Question
When ethanol is heated with concentrated sulphuric acid at 170°C, it gets converted into ethene. In this reaction, concentrated sulphuric acid acts as:
  1. Oxidising agent.
  2. Catalyst.
  3. Dehydrating agent.
  4. Reducing agent.

Answer

  1. Dehydrating agent.

Explanation:

Sulphuric acid acts as a dehydrating agent as it removes water molecules from the alcohol (ethanol), and converts it to ethane.

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Similar questions

Use of a mild base like _____on the stung area gives relief.
In order to prevent the spoilage of potato chips, they are packed in plastic bags in an atmosphere of:
While performing the experiment with raisins to determine the percentage of water absorbed by them, a student made following measurements:

  1. Mass of water in the beaker = 40 g.
  2. Mass of raisins before soaking = 5 g.
  3. Mass of raisins after soaking for 2 hours = 8 g.
  4. Mass of water left in the beaker after the experiment = 35 g.

The percentage of water absorbed by raisins is:

If copper is kept open in air, it slowly loses its shining brown surface and gains a green coating. It is due to the formation of:
Which of the following alloys contains mercury as one of the constituents?
  1. Stainless steel.
  2. Solder.
  3. Duralumin.
  4. Zinc amalgam.
The colour of raisins as used in the experiment, 'to determine the percentage of water absorbed by raisins' was.
The molecular formula of a homologue of butane is:
  1. C4H8
  2. C3H6
  3. C4H6
  4. C3H8
Barium chloride on reacting with ammonium sulphate forms barium sulphate and ammonium chloride. Which of
the following correctly represents the type of the reaction involved?
i. Displacement reaction
ii. Precipitation reaction
iii. Combination reaction
iv. Double displacement reaction
A saturated hydrocarbon has fifty hydrogen atom in its molecule. The number of carbon atoms in its molecule will be:
  1. Twenty five.
  2. Twenty four.
  3. Twenty six.
  4. Twenty seven.
Which of the following burns by producing a yellow, luminous flame?