Question

A. Fill in the blanks.
1. The chemical name of rust is______.
2. The crystals of copper sulphate are_____ in colour.
3. Energy is________ in all chemicals changr
in all chemical changes
4. Bathroom fittings are electroplated with____________ to prevent rusting​

Answer 1

1. The chemical name of rust is $\color{red}{Ferric }$$\color{red}{oxide}$/$\color{red}{Iron}$$\color{red}{oxide}$

2. The crystals of copper sulphate are $\color{red}{blue}$in colour.

3. Energy is $\color{red}{released}$ in all chemical changes

4. Bathroom fittings are electroplated with $\color{red}{Chromium}$to prevent rusting