NEET Test Series from KOTA - 10 Papers In MS WORD
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CHXII04:CHEMICAL KINETICS
320089
Consider the given figure and mark the correct option.
1 Activation energy of forward reaction is \({{\rm{E}}_{\rm{1}}}{\rm{ + }}{{\rm{E}}_{\rm{2}}}\) and product is less stable than reactant.
2 Activation energy of forward reaction is \({{\text{E}}_{\text{1}}}{\text{ + }}{{\text{E}}_{\text{2}}}\) and product is more stable than reactant.
3 Activation energy of both forward and backward reaction is \({{\text{E}}_{\text{1}}}{\text{ + }}{{\text{E}}_{\text{2}}}\) and reactant is more stable than product.
4 Activation energy of backward reaction is \({{\text{E}}_{\text{1}}}\) and product is more stable than reactant.
Explanation:
From the graph, It is clear that Activation energy of forward reaction \(=\mathrm{E}_{1}+\) \(\mathrm{E}_{2}\) The given reaction is an example of endothermic reaction so products are less stable than reactants.
CHXII04:CHEMICAL KINETICS
320090
Consider an endothermic reaction \({\text{X}} \to {\text{Y}}\) with the activation energies \({{\text{E}}_{\text{b}}}\) and \({{\text{E}}_{\text{f}}}\) for the backward and forward reactions respectively. In general
4 There is no definite relation between \(\mathrm{E}_{\mathrm{b}}\) and \(\mathrm{E}_{\mathrm{f}}\)
Explanation:
For endothermic reactions, \(\therefore \mathrm{Ea}_{\mathrm{fwd}}>\mathrm{Ea}_{\mathrm{bkwd}}\)
CHXII04:CHEMICAL KINETICS
320091
Assertion : A reaction takes place because the reacting molecules collide with each other. Reason : The rate of reaction depends on the total number of collisions per second per unit volume.
1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but Reason is correct.
Explanation:
The rate of a chemical reaction hinges on the frequency and effectiveness of high-energy collisions between reactant molecules, as only collisions with energy surpassing the activation barrier lead to effective reactions and product formation. So option (3) is correct.
CHXII04:CHEMICAL KINETICS
320092
Assertion : Most probable velocity is the velocity possessed by maximum dfraction of molecules at the same temperature. Reason : On collision, more and more molecules acquire higher speed at the same temperature.
1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but Reason is correct.
Explanation:
On collision, the velocities of the individual particles changes such that the total kinetic energy remains conserved. More and more molecules can acquire higher speed only when the temperature is raised. So option (3) is correct.
320089
Consider the given figure and mark the correct option.
1 Activation energy of forward reaction is \({{\rm{E}}_{\rm{1}}}{\rm{ + }}{{\rm{E}}_{\rm{2}}}\) and product is less stable than reactant.
2 Activation energy of forward reaction is \({{\text{E}}_{\text{1}}}{\text{ + }}{{\text{E}}_{\text{2}}}\) and product is more stable than reactant.
3 Activation energy of both forward and backward reaction is \({{\text{E}}_{\text{1}}}{\text{ + }}{{\text{E}}_{\text{2}}}\) and reactant is more stable than product.
4 Activation energy of backward reaction is \({{\text{E}}_{\text{1}}}\) and product is more stable than reactant.
Explanation:
From the graph, It is clear that Activation energy of forward reaction \(=\mathrm{E}_{1}+\) \(\mathrm{E}_{2}\) The given reaction is an example of endothermic reaction so products are less stable than reactants.
CHXII04:CHEMICAL KINETICS
320090
Consider an endothermic reaction \({\text{X}} \to {\text{Y}}\) with the activation energies \({{\text{E}}_{\text{b}}}\) and \({{\text{E}}_{\text{f}}}\) for the backward and forward reactions respectively. In general
4 There is no definite relation between \(\mathrm{E}_{\mathrm{b}}\) and \(\mathrm{E}_{\mathrm{f}}\)
Explanation:
For endothermic reactions, \(\therefore \mathrm{Ea}_{\mathrm{fwd}}>\mathrm{Ea}_{\mathrm{bkwd}}\)
CHXII04:CHEMICAL KINETICS
320091
Assertion : A reaction takes place because the reacting molecules collide with each other. Reason : The rate of reaction depends on the total number of collisions per second per unit volume.
1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but Reason is correct.
Explanation:
The rate of a chemical reaction hinges on the frequency and effectiveness of high-energy collisions between reactant molecules, as only collisions with energy surpassing the activation barrier lead to effective reactions and product formation. So option (3) is correct.
CHXII04:CHEMICAL KINETICS
320092
Assertion : Most probable velocity is the velocity possessed by maximum dfraction of molecules at the same temperature. Reason : On collision, more and more molecules acquire higher speed at the same temperature.
1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but Reason is correct.
Explanation:
On collision, the velocities of the individual particles changes such that the total kinetic energy remains conserved. More and more molecules can acquire higher speed only when the temperature is raised. So option (3) is correct.
320089
Consider the given figure and mark the correct option.
1 Activation energy of forward reaction is \({{\rm{E}}_{\rm{1}}}{\rm{ + }}{{\rm{E}}_{\rm{2}}}\) and product is less stable than reactant.
2 Activation energy of forward reaction is \({{\text{E}}_{\text{1}}}{\text{ + }}{{\text{E}}_{\text{2}}}\) and product is more stable than reactant.
3 Activation energy of both forward and backward reaction is \({{\text{E}}_{\text{1}}}{\text{ + }}{{\text{E}}_{\text{2}}}\) and reactant is more stable than product.
4 Activation energy of backward reaction is \({{\text{E}}_{\text{1}}}\) and product is more stable than reactant.
Explanation:
From the graph, It is clear that Activation energy of forward reaction \(=\mathrm{E}_{1}+\) \(\mathrm{E}_{2}\) The given reaction is an example of endothermic reaction so products are less stable than reactants.
CHXII04:CHEMICAL KINETICS
320090
Consider an endothermic reaction \({\text{X}} \to {\text{Y}}\) with the activation energies \({{\text{E}}_{\text{b}}}\) and \({{\text{E}}_{\text{f}}}\) for the backward and forward reactions respectively. In general
4 There is no definite relation between \(\mathrm{E}_{\mathrm{b}}\) and \(\mathrm{E}_{\mathrm{f}}\)
Explanation:
For endothermic reactions, \(\therefore \mathrm{Ea}_{\mathrm{fwd}}>\mathrm{Ea}_{\mathrm{bkwd}}\)
CHXII04:CHEMICAL KINETICS
320091
Assertion : A reaction takes place because the reacting molecules collide with each other. Reason : The rate of reaction depends on the total number of collisions per second per unit volume.
1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but Reason is correct.
Explanation:
The rate of a chemical reaction hinges on the frequency and effectiveness of high-energy collisions between reactant molecules, as only collisions with energy surpassing the activation barrier lead to effective reactions and product formation. So option (3) is correct.
CHXII04:CHEMICAL KINETICS
320092
Assertion : Most probable velocity is the velocity possessed by maximum dfraction of molecules at the same temperature. Reason : On collision, more and more molecules acquire higher speed at the same temperature.
1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but Reason is correct.
Explanation:
On collision, the velocities of the individual particles changes such that the total kinetic energy remains conserved. More and more molecules can acquire higher speed only when the temperature is raised. So option (3) is correct.
320089
Consider the given figure and mark the correct option.
1 Activation energy of forward reaction is \({{\rm{E}}_{\rm{1}}}{\rm{ + }}{{\rm{E}}_{\rm{2}}}\) and product is less stable than reactant.
2 Activation energy of forward reaction is \({{\text{E}}_{\text{1}}}{\text{ + }}{{\text{E}}_{\text{2}}}\) and product is more stable than reactant.
3 Activation energy of both forward and backward reaction is \({{\text{E}}_{\text{1}}}{\text{ + }}{{\text{E}}_{\text{2}}}\) and reactant is more stable than product.
4 Activation energy of backward reaction is \({{\text{E}}_{\text{1}}}\) and product is more stable than reactant.
Explanation:
From the graph, It is clear that Activation energy of forward reaction \(=\mathrm{E}_{1}+\) \(\mathrm{E}_{2}\) The given reaction is an example of endothermic reaction so products are less stable than reactants.
CHXII04:CHEMICAL KINETICS
320090
Consider an endothermic reaction \({\text{X}} \to {\text{Y}}\) with the activation energies \({{\text{E}}_{\text{b}}}\) and \({{\text{E}}_{\text{f}}}\) for the backward and forward reactions respectively. In general
4 There is no definite relation between \(\mathrm{E}_{\mathrm{b}}\) and \(\mathrm{E}_{\mathrm{f}}\)
Explanation:
For endothermic reactions, \(\therefore \mathrm{Ea}_{\mathrm{fwd}}>\mathrm{Ea}_{\mathrm{bkwd}}\)
CHXII04:CHEMICAL KINETICS
320091
Assertion : A reaction takes place because the reacting molecules collide with each other. Reason : The rate of reaction depends on the total number of collisions per second per unit volume.
1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but Reason is correct.
Explanation:
The rate of a chemical reaction hinges on the frequency and effectiveness of high-energy collisions between reactant molecules, as only collisions with energy surpassing the activation barrier lead to effective reactions and product formation. So option (3) is correct.
CHXII04:CHEMICAL KINETICS
320092
Assertion : Most probable velocity is the velocity possessed by maximum dfraction of molecules at the same temperature. Reason : On collision, more and more molecules acquire higher speed at the same temperature.
1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but Reason is correct.
Explanation:
On collision, the velocities of the individual particles changes such that the total kinetic energy remains conserved. More and more molecules can acquire higher speed only when the temperature is raised. So option (3) is correct.
