JEE Main Chemistry question

Not in JEE Main or NEET syllabus

Which out of the following statements is not correct for anhydrous calcium chloride?

(A)It is prepared by heating hydrated calcium chloride above 533 K
(B)It is used for drying alcohols and Correct
(C)It is used as a dehydrating agent to control snow and ice on highway and pavements
(D)When mixed in concrete, it gives quicker initial setting and improves its strength

Answer: (B)

Solution

Anhydrous is indeed prepared by strongly heating the hydrate (A, correct), is used to de-ice roads/pavements (C, correct), and is used as a set-accelerator additive in concrete (D,

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Question ID VK-137958