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  • CBSE 10th Chemistry | Chemical Reactions and Equations -NCERT Questions with Answers

    Chemical Reactions and Equations -NCERT Questions with Answers Question 1. Which of the statements about the reaction below are incorrect? 2PbO(s) + C(s) 2Pb(s) + CO2(g) (a) Lead is getting reduced, (b) Carbon,dioxide is getting oxidised. (c) Carbon is getting oxidised. (d) Lead oxide is getting reduced (i) (a) and (b) (ii) (a) and (c)…

    September 23, 2015
  • CBSE 10th Chemistry | Chemical Reactions -NCERT Questions with Answers

    Chemical Reactions -NCERT Questions with Answers Question 1. Why should a magnesium ribbon be cleaned before burning in air? Answer. The magnesium ribbon which we use has a coating of “basic magnesium carbonate” on its surface, which is formed by a slow action of moist air on it. Therefore before burning it in air, it…

    September 23, 2015
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