The best reagent to convert pent-3-en-2-ol into pent-3-en-2-one is:

1. Acidic KMnO₄

2. Alkaline K₂Cr₂O₇

3. Chromium anhydride in glacial acetic acid

4. Pyridinium Chlorochromate

Absolute alcohol contains:

1. 40% H₂O                         

2. 10% H₂O

3. 5% H₂O                           

4. 100% C₂H₅OH

Dialkyl sulphides are known as:

1. sulphonal                         

2. mercaptan

3. thioethers                       

4. thioesters

The major product of the following reaction is-

1. a hemiacetal                 

2. an acetal

3. an ether                       

4. an ester

What is formed when a primary alcohol undergoes catalytic dehydrogenation?               

1. Aldehyde           

2. Ketone         

3. Alkene           

4. Acid

Diethyl ether absorbs oxygen to form:

1. red colored sweet smelling compound

2. acetic acid

3. ether suboxide

4. ether peroxide

Fenton's reagent is:

1. H₂O + FeSO4                     

2. H₂O₂ + FeSO₄

3. H₂O₂ + ZnSO₄                   

4. NaOH + FeSO₄

Propan-1-ol may be prepared by reaction of propene with -              

1. CH₃COOH                                         

2. H₃BO₃

3. B₂H₆/NaOH-H₂O₂                               

4. H₂SO₄/H₂O     

The product A in the below mentioned reaction is:
 \(\xrightarrow[]{H_{2}O/H^{+}} \ \underset{(major)}{A} \ + \ \underset{(minor)}{B}\)

1.		2.
3.		4.

The correct order of decreasing acidic strength of the above compounds is -

1. III>I>II>IV                         

2. IV>III>I>II

3. II>IV>I>III                         

4. I>II>III>IV