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

1. 

2. 

3. 

4. none of the above

The number of primary alcohol isomers of C₅H₁₁OH is -

1. 5

2. 4

3. 2

4. 3

Phenol is less soluble in water. It is due to-

1. Non-polar nature of phenol

2. Acidic nature of -OH group

3. Non-polar hydrocarbon part in it

4. None of the above

The decreasing order of boiling points of $1°$, $2°$, and $3°$ alcohol is-

1. $1°$>$2°$>$3°$                             

2. $3°$>$2°$>$1°$

3. $2°$>$1°$>$3°$                             

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

Which of the following will not form a yellow precipitate on heating with an alkaline solution of iodine?

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

Glycerol on oxidation with conc HNO₃ gives:

1. tartronic acid                               

2. mesoxalic acid

3. oxalic acid                                   

4. glyceric acid