(i) 2KClO₃ + Heat → 2KCl + 3O₂ (ii) MgO + H₂O → Mg (OH)₂ (iii) 4Al + 3O₂ → 2Al₂O₃ (iv) Zn + FeSO₄ ...

Class X Science MCQ Extra Questions Answers Class 10 Science Terminal Exams MCQ Solutions Class 10th Science Session 2022-23 10th Science Terminal Exam Based MCQ Extra Questions

The digestion of food is a decomposition reaction, while the others are combination reaction.