Question 1

Q1. The correct unit of rate constant for a second-order reaction is:

Accepted Answer

Option C: L mol ⁻ ¹ s ⁻ ¹. For second-order reactions, k has unit L mol ⁻ ¹ s ⁻ ¹.

Question 2

Q2. Which of the following shows maximum colligative property effect (ideal case)?

Accepted Answer

Option D: 0.1 M AlCl ₃. AlCl ₃ gives 4 ions, highest van't Hoff factor.

Question 3

Q3. In crystal field theory, pairing energy is overcome when:

Accepted Answer

Option B: strong field ligand present. Strong field ligands increase Δ o causing pairing.

Question 4

Q4. Strongest oxidizing agent among halogens is:

Accepted Answer

Option D: F ₂. Fluorine has highest electronegativity.

Question 5

Q5. Which polymer is used in making surgical sutures?

Accepted Answer

Option A: Nylon-2-Nylon-6. Nylon-2-Nylon-6 is biodegradable and used medically.

Question 6

Q6. A reaction's rate doubles when concentration is doubled. Order is:

Accepted Answer

Option B: 1. Rate ∝ [A]¹ indicates first-order reaction.

Question 7

Q7. Molar conductivity increases on dilution because:

Accepted Answer

Option B: ion mobility increases. Ions move freely with reduced interionic attraction.

Question 8

Q8. Which complex shows geometrical isomerism?

Accepted Answer

Option B: [Pt(NH3)2Cl2]. Square planar complexes show cis-trans isomerism.

Question 9

Q9. Strongest hydrogen bonding is present in:

Accepted Answer

Option B: HF. F is most electronegative element.

Question 10

Q10. Oxidation state of Cr in K ₂ Cr ₂ O ₇ is:

Accepted Answer

Option C: +6. Cr is +6 in dichromate ion.

Question 11

Q11. Rusting is an example of:

Accepted Answer

Option B: oxidation. Iron is oxidized in presence of oxygen and water.

Question 12

Q12. Which drug is used as analgesic?

Accepted Answer

Option B: Paracetamol. Paracetamol relieves pain and fever.

Question 13

Q13. Biomagnification increases:

Accepted Answer

Option B: up food chain. Toxic substances accumulate at higher trophic levels.

Question 14

Q14. Assertion (A): Molecularity is always a positive integer. Reason (R): It is defined for elementary reactions only.

Accepted Answer

Option A: Both true and R explains A. Molecularity counts reacting species in a step.

Question 15

Q15. Assertion (A): Catalyst changes equilibrium constant. Reason (R): Catalyst speeds up both forward and reverse reactions equally.

Accepted Answer

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

Question 16

Q16. Case Study: A student observes faster dissolution of salt in hot water. Reason:

Accepted Answer

Option B: increased kinetic energy. Higher temperature increases particle motion.

Question 17

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

Accepted Answer

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

Question 18

Q18. Highest conductivity is shown by:

Accepted Answer

Option C: HCl. HCl is a strong electrolyte.

Question 19

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

Accepted Answer

Option B: temperature. Depends only on rate constant k.

Question 20

Q20. Strongest intermolecular force is in:

Accepted Answer

Option B: NH ₃. NH ₃ exhibits hydrogen bonding.

Mock Test 03 Performance Solutions

Detailed Question Analysis

Q1. The correct unit of rate constant for a second-order reaction is:

Q2. Which of the following shows maximum colligative property effect (ideal case)?

Q3. In crystal field theory, pairing energy is overcome when:

Q4. Strongest oxidizing agent among halogens is:

Q5. Which polymer is used in making surgical sutures?

Q6. A reaction's rate doubles when concentration is doubled. Order is:

Q7. Molar conductivity increases on dilution because:

Q8. Which complex shows geometrical isomerism?

Q9. Strongest hydrogen bonding is present in:

Q10. Oxidation state of Cr in K 2 Cr 2 O 7 is:

Q11. Rusting is an example of:

Q12. Which drug is used as analgesic?

Q13. Biomagnification increases:

Q14. Assertion (A): Molecularity is always a positive integer. Reason (R): It is defined for elementary reactions only.

Q15. Assertion (A): Catalyst changes equilibrium constant. Reason (R): Catalyst speeds up both forward and reverse reactions equally.

Q16. Case Study: A student observes faster dissolution of salt in hot water. Reason:

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

Q18. Highest conductivity is shown by:

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

Q20. Strongest intermolecular force is in:

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Mock Test 03 Performance Solutions

Detailed Question Analysis

Q1. The correct unit of rate constant for a second-order reaction is:

Q2. Which of the following shows maximum colligative property effect (ideal case)?

Q3. In crystal field theory, pairing energy is overcome when:

Q4. Strongest oxidizing agent among halogens is:

Q5. Which polymer is used in making surgical sutures?

Q6. A reaction's rate doubles when concentration is doubled. Order is:

Q7. Molar conductivity increases on dilution because:

Q8. Which complex shows geometrical isomerism?

Q9. Strongest hydrogen bonding is present in:

Q10. Oxidation state of Cr in K 2 Cr 2 O 7 is:

Q11. Rusting is an example of:

Q12. Which drug is used as analgesic?

Q13. Biomagnification increases:

Q14. Assertion (A): Molecularity is always a positive integer. Reason (R): It is defined for elementary reactions only.

Q15. Assertion (A): Catalyst changes equilibrium constant. Reason (R): Catalyst speeds up both forward and reverse reactions equally.

Q16. Case Study: A student observes faster dissolution of salt in hot water. Reason:

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

Q18. Highest conductivity is shown by:

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

Q20. Strongest intermolecular force is in:

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