Question

Q.4 Name or state the following.
1. An efflorescent decahydrate salt.
2. A deliquescent salt of a trivalent metal.
3. A liquid hygroscopic substance.
4. A salt whose solubility decreases with rise in temperature of the solvent water.
5. A substance added to remove both temporary & permanent hardness in water.​

Answer 1

Answer

1.Na2CO3.10H2O

2.FeCl3

3.conc.H2SO4

4.CaSO4

5.by addition of washing soda

Explanation:

Answer 2

Answer:

1)Na2CO3.10H2O

2)aluminium chloride,sodium nitrate

3)

eathanol,methanol

4)lithium carbonate

5)Na2CO3