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MCQs Question Bank Solutions (Competition Preparation): Chemical Kinetics | Chemistry Class 12 - NEET PDF Download

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FAQs on MCQs Question Bank Solutions (Competition Preparation): Chemical Kinetics - Chemistry Class 12 - NEET

1. What is chemical kinetics?
Chemical kinetics is the branch of chemistry that deals with the study of the rates of chemical reactions and the factors that influence these rates.
2. What are the factors that affect the rate of a chemical reaction?
Several factors can affect the rate of a chemical reaction, including temperature, concentration of reactants, surface area, presence of catalysts, and the nature of reactants.
3. How does temperature affect the rate of a chemical reaction?
Temperature is directly proportional to the rate of a chemical reaction. As temperature increases, the kinetic energy of the reactant molecules also increases, leading to more frequent and energetic collisions, which in turn increases the reaction rate.
4. What is a catalyst and how does it affect the rate of a chemical reaction?
A catalyst is a substance that increases the rate of a chemical reaction by providing an alternative reaction pathway with lower activation energy. It does not get consumed in the reaction and can be reused. Catalysts lower the energy barrier for the reaction, allowing more reactant molecules to overcome the barrier and participate in the reaction, thereby increasing the reaction rate.
5. How does concentration of reactants affect the rate of a chemical reaction?
The concentration of reactants is directly proportional to the rate of a chemical reaction. When the concentration of reactants is increased, the number of reactant molecules per unit volume also increases. This leads to more frequent collisions between the reactant molecules, resulting in a higher reaction rate.
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