MCQ Questions for Class 10 Science Chapter 1 Chemical Reactions And Equations
Q.1. Magnesium ribbon is rubbed before burning because it has a coating of(a) basic magnesium carbonate(b) basic magnesium oxide(c) basic magnesium sulphide(d) basic magnesium chloride Answer Answer: a Q.2. The chemical formula of lead sulphate is (a) Pb2SO4(b) Pb(SO4)2(c) PbSO4(d) Pb2(SO4)3 Answer Answer: c Q.3. When green coloured ferrous sulphate crystals are heated, the colour of the crystal changes because(a) it … Read more
