NEET Chemistry MCQ: NCERT Collision Theory | NEET.Guide Questions

For a reaction with an activation energy ( $E_a$ ) of 50 kJ/mol, how much would a 10°C increase in temperature increase the rate constant, according to the Arrhenius equation (assuming $ext{R} = 8.314 ext{ J mol}^{-1} ext{K}^{-1}$ ) at room temperature (approx. 300K)?

A

Approximately half

B

Approximately double

C

Approximately quadruple

D

Negligible change

Question Tags

📚 Subject:Chemistry

📑 Chapter:Chemical Kinetics

🎯Topic:Collision Theory

🎓 Ncert Level:Application

🎯Difficulty :Hard

⚡ Time Required :2 mins

🔄Ncert Concepts :Collision Theory, Arrhenius Equation, Activation Energy

Related Questions

The ${E_a}$ of exothermic reaction, $A o B$ is $80\,\,KJ/mol$ . Heat of reaction is $20\,\,KJ/mol$ . ${E_a}$ for the reaction $B o A$ will be

A

$100\,\,KJ/mol$

B

$20\,\,KJ/mol$

C

$80\,\,KJ/mol$

D

$60\,\,KJ/mol$

Question Tags

📚 Subject:Chemistry

📑 Chapter:Chemical Kinetics

🎯Topic:Collision Theory

🎓 Ncert Level:Application

🎯Difficulty :Medium

⚡ Time Required :2 mins

🔄Ncert Concepts :Activation Energy, Enthalpy Change, Exothermic Reaction

If the orientation of colliding molecules is not proper, the collision is termed as:

A

Effective collision

B

Ineffective collision

C

Elastic collision

D

Inelastic collision

Question Tags

📚 Subject:Chemistry

📑 Chapter:Chemical Kinetics

🎯Topic:Collision Theory

🎓 Ncert Level:Remembering

🎯Difficulty :Easy

⚡ Time Required :1 mins

🔄Ncert Concepts :Collision Theory, Effective Collision, Ineffective Collision

Which factor has the LEAST impact on the rate of a reaction involving large, complex biomolecules?

A

Presence of a catalyst

B

Substrate concentration

C

Temperature

D

Reactant molecular weight

Question Tags

📚 Subject:Chemistry

📑 Chapter:Chemical Kinetics

🎯Topic:Collision Theory

🎓 Ncert Level:Evaluating

🎯Difficulty :Hard

⚡ Time Required :1.5 mins

🔄Ncert Concepts :Collision Theory, Steric Hindrance, Biomolecules

Consider two reactions, A and B. Reaction A has a higher activation energy than reaction B. Which statement is most likely true?

A

Reaction A will proceed faster than reaction B at the same temperature.

B

Both reactions will proceed at the same rate at the same temperature.

C

Reaction B will proceed faster than reaction A at the same temperature.

D

The relative rates of reactions A and B cannot be predicted based on activation energy alone.

Question Tags

📚 Subject:Chemistry

📑 Chapter:Chemical Kinetics

🎯Topic:Collision Theory

🎓 Ncert Level:Application

🎯Difficulty :Medium

⚡ Time Required :1 mins

🔄Ncert Concepts :Collision Theory, Activation Energy, Reaction Rate

In an Arrhenius plot for a reaction, the slope is found to be $-12 imes 10^3 K$ . If the gas constant $R$ is $8.314 \ \rm{J} \ {\rm{K}}^{-1} \rm{mol}^{-1}$ , what is the activation energy ( $E_a$ ) of the reaction in $\rm{kJ/mol}$ ?

A

75.2 kJ/mol

B

88.5 kJ/mol

C

92.3 kJ/mol

D

99.8 kJ/mol

Question Tags

📚 Subject:Chemistry

📑 Chapter:Chemical Kinetics

🎯Topic:Collision Theory

PYQ YEAR: 2021

🎓 Ncert Level:Application

🎯Difficulty :Hard

⚡ Time Required :2 mins

🔄Ncert Concepts :Chemical Kinetics, Arrhenius Equation

The minimum energy required for a reaction to occur is called:

A

Kinetic energy

B

Potential energy

C

Activation energy

D

Ionization energy

Question Tags

📚 Subject:Chemistry

📑 Chapter:Chemical Kinetics

🎯Topic:Collision Theory

🎓 Ncert Level:Remembering

🎯Difficulty :Easy

⚡ Time Required :1 mins

🔄Ncert Concepts :Collision Theory, Activation Energy

For an endothermic reaction

A

${E_a} > \Delta H$

B

${E_a} < \Delta H$

C

${E_a} = \Delta H$

D

None

Question Tags

📚 Subject:Chemistry

📑 Chapter:Chemical Kinetics

🎯Topic:Collision Theory

🎓 Ncert Level:Understanding

🎯Difficulty :Easy

⚡ Time Required :2 mins

🔄Ncert Concepts :Activation Energy, Enthalpy Change, Endothermic Reactions

Which statement is not correct?

A

For endothermic reactions, heat of reaction is lesser than energy of activation

B

For exothermic reactions, heat of reaction is more than energy of activation

C

For exothermic reactions energy of activation is less in forward reaction than in backward reaction

D

For endothermic reactions energy of activation is more in forward reaction than in backward reaction

Question Tags

📚 Subject:Chemistry

📑 Chapter:Chemical Kinetics

🎯Topic:Collision Theory

🎓 Ncert Level:Analyzing

🎯Difficulty :Medium

⚡ Time Required :3 mins

🔄Ncert Concepts :endothermic reactions, exothermic reactions, activation energy, heat of reaction

Which increases on increase of temperature?

A

Rate of reaction

B

Activation energy

C

Equilibrium constant for an exothermic reaction

D

Concentration of reactants

Question Tags

📚 Subject:Chemistry

📑 Chapter:Chemical Kinetics

🎯Topic:Collision Theory

🎓 Ncert Level:Understanding

🎯Difficulty :Easy

⚡ Time Required :2 mins

🔄Ncert Concepts :Arrhenius equation, Collision theory, Rate constant, Activation energy, Temperature dependence of reactions

For producing the effective collision, the colliding molecules must possess

A

A certain minimum amount of energy

B

Energy equal or greater than threshold energy

C

Proper orientation

D

Threshold energy as well as proper orientation

Question Tags

📚 Subject:Chemistry

📑 Chapter:Chemical Kinetics

🎯Topic:Collision Theory

🎓 Ncert Level:Understanding

🎯Difficulty :Easy

⚡ Time Required :2 mins

🔄Ncert Concepts :Collision Theory, Activation Energy, Orientation Factor

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