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.

Ethyl iodide on treatment with alcoholic potash gives :

Answer»

ETHYL alcohol
Ethane
Acetylene
Ethylene

Answer :D
Discussion
2.

Ethyl hydrogen sulphate is obtained by the reaction of H_2SO_4 on

Answer»

Ethylene
Ethane
Ethyl chloride
ETHANOL

Solution :`underset"Ethanol"(CH_3-CH_2-OH)+underset"CONC."(H_2SO_4)overset(110^@C)to underset"Ethyl HYDROGEN sulphate"(CH_3CH_2HSO_4)`
Discussion
3.

Ethyl hydrogen sulphate is obtained by reaction of H_2SO_4 ON:

Answer»

Ethylene
Ethane
Ethyl chloride
Ethanol

Answer :D
Discussion
4.

Ethyl-hydrogen-sulphate is obtained by reaction of H_2SO_4 on

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Ethylene
Ethyl chloride
Ethane
Ethanol

ANSWER :A
Discussion
5.

Ethyl formate on catalytic hydrogenation gives

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`CH_3-OH`
`CH_3OH` and `C_2H_5OH`
`C_2H_5-OH`
H-CHO and `CH_3-OH`

ANSWER :B
Discussion
6.

Ethyl esterunderset("excess")overset(CH_(3)MgBr)toP. The product P is

Answer»




Solution :Since ESTERS add two moles of the Grignard reagent to form `3^(@)` alcohols, therefore, two of the alkyl groups in `3^(@)` alcohols must be IDENTICAL. Since the Grignard reagent is `CH_(3)MGBR`, therefore, the product must contain at least two methyl groups. the only product which contains at least two (actually three) `CH_(3)` groups is option (a). thus
Discussion
7.

Ethyl ester underset"excess"overset(CH_3MgBr)toP. The product P will be

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Solution :Recall that, esters react with EXCESS of Griguard reagents to FORM `3^@` alcohols having at least two IDENTICAL ALKYL groups corresponding to GRIGNARD reagent
`R-oversetOoverset"||"C-OR'+R''MgX -- to R-underset(R'')underset|overset(OH)overset|C-R''`
Since here Griguard reagent is `CH_3MgBr`, the `3^@` alcohol should have at least two methyl groups Thus, the choice with at least two methyl groups at the carbon linked with -OH group will be the correct choice. Hence (a) is the correct choice.
Discussion
8.

Ethyl ester overset(CH_(2)MgBr)underset("Excess")toP. The product P will be

Answer»





SOLUTION :RECALL that , esters react with excess of Grignard reagents to from `3^(@)` alcohols having at least two identical ALKYL groups corresponding to grignard reagent.
`R-overset(O)overset(||)(C)-R' +R''MgXto R-overset(HO)overset(|)underset(R'')underset(|)(C)-R''`
Since here grignard reagents is `CH_(3)Mg Br`, the `3^(@)` alcohol should hagve at least two methyl groups. Thus, the choice with at least two methyl groups at the carbon linked with -OH GROUP will be the correct choice. Hence (A) is the correct choice.
Discussion
9.

Ethyl choride (C_(2)H_(4)(g)Cl), is prepared byt reactionof ethylen with hydrogen chloride :C_(2)H_(4)(g) + HCl to C_(2)H_(5)Cl(g)Whatis the valueof DeltaU (in kJ), if 70 g ethlene and 73 gof HClare allowed to react at 300 K.

Answer»

`-69.8`
`-180.75`
`-174.5`
`-139.6`

Solution :`C_(4)H_(4)+HCl to C_(2) H_(5)Cl`
`Deltan_(g) = - 1`
HClislimitingreagent `rArr DeltaU= DeltaH - Deltan_(g)RT`
` = - 185 +(1 XX 8.314 xx 10 ^(-3) xx 300) = - 69.8 kJ`
Fortwo mole of HCl `= - 69.8 xx2= -139.6 kJ`
Discussion
10.

Ethyl cyanide on reduction with NA//C_2H_5OH gives ethyl amine.

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SOLUTION :METHYL CYANIDE
Discussion
11.

convert Methyl chloride to 2-phenylethanamine.

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SOLUTION :
Discussion
12.

Ethyl cyanide is reduced by di-isobutyl aluminium hydride gives

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propanal
propanoic ACID
PROPAN - 1- amine
PROPANE

Answer :A
Discussion
13.

Ethyl chloride reacts with sodium metal in presence of dry ether and forms

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Isobutane
n-butane
Neopentane
TERTIARY BUTYL chloride

Answer :B
Discussion
14.

Ethyl chloride reacts with sodium ethoxide to form a compound A. Which of the following reactions also yields A?

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`C_(2)H_(5)CI, KOH(alc),DELTA`
`2C_(2)H_(5)OH, conc.H_(2)SO_(4), 140^(@)C`
`C_(2)H_(5)CI, MG` (DRY ether)
`C_(2)H_(2), dil. H_(2)SO_(4),HgSO_(4)`

Answer :B
Discussion
15.

Ethyl chloride react with sodium ethaoxide given,

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ETHOXY ethane
methoxy ethane
ethane
n-butane

Solution :`C_(2)H_(5)Cl+C_(2)H_(5)ONa OVERSET(Delta) to C_(2)H_(5)OC_(2)H_(5)+NaCl`
Discussion
16.

Ethyl chloride on treatment with aqueous alkali give:Ethane,Ethene,Ethanal,Ethanol.

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Ethane
Ethene
Ethanal
Ethanol

Answer :D
Discussion
17.

Ethyl chloride is treated with sodium metal gives

Answer»

n-butane
propane
ETHYL alcohol
sodium ethoxide

SOLUTION :This REACTION is Wurtz reaction.
`2C_(2)H_(5)Cl2Na+ overset("dry ether") to C_(4)H_(10)+2NaCl`
Discussion
18.

Ethyl chloride on heating with silver cyanide forms a compound X. The functional isomer of X is

Answer»

`C_2H_5NC`
`C_2H_5CN`
`CH_3-NH-CH_3`
`(CH_3)_3N`

ANSWER :B
Discussion
19.

Ethyl chloride on heating with AgCN forms a compound X. The functional isomer of X is

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`C_(2) H_(5) NC`
`C_(2)H_(5)NH_(2)`
`C_(2)H_(5)CN`
none of these.

Solution :`C_(2)H_(5)CL + underset(ALC)AgCN → C_(6)H_(5)NC + AgcI`
Functional isomer of `C_(2)H_(5)NC (X)` is `C_(2)H_(5)CN`
Discussion
20.

Ethyl chloride is not useful in preparing

Answer»

PVC
TEL
grignard REAGENT
DIETHYL ether

Solution :PVC it is PREPARED from vinyl CHLORIDE
Discussion
21.

Ethyl chloride is converted into diethyl ether by

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WURTZ synthesis
Grignard reaction
Perkin's reaction
Willaimson's synthesis

Answer :D
Discussion
22.

Ethyl chloride is not used in

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PREPARATION of T.E.L.
Local anaesthesia
General anaesthesia
Ethylating AGENT

ANSWER :C
Discussion
23.

Ethyl chloride is

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`1^@`alkyl HALIDE
`2^@ `alkyl halide
`3^@`alkyl halide
gem halide

Answer :A
Discussion
24.

Ethyl chloride can be converted into ethane by reacting with

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`ZN +HCL`
`LiAlH_4`
`H_2 //NI`
All theabove

Answer :D
Discussion
25.

Ethyl chloride does not react with

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NA, DRY ether 
AQ. `AgNO_3`
`KCN`
Mg, dry ether 

Answer :B
Discussion
26.

Ethyl bromide reacts with silver cyanide to give :

Answer»

ETHYL acetate
Ethyl isocyanide
Ethyl cyanide
Ethyl amine

Solution :`CH_(3)CH_(2)Br+AgCNrarrunderset("Ethyl isocyanide")(CH_(3)CH_(2)NC)+AgBr`
Discussion
27.

Ethyl bromide reacts with silver nitrite to form

Answer»

Nitroethane
Nitroethane & ETHYL nitrite
Ethyl nitrite
Ethane

Solution :
Discussion
28.

Ethyl bromide reacts with sodium ethoxide to from butyl bromide.is it true or false?

Answer»

SOLUTION :ETHYL BROMIDE reacts with sodium ethoxide to from diethyl ETHER.
Discussion
29.

Ethyl bromide reacts with lead sodium alloy to form:

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TETRAETHYL lead
Tetraethyl bromide
BOTH (A) AND (B)
None

Answer :A
Discussion
30.

Ethylbromidereactswithexcessof alcoholicammoniathemajorproductis

Answer»

ETHYLAMINE
diethylamien
TRIETHYLAMINE
tetraethylammonium BROMIDE

ANSWER :A
Discussion
31.

Ethyl bromide reacts with lead- sodium alloy to form

Answer»

TETRAETHYL lead
TETRAMETHYL bromide
Both (1) and (2)
NONE of these

Answer :A
Discussion
32.

Ethyl bromide on heating with alcoholic KOH solution gives

Answer»

`C_(2)H_(5)OH`
`C_(2)H_(6)`
`C_(2)H_(5)OC_(2)H_(5)`
`C_(2)H_(4)`

ANSWER :D
Discussion
33.

Ethyl bromide (M) can be differentiated from bromobenzene (N) because with aqueous KOH soluion

Answer»

M from ALCOHOL easily
N forms PHENOL easily
M does not react
N gives o-bromophenol

Solution :`C_2H_5Br + KOH_(aq) overset(DELTA)(to) C_2H_5 - OH +KBr`
M forms alcohol easily
Discussion
34.

Ethyl bromide can be obtained by the action of HBr on

Answer»

ethane
propene
ethene
acetylene

Solution :We know that,
`CH_(2)CH_(2)+HBr to C_(2) H_(5)Br+H_(2)O`
THUS, ethyl bromide `(C_(2)H_(5)Br)` is obtained by the action of HYDROGEN bromide (HBr) on ethanene.
Discussion
35.

Ethylbromide can be obtained by the action of HBr on

Answer»

acetylene
propene
ethane
ethanol

Solution :we know that `C_(2)H_(5)OH+HBR to C_(2)H_(5) Br+H_(2)O`.
Thus ethyl bromide `(C_(2)H_(5)Br)` is OBTAINED by the ACTION of hydrogen bromide (HBr) on ethanol.
Discussion
36.

Ethyl bromide can be obtained by the action of HBr on :

Answer»

ACETYLENE
PROPENE
Ethane
Ethanol

ANSWER :D
Discussion
37.

Ethyl bromide can be converted into ethyl alcohol by

Answer»

heating with dilute HYDROCHLORIC acid and ZINC
boiling with an alcoholic solution of KOH
the action of moist SILVER oxide
REFLUXING methanol

Answer :C
Discussion
38.

Ethyl bromide can be converted into ethyl alcohol by :

Answer»

Heating with dilute hydrochloric acid and zinc
BOILING with an alcoholic solution of KOH
The action of moist SILVER oxide
REFLUXING methanol

Answer :3
Discussion
39.

Ethyl bromide can be convertd into ethyl alcohol by

Answer»

HEATING with DILUTE hydrochloric acid and zinc
Boiling with an alcoholic SOLUTION of KOH
The ACTION of moist silver oxide
Refluxing methanol

Solution :`Ag_(2)O+H_(2)Oto 2AgOH`
Discussion
40.

Ethyl bromide and ethanolic KOH mainly produces

Answer»

ETHENE
ethanol
diethyl ether
ethane

Answer :A
Discussion
41.

Ethyl bromide and isopropyl chloride can be distinguish by :

Answer»

ALCOHOLIC `AgNO_3`
COMPARING their colours
Burning the COMPOUNDS on spatula
Aqueous `KOH` solution

Answer :A
Discussion
42.

Ethyl benzoate to benzoic acid?

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SOLUTION :ETHYL BENZOATE to BENZOIC ACID :
Discussion
43.

Ethyl benzoate reacts with PCl_(5) to give

Answer»

`C_(2)H_(5)Cl+C_(6)H_(5)COCl+POCl_(3)+HCl`
`C_(2)H_(5)Cl+C_(6)H_(5)COCl+POCl_(3)`
`CH_(3)COCl+C_(6)H_(5)COCl+POCl_(3)`
`C_(2)H_(5)Cl+C_(6)H_(5)COOH+POCl_(3)`

Solution :`C_(6)H_(5)-UNDERSET(O)underset(||)(C)-OC_(2)H_(5)+PC l_(5)to C_(6)H_(5)COCl+C_(2)H_(5)Cl+POCl_(3)`.
Discussion
44.

Ethyl benzoate is reduced by NaBH_(4) gives

Answer»

BENZYL alcohol
benzaldehyde
benzoic acid
none of these

Answer :D
Discussion
45.

Ethyl benzoate is hydrolysed in the presence of NaOH to ,

Answer»

SODIUM BENZOATE , phenol
benzoic ACID , ethanol
toluic acid , ethanol
sodium benzoate , ethanol.

Solution :
Discussion
46.

Ethyl benzene is prepared from chlorobenzene and what ?

Answer»

`C_(2)H_(5)-CL` in dry ether
`C_(2)H_(5)-Cl` and Na in dry ether
`C_(2)H_(5)-Cl` and MG in dry ether
`C_(2)H_(5)-Cl` and alc. KOH

Answer :B
Discussion
47.

Ethyl benzene can not be prepared by :

Answer»

WURTZ reaction
Wurtz Fitting reaction
Friedel-Crafts reaction
Clemmensen REDUCTION

ANSWER :A
Discussion
48.

Ethyl amine undergoes oxidation in the presence of KMnO_4 followed by hydrolysis to from :

Answer»

An acid
An alcohol
An aldehyde
A N - oxide

Answer :C
Discussion
49.

Ethyl Benzene underset((ii) H^+//H_2 O)overset((i) KMnO_4//OH^-)to X Predict X in above reaction

Answer»

`C_(6) H_(5) CH_(2) COOH`
`C_(6) H_(5) CH_(2) CHO`
BENZOIC acid
Benzaldehyde

Answer :C
Discussion
50.

Ethyl amine to N-ethylacetamide?

Answer»

SOLUTION :Ethyl amine to N-ethylacetamide :
`underset("ethyl amine")(C_(2)H_(5)NH_(2))+underset("acetyl chloride")(CH_(3)COCl)overset("pyridine")rarrunderset("N-ethyl acetamide")(C_(2)H_(5)-NH-COCH_(3))+HCl`
Discussion