1. | 2. | ||
3. | 4. |
1. | \(\mathrm{HC\equiv C^-~Na^+}\) | 2. | |
3. | 4. | \(\mathrm{C_4H_{10}}\) |
Statement I | The boiling points of aldehydes and ketones are higher than hydrocarbons of comparable molecular masses because of weak molecular association in aldehydes and ketones due to dipole-dipole interactions. |
Statement II | The boiling points of aldehydes and ketones are lower than the alcohols of similar molecular masses due to the absence of H-bonding. |
1. | Statement I is incorrect but Statement II is correct. |
2. | Both Statement I and Statement II are correct. |
3. | Both Statement I and Statement II are incorrect. |
4. | Statement I is correct but Statement II is incorrect. |
The correct IUPAC name of the following compound is:
1. | 2-ethylhex-3-en-4-one | 2. | 4-methylhex-3-en-2-one |
3. | 4-ethylpent-3-en-2-one | 4. | 3-methylhex -3-en-4-one |
The product(s) formed from the following reaction is/are:
1. | RCOOH only |
2. | RCH2COOH only |
3. | |
4. | RCOOH and RCH2COOH |
1. | 2. | ||
3. | 4. |
The intermediate compound 'X' in the following chemical reaction is :
1. | |
2. | |
3. | |
4. |
The product 'X' in the below mentioned reaction is:
1. | 2. | ||
3. | 4. |
1. Dichloromethyl cation \((^{+}CHCl_{2})\)
2. Formyl cation \((^{+}CHO)\)
3. Dichloromethyl anion \((^{-}CHCl_{2})\)
4. Dichlorocarbene (:CCl2)
Carboxylic acids have higher boiling points than aldehydes, ketones and even alcohols of comparable molecular mass. It is due to:
1. | Formation of intramolecular H-bonding |
2. | Formation of carboxylate ion |
3. | More extensive association of carboxylic acid via van der waals force of attraction |
4. | Formation of intermolecular H-bonding |