PDF chapter test TRY NOW
1. A non-metal ‘X’ exists in two different forms ‘Y’ and ‘Z. ‘Y’ is hardest natural substance, whereas ‘Z’ is good conductor of electricity. Identify X, Y and Z.
2. The following reaction takes place when aluminium powder is heated with MnO_2:
3MnO_2(s)+4Al(s)→3Mn(l)+2Al_2O_3(l)+Heat
a. Is aluminium getting reduced?
b. Is MnO_2 getting oxidized?
b. Is MnO_2 getting oxidized?
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