Hamad S-BLOCK ELEMENTS 16/05/2021 A. sodium B. hydrogen C. chlorine D. oxygen Related Mcqs: Downs cell is used to prepare_________________?A. Sodium carbonate B. Sodium bicarbonate C. Sodium metal D. Sodium hydroxide... Ammonia may be prepared by heating ammonium chloride with_______________?A. Water B. NaCl C. Aqueous sodium hydroxide D. H2SO4... Which one of the following gives white precipitate with aqueous solution of BaCl2?A. NaHCO3 B. NaNO3 C. Na2CO3 D. Na2CrO4... Which element is necessary for normal leaf development ?A. Si B. Ba C. Mg D. Ca... Which of the following sulphates is not soluble in water ?A. Sodium sulphate B. Potassium sulphate C. Zinc sulphate D. Barium sulphate...
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