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NEET UG CHEMISTRY MCQ: CHEMICAL KINETICS

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The rate constant for a first order reaction which has half-life 231 s is
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Correct option: B
3×10−3 s−13 \times {10^{ - 3}}\,{s^{ - 1}}
Option B (3×10−3 s−13 \times {10^{ - 3}}\,{s^{ - 1}}) is correct because it is the rate constant calculated from the given half-life for a first-order reaction.

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If the reaction rate at a given temperature becomes slower then 1[A]2\frac{1}{{{{\left[ A \right]}^2}}} vs times are a straight line. Order of reaction is The rate constant (k′)\left( {k'} \right) of one of the reaction is found to be double that of the rate constant (k′′)\left( {k''} \right) of another reaction. Then the relationship between the corresponding activation energies of the two reaction (E′a  and  E′′a)\left( {{{E'}_a}\;\mathrm{and}\;{{E''}_a}} \right) can be represented as Acid hydrolysis of sucrose is a Order of radioactive disintegration reaction is Temperature coefficient of a reaction is 2. When temperature is increased from 30∘C  to  100∘C30^\circ C\;to\;100^\circ C, rate of the reaction increases by
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