Q. No.Find the correct reason for the higher boiling point of propanol compared with butane.
1. Butane molecules are held together by strong ionic forces.2. Propanol molecules form intermolecular hydrogen bonds.
3. Propanol molecules form intramolecular hydrogen bonds.
4. Butane molecules form intramolecular hydrogen bonds.
The boiling point of ethanol is higher than that of dimethyl ether due to the presence of
| 1. | H-bonding in ethanol | 2. | H-bonding in dimethyl ether |
| 3. | -CH3 group in ethanol | 4. | -CH3 group in dimethyl ether |
The below-mentioned reaction can be classified as:
1. Dehydration reaction
2. Williamson alcohol synthesis
3. Williamson ether synthesis
4. Dehydrogenation of alcohol
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 formula for allyl alcohol is-
1. CH3-CH=CHOH
2. CH2=CHCH2OH
3. HOCH2CH2CH3
4. None of the above.
Propan-1-ol may be prepared by reaction of propene with -
1. CH3COOH
2. H3BO3
3. B2H6/NaOH-H2O2
4. H2SO4/H2O
The IUPAC name of the below compound is:
| 1. | 1-Phenylpropan-2-ol | 2. | 2-Phenylpropan-2-ol |
| 3. | 1-Phenylpropan-1-ol | 4. | 2-Phenylpropan-1-ol |
The alcohol expected to have the lowest pKa value among the following is :
1. Ethanol
2. 2-Fluoro ethanol
3. 2,2,2-Trifluoroethanol
4. 2-Chloroethanol
Select the correct option based on statements below:
| Assertion (A): | p-Nitrophenol is more acidic than phenol. |
| Reason (R): | Nitro group helps in the stabilization of the phenoxide ion by dispersal of negative charge due to resonance. |
| 1. | Both (A) and (R) are True and (R) is the correct explanation of (A). |
| 2. | Both (A) and (R) are True but (R) is not the correct explanation of (A). |
| 3. | (A) is True but (R) is False. |
| 4. | (A) is False but (R) is True. |
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