Important Properties of Compounds of Copper

Write the Physical Properties of Copper Oxide or Cupric Oxide.

Write a balanced chemical equation for the following word equation:

$\mathrm{Copper}+\mathrm{oxygen}\to \mathrm{copper}\left(\mathrm{II}\right)\mathrm{oxide}$

A substance (A) is water-insoluble, and on bubbling ${\mathrm{Cl}}_2$ gas through its suspension in water, it produces a coloured aqueous solution, forming a single product. Substance (A) may be:

Which of the following methods are not the best scientific method to test the presence of water in a liquid?

${\mathrm{CuSO}}_4 \left(\mathrm{aq}\right) \stackrel{{\mathrm{H}}_2\mathrm{S}}{\to }$$\mathrm{A}\stackrel{\mathrm{excess} \mathrm{of} \mathrm{KCN}}{\to }$$\mathrm{B}+\mathrm{C}$. The product $\mathrm{B}$and $\mathrm{C}$respectively are

Which of te following statements is incorrect?

Consider in the reaction, $2{\mathrm{CuX}}_2\underset{\mathrm{temperature}}{\overset{\mathrm{Room}}{\to }}2\mathrm{CuX}+{\mathrm{X}}_2, {\mathrm{X}}^{⊝}$ ion is ?

When $\mathrm{C}\mathrm{u}\mathrm{S}{\mathrm{O}}_4$ solution in water is treated with concentrated $\mathrm{H}\mathrm{C}\mathrm{l}$ it turns

While passing hydrogen over heated $\mathrm{C}\mathrm{u}\mathrm{O}\left(\mathrm{s}\right),$ black color is oxidized to

Copper sulphate is prepared by blowing a current of air through Cu scrap and dilute H₂SO₄. Dilute HNO₃ is also added

For  ${\text{NH}}_2\text{OH}·\text{HCl}+{\text{NaNO}}_2\to (A)\stackrel{\text{Cu}}{\to }(B)+{(X)}_{{\text{gas}}^{\prime }}$
which of the following is correct ?

CuSO₄ . 5H₂O is a:

Identify A to D in following reactions



The compounds A, B, C & D may be

Which of the following is the best scientific method to test the presence of water in a liquid?

Which of the following is formed when excess of KCN is added to aqueous solution of copper sulphate ?   

Which of the following is formed, when excess of $\mathrm{KCN}$ is added to an aqueous solution of copper sulphate?   

A black sulphide is formed by the action of H₂S on

A black sulphide is formed by the action of ${\mathrm{H}}_2\mathrm{S}$ on: