Question 1

Q1. The correct expression for rate of reaction in terms of disappearance of reactant A is:

Accepted Answer

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

Question 2

Q2. Which electrolyte has the highest degree of dissociation?

Accepted Answer

Option B: HCl. HCl is a strong acid and fully ionizes in solution.

Question 3

Q3. In octahedral complexes, CFSE is maximum for:

Accepted Answer

Option B: low-spin d ⁶. Low-spin d ⁶ has maximum pairing and stabilization.

Question 4

Q4. Which compound shows strongest hydrogen bonding?

Accepted Answer

Option B: H2O. O–H bond is highly polar, leading to strong hydrogen bonding.

Question 5

Q5. Oxidation state of S in H2SO4 is:

Accepted Answer

Option C: +6. 2(+1) + S + 4(-2) = 0 → S = +6.

Question 6

Q6. A reaction has rate law: Rate = k[A]². Order is:

Accepted Answer

Option C: 2. Sum of powers of concentration gives order = 2.

Question 7

Q7. Molar conductivity increases on dilution because:

Accepted Answer

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

Question 8

Q8. Which complex shows linkage isomerism?

Accepted Answer

Option B: [Co(NO2)(NH3)5]2+. NO2- can bind through N or O atoms.

Question 9

Q9. Strongest oxidizing agent among halogens:

Accepted Answer

Option D: F2. Fluorine has highest electronegativity.

Question 10

Q10. Which polymer is biodegradable?

Accepted Answer

Option C: PHBV. PHBV is a biodegradable polyester.

Question 11

Q11. Rusting of iron requires:

Accepted Answer

Option C: oxygen + water. Both oxygen and moisture are essential.

Question 12

Q12. Which drug is an antacid?

Accepted Answer

Option B: Ranitidine. Ranitidine reduces gastric acid secretion.

Question 13

Q13. Biomagnification increases along:

Accepted Answer

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

Question 14

Q14. Assertion (A): Molecularity is always positive integer. Reason (R): It is determined from balanced chemical equation.

Accepted Answer

Option C: A true R false. Molecularity is from elementary step, not balanced equation.

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 constant.

Question 16

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

Accepted Answer

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

Question 17

Q17. Case Study: Addition of electrolyte increases colligative properties. Reason:

Accepted Answer

Option B: increases particle number. More particles lead to higher effect.

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. t1/2 depends only on rate constant k.

Question 20

Q20. Strongest intermolecular force is found in:

Accepted Answer

Option B: NH3. NH3 shows hydrogen bonding.

Mock Test 07 Performance Solutions

Detailed Question Analysis

Q1. The correct expression for rate of reaction in terms of disappearance of reactant A is:

Q2. Which electrolyte has the highest degree of dissociation?

Q3. In octahedral complexes, CFSE is maximum for:

Q4. Which compound shows strongest hydrogen bonding?

Q5. Oxidation state of S in H2SO4 is:

Q6. A reaction has rate law: Rate = k[A]2. Order is:

Q7. Molar conductivity increases on dilution because:

Q8. Which complex shows linkage isomerism?

Q9. Strongest oxidizing agent among halogens:

Q10. Which polymer is biodegradable?

Q11. Rusting of iron requires:

Q12. Which drug is an antacid?

Q13. Biomagnification increases along:

Q14. Assertion (A): Molecularity is always positive integer. Reason (R): It is determined from balanced chemical equation.

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 reaction rate at higher temperature. Reason:

Q17. Case Study: Addition of electrolyte increases colligative properties. Reason:

Q18. Highest conductivity is shown by:

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

Q20. Strongest intermolecular force is found in:

ExamSpark Quick Chemistry Revision Signals

Quick Links & ExamSpark Resources

Mock Test 07 Performance Solutions

Detailed Question Analysis

Q1. The correct expression for rate of reaction in terms of disappearance of reactant A is:

Q2. Which electrolyte has the highest degree of dissociation?

Q3. In octahedral complexes, CFSE is maximum for:

Q4. Which compound shows strongest hydrogen bonding?

Q5. Oxidation state of S in H2SO4 is:

Q6. A reaction has rate law: Rate = k[A]2. Order is:

Q7. Molar conductivity increases on dilution because:

Q8. Which complex shows linkage isomerism?

Q9. Strongest oxidizing agent among halogens:

Q10. Which polymer is biodegradable?

Q11. Rusting of iron requires:

Q12. Which drug is an antacid?

Q13. Biomagnification increases along:

Q14. Assertion (A): Molecularity is always positive integer. Reason (R): It is determined from balanced chemical equation.

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 reaction rate at higher temperature. Reason:

Q17. Case Study: Addition of electrolyte increases colligative properties. Reason:

Q18. Highest conductivity is shown by:

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

Q20. Strongest intermolecular force is found in:

ExamSpark Quick Chemistry Revision Signals

Quick Links & ExamSpark Resources

Related Study Links