Q. No.The proposed mechanism for hydration of ethene to yield ethanol is as follows:
The wrong step in the above mechanism is:
| 1. | Step 1 | 2. | Step 2 |
| 3. | Step 3 | 4. | Both steps 2 and 3 |
| List-I | List-II | ||
| A. |  |
I. | (i) Oleum; (ii) NaOH, \(\Delta\); (iii) \(H^+\) |
| B. |  |
II. | (i) \(O_2\); (ii) \(H_2O/H^+\) |
| C. |  |
III. | (i) \(CH_3OH, H^+; \) (ii) \(H_2, \text{catalyst}\) |
| D. |  |
IV | (i) Conc. \(H_2SO_4, \Delta;\) (ii) \(H^+/H_2O\) |
1. A - I, B - III, C -IV, D - II
2. A - II, B - IV, C - III, D - I
3. A - II, B - III, C - I, D - IV
4. A - II, B - III, C - IV, D - I
Which of the following reagents is most suitable for converting cyclohexanol into cyclohexene?
| 1. | conc. HCl + ZnCl2 | 2. | conc. H3PO4 |
| 3. | HBr | 4. | conc. HCl |
Consider the following alcohols,
| I. |  |
| II. |  |
| III. |  |
| IV. |  |
Ease of dehydration of the above alcohols will be in the order of:
| 1. | I < II < III < IV | 2. | I > II > III > IV |
| 3. | III < II < I < IV | 4. | II < III < IV < I |
What is the correct order of dehydration rate for the compounds (i), (ii), and (iii) when treated with concentrated \(\text{H}_2\text{SO}_4\)?
| (i) |  |
| (ii) |  |
| (iii) |  |
1. (i) > (iii) > (ii)
2. (i) > (ii) > (iii)
3. (ii) > (i) > (iii)
4. (ii) > (iii) > (i)
Which of the following reagents causes rapid loss of optical activity in optically active 2-octanol?
| 1. | Dilute acid | 2. | Dilute base |
| 3. | Light | 4. | Humidity |
Which of the following products is not formed upon dehydration of the given compound?
| 1. |  |
2. |  |
| 3. |  |
4. |  |
| 1. | Lead compounds in liquor | 2. | Methyl alcohol in liquor |
| 3. | Ethyl alcohol in liquor | 4. | Carbonic acid in liquor |
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