When wine is put in air it become sour due to:-

(1) oxidation of C₂H₅OH into CH₃COOH

(2) bacteria

(3) virus

(4) formic acid formation

Which enzyme catalyzes the conversion of glucose to ethanol?

1. Zymase

2. Diastase

3. Maltase

4. Invertase

Denatured spirit is mainly used as a:

(1) good fuel

(2) drug

(3) solvent in preparing varnishes

(4) material in the preparation of oil

The reaction of ethanol with H₂SO₄ does not give:

1. C₂H₄

2. C₂H₅OC₂H₅

3. C₂H₂

4.C₂H₅HSO₄

The products of combustion of an aliphatic thiol (RSH) at 298K are:-

(1) CO₂(l), H₂O(g)andSO₂(g)

(2) CO₂(g), H₂O(g)andSO₂(g)

(3) CO₂(l), H₂O(l)andSO₂(g)

(4) CO₂(g), H₂O(l)andSO₂(l)

Which reagent will convert propionic acid to propanol-1?

(1) KMnO₄

(2) LiAlH₄

(3) Cr₂O₃

(4) MnO₂

A liquid was mixed with ethanol and a drop of concentrated H₂SO₄ was added. A compound with a fruity smell was formed. The liquid was:

(1) HCHO

(2) CH₃COCH₃

(3) CH₃COOH

(4) CH₃OH

The main product of the following reaction is:

C₆H₅CH₂CH(OH)CH(CH₃)₂$\stackrel{\mathrm{Conc}. {\mathrm{H}}_2{\mathrm{SO}}_4}{\to }$?

(1) 

(2) 

(3) 

(4)  

Carbolic acid is the name used for:

1. Opium 

2. Phenol

3. Chloroform

4. H₂CO₃

When phenol is reacted with chloroform and an alkali like NaOH, the compound formed is salicylaldehyde. If we use pyrene in place of chloroform, the product obtained is:

1. Salicylaldehyde

2. Phenolphthalein

3. Salicylic acid

4. Cyclohexanol