In the above compound, at which bond proton attacks fastest ?
1. A
2. B
3. C
4. D
The most stable free radical is
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Consider the following carbocations
The correct order of stability is
1. II>III>I>IV
2. III>I>II>IV
3. III>I>IV>II
4. II>IV>I>III
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Consider the following resonating structures of HCOOH
The order of stability is-
1. | I>II>III>IV | 2. | IV>I>II>III |
3. | I>III>II>IV | 4. | II>I>III>IV |
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The correct order of the rate of expulsion of hydrogen as in the above figure is:
1. 1 > 2 > 3
2. 2 > 3 > 1
3. 2 > 1 > 3
4. 3 > 2 > 1
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Which of the following carbocations is the most stable?
1. | 2. | \(\mathrm{(CH}_3){ }_3 \stackrel{\oplus}{\mathrm{C}}\) | |
3. | \(\mathrm{CH}_2=\mathrm{CH}-\stackrel{\oplus}{\mathrm{C}\mathrm{H}_2}\) | 4. | \(\left(\mathrm{CH}_3\right)_2 \stackrel{\oplus}{\mathrm{C H}}\) |
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How many chiral centers are present in 3,4-dibromo-2-pentanol?
1. 1
2. 2
3. 3
4. 4
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