The given apparatus shows the reaction of steam with heated solid 'X'.

The equation for the reaction is
Steam + solid 'X' `to` Solid 'Y' + Gas 'Z'
X, Y and Z are respectively

Options

A. copper, copper oxide, oxygen
B. lead, lead oxide, hydrogen
C. silver, silver oxide , oxygen
D. iron, iron oxide, hydrogen

Answer

D

Explanation

Iron neither reacts with cold water nor with hot water. It reacts only with steam to form iron oxide and hydrogen.
`undersetunderset((X))("Iron")(3Fe_(s)) + underset("Steam")(4H_(2)O_(g)) to undersetunderset("Y")("Iron (II,III) oxide")(Fe_(3)O_(4(s)))+undersetunderset("Z")("Hydrogen")(4H_(2(g)))`
Lead, copper and silver do not react even with steam.