10th Class Science Metals and Non-metals Question Bank 10th CBSE Science Metals and Non-metals

  • question_answer   A metal A, which is used in thermit process, when heated with oxygen gives an oxide B, which is amphoteric in nature. Identify A and B. Write down the reactions of oxide B with HCl and NaOH. [NCERT Exemplar]


                       A?Al; B?Al2O3 Al2O3 + 6HCl ® 2AlCl3 + 3H2O Al2O3 + 2NaOH ® 2NaA1O2 + H2O

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