(i) A non-metal X exists in two different forms Y and Z. Y is the hardest natural substance whereas Z is a good conductor of electricity. Identify X, Y, Z. (ii) A element, X, on reaction with oxygen forms an oxide XO_(2). The Oxide when dissolved in water turns blue litmus red. State whether element X is a metal or a non-metal. (ii) Name the metal which is alloyed with copper to make bronze.

(i) A non-metal X exists in two different forms Y and Z. Y is the hard

1.	(i) A non-metal X exists in two different forms Y and Z. Y is the hardest natural substance whereas Z is a good conductor of electricity. Identify X, Y, Z. (ii) A element, X, on reaction with oxygen forms an oxide XO_(2). The Oxide when dissolved in water turns blue litmus red. State whether element X is a metal or a non-metal. (ii) Name the metal which is alloyed with copper to make bronze.
Answer» Solution :(i) X - Carbon, Y - Diamond, Z - GRAPHITE (ii) NON - metal (iii) TIN