Assertion : Sulphide ores are concentrated by Froth Flotation method.
Reason : Cresols stabilise the froth in Froth Flotation method.
(i) Both assertion and reason are true and reason is the correct explanation
(ii) Both assertion and reason are true but reason is not the correct explanation
(iii) Assertion is true but reason is false.
(iv) Assertion is false but reason is true.
(v) Assertion and reason both are wrong.
NCERT Class XII
Chemistry - Exemplar Problems
Chapter 6. General Principles and Processes of Isolation of Elements