SUBJECT : CHEMISTRY

Topic : GOC
1. Which of the following statements is correct 6. The correct order of stability of given carbanions
(1) +I group stabilizes a carbanion will be
(2) +I group stabilizes a carbocation
(3) – I group stabilizes a carbocation
(1) I > II > III (2) III > II > I
(4) – I group destabilizes a carbanion
(3) I > III > II (4) II > I > III
2. Arrange the following in decreasing order of
their stability :- 7. Decreasing order of stability of given
carbocations :
(I) (II)

(III) (IV)
(a) (b)
(1) II > I > III > IV (2) IV > I > II > III
(3) IV > III > II > I (4) III > II > I > IV
3. Which of the following represents the correct
order of decreasing inductive effect: (c) (d)
(1) –
(2) –
(1) a > b > d > c (2) b > a > c > d
(3)
(3) a > b > c > d (4) a > c > b > d
(4)
8. is less stable than :
4. The inductive effect
(1) decreases with increase of distance (1)
(2) Its extent increases with increase of distance (2)
(3) Indicates the transfer of π pair of electrons
from less electronegative atom to more (3)
electronegative atom in a molecule
(4)
(4) Shows the transfer of lone pair of electrons
9. In which structure carbon does not act as a
5. Most stable anion is :
electrophile:
(1) (2) (1) CH3 – CH2 – Cl (2) CH3 – CO – CH3

(3) (4) (3) (4) CH3 – CN

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10. Most stable carbocation is: 15. Four structures are given in options (a) to (d)
(1) (2) examine them and select the aromatic structure.
(3) (4)
(a) (b)
11. Which of the following acts as a nucleophile?
(1) (2) :CCl2
(c) (d)
(3) (4)
12. Consider the following carbanions : (1) a and d (2) b and c
(3) a and b (4) a and c
(I)
16. Which statement is correct for following
(II) compound:-

(III) (I) (II)

(IV) (1) I & II are aromatic

Correct decreasing order of stability is : (2) I & II are antiaromatic
(1) II > III > IV > I (2) III > IV > I > II (3) I is aromatic and II is antiaromatic
(3) IV > I > II > III (4) I > II > III > IV (4) I is non-aromatic and II is anti-aromatic
13. Arrange the following in decreasing order of 17. Free radicals & charged species are formed in
Stability.
___& ___ cleavage respectively :-
(1) Homolytic & Homolytic
(2) Heterolytic & Homolytic
(3) Homolytic & Heterolytic
(4) Heterolytic & Heterolytic
(1) II > III > IV > I (2) III > IV > I > II 18. How many of following are electrophiles :-
(3) IV > I > II > III (4) I > III > II > IV
14. Which of the following species are (1) 6 (2) 4 (3) 3 (4) 5
antiaromatic?
19. Which of following is true statement about .
(1) It has 8 electrons in valence shell
(2) Shape is tetrahedral
(1) III and IV (2) I and III (3) Hybridisation of central atom is sp2
(3) I and II (4) I and IV (4) All are correct statements
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20. Which of the following carbocation is least 23. Which of the following compound is non-
stable? aromatic ?

(1) (2)
(1) (2)

(3) (4)

24. Which have zero inductive effect :-

(3) (4) (1) – COOH (2) – Cl
(3) – CH3 (4) – H
25. Strongest-I group is :-
(1) – OH (2) – F
21. Order of stability of carbocations follows the
order : (3) – C ≡ CH (4) – COOH
26. Which of the following is aromatic?

(1) (2)

(1) a > b > c

(3) (4) All of these
(2) c > b > a
(3) c > a > b
27. Among the following alkenes;
(4) b > a > c
1-butene; cis-2-butene; trans-2-butene
22. Among the following the aromatic compound is :- I II III
the decreasing order of stability is :-
(1) III > I > II
(1) (2) (2) III > II > I
(3) I > II > III
(4) II > I > III
28. The correct order of decreasing acidic strength of
(3) (4) trichloroacetic acid (A), trifluoroacetic acid (B),
acetic acid (C) and formic acid (D) is
(1) B > A > D > C (2) B > D > C > A
(3) A > B > C > D (4) A > C > B > D
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29. Arrange the following in correct order of acidic 33. The correct order of basic strength of following
strength :- compound will be :-

(1) I > III > II (2) II > III > I

(3) III > I > II (4) I > II > III
(1) I > II > III > IV (2) I > IV > III > II
34. Decreasing order of acid strength for the following :-
(3) II > I > III > IV (4) II > I > IV > III
30. Compare heat of hydrogenation of the following-

(1) IV > III > I > II (2) II > IV > III > I
(1) i > ii > iii (3) III > IV > II > I (4) IV > III > II > I
(2) iii > ii > i 35. Write the acidic strength order :-
(3) ii > i > iii
(4) ii > iii > i
31. Which of the following compound's is strongest (1) C > D > B > A (2) B > C > D > A
base :- (3) D > B > C > A (4) None of the above
36. Strongest base is :-
(1) (2)
(1) C6H5 – NH2 (2) pCH3OC6H4NH2
(3) mCH3OC6H4 – NH2 (4) pNO2C6H4(CH2NH2)

(3) (4) 37. The correct order of decreasing acid strength of

following carboxylic acids is

32. Choose the correct order of basic strength :

(1) C2H5 – NH2 > (C2H5)2NH > (C2H5)3N >
C6H5 – NH2
(2) (C2H5)3N > (C2H5)2NH > C2H5 – NH2 >
C6H5 – NH2
(3) (C2H5)2NH > (C2H5)3N > C2H5 – NH2 >
C6H5 – NH2
(1) III > I > IV > II (2) I > II > IV> III
(4) C6H5 – NH2 > (C2H5)2NH > (C2H5)3N >
C2H5 – NH2 (3) II > III > I > IV (4) IV > III > II > I
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38. The most stable carbocation, among the 43. Most basic nitrogen in cytosine base present in
following is. DNA is :-
⊕
(1) CH3 − CH2 − C H2
⊕
(2) (CH3 )3 C − C H − CH3
⊕
(3) CH3 − CH2 − C H − CH2 − CH3
⊕
(4) CH3 − C H − CH2 − CH2 − CH3 (1) a (2) b
39. Compare heat of combustion :- (3) c (4) All are equal basic
(a) (b) (c) 44. The acidity of protons H in given

(1) a > b > c (2) b > a > c

(3) c > b > a (4) a > c > b
40. Bond dissociation energy of C – H bond (1) a > b > c (2) b > a > c
(I) CH2=CH – CH2 – H (II) CH3CH2 – H (3) c > b > a (4) c > a > b
(III) CH3 – H (IV) 45. Which of the following compound is most basic :
(1) I > II > III > IV (2) II > I > III > IV
(3) IV > III > II > I (4) IV > II > III > I (1) (2)
41.

(3) (4)

Compare basic strength :-

46. Correct order of acidic strength of H α , H β ,
(1) b > c > d > a (2) c > b > d > a H γ is :-
(3) a > b > c > d (4) d > a > b > c
42. Hybridisation of carbon in CH3+, CH3 –
and CH2 = CH – – CH2 carbons are:
(1) sp2, sp3, sp respectively (1) H γ > H α > H β
(2) sp, sp2, sp3 respectively (2) H γ > H β > H α
(3) sp2, sp3, sp2 respectively (3) H α > H β > H γ
(4) sp2, sp2, sp3 respectively (4) H β > H α > H γ

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47. Order of acidic strength of following acids is :- 49. Given below are two statements :
Statement-I : The acidic strength of monosubstituted
nitrophenol is higher than phenol because of
electron withdrawing nitro group.
Statement-II : o-nitrophenol, m-nitrophenol and p-
(1) I > III > IV > II nitrophenol will have same acidic strength as they
(2) III > I > IV > II have one nitro group attached to the phenolic ring.
(3) I > II > IV > III In the light of the above statements, choose the most
(4) I > IV > II > III appropriate answer from the options given below :
48. Which of the following carbocation is least (1) Both statement-I and statement-II are correct.
stable? (2) Both statement-I and statement-II are incorrect.
(3) Statement-I is correct but statement-II is incorrect.
(1)
(4) Statement-I is incorrect but statement-II is correct.
50. Which of the following compound given white
(2) ppt when react with aqueous AgNO3?

(1)
(3)

(2)
(4)
(3) Both
(4) None

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