Chemical Reactions and Equations

Class 10 · Science

150 questions50 easy50 medium50 hard

Sample Questions

Q1.Rusting of iron is an example of which type of chemical change?

ADecomposition reaction
BDisplacement reaction
CCorrosion
DRancidity

Q2.Calcium hydroxide reacts with carbon dioxide to form:

ACalcium oxide and water
BCalcium carbonate and water
CCalcium bicarbonate
DCalcium sulphate and water

Q3.Which of the following is an example of a combination reaction?

ABurning of coal in oxygen
BHeating of lead nitrate
CIron nails in copper sulphate solution
DMixing barium chloride with sodium sulphate

Q4.When magnesium ribbon burns in air, it forms:

AMagnesium hydroxide
BMagnesium oxide
CMagnesium carbonate
DMagnesium chloride

Q5.What is the chemical formula for marble?

ACaO
BCa(OH)2
CCaCO3
DCaSO4

Q6.This is a sample question to preview what you'll get in the full practice test...

A. Option one
B. Option two
C. Option three
D. Option four

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Concepts Covered

Balancing Chemical EquationsChemical EquationsChemical ReactionsCombination ReactionCorrosionDecomposition ReactionDisplacement ReactionDouble Displacement ReactionElectrolysisExothermic and Endothermic ReactionsOxidation and ReductionPrecipitation ReactionRancidityRedox ReactionsThermal Decompositionactivity seriesbalancing equationscatalystschemical equationschemical formulascombination reactioncombustionconcentrationcopper reactionscorrosiondecomposition reactiondisplacement reactiondouble displacementdouble displacement reactioneffect of temperatureelectrochemical reactionselectrolytic decompositionendothermic reactionsenergy in reactionsexothermic reactionsfactors affecting reaction rategalvanisationgas evolutionhalogen reactivityindicators of chemical reactioniron reactionslaw of conservation of massmetal carbonatesmole ratiosobservationsoxidationoxidation and reductionoxidation of fatsoxidation statesoxidising agentphotolysisphotosynthesisphysical vs chemical changeprecipitation reactionprevention of corrosionprevention of rancidityrancidityreactivityredox reactionsreducing agentrespirationrusting of ironsodium reactionssolubilitystate symbolsstoichiometrysymbols in equationstarnishing of silverthermal decompositiontypes of chemical reactions

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