Answer :

A. The number of molecules of water of crystallization in washing soda is One


(Formula of washing soda is Na2CO3.H2O which shows that it has 1 water of crystallization.)


B. The chemical name of baking soda is Sodium Bicarbonate.


(Baking soda – NaHCO3 which stands for Sodium bicarbonate)


C. Iodine-123 is used in treatment of hyperthyroidism.


(Hyperthyroidism occurs due to overproduction of hormones by the thyroid gland. Iodine-123 is used in the treatment of hyperthyroidism.)


D. The chemical name of Teflon is tetrafluoroethylene.


(Teflon is used for coating cooking utensils and industrial equipment to avoid sticking. It is the polymer of tetrafluoroethylene)


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