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ICSE Class IX Question Bank 2025 : Physics

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Practice Questions 2021-22 Class X Science (086) Theory Term I 1. Some reactions require conditions like specific temperature, pressure, etc. While writing chemical equations for such reactions, where are these conditions usually mentioned? A. B. C. D. above the arrow along with products below the plus signs before the reactants 2. Given here is the equation of a chemical reaction. magnesium + oxygen ----------> magnesium oxide Which of the following can be said about the equation? A. Only the products are written on the left side of the equation. B. Only the reactants are written on the left side of the equation. C. Both the reactants and the products are written on the left side of the equation. D. Both the reactants and the products are written on the right side of the equation. 3. Listed here is the reactivity of certain metals. Which of the above metals are likely to be obtained in their pure states from the Earth's crust? A. gold only B. sodium only C. gold and platinum D. zinc and sodium 4. Chemical equations are balanced to reflect that ___________________. A. matter can change its state during chemical reactions B. matter cannot be created or destroyed during chemical reactions C. heat is an important input in chemical reactions D. all chemical reactions are always reversible 5. Which of the following reactions is a neutralisation reaction?

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