Page 2 - Microsoft Word - Home assignment-S Block Elements
P. 2
Q16. Why does the solubility of alkaline earth metal carbonates and
sulphates in water decreases down the group?
Q17. Why are sodium and potassium stored in kerosene oil?
Q18. Why LiCl show covalent nature?
Q19. Why is the solution of Na 2CO 3 in water alkaline in nature?
Q20. Out of sodium and potassium, which is a stronger reducing
agent and why?
Q21. Why is LiF almost insoluble in water where as LiCl soluble not
only in water but also in acetone?
Q22. Write the reactions that occur in Solvay process.
Q23. What happens when:
(i)Quick lime is treated with silica.
(ii)Chlorine reacts with slaked lime.
(iii)CO 2 gas is passed through lime water.
(iv)Magnesium is burnt in water.
(v)Calcium nitrate is heated.
(vi)Sodium is dropped in water.
(vi)Sodium metal is heated in free supply of air.
(vi)Sodium peroxide is dissolved in water.
Q24. How would you explain:
(i)BeO is insoluble but BeSO4 is soluble in water.
(ii) BaO is soluble but BaSO4 is insoluble in water.
