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Q.

Two colorless solutions X and Y were mixed together. On mixing, a yellow precipitate Z was formed. Which of the following statements is correct regarding X, Y, and Z?

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a

X and Y were lead nitrate and potassium iodide solutions respectively. The yellow precipitate Z was lead iodide. 

b

X and Y were potassium chloride solution and water respectively. The yellow precipitate Z was of chloride ions.

c

X and Y were sodium hydroxide solution and hydrochloric acid respectively and the yellow precipitate Z was sodium chloride.

d

X and Y were potassium hydroxide solution and nitric acid respectively and the yellow precipitate Z was potassium nitrate.

answer is A.

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Detailed Solution

Here except for lead iodide remaining chloride ions, sodium chloride, and potassium nitrate precipitates are white in color. So, the correct answer is A.

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