EXERCISE-01
CHECK YOUR GRASP
SELECT THE CORRECT ALTERNATIVE (ONLY ONE CORRECT ANSWER)
1.
Acids have much higher boiling points than isomeric esters because :(A) Acids form dimers by H–Bonding
(B) Acids are volatile in steam
(C) Ester are non–volatile
(D) Acids can ionise to give protons in aqueous solution
2.
Which of the following acids have the lowest pK a value :-
Cl
3.
4.
(A) CH3 CH COOH
(B) Cl
(C) CCl3COOH
(D) CHCl 2COOH
CH2 CH2 COOH
The reaction of an amide with bromine and alkali to form a primary amine is called :(A) Hunsdiecker reaction
(B) Hofmann mustard oil reaction
(C) Hoffmann degradation of amides
(D) Hell–Volhard–Zelinski reaction
The regents A and B in the reaction sequence
A
CH3COOC2H5  CH3COOC(CH3)3

B
CH3CONHNH2
are given by the set :-
5.
(A) Isopropyl alcohol, hydrazine
(B) Isopropyl alcohol, hydroxylamine
(C) t-butyl alcohol, hydrazine
(D) t-butyl alcohol, hydroxylamine
The carboxylic acids react with hydrazoic acid in presence of H 2SO 4 to form a primary amine. This reaction is
called as :-
6.
(A) Curtius rearrangement
(B) Lossen rerrangement
(C) Schmidt reaction
(D) Schotten-Boumann reaction

CH MgBr
H3O
3
Ethyl acetate  
P
 
Excess
The product P will be :-
H3C
(A)
7.
8.
H3C
CH3
OH
H3C
(B)
H5C2
C2H5
OH
H5C2
(C)
H5C2
C2H5
OH
(D)
H5C2
C2H5
H7C3
OH
HVZ reaction is specific for –
(A) Replacement of –hydrogens
(B) Replacement of –hydrogens
(C) Replacement of – carbons
(D) Replacement of – carbons
Decreasing order of acidity of p-methoxy benzoic acid (A), p-nitrobenzoic acid (B) and benzoic acid
(C) is–
(A) B, C, A
(B) A, B, C
(C) C, A, B
(D) None
9.
Benzoic acid reacts with Ca(OH) 2. The product obtained on dry distillation gives–
(A) Benzophenone
10.
(B) Acetophenone
(C) Benzaldehyde
(D) None of these
In a set of the given reactions, acetic acid yielded a product C.
C H
( i ) C H MgBr / ether
6
6
2 5
 B 

 C ; product C would be:CH 3COOH+PCl 5  A 
AlCl3 

(ii ) H 3 O
C2H5
(A) CH3CH(OH)C2H5
11.
(C) CH3CH(OH)C6H5
(B) CH3COC6H 5
(D) CH3 C(OH)C6H5
The correct reactivity order with the nucleophile is :
(A) CH3COCl > CH3CONH2 > CH3COOCH3
(B) CH3COCl > CH3COOCH3 > CH3CONH2
(C) CH3CONH2 > CH3COOCH3 > CH3COCl
(D) CH3COOCH3 > CH3COCl > CH3CONH2
12.
A
CH3 CH2 C NH2 

  CH3—CH2—NH2
B
    CH3—CH2—OH
O
In the above sequence A & B respectively are (A) Br2/KOH, NaOH
13.
(B) Br2/KOH, HNO2
(B) CH3 C OC2H5
O
15.
(C) CH3 C ONH.NH2 (D) CH3 C NH2
N.NH2
O
O
Among the following, which is the strongest acid?
(A) CHF2 – CH2– CH2–COOH
(B) CH3– CH2 – CF2 – COOH
(C) CH2F –CHF – CH2 –COOH
(D) CH3– CF2 – CH2 – COOH
In the Rosenmund reduction, the catalyst used is:
(A) Pd/ BaSO4
16.
(B) Raney Ni
(C) Sn/HCl
(D) Zn/HCl
Which of the following carboxylic acids undergoes decarboxylation easily?
(A) C6H5COCH2COOH
(B) C6H5COCOOH
(C) C6H5CH
COOH
OH
17.
(D) HNO2, Br2 / KOH
Ethyl acetate on treatment with hydrazine gives (A) CH3 C NH.NH2
14.
(C) KMnO4 , KOH
(D) C6H5CHCOOH
NH2
The reactivities of acid halides (I), anhydrides (II), esters (III) and amides (IV) with nucleophilic reagents follow the
order
(A) I > II > III > IV
18.
(B) IV > III > II > I
(C) I > III > II > IV
(D) III > II > I > IV
In the following sequence of reactions
+ CH3CH2COCl
AlCl3
A
Zn (Hg)
conc. HCl, Heat
B
the product (B) is:
(A) PhCOCH2CH3
(B) PhCHOHCH2CH3
(C) PhCH2CH2CH3
(D) PhCH= CHCH3
19.
Consider the following reaction.
O
O
(i) NaBH4
+
OCH3
(ii) H ,
A
The product (A) is :
O
OH
OH
OH
(A)
(B)
OH
(C)
(D)
O
20.
O
O
Which of the following orders regarding the base strength of a leaving group in a reaction of an acid derivative
with a nucleophile is correct :
21.
(A) Cl  > RCOO  > RO 
(B) Cl  > RO  > RCOO 
(C) RO  > RCOO  > Cl 
(D) RO  > Cl  > RCOO 
The correct sequence of decreasing order of reactivity of hydrolysis of acid chlorides is :
(A) PhCOCl > p-O 2NC 6H 4COCl > p-CH 3OC 6 H 4COCl
(B) PhCOCl > p-CH 3OC 6H 4COCl > p-O 2 NC 6H 4COCl
(C) p-O 2NC 6H 4COCl > PhCOCl > p-CH 3OC 6 H 4COCl
(D) p-O 2 NC 6H 4COCl > p-CH 3OC 6H 4COCl > PhCOCl
22.
23.
Kolbe electrolysis of potassium succinate gives CO 2 and ................. :
(A) C 2H 6 and KOH
(B) C 2H 2 and KOH
(C) C2H 4, KOH and H 2
(D) CH 4, C2H 6 and C 2H 4
In the following reaction identify compounds A, B, C and D :
PCl 5 + SO 2  A + B ;
A + CH 3 COOH  C + SO 2 + HCl
2C + (CH 3) 2 Cd  D + CdCl 2
24.
(A) SOCl2, POCl3, CH3COCl, CH3COCH 3
(B) SOCl 2, HCl, CH 3Cl, CH 3CHO
(C) SO2, Cl2, C2H5Cl, CH3COCH3
(D) None of these
What are A and B in the following sequence of reactions :
P
A
(i) CH3CH2COOH 
Br2
( i ) Alc.KOH excess

B
; (ii) A 
(ii ) H 
(A) CH3—CH.COOH, CH2 = CHCOOH
(B) CH 3CH 2COBr, CH 2 = CHCOOH
Br
Br
(C) CH2CH2COOH, CH2 = CH.COOH
Br
(D) H3C——–COOH, H2C=C—COOH
Br
Br
25.
Which of the following compound would be expected to decarboxylates when heated :-
O
O
O
(A)
O
(B)
OH
H3C
O
H3C
CH3
O
O
OH
CH3
(C) H C
O
(D) H3C
3
CH2
O
ANSWER
CHE CK Y OU R G R ASP
KEY
E XE R CISE -1
Qu e.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
An s .
A
C
C
C
C
A
B
A
A
D
B
B
A
B
A
A
A
C
C
C
Qu e.
21
22
23
24
25
An s .
C
C
A
A
A
EXERCISE–02
BRAIN TEASERS
SELECT THE CORRECT ALTERNATIVES (ONE OR MORE THEN ONE CORRECT ANSWERS)
1.
2.
Which of the following reactions involve a decrease in the length of the carbon chain :(A) Schmidt reaction
(C) Hofmann's bromamide reaction
(C) Hell-Volhard-Zelinski reaction
(D) All of these
Dry distillation of a mixture of calcium formate and the calcium acetate gives –
(A) HCHO
3.
(B) CH 3CHO
(C) CH3COCH3
(D) None
Consider the following sequence of reactions.
O
HOCH2.CH2OH
+
H
A
1. LiAlH4,Et2O
+
2.H3O
B
COOCH3
The products (A) and (B) are, respectively,
O
OH
(A)
O
and
O
O
(B)
and
O
CH3OC
COOCH3
O
O
O
and
(D)
CH2OH
and
COOCH3
COOCH3
4.
OCH= CH2
HO OCH2CH2OH
O
(C)
COOCH3
COOCH3
CH2OH
Consider the following reaction.
CH2COOH
1. B2H6, THF
+
2.HO
3
A
O2N
The product (A) is
CH2CH2OH
CH2CH2OH
(A)
(B)
H2N
O2N
CH2CHO
(C)
CH2COOH
(D)
O2N
H2N
5.
6.
Which of the following methods are used for the conversion of carboxylic acids into acid chlorides
(RCOOH  RCOCl) ?
(A) RCOOH + SOCl2 
(B) RCOOH + PCl5 
(C) RCOOH + Cl2 
(D) RCOOH + P + Cl 2 
Which of the following statements are correct for benzoic acid ?
(A) Nitration gives o-and p-nitrobenzoic acid.
(B) Bromination (Br 2/FeBr 3) gives m-bromobenzoic acid.
(C) The Friedel-Crafts reaction with CH 3COCl/AlCl 3 gives m-carboxyacetophenone.
(D) The reaction with concentrated sulphuric acid gives 3-carboxybenzenesulphonic acid.
7.
Which of the following compounds react with aniline to give acetanilide :
Which of the following compounds react with aniline to give acetanilide.
O
–NHCCH3
–NH2
Acetanilide
Aniline
O
(A) CH3COCl
8.
(B) H C
3
O
O
O
CH3
(C) CH3CHO
(D)
–OCCH3
What is the final product (B) of this sequence :
CH3
Br2
light
A
1.KCN
+
2. H3O ,Heat
CH3
B
CH3
COH
2
CH2CO2H
CO2H
(A)
(B)
(C)
(D)
CO2H
9.
What is compound Z :

CH CH OH
NaCN
3
2
H3O
Z
CH3CH 2CH 2Br 
Y 
 X 
H
O
(A) CH3CH=CHCOH
(B) CH 3CH 2CH 2CH=NOCH 2CH 3
O
(C) CH3CH2CH2CH(OCH2CH3)2
(D) CH3CH2CH2COCH2CH3
O
CH 3 OH

 A , A is :
10.
O
(A) CH2—CH2
OH
11.
COOCH3
(B) CH2— CH2
(C) Both are correct
(D) None is correct
COOH OCH3
Which of the following orders of acid strength is correct :
(A) RCOOH > ROH > HOH > HCCH
(B) RCOOH > HOH > ROH > HCCH
(C) RCOOH > HOH > HCCH > ROH
(D) RCOOH > HCCH > HOH > ROH
12.
The relative order of esterification of alcohols is :(A) 1° < 2° < 3°
13.
(B) 1° > 2° > 3°
(D) 1° < 3° < 2°
The treatment of CH 3CH 2COOH with chlorine in the presence of phosphorus gives :
(A) CH3CH2COCH3
14.
(C) 1° > 3° > 2°
(B) CH3CH 2CH 2Cl
(C)CH3CH(Cl)COOH
(D) ClCH2CH 2COOH
Which of the following sequences of rate of alkaline hydrolysis of esters is correct :
(A) CH3CH 2COOCH3 < (CH 3)2CHCOOCH3 < (CH 3) 3CCOOCH 3
(B) CH3CH 2COOCH 3 > (CH 3) 2CHCOOCH 3 > (CH 3)3CCOOCH 3
(C) CH3CH 2COOCH 3 > (CH 3) 2CHCOOCH 3 < (CH 3)3CCOOCH 3
(D) CH3CH 2COOCH 3 < (CH 3) 2CHCOOCH 3 > (CH 3)3CCOOCH 3
15.
Which of the following is used to perform following transformation :
OH
H3C
Cl
H3C
O
O
(A) SOCl2
16.
(B) PCl 5
(B) lactic acid
(C) Actophenone
(D) propionic acid
One can distinguish between HCOOH and CH 3COOH with :
(A) NaHCO 3
18.
(D) SO 2Cl 2
Which of the following does not give iodoform :
(A) Acetic acid
17.
(C) PCl3
(B) H2SO 4
(C) tollens reagent
(D) fehling's solution
Which of the following reagents are involved in the following transformation ?
O
O
OR
OH
+ ROH
O
(A) H 3O +
(B) LiAlH4
(C) Ethylene glycol
(D) Acetone
Cl KCN
H3O 

(A ) 
(B) 
(C)
Cl
19.
Identify the correct statement(s) about the above sequence of reactions :
(A) Compound (A) is formed through S N reaction
(B) Compound (C) on reduction with LiAIH 4 forms a product which on dehydration given cyclohexene.
(C) compound (A) requires two moles of hydrogen for complete reduction.
(D) Compound (C) on Schmidt's reaction gives a product which reacts with HNO2 to give (D) as major product.
Compound (D) on dehydration gives cyclopentene
20.
Which of the following on reduction with LiAIH4 will give ethyl alcohol ?
(A) (CH3CO)2O
(B) CH3COCl
(C) CH3CONH2
ANSWER
BRAIN TEASER S
Q u e.
1
2
3
An s .
A ,B
A ,B,C
Q u e.
16
17
An s .
A,D
C,D
A,B,C
(D) CH3COOC2H 5
KEY
E XE R CISE -2
4
5
6
7
8
9
10
11
12
13
14
15
C
A
A,B,D
B,D
A ,B,D
D
D
A
B
B
C
B
A ,B,C
18
19
20
A ,B,D
A,B,D
EXERCISE–03
MISCELLANEOUS TYPE QUESTIONS
TRUE OR FAL SE :
1.
—COOC2H5 cannot undergoes claisen condensation.
2.
Heating of -hydroxy acid gives lactones.
3.
Hunsdiecker reaction involve free redical in intermediate steps.
4.
Benzoic acid is stronger than methanoic acid but weaker than ethanoic acid.
5.
Acid halides are more reactive than acid amides towards the hydrolysis.
FILL IN THE BLANKS :
1.
When sodium benzoate is heated with sodalime, it gives........................
2.
pKa and Ka of an acid are connected by the relation........................
3.
Benzoic acid does not undergo Friedel-Crafts reaction due to ........................of the benzene ring by the
................... effect of –COOH group.
4.
Hell-Volhard-Zelinsky reaction involves the replacement of an ........................atom from the alkyl group of
a monocarboxylic acid by a ..................... atom.
5.
Carboxylic acids may be prepared by the reaction of Grignard reagents with ....................... .
MATCH THE COLUMN
1.
Match the column I with column II.
Column-I (Reaction)
2.
Column-II
(A)
Arndt Eistert synthesis
(p)
Carbanion
(B)
Hunsdiecker reaction
(q)
Carbocation
(C)
Claisen condensation
(r)
Ketene
(D)
Esterification reaction
(s)
Free radical
(Possible products)
Match the column I with column II.
Column-I (Acid)
(A)
Benzoic acid
(B)
O2N—
(C)
Cl—
(D)
H3CO—
(E)
H3C—
Column-II (K a )
(p)
3.3 × 10 –5
(q)
10.2 × 10 –5
(r)
30.6 × 10 –5
—COOH
(s)
6.4 × 10 –5
—COOH
(t)
4.2 × 10 –5
—COOH
—COOH
3.
Match the column I with column II.
Column-I
Co lu mn -I I
(A)
Schimdt reaction
(p)
NaOH / CaO
 RH
RCOOH 

(B)
Curtius reaction
(q)
Red P / X 2
 R–CH–COOH
R–CH2COOH 

X
(C)
Decarboxylation
(r)
NaN 3
 RNH 2
RCOCl 

(D)
HVZ reaction
(s)
N3H
 RNH 2
RCOOH 

ASSERTION & REASON QUESTION :
These questions contains, Statement-I (assertion) and Statement-II (reason).
(A) Statement-I is True, Statement-II is True ; Statement-II is a correct explanation for Statement-I
(B) Statement-I is True, Statement-II is True ; Statement-II is NOT a correct explanation for Statement-I
(C) Statement-I is True, Statement-II is False.
(D) Statement-I is False, Statement-II is True.
1.
O
||
Statement-I : Unlike the >C=O group of aldehydes and ketones, the >C=O of R  C  OH does not
undergo nucleophilic addition reactions.
Because
Statement-II : Carboxylic acids exist as dimers due to intermolecular hydrogen bonding in aprotic medium.
2.
Statement-I : CH 3COCH 2COOC 2H 5 will give iodoform test.
Because
O
Statement-II : It contains CH3C— group linked to a carbon atom.
3.
Statement-I : Acetic acid does not undergo haloform reaction.
Because
Statement-II : Acetic acid has no  hydrogen.
4.
Statement-I : Benzoic acid on nitration will give m– Nitro benzoic acid.
Because
Statement-II : –COOH group will increase e
5.
—
density on meta position.
Statement-I : Acyl halide are more reactive than acid substance amide towards nucleophillic substitution.
Because
—
—
Statement-II : X are better leaving group than NH 2 .
COMPREHENSION BASED QUESTIONS :
Comprehension # 1
Amides undergo hydrolysis to yield carboxylic acid plus amine on heating in either aqueous acid or aqueous
base. The conditions required for amide hydrolysis are more severe than those required for the hydrolysis
of esters, anhydrides or acid chlorides, but the mechanism is similar (nucleophilic acyl substitution). Nucleophilic
acyl substitutions involve a tetrahedral intermediate, hence these are quite different from alkyl substitution
NaCN
(RCH 2Br 
RCH 2CN) which involves a pentavalent intermediate or transition state.
One of the important reactions of esters is their reaction with two equivalent of Grignard reagent to give
tertiary alcohols.
1.
2.
3.
The mechanism involved during the hydrolysis of acid derivatives is :
(A) elimination-addition
(B) addition-elimination
(C) nucleophilic addition elimination
(D) electrophilic addition elimination
Which of the following constitutes the best substrate during the acidic hydrolysis of amides ?

OH
O
O
(A) R–C–NH2
(B) R–C–NH3

O
(D) R–C–NH
2

(C) R–C–NH2
For which functional derivative of carboxylic acids, acidic hydrolysis is avoided?
(A) Acid chlorides
(B) Acid amides
(C) Acid anhydrides
(D) Esters
O
4.
O is treated with two equivalent of methyl magnesium iodide and the product acidified
When
the final product will be
OH
OH
(A)
(B)
OH
OH
(C)
HO
O
OH
(D)
OH
Comprehension # 2
Ester gives nucleophilic addition reaction followed by elimination reaction with carbon nucleophile. When
carbon nucleophile is of an ester then the reaction is known as Claisen condensation reaction. This reaction
is also carried out between ester and a ketone. A successful Claisen condensation requires an ester with
two -hydrogens and an equivalent amount of base rather than a catalytic amount of base.
1.
Consider the given reaction
C 2 H 5 ONa
ester ( X )

 enolate ion 
CH3–COOC2H5 
Product
C 2 H 5 OH
Claisen condensation
For the above reaction the most reactive ester is:
2.
(A) C6H5COOC2H5
O O
|| ||
(B) C 2 H 5 O  C  C  OC 2 H 5
(C) HCOOC2H5
O
||
(D) C 2 H 5 O  C  OC 2 H 5
Intramolecular Claisen condensation given by diester is known as:
(A) Stobbe condensation
(B) Dieckmann condensation
(C) Mannich reaction
(D) Reformatsky reaction
3.
In the given reaction :
O
||
C 2 H 5 O  C  (CH 2 ) 3  CH 2  COOC 2 H 5
(i ) C 2 H 5 ONa / C 2 H 5 OH

 [X]
( ii ) H 2 O / HCl
[X] is :
O
O
C
COOH
(A)
4.
O
O
O
O
CH3
(B)
CHO
(C)
(D)
(C) HCOOC2H5
COOC 2 H 5
(D) |
COOC 2 H 5
In the given reaction
O
O
CHO
+ X
[X] is :
O
||
(A) H  C  Cl
(B) HCl + CO
Comprehension # 3
The reactivity of acid derivatives in general follows the order :
O
R
R–C
C=O >
Cl
R
R
O>
R–C
C=O >
RO
C=O
NH2
O
The above order of reactivity can be explained in terms of the :
(i) Basicity of leaving group (ii) Resonance effect (iii) Inductive effect
Weaker is the basic character of leaving group, more is the reactivity of acid derivative. In general, all the
acid derivatives show resonance as follows:
R
R
C=O
L
..
–
C––O
L
+
More is the stabilization, lesser is the reactivity and vice-versa.
1.
Which among the following anions is the most basic ?
(A) NH 2
2.
(B) OR
(C) R – COO
(D) Cl–
(C) RCOOR
(D) RCONH 2
Which of the most reactive acid derivative?
(A) R–COCl
(B) (RCO)2O
3.
Which among the following ester is most reactive towards nucleophilic attack ?
(A) CH3COOCH3
(B) HCOOCH3
(C) CH3CH2COOC6H5
(D) All are equally reactive
O
4.
Acid derivatives although contain ––C–– group, yet do not undergo the usual properties of carbonyl group.
It is due to:
(A) inductive effect
5.
(B) resonance
(B) Acid amide
(D) Acid anhydride
KEY
E XE R CISE -3
Tr u e / Fals e
1. T

(C) Ester
ANSWER
M ISCEL L AN E OU S TYP E Q U ESTION

(D) all of these
Which of the following compounds will be most easily hydrolysed ?
(A) Acid halide

(C) eletromeric effect
2. F
3. T
4. F
5. T
F i ll i n t h e B lanks
1. Benzene
2. pk a= –log k a
4.  - Hydrogen, halogen
5. CO2
3. deactivation , electron withdrawing
Matc h th e C o lu mn
1. (A) r ; B s ; (C)  p ; (D) q
2. (A) s ; (B) r ; (C)  q ; (D) p ; (E) t
3. (A) s ; (B) r ; (C)  p ; (D) q


A s s er ti o n - R eas o n Qu es ti o ns
1. C
2. D
C o mp r eh e ns i o n
B as ed
3. C
4. C
5. A
Qu es ti o ns
Comprehension #1 : 1. (C)
Comprehension #2 : 1. (B)
Comprehension #3 : 1. (A)
2. (C)
2. (B)
2. (A)
3. (A)
3. (A)
3. (B)
4. (B)
4. (C)
4. (B)
5. (A)
EXERCISE–04 [A]
CONCEPTUAL SUBJECTIVE EXERCISE
1.
Carbon-oxygen bond length in formic acid are 1.23 Å and 1.36Å but in sodium formate both the carbonoxygen bonds have same value, i.e., 1.27Å. Explain.
2.
The second dissociation constant of fumaric acid is greater than maleic acid. Explain.
3.
Which is stronger conjugate base in each pair ?
(B) CH 3 or CH 3 COO — (C) HCOO — or CH 3COO —
(A) OH or NH 2
(D) CF 3COO — or CCl 3COO —
4.
Which acid of each pair shown here would you expect to be stronger?
(A) CH3CO2H or CH2FCO2H
(B) CH2ClCO2H or CH2BrCO2H
(C) CH3CH2CHFCO2H or CH3CHFCH2CO2H
(D) F3C
5.
CO2H
or
H3C
What are A and B in the following ?
O
O
H O / H
NaBH
2
4

 B

 A 

OH
6.
CO2H
In the following reaction, trace the position of isotopic O18.
O
O
18
CH3––C––O––H + CH3CH2––O––H
7.
CH3––C––O––CH2CH3 + H2O
Write the reagents to carry out following conversions:
O
O
II.........
CH3CH
I.........
CH3CCl
CH3CH2OH
O
+
8.
AlCl3
O
A, What is A?
O
9.
+ NBS
(i ) Mg / ether
 X 
Y
(ii )CO 2 ;
(iii )H 3 O 
What are X and Y ?
O
10.
HN
+
Br2
0°C
OH
A
O
Write down the structure of A? What is the use of A?
ANSWER
CON CEP TUAL SU BJ ECTIVE E X ER CISE
KEY
E XE R CISE
-4 (A)
1.
Formate in shows equivalent resonating structures while formic acid does not.
2.
After the first dissociation, maleate ion is more stabilised due to intramolecular H-bonding, whereas fumarate
ion does not have intramolecular H-bonding.
(B) CH 3—
3.
(A) NH 2–
4
(A) CH2FCO2H
(B) CH2ClCO2H
(C) CH3CH2CHFCO2H
(D) F3C
OH
5.
O
3
A :
5
6
(C) CH3COO–
1
4
(NaBH 4 reduces keto group)
OH
2
6
4
5
B : 3
O
(by intramolecular esterification)
1
O
2
O
18
6.
O is in ester CH3COCH2CH3
7.
I : LiAlH4
II : Pd/BaSO4 (Rosenmund)
O
C
8.
A is formed by Friedel-Crafts reaction A :
HO— C
O
9.
—Br
X :
—COOH
Y :
O
10.
HN
O
+
Br2
0°C
+
Br––N
OH
O
HBr
O
1-Bromopyrrolidine-2, 5-dione
or N-Bromosuccinimide (NBS)
It is used for brominating in allylic and benzylic hydrogen.
Br
H3C
NBS
CH2
CH2
CH2
CH2
(D) CCl3COO –
CO2H
EXERCISE–04 [B]
1.
BRAIN STORMING SUBJECTIVE EXERCISE
Identify A, B, C, D and E in the following sequence of reactions:
O
CH3COH
red P, Br2
excess
2.
PCl5
A
D
NaOH
H2, Pd/BaSO4
B
dil. NaOH

C
E
+
H3O
When the compound shown was heated in refluxing hydrochloric acid, a compound with the molecular formula
A(C5H6O3) was isolated. Identify this product. Along with this product, three other carbon-containing substances
are formed. What are they ?
O
CH3O
COCH(CH3)2
CH3O
COCH(CH3)2
O
What happens when A(C 5H 6O 3) reacts with
(A) HCN follwed by hydrolysis
(B) soda lime/
(C) NH 2NH 2/glycol, OH –
(D) P/Br 2
(E) N 3 H
3.
CH 3COO – (acetate ion) is more stable than C 2H5O – (ethoxide ion). Explain.
4.
Which is more reactive in each pair towards S N reaction ?
O
O
(A) CH3CCl
or
(B)
CH3Cl
CNH2
or
NH2
O O
(C) CH3COCCH3 or CH3OCH3
O
H2C
C
AlCl3
O +
5.
H2C
Zn(Hg)
A
HCl
SOCl2
B
C
AlCl3
C
O
D
LiAlH4
+
H /
E
F
NBS
G
alcoholic KOH
H
Identify A to H.
O
6.
reacts with :
O
-Butyrolactone (ester)
(A) NH3
(B) LiAlH4
What are the product in each case ?
(C) EtOH, H +
(D) NaBH 4 /EtOH
7.
In case of aldehydes and ketones there is addition of nucleophile but in case of acyl compound there is
nucleophilic substitution. Explain.
8.
N3H
CH3COOH
H2SO4

NH3

A
Reagent
B
(i) What are A & B ?
(ii) Which reagent will convert B into A ?
9.
What happens when?
O
COCl
(i)
is reduced by LiAlH4.
COCl
O
(ii)
is reduced by using LiAlH4 and by using Lindlar's catalyst.
O
10.
Complete the following sequence of reactions :
H3C
O
P2O5
CH––C
NH2
H3C

+
(A)
Br2/P
KEY
(C)
AgOH
(D)

-2H2O
Diester.
E XE R CISE
-4 (B)
O
O
A : CH3CCl
(B)
ANSWER
BRAIN STOR MIN G SUBJ ECTIVE E X ER CISE
1.
H3O
B : CHCH
(Rosenmund)
3
C : CH 3CH=CHCHO (aldol condensation)
Br O
D : BrC––COH
COOH
E :
COOH
Br
2.
Given compound represents
(i) acetal
(ii) ester
When it is subjected to acidic hydrolysis, acetal changes to carbonyl group and ester changes to acid.
O
O
CH3O
COCH(CH3)2
CH3O
COCH(CH3)2
HCl/H2O
HO
COH
HO
COH
reflux 
O
+ 2(CH3)2CHOH + 2CH3OH
(X)
(Y)
O
–H2O
O
O
COH

COOH + CO2
O
COH
A(C5HO
6 3)
(Z)
O
(X), (Y) and (Z) are thus, other carbon containing product along with C 5H6O 3 which is the main product.
A(C5H6O3) has (i) keto group
(ii) carboxylic group
HO
O
HO
+
HCN
COOH
COOH
(A)
H3O
NC
COOH
HOOC
(A)
CaO/NaOH

(B) A
O
NH2NH2
(C) A
—COOH
glycol, OH
P/Br2
(D) A
O
(Wolff-Kishner reduction)
COOH (HVZ-reaction)
Br
N3H

(E) A
O
NH2 (Schmidt-reaction)
–
+
3.
CH3––C
O
CH3––CH2––O–
–
O
Ethoxide
Acetate ion
Electron delocalion, as shown by following resonance structures, causes the negative charge in acetate to
be shared equally by both oxygens. This type of resonance effect is not possible in ethoxide ion.
–
..
O
..
CH3C
..
..
..
O
CH3C
O
4.
(A) CH3CCl
O
(B)
..
O
..
..
..
O
..
–
O
CH3C 
CNH2
O
O O
(C) CH3COCCH3
O
O
C
H2C
C
AlCl3
O +
5.
H2C
Zn(Hg)
SOCl2
HCl
C
OH
C
C
OH
O
O
(A)
(B)
(C)
+
LiAlH4
AlCl3
H /
-H2O
O
C
Cl
O
NBS
allylic substitution
OH
(D)
(E)
(F)
Br
alcoholic KOH
(G)
(H)

O

6.
NH3
(A) 
CH2CH2CH2C=O
O
-butyrolactone
OH
NH2
alcohol
amide

O

(B)
LiAlH4
O

CH2CH2CH2CH2
OH
OH
alcohol
alcohol
O
+
EtOH/H
(C)
(transesterification)
O
CH2CH2CH2COEt
OH
O
alcohol
ester
O
NaBH4/EtOH
(D)
O
7.
No reaction (ester is not reduced by NaBH 4).
In case of carbonyl compounds H – or R – are poor leaving group , therefore addition take place.
But in case of acid derivatives, Z– are good leaving group therefore subsitution take palce.
O
8.
(i) A : CH 3—NH 2
B : CH3—C—NH2
(ii) Reagent =Br 2 /Alc. KOH
OH
O
9.
(i)
COCl
+ [H]
LiAlH4
CH2OH
O
COCl
CHO
O
+ H2
(ii)
O
Pd/BaSO4
Boiling xylene
O
O
CH2OH
CH2OH
OH
[H]
LiAlH4
O
H3C
10.
CH–C
H3C
NH2
P2O5

H3C
CH–CN
H3O+
H3C
CH–COOH
H3C
H3C
(A)
(B)
OH
H3C
CH
H3C
COOH
(D)

–2H2O
C
H3C
CH
(C)
O C
H3C
COOH
H3C
H3C
O
AgOH
Br2/Red P
CH3
C
C O
O
Diester
CH3
Br
EXERCISE–05
1.
2.
3.
PREVIOUS YEARS QUESTIONS
The major product of nitration of Benzoic acid is (A) 3–Nitrobenzoic acid
(C) 2–Nitrobenzoic acid
[IIT -93]
(B) 4–Nitrobenzoic acid
(D) 2,4–dinitrobenzoic acid
The organic product formed in the reaction C6H5COOH
(i) LiAlH4
+
(ii) H2O
:
(A) C6H5CH2OH
(B) C6H5COOH & CH4
(C) C6H5CH3 & CH3OH
(D) C6H5CH3 & CH4
Which of the following carboxylic acids undergo decarboxylation easlily
(A) C6H5CO–CH2COOH
(B) C6H5COCOOH
(C) C6H5CH2–COOH
(D) C6H5CH2–COOH
OH
NH2
[IIT -95]
[IIT -95]
4.
The molecular weight of benzoic acid in benzene as determined by depression in freezing point method
corresponds to [IIT -96]
(A) Ionization of benzoic acid
(B) Dimerisation of benzoic acid
(C) Trimerisation of benzoic acid
(D) Solvation of benzoic acid
5.
CH3CH2COOH
6.
7.
8.
9.
10.
Br2
Red P
X
NH3(alc.)
Y
Y in the above reaction is [IIT -96]
(A) Lactic acid
(B) Ethylamine
(C) Propylamine
(D) Alanine
Among the given compounds, the most susceptible to nucleophilie attack at the carbonyl group is -[IIT-97]
(A) MeCOCl
(B) MeCHO
(C) MeCOOMe
(D) MeCOOCOMe
Read the following statement and explanation and answer as per the option given below :
[IIT -98]
Assertion : Acetic acid does not undergo haloform reaction.
Reason : Acetic acid has no alpha hydrogens.
(A) If both assertion and reason are correct, and reason is the correct explanation of the assertion
(B) If both assertion and reason are correct, but reason is not correct explanation of the assertion
(C) If assertion is correct but reason is incorrect
(D) If assertion is incorrect but reason is correct
When propionic acid is treated with aqueous NaHCO3, CO2 is liberated. The 'C' of CO2 comes from (A) Methyl group
(B) Carboxylic acid group
[IIT -99]
(C) Methylene group
(D) Bicarbonate
Benzoyl chloride is prepared from benzoic acid by [IIT-2000]
(A) Cl2, hv
(B) SO2Cl2
(C) SOCl2
(D) Cl2 , H2O
Which of the following acids has the smallest dissociation constant [IIT -02]
(A) CH3CHFCOOH
(B) FCH2CH2COOH
(C) BrCH2CH2COOH
(D) CH3CHBrCOOH
OCOCH3
P
11.
CH3
OCOCH3
H3C
Acidic
Hydrolysis
Product
Q
formed by P & Q can be differentiated by :
(A) 2, 4- DNP
(C) NaHSO3
[IIT -03]
(B) Lucas reagent (ZnCl2 & conc. HCl)
(D) Fehlings solution
12.
MeO
CHO + X
CH3COONa
MeO
CH=CH–COOH

[IIT -05]
What is X ?
(A) CH2COOH
(B) BrCH2–COOH
(C) COOH(CH3CO)2O
(D) (CH3CO)2O
CHO
13.
Compound (A) C5H8O2 liberated CO2on reaction with sodium bicarbonate. It exists in two forms neither of
which is optically active. It yielded compound (B). C5H10O2 on hydrogenation. Compound (B) can be separated
into enantiomorphs. Write structures of (A) and (B).
14.
[IIT -87]
An organic compound (A) on treatment with acetic acid in presence of sulphuric acid produces an ester (B).
(A) on mild oxidation gives (C). (C) with 50% KOH followed by acidification with dilute HCl generates (A) and
(D). (D) with PCl5 followed by reaction with ammonia gives (E). (E) on dehydration produces hydrocyanic acid.
Identify (A) to (E)
15.
[IIT -87]
Compound (A) (C6H12O2) on reduction with LiAlH4 yielded two compounds (B) and (C). The compound (B) on
oxidation gave (D). 2 moles of (D) on treatment with alkali (aqueous) and subsequent heating furnished (E).
The later on catalytic hydrogenation gave (C). The compound (D) was oxidized further to give (F) which was
found to be monobasic acid (m.wt. 60.0). Deduce structures of (A) to (F).
16.
[IIT -90]
The sodium salt of a carboxylic acid, (A) was produced by passing a gas (B) into aqueous solution of caustic
alkali at an elevated temperature and pressure (A) on heating in presence of sodium hydroxide followed by
treatment with sulphuric acid gave a dibasic acid (C). A sample of 0.4g of (C) on combustion gave 0.08g of
H2O and 0.39g of CO2. The silver salt of the acid, weighing 1.0g, on ignition yielded 0.71 g of Ag as residue.
Identify (A), (B) and (C).
17.
[IIT -90]
Two mole of an ester (A) are condensed in presence of sodium ethoxide to give a -keto ester (B) and
ethanol. On heating in an acidic solution (B) gives ethanol and - keto acid (C). On decarboxylation (C) gives
3-pentanone. Identify (A), (B) and (C) with proper reasoning and give reactions.
18.
[IIT -92]
An organic compound A(C4H6O3) on treatment with ethyl alcohol gives a carboxylic acid B and compound C.
Hydrolysis of C under acidic conditions gives B and D. Oxidation of D with KMnO4 also gives B. B on heating
with Ca(OH)2 gives E (Molecular formula C3H6O) E does not gives Tollen's test and does not reduce Fehling
solution but forms 2,4–dinitrophenylhydrazone. Identify A to E.
19.
[IIT -92]
An acidic compound (A), C4H8O loses its optical activity on strong heating yielding (B). C4H6O2 which reacts
readily with KMnO4. (B) forms a derivative (C) with SOCl2, which on reaction with CH3NH2 gives (D). The
compound (A) on oxidation with dilute chromic acid gives an unstable compound (E) which decarboxylate
readily to give (F), C3H6O. The compound (F) gives a hydrocarbon (G) on treatment with amalgamated Zn
and HCl. Give structures of (A) to (G) with proper reasoning.
20.
[IIT -95]
An liquid (X) having molecular formula C6H12O2 is hydrolysed with water in presence of an acid to give a
carboxylic acid (Y) and an alcohol (Z). Oxidation of (Z) with chromic acid gives (Y). What are (X), (Y) and (Z).
[IIT -96]
21.
Acetophenone on reaction with hydroxylamine-hydrochloride can produce two isomeric oximes. Write
structures of the oximes.
22.
[IIT -97]
An organic acid (A), C5H 10O2 reacts with Br2 in the presence of phosphorus to give (B). Compound (B)
contains an asymmetric carbon atom and yields (C) on dehydrobromination. Compound (C) does not show
geometric isomerism and on decarboxylation gives an alkene (D) which on ozonolysis gives (E) and (F).
compound (E) gives a positive schiff's test but (F) does not. Give structures of (A) to (F) with reasons.
[IIT -97]
23.
24.
The correct IUPAC name of C6H5COCl is
(A) Benzoyl chloride
(B) Benzene chloro ketone
(C) Benzene carbonyl chloride
(D) Chloro phenyl ketone
[IIT 2006]
Which of the following reactants on reaction with conc. NaOH followed by acidification gives the following
lactone as the only product?
(A)
25.
[IIT 2006]
(B)
(C)
(D)
Identify the binary mixtures (s) that cna be separated into the individual compounds, by differential extraction,
as shown in the given scheme -
[IIT 2012]
NaOH(aq)
Compound 1
+
Compound 2
Compound 1
+
Compound 2
Binary mixture containing
Compund 1 and compound 2
NaHCO3(aq)
26.
(A) C 6H 5OH and C 6H 5COOH
(B) C 6H 5COOH and C 6H 5CH 2OH
(C) C 6H 5CH 2OH and C 6H 5OH
(D) C 6 H 5CH 2OH and C 6H 5CH 2COOH
The total number of carboxylic acid groups in the product P is
O
O
O
O
O

1. H3 O , 

P
2. O3
3. H2 O2
[JEE 2013]
ANSWER
P RE VIOU S Y EARS QU E STION S
1. (A)
2. (A)
3. (A)
10. (C)
11. (D)
12. (D)
1 3 . (A) CH3–C–COOH
CH3C–H
cis
4.(B)
5. (D)
KEY
6. (A)
CH3–C–COOH
H–C–CH3
trans
H
*
(B) CH3.CH2.C–COOH
(2-methylbutanoic acid)
CH3
1 4 . A = CH3OH
(Methanol)
B = CH3COOCH3 (Methyl ethanoate)
C = HCHO
(Methanal)
D = HCOOH
(Methanoic acid)
E = HCONH2
(Formamide or methanamide)
1 5 . (A) CH3COOCH2CH2CH2CH3
(B) C2H5OH
(C) CH3CH2CH2CH2OH
(D) CH3CHO
(E) CH3CH=CHCHO
(F) CH3COOH
1 6 . (A) HCOOH
;
(B) CO
;
(C) COOH
COOH
1 7 . (A) CH3CH2COOC2H5 (Ethyl propanoate)
(B) CH3CH2COCHCOOC2H5 Ethyl - (2-methyl-3-ketopentanoate)
CH3
(C) CH3CH2COCHCOOC2H5 (2-methyl-3-ketopentanoic acid)
CH3
1 8 . (A) (CH3CO)2O
(B) CH3COOH
(Acetic anhydride)
(Ethanoic acid)
(C) CH3COOC2H5 (Ethyl ethanoate)
(D) C2H5OH
(E) CH3COCH3
(Ethanol)
E XE R CISE -5
7.(C)
8. (D)
9. (C)
HO
OH
OH
19. A =
B=
O
CH3
H
D = H2C
H2C
H2C
O
H3C
OH
C=
O
F=
O
O
CH3
CH3
H3C
E=
N
Cl
O
O
CH3
G = H3C
O
H3C
H3C
CH3
20. X =
O
Y =
O
HO
propyl propionate
Propionic acid
H3C
OH
Z=
propan-1-ol
H5C6
O
21.
H5C6
H5C6
NH2OH
H3C
CH3 and H5C6
N
OH
H3C
CH3
N
N
HO
anti (isomers)
OH
syn
H3C
22. A =
C=
B=
O
H3C
H3C
Br
H3C
HO
HO
HO
H3C
H3C
D =
E = HCHO
CH2
C
O
F=
H3C
H3C
23.
O
H3C
O
H3C
24.
C
25.
B, D
26.
(2)
EXERCISE # JEE MAIN
ALL QUESTIONS BASED ON
HALOGEN & OXYGEN CONTAINING ORGANIC COMPOUND
1.
2.
Following reaction :
(CH3)3C–Br + H2O  (CH3)3C–OH + HBr
is an example of(A) Elimination reaction
(C) Nucleophilic substitution
1
SN reaction is easible in(A)
4.
5.
6.
[AIEEE-2002]
Cl
+ KOH
(B)
Cl + KOH
Cl + KOH
(C)
3.
[AIEEE-2002]
(B) Free radical substitution
(D) Electrophilic substitution
CH2CH2 Cl + KOH
(D)
Bottles containing C6H5I and C6H5–CH2I lost their original labels. They were labelled A and B for testing. A
and B were separately taken in a test tube and boiled with NaOH solution. The end solution in each tube was
made acidic with dilute HNO3 and then some AgNO3 solution was added. Substance B gave a yellow precipitate.
Which one of the following statements is true for this experiment.
[AIEEE-2003]
(A) A was C6H5I
(B) A was C6H5CH2I
(C) B was C6H5I
(D) Addition of HNO3 was unnecessary
The reaction of chloroform with alcoholic KOH and p-toluidine form[AIEEE-2003]
(A) H3C
CN
(B) H3C
N2Cl
(C) H3C
NHCHCl2
(D) H3C
NC
The compound formed on heating chlorobenzene with chloral in the presence of concentrated sulphuric acid
is[AIEEE-2004]
(A) Gammaxe
(B) DDT
(C) Freon
(D) Hexa chloro ethane
Among the following the one that gives positive iodoform test upon reaction with I2 and NaOH is[AIEEE-2006]
(A) CH3CH2CH(OH)CH2CH 3
(B) C 6H 5CH 2CH 2OH
CH3
(C) H3C
(D) PhCHOHCH3
OH
7.
The structure of the major product formed in the following reaction is :
Cl
[AIEEE-2006]
NaCN
DMF
I
CN
(A)
CN
(B)
Cl
(C)
CN
(D)
NC
CN
8.
CN
I
Which of the following on heating with aqueous KOH, produces acetaldehyde ?
(A) CH2ClCH2Cl
(B) CH3CHCl2
(C) CH3COCl
(D) CH3CH 2Cl
[AIEEE-2009]
9.
Maximum dehydration takes place that of -
(A)
10.
(B)
[AIEEE-2002]
(C)
(D)
Picric acid is -
[AIEEE-2002]
OH
COOH
(A)
COOH
(B)
NO2
11.
NO2
COOH
NO2
(C)
(D)
OH
NH2
NO2
An ether is more volatile than an alcohol having the same molecular formula. This is due to [AIEEE-2003]
12.
(A) Inter molecular hydrogen bonding in ethers
(B) Inter molecular hydrogen bonding in alcohols
(C) Dipolar character of ethers
(D) Alcohols having resonance structures
When CH2 = CH–COOH is reduced with LiAlH4, the compound obtained will be (A) CH3–CH2–CH2OH
13.
(C) CH3–CH2–COOH
(B) Dialdehydes
[AIEEE-2003]
(C) Diketones
(D) Carboxylic acids
Which one of the following undergoes reaction with 50% sodium hydroxide solution to give the corresponding
alcohol and acid ?
(A) Phenol
15.
[AIEEE-2003]
(D) CH 2=CH–CH 2OH
The general formula CnH 2nO2 represents
(A) Diols
14.
(B) CH3–CH2–CHO
[AIEEE-2004]
(B) Benzaldehyde
(C) Butanal
(D) Benzoic acid
Among the following compounds which can be dehydrated very easily is -
[AIEEE-2004]
OH
(A) CH3CH2CHCH
2
2CH2OH
(B) CH3CH2CH2CHCH3
CH3
(C) CH3CH2C CH2CH3
16.
(D) CH3CH2CH CH2CH2OH
OH
CH3
p-cresol reacts with chloroform in alkaline medium to give the compound A which adds hydrogen cyanide to
form, the compound B. The later on acidic hydrolysis gives chiral carboxylic acid. The structure of the carboxylic
acid is [AIEEE-2005]
CH3
CH3
CH(OH)COOH
(A)
(B)
CH(OH)COOH
OH
OH
CH3
CH3
CH2COOH
(C)
CH2COOH
OH
(D)
OH
17.
18.
HBr reacts with CH2 = CH – OCH3 under anhydrous conditions at room temperature to give (A) BrCH2CHO and CH3OH
(B) BrCH2–CH2–OCH3
[AIEEE-2006]
(C) H3C–CHBr–OCH3
(D) CH3CHO and CH3Br
The structure of the compound that gives tribromo derivative on treatment with bromine water is [AIEEE-2006]
CH2OH
CH3
CH3
CH3
OH
(A)
(B)
(C)
(D)
OH
OH
19.
20.
21.
22.
Phenol, when it first reacts with concentrated sulphuric acid and then with concentrated nitric acid, gives
[AIEEE-2008]
(A) 2, 4, 6– trinitrobenzene
(B) –nitrophenol
(C) p–nitrophenol
(D) nitrobenzene
Bakelite is obtained from phenol by reacting with
[AIEEE-2008]
(A) (CH2OH)2
(B) CH3CHO
(C) CH3COCH3
(D) HCHO
The best reagent to convert pent–3–en–2–ol into pent –3–en –2–one is [AIEEE-2005]
(A) Acidic dichromate
(B) Acidic permanganate
(C) Pyridinium chloro-chromate
(D) Chromic anhydride in glacial acetic acid
Rate of the reaction[AIEEE-2005]
O
R–C
O
+ Nu
R–C
X
23.
Nu
is fastest when X is (A) NH2
(B) Cl
In the following sequence of reactions
CH3CH2OH
24.
P + I2
A
Cl2
27.
(C) OCOR
(D) OC2H5
then compound 'D' is (C) n–propyl alcohol
[AIEEE-2007]
(D) propanal
[AIEEE-2002]
Alc.KOH
red P
(A) CH3CHCOOH
26.
Mg
HCHO
H2O
B
C
D,
Ether
(A) butanal
(B) n–butyl alcohol
End product of the following reaction is CH3CH2COOH
25.
+X
(B) CH2CH2COOH
(C) CH2= CHCOOH
(D) CH2CH–COOH
OH
Cl OH
OH
On mixing ethyl acetate with aqueous sodium chloride, the composition of the resultant solution is [AIEEE-2004]
(A) CH3COOC2H5 + NaCl
(B) CH3COONa + C2H5OH
(C) CH3COCl + C2H5OH + NaOH
(D) CH3Cl + C2H5COONa
The major product obtained on interaction of phenol with sodium hydroxide and carbon dioxide is :[AIEEE-2009]
(A) Salicylic acid
(B) Phthalic acid
(C) Benzoic acid
(D) Salicyladehyde
In Cannizzaro reaction given below :: OH
2PhCHO
PhCH 2OH + PhCO2
the slowest step is :(A) The abstraction of proton from the carboxylic group
(B) The deprotonation of PhCH 2OH
(C) The attack of : OH at the carboxyl group
(D) The transfer of hydride to the carbonyl group
[AIEEE-2009]
28.
A liquid was mixed with ethanol and a drop of concentrated H2SO4 was added. A compound with a fruity smell was formed.
The liquid was :-
[AIEEE-2009]
(A) CH3COCH3
29.
(B) CH3COOH
(C) CH3OH
(D) HCHO
From amongst the following alcohols the one that would react fastest with conc. HCl and anhydrous ZnCl 2,
is :-
[AIEEE-2010]
(A) 1–Butanol
30.
(B) 2–Butanol
(C) 2–Methylpropan–2–ol(D) 2–Methylpropanol
Sodium ethoxide has reacted with ethanoyl chloride. The compound that is produced in the above reaction
is :-
[AIEEE-2011]
(A) Ethyl chloride
31.
(B) Ethyl ethanoate
(C) Diethyl ether
(D) 2–Butanone
Phenol is heated with a solution of mixture of KBr and KBrO3. The major product obtained in the above reaction
is :-
32.
[AIEEE-2011]
(A) 4-Bromophenol
(B) 2,4,6-Tribromophenol
(C) 2-Bromophenol
(D) 3-Bromophenol
Trichloroacetaldehyde was subjected to Cannizzaro's reaction by using NaOH. The mixture of the products contains
sodium trichloroacetate and another compound. The other compound is :-
33.
(A) 2,2,2–Trichloropropanol
(B) Chloroform
(C) 2,2,2–Trichloroethanol
(D) Trichloromethanol
Silver Mirror test is given by which one of the following compounds ?
(A) Formaldehyde
34.
35.
[AIEEE-2011]
(B) Benzophenone
(C) Acetaldehyde
[AIEEE-2011]
(D) Acetone
Which of the following reagents may be used to distinguish between phenol and benzoic acid? [ A I E E E - 2 0 1 1 ]
(A) Molisch reagent
(B) Neutral FeCl 3
(C) Aqueous NaOH
(D) Tollen's reagent
Consider the following reaction :
C2H 5OH + H 2SO 4  Produce
Among the following, which one cannot be formed as a product under any conditions ?
36.
37.
(A) Ethyl-hydrogen sulphate
(B) Ethylene
(C) Acetylene
(D) Diethyl ether
Iodoform can be prepared from all except :
38.
[AIEEE-2012]
(A) Isobutyl alcohol
(B) Ethyl methyl ketone
(C) Isopropyl alcohol
(D) 3-Methyl–2–butanone
Which of the following on heating with aqueous KOH, produces acetaldehyde ?
(A) CH2ClCH2Cl
(B) CH3CHCl2
(C) CH3COCl
Me
Br
A
[AIEEE-2010]
Me
Me
Br
Br
B
C
The correct order of S N1 reactivity is
(A) A > B > C
[AIEEE-2009]
(D) CH3CH 2Cl
Consider the following bromides :-
Me
[AIEEE-2011]
(B) B > C > A
(C) B > A > C
(D) C > B > A
39.
A solution of (–) –1–chloro–1–phenylethane in toluene racemises slowly in the presence of a small amount
of SbCl 5, due to the formation of :(A) carbanion
40.
(B) Carbene
(C) carbocation
(D) free radical
Arrange the following compounds in order of decreasing acidity :
OH
OH
OH
OH
;
;
Cl
(I)
;
NO2
(III)
CH3
(II)
(A) II > IV > I > III
41.
[JEE-MAIN 2013]
OCH3
(IV)
(B) I > II > III > IV
(C) III > I > II > IV (D) IV > III > I > II
Compound (A), C8H9Br, gives a white precipitate when warmed with alcoholic AgNO3. Oxidation of (A) gives
an acid (B), C 8H 6O4. (B) easily forms anhydride on heating. Identify the compound (A) :
CH2Br
C2H5
CH2Br
(A)
(B)
CH2Br
(C)
(D)
Br
CH3
CH 3
CH 3
42.
An organic compound A upon reacting with NH3 gives B. On heating, B gives C. C in presence of KOH reacts
with Br2 to give CH3CH2NH2. A is :(A) CH3COOH
(B) CH3CH2CH 2COOH
(C) CH3–CH–COOH
(D) CH3CH2COOH
CH3
43.
An unknown alcohol is treated with the "Lucas reagent' to determine whether the alcohol is primary, secondary
or tertiary. Which alcohol reacts fastest and by what mechanism :(A) secondary alcohol by SN1
(B) tertiary alcohol by SN1
(C) secondary alcohol by SN2
(D) tertiary alcohol by SN2
Q u e.
1
2
3
4
5
6
7
8
9
10
11
12
13
Ans
B
C
B
D
D
B
C
A
B
C
B
D
D
Q u e.
14
15
16
17
18
19
20
21
22
23
24
25
26
Ans
B
C
A
D
D
Bonus
D
D
B
C
C
B
A
Q u e.
27
28
29
30
31
32
33
34
35
36
37
38
39
Ans
D
B
C
B
B
C
A,C
B
C
A
Q u e.
40
41
42
43
Ans
C
D
D
B