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10A catalyst changes the rate of reaction without being permanently changed.
Manganese dioxide slows down the decomposition of hydrogen peroxide.
Increase in temperature generally increases reaction rate.
Pressure mainly affects reactions involving solids.
Greater surface area increases reaction rate.
Negative catalysts increase the rate of reaction.
Light can increase the rate of some chemical reactions.
Hydrogen peroxide decomposes faster in presence of MnO₂.
Cold water makes vitamin C react faster than hot water.
Gas reactions generally become faster at higher pressure.
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Which of the following is a positive catalyst?
Increasing temperature generally:
Which factor mainly affects gaseous reactions?
Powdered reactants react faster because of:
Which is a negative catalyst?
Hydrogen peroxide breaks down into:
Which factor helps in photosynthesis reaction?
Vitamin C reacts faster in:
Catalyst is used to:
Higher pressure causes gas reactions to:
A substance that changes the rate of reaction is called ______
MnO₂ is a ______ catalyst
The rate of reaction increases with increase in ______
Gas reactions are affected by ______
Powder form has more ______ area
Light increases rate in some ______ reactions
Hydrogen peroxide decomposes into water and ______
Phosphoric acid acts as a ______ catalyst
Hot water increases reaction ______
Catalyst does not undergo ______ chemical change