1.

Choose from the following list of substances, as to what matches the description from (i) to (v) given below: [Acetylene gas, aqua fortis, coke, brass, barium chloride, bronze, platinum]. 1. An aqueous salt solution used for testing sulphate radical. 2. A catalyst used in the manufacture of nitric acid by Ostwald’s process. 3. A black powdery substance used for the reduction of zinc oxide during its extraction. 4. A gaseous hydrocarbon commonly used for welding purposes. 5. The substance is an alloy of zinc, copper and tin.

Answer»

1. Barium chloride 

2. Platinum 

3. Coke 

4. Acetylene gas 

5. Bronze



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