(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. Identity X, Y, Z.(ii) A element, X, on reaction with oxygen forms an oxide XO2. The oxide when dissolved in water turns blue litmus red. State whether element X is a metal or a non-metal.(iii) Name the metal which is alloyed with copper to make bronze.
Answer» (i) X - Carbon, Y - Diamond, Z - Graphite (ii)Non-metal (iii)Tin.

(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. Identity X, Y, Z.(ii) A element, X, on reaction with oxygen forms an oxide XO2. The oxide when dissolved in water turns blue litmus red. State whether element X is a metal or a non-metal.(iii) Name the metal which is alloyed with copper to make bronze.

Answer»

(i) X - Carbon, Y - Diamond, Z - Graphite

(ii)Non-metal

(iii)Tin.