Question

For demonstrating the preparation of soap in the laboratory which of the following combinations of an oil and a base would be most suitable?
(a) Mustard oil and calcium hydroxide
(b) Castor oil and calcium hydroxide
(c) Turpentine oil and sodium hydroxide
(d) Mustard oil and sodium hydroxide (1)

Answer 1

Answer:

(C) Turpentine oil and sodium hydroxide

Answer 2

C) Turpentine oil and Sodium Hydroxide

Explanation:

To prepare soap in a laboratory, we need an acid and a base. In the options, we find sodium hydroxide and calcium hydroxide. Calcium hydroxide is not preferred as it leaves scum. So let's look at the combination having sodium hydroxide.

We have Turpentine oil and mustard oil. Mustard oil is used for cooking. So the best option would Turpentine oil and sodium hydroxide from the given options.

In general turpentine oil is mostly used for medicinal purposes. So castor oil and sodium hydroxide would be the preferred option. But since it is not given in the list of options, we will go with option C.