Question 1

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

Accepted Answer

Option B: mol L ⁻ ¹ s ⁻ ¹. For zero-order reactions, rate is independent of concentration, so unit is mol L ⁻ ¹ s ⁻ ¹.

Question 2

Q2. Which solution shows maximum van't Hoff factor (assuming complete dissociation)?

Accepted Answer

Option C: AlCl ₃. AlCl ₃ → Al³ ⁺ + 3Cl ⁻ gives 4 particles per formula unit.

Question 3

Q3. In crystal field splitting, octahedral complex has:

Accepted Answer

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

Question 4

Q4. The strongest reducing agent among halides is:

Accepted Answer

Option D: I ⁻. I ⁻ easily loses electrons due to large size and weak bond strength.

Question 5

Q5. Which polymer is used in bullet-proof materials?

Accepted Answer

Option C: Kevlar. Kevlar has high tensile strength and is used in protective gear.

Question 6

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

Accepted Answer

Option B: First. Rate ∝ concentration → first-order reaction.

Question 7

Q7. Conductivity of a solution increases with dilution because:

Accepted Answer

Option B: ion mobility increases. Reduced interionic attraction increases mobility.

Question 8

Q8. Which complex shows cis-trans isomerism?

Accepted Answer

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

Question 9

Q9. Hydrogen bonding is strongest in:

Accepted Answer

Option A: HF. Fluorine has highest electronegativity.

Question 10

Q10. Oxidation state of Mn in KMnO ₄ is:

Accepted Answer

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

Question 11

Q11. Corrosion of iron is fastest in presence of:

Accepted Answer

Option C: salt water. Electrolytes increase corrosion rate.

Question 12

Q12. Which drug is an antihistamine?

Accepted Answer

Option C: Chlorpheniramine. Antihistamines block histamine receptors.

Question 13

Q13. Biomagnification is highest in:

Accepted Answer

Option D: top carnivores. Toxins increase at higher trophic levels.

Question 14

Q14. Assertion (A): Molecularity is always an integer. Reason (R): It refers to number of reacting species in an elementary step.

Accepted Answer

Option A: Both true and R explains A. Molecularity is based on mechanism, not experiment.

Question 15

Q15. Assertion (A): Catalyst increases 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 constant.

Question 16

Q16. Case Study: A student observes that sugar dissolves faster in hot water. Reason:

Accepted Answer

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

Question 17

Q17. Case Study: In a reversible reaction, catalyst is added. Effect:

Accepted Answer

Option C: speeds both directions equally. Catalyst lowers activation energy equally.

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 only. t1/2 = 0.693/k.

Question 20

Q20. Strongest intermolecular force exists in:

Accepted Answer

Option B: NH3. NH3 shows hydrogen bonding.

Mock Test 06 Performance Solutions

Detailed Question Analysis

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

Q2. Which solution shows maximum van't Hoff factor (assuming complete dissociation)?

Q3. In crystal field splitting, octahedral complex has:

Q4. The strongest reducing agent among halides is:

Q5. Which polymer is used in bullet-proof materials?

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

Q7. Conductivity of a solution increases with dilution because:

Q8. Which complex shows cis-trans isomerism?

Q9. Hydrogen bonding is strongest in:

Q10. Oxidation state of Mn in KMnO 4 is:

Q11. Corrosion of iron is fastest in presence of:

Q12. Which drug is an antihistamine?

Q13. Biomagnification is highest in:

Q14. Assertion (A): Molecularity is always an integer. Reason (R): It refers to number of reacting species in an elementary step.

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

Q16. Case Study: A student observes that sugar dissolves faster in hot water. Reason:

Q17. Case Study: In a reversible reaction, catalyst is added. Effect:

Q18. Highest conductivity is shown by:

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

Q20. Strongest intermolecular force exists in:

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Mock Test 06 Performance Solutions

Detailed Question Analysis

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

Q2. Which solution shows maximum van't Hoff factor (assuming complete dissociation)?

Q3. In crystal field splitting, octahedral complex has:

Q4. The strongest reducing agent among halides is:

Q5. Which polymer is used in bullet-proof materials?

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

Q7. Conductivity of a solution increases with dilution because:

Q8. Which complex shows cis-trans isomerism?

Q9. Hydrogen bonding is strongest in:

Q10. Oxidation state of Mn in KMnO 4 is:

Q11. Corrosion of iron is fastest in presence of:

Q12. Which drug is an antihistamine?

Q13. Biomagnification is highest in:

Q14. Assertion (A): Molecularity is always an integer. Reason (R): It refers to number of reacting species in an elementary step.

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

Q16. Case Study: A student observes that sugar dissolves faster in hot water. Reason:

Q17. Case Study: In a reversible reaction, catalyst is added. Effect:

Q18. Highest conductivity is shown by:

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

Q20. Strongest intermolecular force exists in:

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