Question

Colourless basic gas 'A' when passed over heated black coloured metallic oxide 'B' forms water a colourless neutral gas 'C' and pinkish red metal 'D'

(1) identify a b c and d
(2) write the balanced equation for the above reaction

Answer 1

Question No.01

      A= H2 (Hydrogen Gas Is Colorless at STP),

      B= CuO(Cupric oxide is a Black Colored Metallic Oxide)

c= neutral gas H0 hydrogen oxide

      D= Cu (Copper is a pinkish red metal)

Question No.02

The Balanced Chemical Equation of Reaction

         2CuO (s) + H2 (g) ---> 2Cu (s) + 2HO (g)