CBSE TEST PAPER-03 CLASS - X (Chemical Reactions and equations) 1. Take about 5 ml of dil. HCl in a test tube and add a few pieces of fine granules to it. Which gas is evolved? (a) Chlorine (b) Hydrogen (c) HCl (d) Nitrogen 2. Dissolving suger is an example of(a) Physical change (b) Chemical change (c) Redox Reaction (d) None of these. 3. Heat is evolved diving (a) Endothermic Reaction (b) Displacement Reaction (c) Combustion Reaction (d) Combination Reaction 4. Which of the following is not a balanced equation? (a) Fe + Cl2 → FeCl3 (b) Mg + CuSO4 → MgSO4 + C4 (c) NaOH + HCl → NaCl + H 2O (d) Zn + S → ZnS 5. The reaction between lead nitrate and potassium iodide present in aqueous solutions is an example of (a) Decomposition Reaction (b) Displacement Reaction (c) Double Displacement Reaction (d) Neutralisation Reaction (1) (1) (1) (1) (1)
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