Which of the following is the test to detect/confirm H2S gas?a) It turns acidified K2Cr2O7 solution to Green b) It turns acidified K2Cr2O7 solution to Violet. c) Black color with Lead acetate paper d) The Violet color compound Cr2SO43 is

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a and b are correct

a and c are correct

a and d are correct

b and c are correct

answer is B.

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Detailed Solution

It turns acidified solution to Green3SO2+K2Cr2O7+H2SO4→K2SO4+Cr2SO43+H2OPb(CH3COO)2+H2S→PbS(Black)

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