In the course of an experiment, two gases X and Y were produced. X turned wet lead ethanoate to black and Y bleached moist litmus paper. What are the element(s) in each of the gases X and Y respectively?
A.
H and S;Cl
B.
H and O;Cl
C.
H and S;C and O
D.
H and Cl;S and O
Correct Answer: Option A
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