Meera heated a china dish containing chalk powder, common salt and ammonium chloride with inverted funnel covering the china dish. The narrow end of the funnel was blocked with a cotton plug. After a few minutes she observed that:
(a) chalk powder and common salt remain in the china dish whereas ammonium chloride gets deposited on the cooler part of the funnel.
(b) chalk powder and ammonium chloride remain in the china dish whereas common salt gets deposited on the cooler part of the funnel.
(c) ammonium chloride and common salt remain in the china dish whereas chalk powder gets deposited on the cooler part of the funnel.
(d) ammonium chloride, chalk powder and common salt fused and transformed into a black solid mass
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