How many stages is the ‘salt cake’ method performed in?(a) 1(b) 3(c) 2(d) 4This question was posed to me in an online interview.My doubt is from P-Block Elements in portion P-Block Elements of Chemistry – Class 12

How many stages is the ‘salt cake’ method performed in?(a) 1(b) 3(

1.	How many stages is the ‘salt cake’ method performed in?(a) 1(b) 3(c) 2(d) 4This question was posed to me in an online interview.My doubt is from P-Block Elements in portion P-Block Elements of Chemistry – Class 12
Answer» Right option is (c) 2 The explanation: The ‘salt cake’ method is an endothermic REACTION. It is performed in two stages. The first stage INVOLVES the reaction between rock salt and SULPHURIC acid at 420K and in the second stage, the product of the first stage is HEATED to a temperature of 823K so that it further reacts with sulphuric acid.

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