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Q.

An element ‘X’ on expose to moist air turns reddish brown and a new compound ‘Y’ is formed. The substances ‘X’ and ‘Y’ are ____________.

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a

X = Ag, Y = Ag2s

b

  X = Cu, Y = CuO

c

X = Al, Y = Al2O3

d

X = Fe, Y = Fe2O3

answer is A.

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Detailed Solution

An element ‘X’ on expose to moist air turns reddish brown and a new compound ‘Y’ is formed. The substances ‘X’ and ‘Y’ are X = Fe, Y = Fe2O3.

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