The correct order of decreasing stability of the following cations is -
1. II>I>III
2. I>II>III
3. II<I<III
4. I<II<III
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyWhich of the following carbon marked with asterisk is expected to have greatest positive charge?
1.
2.
3.
4.
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyThe most stable carboxylate ion among the following is-
1.
2.
3.
4.
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyMatch the ions given in Column I with their nature-given in Column II.
Column I |
Column II |
A. |
1. Stable due to resonance |
B. |
2. Destabilised due to inductive effect |
C. |
3. Stabilised by hyperconjugation. |
D. |
4. A secondary carbocation |
Codes
A B C D
(1) 1,2 2 2 3,4
(2) 1 2,4 3 4
(3) 1 4 3 2
(4) 4 1 3 2
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyHyperconjugation involves delocalization of -
(a) Electrons of carbon-hydrogen bond of an alkyl group directly attached to an atom of unsaturated system.
(b) Electrons of carbon-hydrogen bond of alkyl group directly attached to the positively charged carbon atom.
(c) -electrons of carbon-carbon bond
(d) Lone pair of electrons.
Choose the correct option :
1. (a, b)
2. (b, c)
3. (c, d)
4. (a, c)
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & Biology