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IIT-JEE chemistry by M.K.Tiwri
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Organic Chemistry MCQs
ORGANIC CHEMISTRY

1.


a.


b.


c.


d. none



Ans : (1)




2.


a.


b.


c.


d. none



Ans : (1)



3.


a.


b.


c.


d. none of these



Ans : (1)




4.


a. Tircyclo [2,2,1,0

2,6

] heptane


b. Bicyclo [2,2,1,0

2,6

] heptane


c. Spiro [2,2,1,0

2,6

]


d. None of these



Ans : (1)







5.


a.


b.


c.


d.



Ans : (3)


Because the most acidic 'H' will be absorbed by the base.



6.


a.


b.


c.


d.



Ans : (3)





7. Which of the following compound can show chiral


a.


b.


c.


d.



Ans : (1)



8.


a.


b.


c.


d.



Ans : (3)




9.


a.


b.


c.


d.



Ans : (1)





10.


a.


b.


c.


d.



Ans : (3)





11.


a.


b.


c.


d.


e. none of these



Ans : (5)





12.


a.


b.


c.


d.


e. none of these



Ans : (5)





13.


a.


b.


c.


d. none of these



Ans : (4)





Benzene is its one of the isomers.




14.


a.


b.


c.


d.



Ans : (3)






15.


What is Y ?


a.


b.


c.


d.



Ans : (2)





16. Hydration of the carbonyl group : C = O


a. is favoured by low pH of the medium


b. is facilitated by high pH of the medium


c. attains a minimum value at a moderate pH


d. reaches a maximum value at a moderate pH


Ans : (4)




17. Identify the product Y and Z in the following reaction sequence.



a.


b.


c.


d.



Ans : (2)




18. Identify A to E in the following scheme :



a.


b. CH

2

N

2

; Ph

2

CO; EtMeCHC(OH)Ph

2

; EtMeC = CPh

2

; EtCOMe


c. EtMeC = CPh

2

; EtMeCHC((OH)Ph

2

; EtCOMe ; Ph

2

CO ; CH

2

N

2

d.



Ans : (1)





19.


a.


b.


c.


d.



Ans : (3)





20.


a.


b.


c.


d.



Ans : (3)




21. A compound (A) of formula C

3

H

6

Cl

2

on reaction with alkali can give (B) of formula C

3

H

6

O or (C) of formula C

3

H

4

. (B) on oxidation gave a compound of the formula C

3

H

6

O

2

. (C) with dilute H

2

SO

4

containing Hg

2+

ion gave (D) of formula C

3

H

6

O, which with bromine and NaOH gave the sodium salt of C

2

H

4

O

2

. Then (A) is


a. CH

3

CH

2

CHCl

2

b. CH

3

CCl

2

CH

3

c. CH

2

ClCH

2

CH

2

Cl


d. CH

3

CHClCH

2

Cl



Ans : (1)





22. If pK

a

values of alcohol, water and phenol are 17, 14 and 10 respectively then which of the following reaction is possible :


a.


b.


c.


d. None of these


Ans : (3)


The acidic character order is


alcohol< water < phenol


basic charecter order for conjugate base is:


C

2

H

5

O

-

> OH

-

> C

6

H

5

O

-

.


The reaction in between one strong acid and other weak base or vice versa is possible.Also note that phenols are acidic in nature.




23.


a.


b.


c.


d. none



Ans : (1)




24.


a.


b.


c.


d. none



Ans : (1)




25.


a.


b.


c.


d. none of these



Ans : (1, 2)
     |     

 
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