Question 1

Q1. The correct expression for rate of reaction is:

Accepted Answer

Option B: - d[reactant]/dt. Rate of reaction is defined as decrease in concentration of reactant per unit time.

Question 2

Q2. Which electrolyte shows maximum van't Hoff factor?

Accepted Answer

Option D: Al ₂ (SO ₄ ) ₃. Al ₂ (SO ₄ ) ₃ dissociates into 5 ions, giving highest particle number.

Question 3

Q3. In crystal field theory, octahedral splitting results in:

Accepted Answer

Option B: t2g lower, eg higher. d-orbitals split into lower t2g and higher eg levels.

Question 4

Q4. Strongest reducing agent among halides:

Accepted Answer

Option D: I ⁻. I ⁻ is most easily oxidized due to large size.

Question 5

Q5. Which polymer is biodegradable?

Accepted Answer

Option B: PHBV. PHBV is a biodegradable polyester used in medical applications.

Question 6

Q6. A first-order reaction has rate constant k. Unit of k is:

Accepted Answer

Option C: s ⁻ ¹. First-order rate constant has unit time ⁻ ¹.

Question 7

Q7. Conductivity increases with dilution because:

Accepted Answer

Option B: ions move freely. Reduced interionic attraction increases ion mobility.

Question 8

Q8. Which complex shows optical isomerism?

Accepted Answer

Option B: [Cr(en)3]3+. Chelating ligands create chiral complexes.

Question 9

Q9. Hydrogen bonding strongest in:

Accepted Answer

Option A: HF. Fluorine has highest electronegativity.

Question 10

Q10. Oxidation state of Mn in KMnO ₄ :

Accepted Answer

Option C: +7. K(+1) + Mn + 4(-2) = 0 → Mn = +7.

Question 11

Q11. Rusting is prevented by:

Accepted Answer

Option B: galvanization. Zinc coating prevents iron oxidation.

Question 12

Q12. Antihistamine drug:

Accepted Answer

Option B: Chlorpheniramine. Blocks histamine receptors in allergic reactions.

Question 13

Q13. Biomagnification is maximum in:

Accepted Answer

Option D: top carnivores. Toxic concentration increases at higher trophic levels.

Question 14

Q14. Assertion (A): Molecularity is always positive integer. Reason (R): It is based on elementary reaction step.

Accepted Answer

Option A: Both true and R explains A. Molecularity refers to actual reacting molecules.

Question 15

Q15. Assertion (A): Catalyst changes equilibrium constant. Reason (R): Catalyst lowers activation energy equally for forward and reverse reactions.

Accepted Answer

Option B: A false R true. Catalyst does not change equilibrium constant.

Question 16

Q16. Case Study: A student observes faster reaction at higher temperature. Reason:

Accepted Answer

Option B: more effective collisions. Higher temperature increases kinetic energy.

Question 17

Q17. Case Study: Electrolyte increases boiling point elevation. Reason:

Accepted Answer

Option B: more particles. More ions increase colligative effect.

Question 18

Q18. Highest conductivity:

Accepted Answer

Option C: HCl. HCl is strong electrolyte.

Question 19

Q19. Half-life of first-order reaction depends on:

Accepted Answer

Option B: temperature. Depends only on rate constant.

Question 20

Q20. Strongest intermolecular force:

Accepted Answer

Option B: NH3. NH3 exhibits hydrogen bonding.

Mock Test 10 Performance Solutions

Detailed Question Analysis

Q1. The correct expression for rate of reaction is:

Q2. Which electrolyte shows maximum van't Hoff factor?

Q3. In crystal field theory, octahedral splitting results in:

Q4. Strongest reducing agent among halides:

Q5. Which polymer is biodegradable?

Q6. A first-order reaction has rate constant k. Unit of k is:

Q7. Conductivity increases with dilution because:

Q8. Which complex shows optical isomerism?

Q9. Hydrogen bonding strongest in:

Q10. Oxidation state of Mn in KMnO 4 :

Q11. Rusting is prevented by:

Q12. Antihistamine drug:

Q13. Biomagnification is maximum in:

Q14. Assertion (A): Molecularity is always positive integer. Reason (R): It is based on elementary reaction step.

Q15. Assertion (A): Catalyst changes equilibrium constant. Reason (R): Catalyst lowers activation energy equally for forward and reverse reactions.

Q16. Case Study: A student observes faster reaction at higher temperature. Reason:

Q17. Case Study: Electrolyte increases boiling point elevation. Reason:

Q18. Highest conductivity:

Q19. Half-life of first-order reaction depends on:

Q20. Strongest intermolecular force:

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Mock Test 10 Performance Solutions

Detailed Question Analysis

Q1. The correct expression for rate of reaction is:

Q2. Which electrolyte shows maximum van't Hoff factor?

Q3. In crystal field theory, octahedral splitting results in:

Q4. Strongest reducing agent among halides:

Q5. Which polymer is biodegradable?

Q6. A first-order reaction has rate constant k. Unit of k is:

Q7. Conductivity increases with dilution because:

Q8. Which complex shows optical isomerism?

Q9. Hydrogen bonding strongest in:

Q10. Oxidation state of Mn in KMnO 4 :

Q11. Rusting is prevented by:

Q12. Antihistamine drug:

Q13. Biomagnification is maximum in:

Q14. Assertion (A): Molecularity is always positive integer. Reason (R): It is based on elementary reaction step.

Q15. Assertion (A): Catalyst changes equilibrium constant. Reason (R): Catalyst lowers activation energy equally for forward and reverse reactions.

Q16. Case Study: A student observes faster reaction at higher temperature. Reason:

Q17. Case Study: Electrolyte increases boiling point elevation. Reason:

Q18. Highest conductivity:

Q19. Half-life of first-order reaction depends on:

Q20. Strongest intermolecular force:

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