Explore topic-wise InterviewSolutions in Current Affairs.

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1.

CH_(3)CH_(2)COOH underset("red P")overset(Cl_(2))to A overset(Alc. KOH)to B What is B?

Answer»

`CH_(3)CH_(2)COCl`
`CH_(3)CH_(2)CHO`
`CH_(2)=CHCOOH`
`ClCH_(2)CH_(2)COOH`

Solution :`CH_(3)CH_(2)COOH underset("H.V.Z. reaction")OVERSET(Cl_(2), "red P")to CH_(3)-underset(Cl)underset(|)CH-COOH underset("(Dehudrochlorination)")overset(alc. KOH)to CH_(2)=CH-COOH`
Discussion
2.

CH_(3)CH_(2)COOH The structure of 'c' would be

Answer»

`CH_(3)CH_(2)CONH_(2)`
` CH_(3)CH_(2)NHCH_(3)`
`CH_(3)CH_(2)NH_(2)`
`CH_(3)CH_(2)CH_(2)NH_(2)`

ANSWER :C
Discussion
3.

CH_(3)CH_(2)COOH overset(Cl_(2)//Fe)toX underset(KOH) overset("Alcoholic")toY Compound Y is

Answer»

`CH_(3)CH_(2)OH`
`CH_(3)CH_(2)CN`
`CH_(2)=CHCOOH`
`CH_(3)CHClCOOH`

SOLUTION :
Discussion
4.

CH_(3)CH_(2)C(O)NHCH_(2)CH_(2)CH_(3) is

Answer»

N-Ethylethanamide
Hexanamide
N-Propylpropanamide
N-Ethylhexanamide

Solution :AMIDES NOMENCLATURE
Discussion
5.

In the following reaction CH_(3)CH_(2)CH_(2)Ioverset(alc.KOH)rarrXoverset(Br_(2))rarrYunderset(Liq.NH_(3))overset(NaNH_(2))rarrZ the end product Z is :

Answer»

`CH_(3)CH_(2)CH_(2)NHCOCH_(3)`
`CH_(3)CH_(2)CH_(2)NH_(2)`
`CH_(3)CH_(2)CH_(2)CONHCH_(3)`
`CH_(3)CH_(2)CH_(2)CONHCOCH_(3)`

Solution :`CH_(3)CH_(2)Cl overset(NaCN)underset(-NaCl)RARR CH_(3)CH_(2)CN overset(Ni, H_(2))rarr underset((Y))(CH_(3)CH_(2)CH_(2)NH_(2))overset("acetic")underset("anhydride")rarr undrset((Z))("N - propyl ACETAMIDE")(CH_(3)CH_(2)CH_(2)NHOCH_(3))`
Discussion
6.

CH_3CH_2Cl overset(NaCN)to X overset(Ni//H_2)to Y overset"acetic anhydride"to Z Z in the above reacting sequence is

Answer»

`CH_3CH_2CH_2NHCOCH_3`
`CH_3CH_2CH_2NH_2`
`CH_3CH_2CH_2CONHCH_3`
`CH_3CH_2CH_2CONHCOCH_3`

SOLUTION :`CH_3CH_2Cl OVERSET"NaCN"to UNDERSET"X"(CH_3CH_2CN) overset(Ni//H_2)to underset"Y"(CH_3CH_2CH_2NH_2) overset((CH_3CO)_2O)tounderset"Z"(CH_3CH_2CH_2NHCOCH_3)`
Discussion
7.

CH_(3)CH_(2)Cl overset(NaCN) to X overset(Ni//H_(2)) to Y overset("Acetic")underset("anhydride") to Z Find the sum of carbon and hydrogen atoms in product Z.

Answer»


SOLUTION :`CH_(3)CH_(2)Cl overset(NACN) to underset(X)(CH_(3)CH_(2)CN+ HCN) overset(NiH_(2)) to underset(Y)(CH_(3)CH_(2)CH_(2)NH_(2)) overset((CH_(3)CO)_(2)O) to CH_(3)CH_(2)CH_(2)NHCOCH_(3)`
Discussion
8.

CH_(3)CH_(2)CIoverset(NaCN)(rarr)Xoverset(Ni//H_(2))(rarr)Yoverset("Acetic anhydride")(rarr)Z Z in the above reaction sequence is

Answer»

`CH_(3)CH_(2)CH_(2)NHCOCH_(3 )`
`CH_(3)CH_(2)CH_(2)NH_(2)`
`CH_(3)CH_(2)CH_(2)CONHCH_(3)`
`CH_(3)CH_(2)CH_(2)CONHCOCH_(3)`

Solution :`CH_(3)CH_(2)CIoverset(NACN)UNDERSET(-NaCI)(rarr)underset((X))(CH_(3)CH_(2)CN)overset(Ni//H_(2))(rarr)underset((Y))(CH_(3)CH_(2)CH_(2)NH_(2))overset("acetic anhydride")(rarr)underset("n-propylacctamide"(Z))(CH_(3)CH_(2)CH_(2)NH-COCH_(3)+CH_(3)COOH)`
Discussion
9.

Strutures of products , Starting materials or reagents CH_(3)CH_(2)CHOoverset("Tollens")underset("reagent")rarr

Answer»

Solution :`UNDERSET("PROPANOIC ACID")(CH_(3)-CH_(2)-COOH)`
Discussion
10.

CH_(3)CH_(2)CHO overset(NaOH, Delta)underset("aldol")to product A. A is

Answer»

`CH_(3)CH_(2)CH=CHCH_(2)CHO`
`CH_(3)CH_(2)CH=OVERSET(CH_(3))overset(|)C-CHO`
`CH_(3)CH_(2)underset(OH)underset(|)CH-CH_(2)CH_(2)CHO`
`CH_(3)CH_(2)underset(OH)underset(|)CH-overset(CH_(3))overset(|)CH-CHO`

ANSWER :B
Discussion
11.

CH_3CH_2CHO is produced when the following is hydrolysed:

Answer»

`CH_3CH_2CH_2Cl`
`CH_3CHClCH_2Cl`
`Ch_3CH_2CHCl_2`
`CH_C*Cl_2, CH_3`

ANSWER :C
Discussion
12.

CH_3CH_2CHO and CH_3COCH_3 areexample of :

Answer»

CHAIN isomers
FUNCTIONAL isomers
Metamers
POSITION isomers

Answer :B
Discussion
13.

CH_(3)CH_(2)CH=CH_(2)+HBr overset(ROOR)to underset("major")((X))+underset("Minor")((Y)) (X) and (Y) respectively are

Answer»

`BrCH_(2)CH_(2)-CH=CH_(2) and C_(2)H_(5)-CHBr-CH_(3)`
`C_(2)H_(5)-CH_(2)CH_(2)-Br and Br-CH_(2)CH_(2)CH=CH_(2)`
`C_(2)H_(5)-CH_(2)CH_(2)-Br and C_(2)H_(5)-CHBr-CH_(3)`
`C_(2)H_(5)-CHBr-CH_(3) and C_(2)H_(5)-CH_(2)CH_(2)Br`

Solution :In PRESENCE of peroxides, addition of HBr FOLLOWS anti-Markovnikov's rule.
`CH_(3)CH_(2)CH=CH_(2)+HBr underset(("Anti-Mark. Addn."))overset(ROOR)to underset((X))(CH_(3)CH_(2)CH_(2)CH_(2)Br)+underset((Y))(CH_(3)CH_(2)-CHBr-CH_(3))`
Discussion
14.

CH_(3)CH_(2)CH_(3) overset (673-873K)to X+Y X and Y are:

Answer»

`H_(2)`and methane
`H_(2)`and ETHYLENE
`H_(2)` andPropylene
Methane and ethylene

Answer :C,D
Discussion
15.

CH_(3)CH_(2)CH_(2)OH overset(PBr_(3))rarr A underset(KOH)overset("alcoholic")rarr B overset(HBr)rarr C overset(NH_(3))rarr D. Write the formula for the final product D

Answer»

SOLUTION :`CH_(3)CHNH_(2)CH_(3)`
Discussion
16.

CH_3CH_2CH_2OH overset(PCl_5)to A underset(Delta)overset"Alc.KOH"to B, [B] is : -

Answer»

PROPENE
PROPYNE
PROPANONE
PROPANAL

SOLUTION :
Discussion
17.

CH_(3)CH_(2)CH_(2)I+OHtoCH_(3)CH_(2)CH_(2)OH+I^(-) at 27^(@) C valu of velocity constant is 1.84 (mol L^(-1)) min^(-1) and if at 327 K temp. Value of velocity constant is 38.84 (mol L^(-1))^(1) min^(-1) than find E_(a)

Answer»

SOLUTION :22020 CAL.
Discussion
18.

CH_3CH_2CH_2OH is the functional isomer of:

Answer»

`CH_3OC_2H_5`
`C_2H_5OC_2H_5`
`CH_3COC_2H_5`
NONE of the above

Answer :A
Discussion
19.

CH_3CH_2CH_2OH is functional isomer of

Answer»

ETHYL METHYL ether
ethyl n-propyl ether
methyl n-propyl ether
2-propanol

Answer :A
Discussion
20.

CH_(3)CH_(2)CH_(2)I overset("alc. KOH")rarr A overset(H^(+), H_(2)O)rarr B overset(SOCl_(2))rarr C underset(LiAlH_(4))overset([H])rarr D. Write the molecular weight compound D

Answer»


ANSWER :44
Discussion
21.

CH_(3)CH_(2)CH_(2)CONH_(2) is boiled with aqueous NaOH, then the reaction mixture is acidified with HCl. The products obtained are

Answer»

`CH_(3)CH_(2)CH_(2)COO^(-)+NH_(3)`
`CH_(3)CH_(2)CH_(2)COONa+NH_(3)`
`CH_3CH_(2)CH_(2)COOH+NH_(4)CL`
`CH_(3)CH_(2)CH_(2)COO^(-)+NH_(4)Cl`

ANSWER :C
Discussion
22.

CH_(3)CH_(2)CH_(2)CH_(2)OH underset(CH_(2)Cl_(2))overset("PCC[O]")to X What isX?

Answer»

`CH_(3)CH_(2)CH_(2)CHO`
`CH_(3)CH_(2)CH_(2)COOH`
`CH_(3)-underset(CH_(3))underset(|)CH-COOH`
`CH_(3)-underset(O)underset(||)C- CH_(2)-CH_(3)`

Solution :`underset("Butan-1-ol")(CH_(3)CH_(2)CH_(2)CH_(2)OH) underset(CH_(2)Cl_(2))overset("PCC[O]")to underset("Butanal")( CH_(3)CH_(2)CH_(2)CHO)`
Discussion
23.

CH_(3)CH_(2)CH_(2)CH_(2)CH= CH_(2) underset([H_(2)O])overset(H_(3)O^(+))to "Alcohol", indentify alcohol.

Answer»

Hexan-2-ol
Hexan-2-ol
Hexan-3-ol
Hexan-4-ol

Solution :`CH_(3)CH_(2)CH_(2)CH_(2)CH= CH_(2) underset([H_(2)O])overset(H_(3)O^(+))to underset("Hexane-2-ol")(CH_(3)CH_(2)CH_(2)CH_(2)underset(OH)underset(|)CHCH_(3))`
Discussion
24.

CH_(3)CH_(2)CH_(2)CH_(2)OHunderset(Na_2Cr_2O_7//H_2SO_4)overset([O])to X, What is X?

Answer»

`CH_(3)CH_(2)COOH`
`CH_(3)COOH`
`CH_(3)CH_(2)CH_(2)COOH`
`CH_(3)CH_(2)CH_(2)CHO`

SOLUTION :`UNDERSET("Butan-1-ol")(CH_(3)CH_(2)CH_(2)CH_(2)OH ) underset(Na_2Cr_2O_7//H_2SO_4)overset([O])to underset("BUTANOIC ACID")(CH_(3)CH_(2)CH_(2)COOH)`
Discussion
25.

CH_(3)CH_(2)CH_(2)CH_(2)COOHandCH_(3)-overset(CH_(3))overset(|)(CH)-CH_(2)COOH are examples of __________ isomerism.

Answer»

geometrical
funcational
chain
postional

Answer :C
Discussion
26.

CH_(3)CH_(2)CH_(2)CH_(2)-NH_(2)overset(Delta)rarr 'X' Identify structure of 'X' :

Answer»




ANSWER :C
Discussion
27.

CH_(3)CH_(2)C-=CHoverset(NaNH_(2)//NH_(3)(liq.))rarr overset(CH_(3)CH_(2)Br)rarroverset(Li,NH_(3)(liq))rarr

Answer»

`CH_(3)CH_(2)CH = CHCH_(3)`
`CH_(3)CH_(2)CH = CH_(2)`

ANSWER :C
Discussion
28.

CH_(3)CH_(2)Brunderset(Delta)overset(aq.KOH)rarrAunderset(Delta)overset(KMnO_(4)//H^(+))rarrBunderset(Delta)overset(NH_(3))rarr Cunderset("alkali")overset(Br_(2))D. "D" is.

Answer»

`CH_(3)Br`
`CH_(3)CONH_(2)`
`CH_(3)NH_(2)`
`CHBr_(3)`

Solution :`CH_(3)CH_(2)Brunderset(DELTA)OVERSET(AQ KOH)rarrCH_(3)CH_(2)Ohunderset(Delta)overset(KMnO_(4)//H_^(+))rarrdownarrow`
`CH_(3)NH_(2)overset(Br_(2)//"ALKALI")rarrCH_(3)CONH_(2)underset(Delta)overset(NH_(3))rarrCH_(3)COOH`
Discussion
29.

CH_(3)CH_(2)Brunderset(alc.)overset(NaCN)toCH_(3)CN true, hence (CH_(3))_(3)CBrunderset(alc.)overset(NaCN)toA. Hence A is,

Answer»

`(CH_(3))_(3)C-CN`
`(CH_(3))_(3)C-CN`
`CH_(3)-CH=CH-CH_(3)`
`CH_(3)-CH_(2)-CH=CH_(2)`

Solution :CN is stronger nucliophile causesloss of HBr instead of NUCLEOPHILIC SUBSTITUTION REACTION.
Discussion
30.

CH_3CH_2Br underset(triangle)overset(aq NaOH)(to)A underset(triangle)overset(KMnO_4"/"H+)(to)B underset(triangle)overset(NH_3)(to)C overset(Br_2"/"NaOH)(to)D

Answer»

BROMOMETHANE
`ALPHA` -BROMO SODIUM acetate
methanamine
acetamide

Answer :C
Discussion
31.

[CH_3(CH_2)_(15)-N(CH_3)_3].overset(+)Br^(-) Identify the type of detergent given in the above structure.

Answer»

SOLUTION :When NaCl solution is added to gold sol, the COLOUR is CHANGED from RED to blue
Discussion
32.

CH_(3)CH_(2)Br overset("aq. KOH")underset(Delta)rarr A overset(KMnO_(4)//H^(+))underset(Delta)rarrB overset(NH_(3))underset(Delta)rarr Coverset(Br_(2))underset("alkali")rarr D, ''D'' is :

Answer»

`CH_(3)Br`
`CH_(3)CONH_(2)`
`CH_(3)NH_(2)`
`CHBr_(3)`.

SOLUTION :`CH_(3)CH_(2)Broverset("aq. KOH")underset(Delta)rarr underset((A))(CH_(3)CH_(2)OH)overset(H^(+))overset(KMnO_(4))rarr underset((B))(CH_(3)COOH overset(NH_(3))underset(Delta)rarr underset((C ))(CH_(3)CONH_(2)) overset(Br_(2))underset("Alkali")rarr underset((D))(CH_(3)NH_(2))`
Discussion
33.

CH_(3)(CH_(2))_(14)CH_(2)CH_(2)COOHoverset(Br_(2)//PBr_(3))to(A)underset((ii)H^(+))overset((i)Alk.KOH)to(B)overset((C))toCH_(3)(CH_(2))_(14)COOHoverset((i)Ag^(+),(ii)Br_(2))to(D)

Answer»


ANSWER :A::B::C::D
Discussion
34.

CH_(3)CH_(2)-overset(O)overset(||)C-OC_(2)H_(5)underset(H_(2)O^(**))overset(Naoverset(**)OH)to Products of the above reaction contain

Answer»

`CH_(3)CH_(2)-OVERSET(O)overset(||)C-overset(**)O-`
`CH_(3)CH_(2)-overset(O^(**))overset(||)C-`
`CH_(3)CH_(2)-overset(**)O-H`
both a and b

Answer :D
Discussion
35.

CH_(3)CH_(2)-underset(CH_(3))underset(|)overset(CH_(3))overset(|)(C)-underset(OH)underset(|)(C)H-CH_(3) underset(heat)overset(H_(2)SO_(4))tounderset("Major")P What is the major product P in the above reactions?

Answer»

`OVERSET(CH_(3))overset(|)(C)H_(2)-CH_(2)-overset(CH_(3))overset(|)(C)-CH=CH_(2)`
`CH_(3)-overset(CH_(3))overset(|)(C)H-overset(CH_(3))overset(|)(C)H-CH=CH_(3)`
`CH_(3)CH_(2)-underset(CH_(3))underset(|)overset(CH_(3))overset(|)(C)-CH=CH_(2)`
`CH_(3)CH_(2)-overset(H_(3)C)overset(|)(C)=overset(CH_(3))overset(|)(C)-CH_(3)`

Solution :
Discussion
36.

CH_(3)CH_(2)-overset(O)overset(||)(C)-OC_(2)H_(5) underst(H_(2)O^(**)) overset(Naoverset(**)(O)H)to

Answer»

`CH_(3)CH_(2)-overset(O)overset(||)(C)-overset(**)(C)^(-)`
`CH_(3)CH_(2)-overset(.^(**)C)overset(||)(C)-O^(-)`
`CH_(3)CH_(2)-overset(**)(C)-H`
both (a) and (B)

Solution :
Discussion
37.

CH_(3)CH_(2)-O-CH_(2)-CH_(3)+H_(2)O underset(Delta)overset("dil." H_(2)SO_(4))to X What is X?

Answer»

Ethanol
Propanol
Butanol
Ethyl acetate

Solution :`UNDERSET("Ethoxy ethane")(CH_(3)CH_(2)-O-CH_(2)-CH_(3)+H_(2)O) underset(Delta)OVERSET("Hydrolysis dil." H_(2)SO_(4))to underset("Ethanol")(2CH_(3)CH_(2)OH)`
Discussion
38.

CH_(3)CH_(2)-C-=N overset(X)to CH_(3)CH_(2)-CHO The reagent/s X is (are)

Answer»

`SnCl_(2)//HCl,H_(2)O//`BOIL
`H_(2)//Pd-BaSO_(4)`
`LiAlH_(4)//`ETHER
`NaBH_(4)//ether,H_(3)O^(+)`

Solution :`underset("Propanenitrile")(CH_(3)CH_(2)-C-=N)underset(("STEPHEN reaction")) overset(SnCl_(2)//HCl)to CH_(3)CH_(2)-CH=NH.HCl overset(H_(2)O,boil)to underset("Propanal")(CH_(3)CH_(2)-CHO)+NH_(4)Cl`
Discussion
39.

CH_3CH_2 Cl overset("alc KOH")to X__( org) Wrong statement about the above reaction.

Answer»

Hybridization of 'C' CHANGED from `sp^(3)"to" sp^(2) `
` C-C ` bond length is DECREASED
C-H bond length is increased
Bond angle is increased

ANSWER :C
Discussion
40.

CH_(3)CH_(2)-CO-CH_(2)CH_(3), The IUPAC name of the compound is _______

Answer»

2-butanone
3-pentanone
2-pentanone
propanone

Answer :B
Discussion
41.

CH_(3)CH_(2)-Br+NaI overset(" Acetone ")rarr X + NaBr The (X) in above reaction is ……..

Answer»

IODOMETHANE
IODOETHANE
IODOPROPANE
Iodubutane

ANSWER :B
Discussion
42.

CH_(3)CH = CHCHO is oxidised CH_(3)CH =CHCOOH using

Answer»

OSMIUM TETRA oxide
Ammonical SILVER nitrate
Selenium dioxide
Alkaline permagnate

Answer :C
Discussion
43.

CH_3CH = CHCH_2Cl overset(KCN)(to) The possible products is / are

Answer»

`CH_3CH = CH CH_2CN`
`CH_3CH(CN)CH =CH_2`
`NC CH_2 -CH = CH CH_2Cl`
`CH_3CH = undersetoverset(|)(CN)(C ) -CH_3`

Solution : B is the allylic of `SN^2` rearrangement RXN
`CH_3 - undersetoverset(|)(Me)(C )H = CH CH_2Cl UNDERSET(-KCl)overset(KCN)(to) CH_3 - CH = CH - CH_2 - CN + CH_3undersetoverset(|)(CN)(C )H -CH = CH_2`
Discussion
44.

CH_(3)CH= CH_(2)+ H_(2)O overset(H^(+))hArrX , indentify X

Answer»

Propane
Propane 2-ol
Propanol
None of these

SOLUTION :Unsymmetric alkene undergo addition reaction according to Markonikov.s rule.
`UNDERSET("Propene")(CH_(3)CH= CH_(2)+ H_(2)O) OVERSET(H^(+))hArrunderset("Propane - 2 - ol")(CH_(3)-underset(OH)underset(|)CH-CH_(3))`
Discussion
45.

CH_(3)"CCl"_(3)overset("hydrolysis")rarr " acid - 2" Correct answer is

Answer»

`(pK_(a))_(HCN) gt (pK_(a))_("ACID - 2")`
`(pK_(a))_("HCN")=(pK_(a))_("acid - 2")`
`(pK_(a))_("HCN")LT (pK_(a))_("acid-2")`
All of these

Answer :A
Discussion
46.

CH_3CequivCcdotCH_3underset((ii)(H_2O)//(Zn))overset((i)X)rarrCH_3CO-COCH_3in the above reaction X is :

Answer»

`HNO_3`
`O_2`
`O_3`
`KMnO_4`

ANSWER :C
Discussion
47.

(CH_3)C - OH + Na to X, C_2H_5OH +PCl_5 to Y , X + Y to Z . What is Z

Answer»

`CH_3 - undersetoverset(|)(CH_3)(C) = CH_2`
`CH_3-CH_2 - CH_2 - O - CH_3`

`CH_3 - undersetoverset(|)(CH_3)(C)H-O - C_2H_5`

ANSWER :C
Discussion
48.

CH_3C-=N rarr CH_3CHO Reagents useful for this conversion is / are

Answer»

I) `SnCl_(2) + CONC. HCl , ` II) `H_3O^(+)`
I) `DIBAL - H , ` II) `H_2O`
DIL. `H_(2)SO_4`
Both (1) and (2)

Answer :D
Discussion
49.

CH_(3)C-=C CH_(3)underset((ii)H_(2) O //Zn)overset((i)X)(to)H_(3)C-underset(O)underset(||)(C)-underset(O)underset(||)(C)-CH_(3) In the above reaction X is

Answer»

`HNO_(3)`
`O_(3)`
`O_(2)`
`KMnO_(4)`

ANSWER :B
Discussion
50.

CH_(3)C -= C CH_(3) overset(H_(2) " Lindlar catalyst ")(to)A , Identify A .

Answer»

SOLUTION :
Discussion