Question

i) Name the industrial method for the production of hydrogen gas.

ii) Name the catalyst used in the above process.

iii) Write the balanced equation for the production of water gas.

b) i) What is meant by Period in a periodic table?

ii) State the cause for periodicity among elements in a periodic table.

c) How will you distinguish between the following pairs of substances on the basis of the

chemical tests given in brackets?

i) Zinc nitrate and Copper nitrare (Dry test tube heating)

ii) Zinc carbonate and lead carbonate (Dry heating)​

Answer 1

Answer:

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