Question

21. Sodium carbonate (a) is a
transparent crystalline white solid (b)
has the formula of Na2CO3.10H2O(C)
gives acidic solution when dissolves
in water (d) prepared by reacting
with chlorine
O A. (c) and (d)
O B. (a) and (b)
O C. (a) and (c)
O D. (a), (b), (c) and (d)​

Answer 1

Answer:

O B. (a) and (b)

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D. (a), (b), (c) and (d)