- 1(current)
Q. No.In which of the following compounds, the C—Cl bond ionization shall give the most stable carbonium ion?
| 1. |  |
2. |  |
| 3. |  |
4. |  |
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & Biology| (a) | \(\left(\mathrm{CH}_3\right)_2 \stackrel{\oplus}{\mathrm{C}}-\mathrm{CH}_2-\mathrm{CH}_3 \) |
| (b) | \(\left(\mathrm{CH}_3\right)_3 \stackrel{\oplus}{\mathrm{C}} \) |
| (c) | \(\left(\mathrm{CH}_3\right)_2 \stackrel{\oplus}{\mathrm{C}}\mathrm{H} \) |
| (d) | \( \text {CH}_3 \stackrel{\oplus}{\mathrm{C}}\mathrm{H}_2\) |
| (e) | \( \stackrel{\oplus}{\mathrm{C}}\mathrm{H}_3 \) |
| 1. | e < d < c < a < b | 2. | d < e < c < a < b |
| 3. | a < e < d < c < b | 4. | e < d < c < b < a |
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & Biology\(\mathrm{CH_3-CH_3, \ CH_3-CH_2-CH_3, \ }\)
\(\mathrm{\left(CH_3\right)_2 CH-CH_3, }\) and \(\mathrm{CH_3-CH_2-CH\left(CH_3\right)_2 }\)
The increasing order of stability of the free radicals formed from homolytic fission of the above three alkanes is:
| 1. | \(\mathrm{ (CH_3)_2 \dot{C}-CH_2 CH_3<CH_3-\dot{C} H-CH_3 \\ <CH_3-\dot{C} H_2<(CH_3)_3 \dot{C} }\) |
| 2. | \( \mathrm{CH_3-\dot{C} H_2<CH_3-\dot{C} H-CH_3 \\ <\left(CH_3\right)_2 \dot{C}-CH_2 CH_3<\left(CH_3\right)_3 \dot{C}}\) |
| 3. | \(\mathrm{CH_3-\dot{C} H_2<CH_3-\dot{C} H-CH_3\\ <\left(CH_3\right)_3 \dot{C}<\left(CH_3\right)_2 \dot{C}-CH_2 CH_3 }\) |
| 4. | \(\mathrm{ \left(CH_3\right)_3 \dot{C}<\left(CH_3\right)_2 \dot{C}-CH_2-CH_3 \\ <CH_3-\dot{C} H-CH_3<CH_3-\dot{C} H_2 }\) |
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyThe most reactive compound towards electrophilic reagent among the following is:
| 1. |  |
2. |  |
| 3. |  |
4. |  |
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyThe stability of carbanions in the following:
is in the order of:
1. (1) > (2) > (3) > (4)
2. (2) > (3) > (4) > (1)
3. (4) > (2) > (3) > (1)
4. (1) > (3) > (2) > (4)
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & Biology- 1(current)
Q. No.
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