NEET UG CHEMISTRY MCQ: CHEMICAL KINETICS

1 Hard

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Analyzing +4 | -1

Select the correct statements out of I, II and III for zero order reaction.

(I) Quantity of the products formed is directly proportional to time.

(II) Larger the initial concentration of the reactant, greater the half-life period.

(III) If

50 \%

reaction takes place in

100 \mathrm{~min}, 75 \%

reaction takes place in

150 \mathrm{~min}

View answer and explanation

Correct option: D

(I), (II) and (III)

Option D ((I), (II) and (III)) is correct because all three statements are true for a zero-order reaction.

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If the reaction rate at a given temperature becomes slower then

\frac{1}{{{{\left[ A \right]}^2}}}

vs times are a straight line. Order of reaction is The rate constant

\left( {k'} \right)

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\left( {k''} \right)

of another reaction. Then the relationship between the corresponding activation energies of the two reaction

\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^\circ C\;to\;100^\circ C

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