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True/False: Chemical Kinetics & Nuclear Chemistry | JEE Advanced Notes | EduRev

Class 12 Chemistry 35 Years JEE Mains &Advance Past yr Paper

JEE : True/False: Chemical Kinetics & Nuclear Chemistry | JEE Advanced Notes | EduRev

The document True/False: Chemical Kinetics & Nuclear Chemistry | JEE Advanced Notes | EduRev is a part of the JEE Course Class 12 Chemistry 35 Years JEE Mains &Advance Past yr Paper.

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True / False

1. For a first order reaction, the rate of the reaction doubles as the concentration of the reactant (s) doubles. (1986 - 1 Mark)

Ans: True

Solution: True : The rate of reaction of first order is directly proportional to the concentration of reacting substance

2. Catalyst makes a reaction more exothermic. (1987 - 1 Mark)

Ans: False

Solution: False : Catalyst does not make a reaction more exothermic, but decreases the activation energy and hence increase the
rate of reaction.

3. Catalyst does not affect the energy of activation in a chemical reaction. (1989 - 1 Mark)

Ans: False

Solution: False : Catalyst lowers the energy of activation and therefore influences the rate as well as rate constant of the reaction.

4. In β-emission from a nucleus the atomic number of the daughter element decreases by one. (1990 - 1 Mark)

Ans: False

Solution: False : In β-emission True/False: Chemical Kinetics & Nuclear Chemistry | JEE Advanced Notes | EduRev the atomic number of the daughter nuclei increases by 1.

5. The rate of an exothermic reaction increases with increasing temperature. (1990 - 1 Mark)

Ans: True

Solution: True : The rate of a reaction increases with increase in temperature because at higher temperature more number of
molecules attain the activation energy.

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