Chemical Reactions and Equations

CBSE Class 10 · Science · 31 past questions

6 of 31 · show all

1. Q10 2025

   The correct balanced chemical equation showing exothermic reaction in which natural gas burns in air is…

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2. Q11 2025

   Consider the following chemical equation…

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3. Q12 2025

   Electrolysis of water is a decomposition reaction. The mass ratio ($M_H : M_O$) of hydrogen and oxygen gases…

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4. Q13 2025

   The products formed when Aluminium and Magnesium are burnt in the presence of air respectively are…

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5. Q14 2025

   The metals obtained from their molten chlorides by the process of electrolytic reduction are…

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6. Q15 2025

   For Questions number 17 to 20, two statements are given — one labelled as Assertion (A) and the other…

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