1.State true or false:
(a) Formation of clouds is a reversible change
2. Classify into chemical and physical change
(a) Transpiration
3. complete the following Equation:
(a) Quick lime (CaO) + Water (H2O) --->
(b) Sulphuric acid (H2SO4) + Zinc (Zn) ----> __________+ Hydrogen
__________ + H2
(c) Copper Sulphate (CuSO4) + Iron (Fe) ----->
(d) Cacium carbonate (CaCO3) _heat_ >
(e) Carbon (C) + Sulphur (S) ---->
1. True. Formation of cloud is reversible.
2. Transpiration is a physical change.
3. CaO+ H2O --> Ca(OH)2
4. Zn+H2SO4 --> ZnSO4 +H2
5. CuSO4 +Fe--> FeSO4+Cu
6.CaCO3 +Heat --> CaO+ CO2
7.C+S-->CS2