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    				| 1. | State observation for each of the following : i. Excess ammonium hydroxide solution is added to lead nitrate solution. ii. Bromine vapors are passed into a solution of ethyne in carbon tetrachloride.iii. A zinc granule is added to copper sulphate solution. iv. Zinc nitrate crystals are strongly heated. v. Sodium hydroxide solution is added to ferric chloride solution at first a little and then in excess | 
| Answer» (i) A white ppt. of lead hydroxide (ii) A colorless solution is obtained and brown color of bromine vapors disappear. (iii) A red shiny metal starts precipitating (iv) A reddish brown gas is liberated. (v) A reddish brown ppt. of ferric hydroxide is formed which remains insoluble in excess of sodium hydroxide. | |