Free radical formation will take place in :
1. | |
2. | |
3. | |
4. |
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyThe arrangement in decreasing order of stability of H3, H5,(CH3)2H and (CH3)3 free radicals is-
1. H3 > H5 > (CH3)2H > (CH3)3
2. (CH3)3 > (CH3)2H > H5 > H3
3. H5 > H3 > (CH3)2H > (CH3)3
4. (CH3)3 > (CH3)2H > H3 >H5
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyWhich carbocation is the most stable among the options provided?
1. | 2. | ||
3. | 4. |
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyThe most stable carbocation among the following is:
1. | 2. | ||
3. | 4. |
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyA tertiary butyl carbocation is more stable than a secondary butyl carbocation because-
1. + R effect of groups
2. R effect of CH3 groups
3. Hyperconjugation
4. l effect of CH3 groups
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyWhich of the following statements accurately describes the stability of allyl and propyl carbocations?
1. Allyl carbocation (CH2=CH-CH2+) is more stable than propyl carbocation
2. Propyl carbocation is more stable than allyl carbocation
3. Both are equally stable
4. None of the above
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyThe species that contains only three pairs of electrons among the following is-
1. | Carbocation | 2. | Carbanion |
3. | Free radical | 4. | None of the above |
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyWhich of the following species exhibits paramagnetism?
1. | A carbocation | 2. | A free radical |
3. | A carbanion ion | 4. | All of the above |
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyThe decreasing order of the stability of the given ions is-
(I). | (II). | ||
(III). |
1. | I>II>III | 2. | II>III>I |
3. | III>I>II | 4. | II>I>III |
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyThe compound that gives the most stable carbonium ion after C- Cl bond ionisation among the following is-
1. | 2. | ||
3. | 4. |
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & Biology