When phenol is treated with CHCl3 and NaOH, the product formed is:
1. Benzaldehyde
2. Salicylaldehyde
3. Salicylic acid
4. Benzoic acid
The correct acidic order of the following is:
 |
 |
 |
| (I) | (II) | (III) |
1. I > II > III
2. III > I > II
3. II > III > I
4. I > III > II
Incorrect statement among the following is:
| 1. | \(FeCl_3\) is used in the detection of phenol. |
| 2. | Fehling solution is used in the detection of glucose. |
| 3. | Tollen reagent is used in the detection of unsaturation. |
| 4. | \(NaHSO_3\) is used in the detection of carbonyl compounds. |
In preparation of alkene from alcohol using which is an effective factor:
1. Porosity of
2. Temperature
3. Concentration
4. Surface area of
The correct statement among the following is:
| 1. | Any aldehyde gives secondary alcohol on reduction. |
| 2. | The reaction of vegetable oil with H2SO4 gives glycerin. |
| 3. | C2 H5OH and iodine with NaOH give iodoform. |
| 4. | Sucrose in reaction with NaCl gives invert sugar. |
Propanol has a higher boiling point than that of butane because:
1. Butane undergoes intermolecular ionic bonding
2. Propanol undergoes intermolecular H-bonding
3. Propanol undergoes intramolecular hydrogen bonding
4. Butane undergoes intermolecular H-bonding
Alcohols are comparatively more soluble in water than hydrocarbons of comparable molecular masses because:
| 1. | Alcohols form van der waal bonds with water while hydrocarbons do not |
| 2. | Alcohols form covalent bonds with water while hydrocarbons do not |
| 3. | Alcohols form ionic bonds with water while hydrocarbons do not |
| 4. | Alcohols form H-bonds with water while hydrocarbons do not |
The hydroboration-oxidation reaction is:
1. The addition of borane followed by oxidation
2. The addition of propane followed by oxidation
3. The addition of propane followed by reduction
4. The addition of borane followed by reduction
1. o-Nitrophenol
2. p-Nitrophenol
3. Both 1 and 2
4. None of the above
Ortho nitrophenol is more acidic than ortho methoxy phenol because:
| 1. | The NO2-group increases the electron density in phenol while the methoxy group decreases the electron density in phenol |
| 2. | The nitro-group is an electron-withdrawing group while the methoxy group is an electron-releasing group |
| 3. | The methoxy-group is an electron-withdrawing group while the nitro group is an electron-releasing group |
| 4. | None of the above |
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