MCQ Class 10 Science Chapter 1 Chemical Reactions and Equation Advertisement MCQ’s For All Chapters – Science Class 10th 1. The reaction Fe + CuSO₄ → FeSO₄ + Cu is:Combination reactionDouble displacement reactionDisplacement reactionNeutralisation reactionQuestion 1 of 152. Which metal can displace copper from CuSO₄ solution?SilverZincGoldMercuryQuestion 2 of 153. The reaction Na₂SO₄ + BaCl₂ → BaSO₄ + 2NaCl is:Displacement reactionDouble displacement reactionCombination reactionThermal decompositionQuestion 3 of 154. A reaction that produces an insoluble solid is called:DecompositionPrecipitationCombinationOxidationQuestion 4 of 155. Which is the white precipitate formed in reaction of BaCl₂ with Na₂SO₄?BaSO₄NaClNa₂SO₃BaCO₃Question 5 of 156. The reaction 2Cu + O₂ → 2CuO shows:Reduction of copperOxidation of copperNeutralisationElectrolysisQuestion 6 of 157. The reverse reaction CuO + H₂ → Cu + H₂O shows:Oxidation of copperReduction of copper oxideNeutralisationPrecipitationQuestion 7 of 158. In redox reactions:Only oxidation occursOnly reduction occursBoth oxidation and reduction occur simultaneouslyNeither occursQuestion 8 of 159. In the reaction ZnO + C → Zn + CO, which substance is reduced?CarbonOxygenZnOCOQuestion 9 of 1510. In the reaction MnO₂ + HCl → MnCl₂ + H₂O + Cl₂, which substance is oxidised?MnO₂HClMnCl₂H₂OQuestion 10 of 1511. Which process damages iron articles by forming rust?OxidationCorrosionRancidityDecompositionQuestion 11 of 1512. The green coating on copper articles is due to:RancidityCorrosionCombination reactionOxidation of ironQuestion 12 of 1513. Which gas is used in chip packets to prevent rancidity?OxygenCarbon dioxideNitrogenHydrogenQuestion 13 of 1514. Rancidity is caused by:Reduction of oilsOxidation of fats and oilsHydrolysis of waterEvaporation of oilQuestion 14 of 1515. Which reaction is opposite to combination reaction?Oxidation reactionDecomposition reactionDisplacement reactionDouble displacement reactionQuestion 15 of 15 Loading...
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