Question

There are four substances W, X ,Y and Z. the substance W is a dark violet solid having
diatomic molecules. 'A 'solution of W in alcohol is used as a common antiseptic C. The
substance X is a white solid which is usually recovered from sea water on a large scale.
The substance Y is a white solid which is insoluble in water and used in the form of small
balls for the safe storage of woollen clothes. The substance Z is a yet another white solid
which is used in making commonly used dry cells.
a) Name (i) W (ii) X (iii) Y and (iv) Z.
b) Out of W, X, Y and Z, which substance / substances can undergo sublimation?
c) Which substance is organic in nature?
d) What is the name of substance C?
e) Which substance belongs to the halogen family?​

Answer 1

Answer:

(a) W is iodine, X is sodium chloride, Y is naphthalene balls, Z is ammonium chloride.

(b) The substance Y and Z can undergo sublimation.

(c) Sodium chloride is organic in nature.

(d)The substance C is iodine tincture.

(e) Ammonium chloride belongs to halogen

Answer 2

Q1. W is iodine , X is common salt that is NaCl , Y is Naphthalene and Z is NH4Cl or ammonium chloride.

Q2. Naphthalene and NH4Cl.

Q3. Ammonim chloride or NH4Cl.

Q4. Tincture of iodine.

Q5. Ammonium Chloride or NH4Cl.