For goldplating on a copper chain, the substance required in the form of solution is

When an iron nail is immersed in copper sulphate solution, the colour of solution changes from blue to green colour, The substance formed is the solution is_________

A small amount of a substance X is taken in a beaker and dilute hydrochloric acid is added to it slowly while stirring. The colour of the solution turns blue green. Select the correct statements: I. The substance X is copper oxide II. The substance X is iron oxide III. The blue green colour of the solution is due to the formation of copper chloride. IV. The blue green colour of the solution is due to the formation of copper sulphate.

A substance which forms micelles the solution contains

A substance which forms micelles in solutions contains

When hydrogen gas is passed over heated copper (II) oxide, copper and steam are formed. Write the balanced chemical equation for this reaction and state (i) the substance oxidised and (ii) the substance reduced in the reaction.

When hydrogen gas is passed over heated copper (II) oxide, copper and steam are formed. Write the balanced chemical equation for this reaction and state (i) the substance oxidized and (ii) the substance reduced in the reaction.

When hydrogen gas is passed over heated copper (II) oxide, copper and steam are formed. Write the balanced chemical equation for this reaction and state (i) the substance oxidized and (ii) the substance reduced in the reaction.