$\mathrm{R}-\mathrm{COOH}\to {\mathrm{RCH}}_2\mathrm{OH}$. This reduction cannot be done  by:

1. ${\mathrm{NaBH}}_4$ 

2. Na + alcohol

3. ${\mathrm{LiAlH}}_4$

4. All of the above

Which of the following reaction is used for preparation of glycol industrially?

1. 

2. 

3. 

4. none of the above

How many primary alcohol isomers can be formed with the molecular formula \(\text{C}_5\text{H}_{11}\text{OH}\)?

The solubility of phenol in water is lower. This can be attributed to:

1. Non-polar nature of phenol

2. Acidic nature of -OH group

3. Non-polar hydrocarbon part in phenol

4. None of the above

The decreasing order of boiling points of \(1^\circ\), \(2^\circ\), and \(3^\circ\) alcohol is-

1. \(1^\circ\)> \(2^\circ\)> \(3^\circ\)                            

2. \(3^\circ\)> \(2^\circ\)> \(1^\circ\)

3. \(2^\circ\)$$ $$> \(1^\circ\)$$ $$> \(3^\circ\)                             

4. None of the above

The boiling points of thio-ethers are .... than those of ether.

1. lesser                                   

2. equal

3. higher                                   

4. none of these

The most effective reagent used to converts but-2-enal to but-2-enol is-

1. KMnO₄

2. NaBH₄

3. H₂/Pt

4. K₂Cr₂O₇/H₂SO₄

23g of sodium react with CH₃OH to give-

1. 1 mole of O₂                           

2. 1/2 mole of H₂

3. 1 mole of H₂                           

4. None of the above

Th compound that will not form a yellow precipitate on heating with an alkaline solution of iodine is : 

1. CH₃CH(OH)CH₃ 

2. CH₃CH₂CH(OH)CH₃

3. CH₃OH

4. CH₃CH₂OH

Phenol and benzoic acid can be distinguished by:

1. Aqueous NaHCO₃                           

2. Aqueous NaNO₃

3. Aqueous NaOH                               

4. Conc. H₂SO₄