A yellow powder X gives a pungent smell if left open in air. It is prepared by the reaction of dry compound Y with chlorine gas. It is used for disinfecting drinking water. Identify X and Y.
A. X – Ca (OH)2, Y – CaO
B. X – CaOCl2, Y – Ca(OH)2
C. X – Ca(OH)2, Y – CaOCl2
D. X – Ca(OH)2, Y – Ca(OCl)2 (1)
Answer:B
A yellow powder X gives a pungent smell if left open in air. It is prepared by the reaction of dry compound Y with chlorine gas. It is used for disinfecting drinking water. Identify X and Y.
A. X – Ca (OH)2, Y – CaO B. X – CaOCl2, Y – Ca(OH)2 C. X – Ca(OH)2, Y – CaOCl2 D. X – Ca(OH)2, Y – Ca(OCl)2 (1)
Explanation: The yellow powder X is bleaching powder which is prepared by the reaction of chlorine on dry slaked lime [Ca(OH)2]. Y is dry slaked lime [Ca(OH)2]