Question

Q.5 A shiny brown substance X was heated in air to give a black compound Y, Y gave back X when gas was passed through it. [3] (i) Identify X and Y. (ii) Give equation for converting X into Y and Y into X. (iii) What are the type of reactions observed?

Answer 1

Answer:

मैं नहीं समझ सका इसे कृपया मुझे माफ कर सकते हैं अगले कयुसचन

Answer 2

Answer:

The substance X is copper. On heating in air, it forms copper oxide Y. When hydrogen gas is passed over black copper oxide then it turns brown as oxygen is removed by hydrogen.