PU E 2026 Reaction Kinetics Free Quiz 1

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PU E 2026 Reaction Kinetics Free Quiz 1

PU E Quiz

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Answered: 0 / 10

Remaining: 10

Navigator 10 Q

General

General 10 MCQs

1. What is rate of reaction?

A. Change in concentration per unit time B. Speed of molecules C. Energy of reaction D. Extent of reaction

2. How is rate of reaction expressed?

A. rate = -Δ[reactant]/Δt only B. rate = -Δ[reactant]/Δt = +Δ[product]/Δt C. rate = Δ[reactant]/Δt only D. rate = -Δ[product]/Δt

3. What is the SI unit of reaction rate?

A. mol/s B. L/s C. mol·L⁻¹·s⁻¹ D. mol·L⁻¹

4. How does the rate of reaction change as the reaction proceeds?

A. Increases B. Constant C. Zero D. Decreases

5. What is instantaneous rate?

A. Rate at a particular moment B. Rate over a time interval C. Rate at the start of reaction D. Rate at the end of reaction

6. What is the rate law?

A. Rate = k[A]^m[B]^n B. Kc = [C]^c[D]^d/[A]^a[B]^b C. k = A e^(-Ea/RT) D. Rate = -Δ[A]/Δt

7. What is the order of a reaction?

A. Molecularity of the reaction B. Sum of powers of concentration terms in rate law C. Stoichiometric coefficient D. Rate constant

8. What is the rate law for a zero-order reaction?

A. Rate = k[A] B. Rate = k[A]^2 C. Rate = k D. Rate = k[A][B]

9. What is the rate law for a first-order reaction?

A. Rate = k B. Rate = k[A]^2 C. Rate = k[A][B] D. Rate = k[A]

10. What is the rate law for a second-order reaction?

A. Rate = k[A]^2 or k[A][B] B. Rate = k[A] C. Rate = k D. Rate = k[A]^3

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