_(2) overset(Br_(2)//KOH)to underset("1-Aminopetane")CH_(3)(CH_(2))_(4)NH_(2)`
(iii)`underset("Methanol")(CH_(3)OH)overset(SOCI_(2))to (CH_(3)CI) overset("KCN(alc)")to CH_(3)CNoverset(H^(+)//H_(2)O)to underset("Ethanoic acid")(CH_(3)COOH)`
(iv)`underset("Ethanamine")(CH_(3)CH_(2)NH_(2)) overset(HNO_(3))underset(NaNO_(2)+ HCI) to CH_(3)CH_(2)OH overset(KMnO_(4)//H^(+))toCH_(3)COOH overset(NH_(4)OH)toCH_(3)COONH_(4) overset("heat")to CH_(3)COONH_(2) overset(Br_(2)//KOH) to CH_(3)NH_(2)`.
Discussion
9.

How will you convert : (i) Benzene into aniline, (ii) benzene into N,N-dimethylaniline, (iii) Cl-(CH_(2))_(4)-Cl to hexane-1,6-diamine?

Answer»

SOLUTION :
Discussion
10.

How will you convert (i) Benzene into aniline, "" (ii) Benzene into N, N-dimethylaniline, (iii) Cl-(CH_(2))_(4)-Cl into hexane-1, 6-diamine ?

Answer»

Solution :The CONVERSIONS are CARRIED out as under :

`underset("1, 4-Dichlorohexane")(Cl-(CH_(2))_(4))-Cl underset(-2KCl)OVERSET(2KCN(alc.), Delta)(rarr) underset("Hexane-1, 6-diamine")(NC-(CH_(2))_(4)-CN)underset(2.H_(3)O^(+))overset(1.LiAlH_(4)//"ETHER")(rarr)underset("Hexane-1, 6-diamine")(H_(2)N-(CH_(2))_(6)-NH_(2))`
Discussion
11.

How will you convert? (i) Acetic acid into ethane (ii) Acetic acid to ethyl alcohol (iii) Propanoic acid to 1-propanol (iv). Propanoic acid to lactic acid. (v) benzoic acid to 3-bromobenzoic acid (vi) Benzoic acid to benzaldehyde (vii) Benzoic acid to benzene (viii) Benzoic acid to benzyl alcohol. (ix) benzoic acid to benzyl ethanoate. (x) Benzoic acid to benzyl chloride (xi) Benzoly chloride to benzonitrile (xii) benzoic acid to benzamide (xiii) Benzamide to benzoic acid ltbr. (xiv) Acetaldehyde to ethyl acetamide (xv) Ethyl acetate to acetamide. (xvi) Acetamide to acetic acid.

Answer»

Solution :(IX). `UNDERSET("Benzoic acid")(C_(6)H_(5)COOH) underset("DRY ether") overset(LiAlH_(4))to underset("Benzyl ALCOHOL")(CH_(6)H_(5)CH_(2)OH) underset("PYRIDINE")overset(CH_(3)COCl)to underset("Benzyl ethanoate")(C_(6)H_(5)CH_(2)OCOCH_(3))`.
Discussion
12.

How willyou convert : Hexanenitrile into 1-aminopentane

Answer»

Solution :Steps INVOLVED in the different conversions are given below :
`underset("Hexanenitrie")(CH_(3)(CH_(2))_(4)CN) underset("HYDROLYSIS")overset(H^(+)//H_(2)O)(RARR) underset("Hexanoic ACID")(CH_(3)(CH_(2))_(4)COOH) underset(-SO_(2)-HCl)overset(SOCl_(2))(rarr) underset("Hexanoylchloride")(CH_(3)(CH_(2))_(4)COCl) underset(-NH_(4)CL)overset(NH_(3)"(excess)")(rarr) CH_(3)(CH_(2))_(4)CONH_(2) overset(Br_(2)//KOH)(rarr)underset("1-Aminopentane")(CH_(3)(CH_(2))_(4)NH_(2))`
Discussion
13.

How will you convert : (i) 3- methylaniline to 3- nitrotoluene (ii) Aniline to 1,3,5-tribromobenzene

Answer»

SOLUTION :
Discussion
14.

How will you convertglycerol intoacrolein ?

Answer»

Solution :Whenglycerol reacts with`KHSO_(4)` DEHYDRATION takesplaceand the PRODUCT formedwill be ACROLEIN.
Discussion
15.

How will you convert glucose into fructose ?

Answer»

SOLUTION :
Discussion
16.

How will you convert fructose into glucose ?

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SOLUTION :
Discussion
17.

How will you convert following conversion?(i) Acetic acid into acetic anhydride (ii) Methyl acetate into ethyl acetate (iii) Methyl acetate into acetamide (iv) Acetyl chloride into acetophenone (v) Sodium acetate into ethane (vi) Ethanal into lactic acid (vii) Toluene into benzoic acid (viii) Benzaldehyde into malachite green (ix) Benzaldehyde into Cinnamic acid (x) Ethyne into acetaldehyde

Answer»

SOLUTION :
Discussion
18.

How will you convert : formaldehyde into n-butane

Answer»

SOLUTION :`HCHO+H_2 OVERSET(Ni)RARR CH_3OH overset(PBr_3)rarrCH_3Br overset(CH_3CH_2CH_2Br) underset(Na(DRY ether))rarr underset(n-butane) (CH_3-CH_2-CH_2-CH_3)`
Discussion
19.

How will you convert ethanol to acetone?

Answer»

SOLUTION :
Discussion
20.

How will you convert ethanol into ethylene?

Answer»

Solution :`underset("Ethanol")(C_(2)H_(5)OH)OVERSET("conc "H_(2)SO_(4))underset(433-433K)rarrunderset("ETHYLENE")(C_(2)H_(4))+H_(2)O`
Discussion
21.

How will you convert ethanol into ethene?

Answer»

Solution :Dehydration of ethanol with conc. `H_(2)SO_(4)` at 443K gives ETHENE.
`UNDERSET("Ethanol")(CH_(3)CH_(2)OH) underset(("Dehydration"))overset("Conc. "H_(2)SO_(4),443K)to underset("Ethene")(CH_(2)=CH_(2))+H_(2)O`
Discussion
22.

How willyou convert : Ethanoic acid into propanoic acid

Answer»

Solution :Steps involved in the different conversions are given below :
`underset("Ethanoic acid")(CH_(3)COOH) underset("(REDUCTION)")overset(LiAlH_(4))(rarr) underset("ETHANOL")(CH_(3)CH_(2)OH) overset(P+I_(2))(rarr)CH_(3)CH_(2)I overset(KCN)(rarr) CH_(3)CH_(2)CN underset("(Hydrolysis)")overset(H^(+)//H_(2)O)(rarr) underset("Propanoic acid")(CH_(3)CH_(2)COOH)`
Discussion
23.

How willyou convert : Ethanoic acid into methanamine

Answer»

SOLUTION :Steps involved in the different conversions are given below :
`underset("Ethanoic acid")(CH_(3)COOH) underset(-SO_(2)-HCl)overset(SOCl_(2))(rarr) underset("Ethanoyl chloride")(CH_(3)COCl) underset(-NH_(4)Cl)overset(NH_(3)"(excess)")(rarr) underset("ETHANAMIDE")(CH_(3)CONH_(2)) underset("(Hoffmann bromoamide reaction)")overset(Br_(2)//KOH)(rarr) underset("Methanamine")(CH_(3)NH_(2))`
Discussion
24.

How will you convert ethanal into the following compounds? (i) Butane-1,3-diol, (ii) But-2-enal (iii) But-2-enoic acid.

Answer»

SOLUTION :(i) `UNDERSET("Ethanal")(2CH_(3)CHO) underset(("Aldol condensation")) overset("Dil. NaOH")to underset("3-Hydroxybutanal")(overset(4)(C)H_(3)-overset(3)(C)HOH-overset(2)(C)H_(2)-overset(1)(C)HO underset(("Reduction")) overset(NaBH_(4))to underset("Butane-1,3-diol")(overset(4)(C)H_(3)-overset(3)(C)HOH-overset(2)(C)H_(2)overset(1)(C)H_(2)OH`
(II) `underset("Ethanal")(2CH_(3)CHO) underset(("Aldol condensation")) overset("Dil. NaOH")to underset("3-Hydroxybutanal")(overset(4)(C)H_(3)- overset(3)(C)HOH-overset(2)(C)H_(2)-overset(1)(C)HO underset(-H_(2)O)overset(H_(3)O^(+)//Delta)to underset("But-2-enal")(CH_(3)-CH=CH-CHO)`
(iii). `underset("Ethanal")(CH_(3)CHO) underset("Above") overset("As in (ii)")to underset("But-2-enal")(CH_(3)CH=CHCHO) underset("Tollens' reagent")overset([Ag(NH_(3))_(2)]^(+)OH^(-))to underset("But-2-enoic acid")(CH_(3)CH=CHCO_(2)H)`
Discussion
25.

How willyou convert : Ethanamine into methanamine

Answer»

Solution :Steps involved in the different conversions are given below :
`underset("Ethanamine")(CH_(3)CH_(2)NH_(2)) OVERSET(HONO)(rarr) underset("Ethanol")(CH_(3)CH_(2)OH) underset(underset("Oxidation")(H_(2)SO_(4)))overset(K_(2)Cr_(2)O_(7))(rarr)underset("ETHANOIC acid")(CH_(3)COOH) overset(NH_(3))(rarr) underset("Amm. ethanoate")(CH_(3)COONH_(4)) underset(-H_(2)O)overset(Delta)(rarr)CH_(3)CONH_(2) underset(underset(underset("reaction")("bromamide"))("Hoffmann"))overset(Br_(2)//KOH)(rarr) underset("Methanamine")(CH_(3)NH_(2))`
Discussion
26.

How will you convert ethanal into the following compounds ? (i) Butane -1, 3 - diol (ii) But -2- enal (iii) But -2- enoic acid.

Answer»

SOLUTION :(i) `underset("Ethanal")(2CH_(3)CHO)overset("Dil. NaOH")underset("(Aldol condensation)")rarr underset("3 - Hydroxybutanal")(overset(4)CH_(3)-overset(3)CHOH-overset(2)CH_(2)-overset(1)CHO)overset(NaBH_(4))underset("(Reduction)")rarrunderset("Butane -1, 3 - DIOL")(overset(4)CH_(3)-overset(3)CHOH-overset(2)CH_(2)overset(1)CH_(2)OH)`
(ii) `underset("Ethanal")(2CH_(3)CHO)overset("Dil. NaOH")underset("(Aldol condensation)")rarrunderset("3 - Hydroxybutanal")(overset(4)CH_(3)overset(3)-CHOHoverset(2)-CH_(3)overset(1)-CHO)overset(DELTA)underset(-H_(2)O)rarrunderset("But - 2- enal")(CH=CH-CHO)`
(iii) `underset("Ethanal")(CH_(3)CHO)overset("Dil. NaOH")underset(Delta,-H_(2)O)rarrunderset("But - 2- enal")(CH_(3)CH=CHCHO)overset([Ag(NH_(3))_(2)]^(+)OH^(-))underset("Tollens. reagent")rarrunderset("But - 2- enoic acid")(CH_(3)CH=CHCO_(2)H)`
Discussion
27.

How will you convert dietylamine into (i) N,N-diethylacetamide (ii) N-nitrosodiethylamine

Answer»

Solution :(i) Conversion of diethylamine into N,N-diethylacetamide
`underset(("diethylamine")("Acetyl chloride"))((C_(2)H_(5))_(2)NH+CH_(3)COCl) overset("PYRIDINE")(to)underset((N,N-diethyl acetamide"))(C_(2)H_(5))_(2)N-CO-CH_(3)+HCL`
diethylamine react with acetylchloride in the presence of pyridine to form N,N-deithyl acetamide.
(ii) Conversion of diethylamine into N- NITROSODIETHYLAMINE:
`underset(("Diethylamine"))((C_(2)H_(5))_(2)NH) underset(("or")HNO_(2))overset(NaNO_(2)//Conc.HCl)(to) underset(N-"nitrosodiethylamine")((C_(2)H_(5))_(2)N-N=O`
Diethylamine react with nitrous acid to give N-nitrosodiethylamine.
Discussion
28.

How will you convert diethylamine into N,N- diethylacetamide

Answer»

Solution :`{:((C_2H_5)_2NH+CH_3COCl to (C_2H_5)_2-N-COCH_3),(" DIETHYL amine ("2^(@) "amine) ACETYL chlorideN,N, diethyl ACETAMIDE "):}`.
Discussion
29.

How will you convert diethylamine into N-nitrosodiethylamine

Answer»

SOLUTION :`{:((C_2H_5)NH+HNO_2to (C_2H_5)-MN-N=O),(" diethylamineN - NITROSO DIETHYL AMINE "):}`.
Discussion
30.

How will you convert diborane into sodium borohydride?

Answer»

SOLUTION :Diborane REACTS with sodium hydride in the pressence of DIGLYME to give sodium borohydride.
`underset(("diborane"))(B_(2)H_(6))+2NaH overset("Diglyme")(to) underset(("Sodium borohydrige"))(2NaBH_(4))`
Discussion
31.

How will you convert: chlorobenzene to biphenyl?

Answer»

Solution :Chlorobenzene on heating with NA in PRESENCE of DRY ether undergoes Fittig reaction to give biphenyl.
Discussion
32.

How will you convert CH_3COOH to CH_2ClCOOH?

Answer»


ANSWER :`CH_3COOH` is treated with CHLORINE in presence of RED phosphorus.
`CH_3COOH overset(Cl_2//red)rarrCICH_2-COOH` (HVZ) reaction)
Discussion
33.

How will you convert: Cl-(CH_2)_4-Cl into hexane-1, 6-diamine?

Answer»

SOLUTION :`CL-(CH_2)_4-Cl` is TREATED with EXCESS KCN and the dicyanide FORMED is reduced with `LiAlH_4`
`Cl-(CH_2)-Cloverset(2KCN)toNC-(CH_2)_4-CNoverset(LiAlH_4)toH_2N-(CH_2)_6-NH_2`
Discussion
34.

How will you convert CH_(3)COOH into (i) Ethane (ii) Ethanol?

Answer»

SOLUTION :The conversions are achieved as under:
(i) `underset("Acetic ACID")(CH_(3)COOH)+6HI overset("Red" P)(to)underset("ETHANE")(CH_(3))+2H_(2)O`
(ii) `underset("Ethaoic acid")(CH_(3)COOH)overset(LiAlH_(4))(to)underset("Ethanol")(CH_(3)CH_(2)OH)`
Discussion
35.

How will you convert C_(2)H_(5)OH to C_(2)H_(5)OC_(2)H_(5) ?

Answer»

SOLUTION :When `C_(2)H_(5)OH` (ETHANOL) is treated with conc. `H_(2)SO_(4)` at 430 K, intermolecular dehydration take place and the PRODUCT FORMED will be diethyl ether `C_(2)H_(5) -O-C_(2)H_(5)`.
`underset("Ethanol")(2C_(2)H_(5)OH) + H_(2)SO_(4) overset(410 K) to C_(2)H_(5)O-underset("Diethylether")(C_(2)H_(5)) + H_(2)O`
Discussion
36.

How will you convert : C_(6)H_(5)CONH_(2)toC_(6)H_(5)COOH.

Answer»

SOLUTION :`C_(6)H_(5)CONH_(2)+HNO_(2)to C_(6)H_(5)COOH+N_(2)+H_(2)O`
Discussion
37.

How will you convert C_(2)H_(5) - Br into :(i) C_(2)H_(6)(ii) C_(2)H_(5)-O - C_(2)H_(5) (iii) C_(2)H_(5) - CN

Answer»

Solution :(i) `C_(2)H_(5)Br+ 2[H] overset(Zn-Hg+ "Conc.HCl")hArr C_(6)H_(6)+HBr`
(ii)`C_(2)H_(5)Br+ Na^(+)O^(-)C_(2)H_(5) to C_(2)H_(5)-O-C_(2)H_(5)+NABR`
(III) `C_(2)H_(5)Br+ underset("(ALC)")(KCN) to C_(2)H_(5)CN+ KBr`
Discussion
38.

How will you convert : C_(2)H_(2)toCH_(3)COOH.

Answer»

SOLUTION :.
Discussion
39.

How will you convert butan-2-one to propanoic acid?

Answer»

a.Tollens reagent
b.Fehling's solution
C.`NaOH//I_(2)//H^(o+)`
d.`NaOH//NaI//H^(o+)`

Solution :
HENCE the ANSWER is `(c )`.
Discussion
40.

How will you convert boric acid to boron nitride?

Answer»

Solution :Fusion of urea with boric acid `B(OH)_(3)` in an atmosphere of ammonia at 800-1200 K gives BORON nitride `UNDERSET(("Boric acid"))(B(OH)_(3))+NH_(3)overset(Delta)(to)underset(("Boron nitride"))( BN)+3H_(2)O`
Discussion
41.

How will you convert butan-2-one to propanoic acid ?

Answer»

With Tollen's reagent
With FEHLING solution
`NaOH//I_(2)//H^(+)`
`NaOH//NaI//H^(+)`

Solution :is the CORRECT ANSWER.
Discussion
42.

How will you convert, boric acid into, (i) Boron trifluoride (ii) Borax

Answer»

Solution :(i) Boron TRIFLUORIDE: BORIC acid REACTS with calcium fluoride in presence of conc. Sulphuric acid and gives boron trifluoride.
`underset(("Boric acid"))(2B(OH)_(3))+CaF_(2)+3H_(2)SO_(4)to 3CaSO_(4)+underset(("Boron trifluoride"))(2BF_(3))+6H_(2)O`
(ii) Borax: Boric acid, when heated with soda ash it gives borax.
`Na_(2)CO_(3)+underset(("Boric acid"))(4B(OH)_(3))overset(Delta)(to) underset(("Borax"))(Na_(2)B_(4)O_(7))+CO_(2)+6H_(2)O`
Discussion
43.

How will you convert benzene to acetophenone?

Answer»

SOLUTION :
Discussion
44.

How will you convert: Benzene into N,N-dimethylaniline

Answer»

SOLUTION :
` Cl - (CH_2 )_6 -Cl underset("(EXCESS)373K)") OVERSET(+4NH_3 (ALC.))tounderset("Hexane-1, 6-diamine ")(H_2 N- (CH_2)_6 -NH_2)`
Discussion
45.

How will you convert: Benzene into aniline?

Answer»

SOLUTION :Benzene is first treated with a mixture of con. `HNO_3` and con. `H_2SO_4` to FORM nitrobenzene. It is then REDUCED with IRON and HCl to form aniline.
Discussion
46.

How will you convert: Benzene into aniline,

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SOLUTION :
Discussion
47.

How will you convert benzene into aniline?

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SOLUTION :`UNDERSET("Benzene")(C_(6)H_(6)) underset(333K)overset(Conc.HNO_(3)+Conc.H_(2)SO_(4))to underset("Nitroenzene")(C_(6)H_(5)NO_(2)) underset(("Reduction"))overset(Sn//HCl)to underset("Aniline")(C_(6)H_(5)NH_(2))`.
Discussion
48.

How will you convert benzene into aniline ?

Answer»

Solution :`underset("Benzene")(C_6 H_6) OVERSET("CONC HNO_3+Conc .H_2 SO_4)toC_6 H_5NO_2underset("NITROBENZENE ")(C_6 H_5NO_2)underset("Reduction")overset(Sn//HCl)tounderset("Aniline")(C_6 H_5 NH_2)`
Discussion
49.

How will you convert Benzene diazonium chloride into phenol ?

Answer»

SOLUTION :
Discussion
50.

How will you convert benzaldehyde to C_(6)H_(5)CH_(3)

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Solution :It can be reduced to toluene by Clemmenson or WOLF Kishner procedure.
`C_(6)H_(5)CHOunderset(orN_(2)H_(4)//KOH)overset(Zn//Hg//HCl)toC_(6)H_(5)CH_(3)`
Discussion