Question

While heating a mixture of ammonium chloride and sodium chloride, it is advised to keep your face away from the apparatus because :
(a) ammonium chloride vapours may cause irritation to your eyes and nose
(b) sodium chloride vapours may cause irritation to your eyes
(c) chloride vapour may cause irritation to your eyes
(d) ammonium vapours may block your nose

CBSE Class IX Science VSA (1 Mark)

Answer 1

(a) Ammonium chloride vapours may cause irritation to your eyes and nose.