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JEE Previous Year Question

$Consider the sulphides HgS,PbS,CuS, S b_{2} S_{3}, A s_{2} S_{3} and CdS. Number of these sulphides soluble in50% H N O_{3} is ____.$

Topic: JEE PYQ

Answer: 4. Full step-by-step solution below.

Correct answer: 4

Solution

(4) Pbs,CuS, A s_{2} S_{3},CdS are soluble in 50% H N O_{3} HgS, S b_{2} S_{3} are insoluble in 50% H N O_{3} So Answer is 4.

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