C HE M IS T R Y
DPP 1
General Organic
DAILY PRACTICE PROBLEMS
Chemistry Join telegram channel- t.me/lokeshchat
Single Correct :
1. Consider the following three halides:
(1) CH3 – CH2 – Cl (2) CH2 = CH – Cl (3) C6H5 – Cl
Arrange C –Cl bond length of these compounds in decreasing order -
(1) 1 > 2 > 3 (2) 1 > 3 > 2 (3) 3 > 2 > 1 (4) 2 > 3 > 1
2. The hyperconjugative stabilities of tertiary-butyl carbocation and but-2-ene, respectively, are
due to
(1) σ → p (empty) and σ → π* electron delocalisations.
(2) σ → σ* and σ → π electron delocalisations.
(3) σ → p (filled) and σ → π electron delocalisations.
(4) p (filled) → σ* and σ → π* electron delocalisations.
3. Among the pair of ions given below, for which pair, first ion is more stable than second?
(1) and
(2) and
(3)
(4) and
4. Compare the stability of following carbocations.
(1) iii > ii >i (2) ii > iii >I (3) iii >i> ii (4) ii >i> iii
5. Consider the following carbocations, stability of carbocations increasing order
(i) (ii) (iii) (iv)
(1) (ii) < (i) < (iii) < (iv) (2) (i) < (ii) < (iii) < (iv)
(3) (iii) < (ii) < (i) < (iv) (4) (iv) < (i) < (iii) < (i)
, 6. Give the relative Stability of the following compound
(a)
(i) (ii) (iii) (iv)
(b)
(i) (ii) (iii) (iv)
(c)
(i) (ii) (iii) (iv)
7. Which of the following is an aromatic specie?
O
(1) (2) (3) (4)
8. Which of the following compound is aromatic?
⊕
(1) (2) B (3) N (4) All of these
⊕ F F H H
9. Which of the following is not aromatic compound /ion?
OH NH2
(1) (2) (3) O
(4)
10. Which specie is aromatic?
O
(1) (2) (3) (4)
: :
O O N O
H
11. Which reaction will give aromatic product ?
O O O
O
H H H H
(1) (2) (3) (4)
O
O
12.
Rate of reaction (a) and (b) is :
(1) a > b (2) a = b (3) b > a (4) None
DPP 1
General Organic
DAILY PRACTICE PROBLEMS
Chemistry Join telegram channel- t.me/lokeshchat
Single Correct :
1. Consider the following three halides:
(1) CH3 – CH2 – Cl (2) CH2 = CH – Cl (3) C6H5 – Cl
Arrange C –Cl bond length of these compounds in decreasing order -
(1) 1 > 2 > 3 (2) 1 > 3 > 2 (3) 3 > 2 > 1 (4) 2 > 3 > 1
2. The hyperconjugative stabilities of tertiary-butyl carbocation and but-2-ene, respectively, are
due to
(1) σ → p (empty) and σ → π* electron delocalisations.
(2) σ → σ* and σ → π electron delocalisations.
(3) σ → p (filled) and σ → π electron delocalisations.
(4) p (filled) → σ* and σ → π* electron delocalisations.
3. Among the pair of ions given below, for which pair, first ion is more stable than second?
(1) and
(2) and
(3)
(4) and
4. Compare the stability of following carbocations.
(1) iii > ii >i (2) ii > iii >I (3) iii >i> ii (4) ii >i> iii
5. Consider the following carbocations, stability of carbocations increasing order
(i) (ii) (iii) (iv)
(1) (ii) < (i) < (iii) < (iv) (2) (i) < (ii) < (iii) < (iv)
(3) (iii) < (ii) < (i) < (iv) (4) (iv) < (i) < (iii) < (i)
, 6. Give the relative Stability of the following compound
(a)
(i) (ii) (iii) (iv)
(b)
(i) (ii) (iii) (iv)
(c)
(i) (ii) (iii) (iv)
7. Which of the following is an aromatic specie?
O
(1) (2) (3) (4)
8. Which of the following compound is aromatic?
⊕
(1) (2) B (3) N (4) All of these
⊕ F F H H
9. Which of the following is not aromatic compound /ion?
OH NH2
(1) (2) (3) O
(4)
10. Which specie is aromatic?
O
(1) (2) (3) (4)
: :
O O N O
H
11. Which reaction will give aromatic product ?
O O O
O
H H H H
(1) (2) (3) (4)
O
O
12.
Rate of reaction (a) and (b) is :
(1) a > b (2) a = b (3) b > a (4) None
