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Tag: Class 10 Science

  • CLASS 10 SCIENCE, S. CHAND TEXTBOOK QUESTIONS AND ANSWERS (11-20)

    Very short answer type questions: 11) Write the balanced chemical equations for the following reactions: a) Calcium hydroxide + Carbon dioxide          —->        Calcium carbonate + Water Ans) Ca(OH)2 + CO2     —->    CaCO3  + H2O b) Aluminium + Copper chloride          —->        Aluminium chloride + Copper Ans) 2Al + 3 CuCl2           —->          2AlCl3 + 3Cu 12) Complete and balance the following equations: a)…

  • CLASS 10 SCIENCE, S. CHAND TEXTBOOK QUESTIONS AND ANSWERS

    Very short answer type questions (1-10): 1) Why is respiration considered an exothermic process? Ans)  Respiration is considered as an exothermic process because energy is released during respiration. C6H12O6 + 6O2      —–>    6CO2 + 6H2O + energy 2) On what basis is a chemical equation balanced? Answer: A chemical equation is balanced on the basis of Law of conservation…