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Periodic Table and Periodic Trends WBJEE MCQ & Practice Questions

Practice Periodic Table and Periodic Trends MCQs for WBJEE Chemistry with answers, explanations, chapter revision and related ChemNexa mock tests.

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Periodic Table and Periodic Trends Revision Guide for WBJEE Chemistry

Periodic Table and Periodic Trends is part of WBJEE Chemistry preparation. A strong revision plan should combine concept review with exam-style questions so that definitions, relationships, calculations and exceptions are recalled accurately.

Use the sample MCQs on this page to check understanding, then attempt the related ChemNexa tests for broader practice. When an answer is wrong, review the explanation and return to the underlying concept before attempting another set.

Important Topics

  • Core definitions and principles
  • Important equations or relationships
  • Common applications and examples
  • Frequently confused concepts
  • Exam-style multiple-choice questions
  • Error review and targeted revision

Revision Tip

Create a one-page summary of trends, structures, reactions, exceptions and key terminology for Periodic Table and Periodic Trends, then test recall with mixed MCQs.

What to practise in Periodic Table and Periodic Trends

Concept Revision

Revise definitions, principles, equations, trends and core ideas from Periodic Table and Periodic Trends before attempting MCQs.

Exam-style MCQs

Use chapter-focused multiple-choice practice to improve accuracy, recall and application for WBJEE Chemistry.

Performance Practice

Attempt ChemNexa tests, review results and return to weak areas for another round of targeted revision.

Top 20 Periodic Table and Periodic Trends MCQs with Answers

These public questions are selected from the exact Periodic Table and Periodic Trends chapter, screened for topic relevance and deduplicated so repeated versions of the same MCQ are not shown publicly. Use them for quick revision, then sign in to attempt the complete test experience with more questions, results and performance review.

WBJEE Chemistry · Periodic Table and Periodic Trends · Very Very Hard

1. Which fundamental condition must be respected in solving Periodic Table and Periodic Trends problems?

  • A. Ignore limiting conditions
  • B. Conservation of atoms and charge
  • C. Ignore units
  • D. Assume coefficients are one
Answer: B
Explanation: Atom and charge conservation are fundamental.

WBJEE Chemistry · Periodic Table and Periodic Trends · Very Very Hard

2. At dynamic equilibrium relevant to Periodic Table and Periodic Trends:

  • A. Forward and reverse rates are equal
  • B. All molecular motion stops
  • C. Concentrations must be equal
  • D. Catalyst is consumed
Answer: A
Explanation: At equilibrium forward and reverse rates are equal.

WBJEE Chemistry · Periodic Table and Periodic Trends · Very Very Hard

3. At constant T and P a spontaneous process has:

  • A. ΔG>0
  • B. ΔG=0 always
  • C. ΔH=0
  • D. ΔG<0
Answer: D
Explanation: Spontaneity requires ΔG<0.

WBJEE Chemistry · Periodic Table and Periodic Trends · Very Very Hard

4. A catalyst in Periodic Table and Periodic Trends generally:

  • A. Changes ΔH
  • B. Changes K at fixed T
  • C. Lowers activation energy without changing K at fixed T
  • D. Changes ΔG°
Answer: C
Explanation: Catalysts affect kinetics, not equilibrium thermodynamics.

WBJEE Chemistry · Periodic Table and Periodic Trends · Very Very Hard

5. Oxidation means:

  • A. Gain of protons
  • B. Loss of electrons
  • C. Gain of electrons
  • D. No oxidation-number change
Answer: B
Explanation: Oxidation is electron loss.

WBJEE Chemistry · Periodic Table and Periodic Trends · Very Very Hard

6. Reduction means:

  • A. Gain of electrons
  • B. Loss of electrons
  • C. Increase in oxidation number
  • D. Loss of protons
Answer: A
Explanation: Reduction is electron gain.

WBJEE Chemistry · Periodic Table and Periodic Trends · Very Very Hard

7. A Lewis acid is:

  • A. Electron-pair donor
  • B. Always proton donor
  • C. Always anion
  • D. Electron-pair acceptor
Answer: D
Explanation: Lewis acids accept electron pairs.

WBJEE Chemistry · Periodic Table and Periodic Trends · Very Very Hard

8. A Lewis base is:

  • A. Always cation
  • B. Always oxidant
  • C. Electron-pair donor
  • D. Electron-pair acceptor
Answer: C
Explanation: Lewis bases donate electron pairs.

WBJEE Chemistry · Periodic Table and Periodic Trends · Very Very Hard

9. Which is a state function?

  • A. Path length
  • B. Enthalpy
  • C. Heat
  • D. Work
Answer: B
Explanation: Enthalpy is a state function.

WBJEE Chemistry · Periodic Table and Periodic Trends · Very Very Hard

10. The correct relation is:

  • A. ΔG°=-RT lnK
  • B. ΔG°=RT lnK
  • C. ΔG°=-KRT
  • D. ΔG°=RT/K
Answer: A
Explanation: ΔG°=-RTlnK.

WBJEE Chemistry · Periodic Table and Periodic Trends · Very Very Hard

11. For a first-order process, half-life is:

  • A. k/0.693
  • B. 1/(k[A]0)
  • C. [A]0/(2k)
  • D. 0.693/k
Answer: D
Explanation: t1/2=0.693/k.

WBJEE Chemistry · Periodic Table and Periodic Trends · Very Very Hard

12. Arrhenius equation is:

  • A. k=EaRT
  • B. k=A/RT
  • C. k=Ae^(-Ea/RT)
  • D. k=Ae^(Ea/RT)
Answer: C
Explanation: Arrhenius equation relates k, Ea and T.

WBJEE Chemistry · Periodic Table and Periodic Trends · Very Very Hard

13. 0.20 mol solute in 0.50 L solution has molarity:

  • A. 0.70 M
  • B. 0.40 M
  • C. 0.10 M
  • D. 2.50 M
Answer: B
Explanation: M=0.20/0.50=0.40 M.

WBJEE Chemistry · Periodic Table and Periodic Trends · Very Very Hard

14. For a weak acid, larger Ka means:

  • A. Stronger acid
  • B. Weaker acid
  • C. No ionisation
  • D. Stronger conjugate acid
Answer: A
Explanation: Larger Ka means greater ionisation.

WBJEE Chemistry · Periodic Table and Periodic Trends · Very Very Hard

15. At 25°C:

  • A. pH+pOH=7
  • B. pH=pOH always
  • C. pH+pOH=1
  • D. pH+pOH=14
Answer: D
Explanation: pH+pOH=pKw=14.

WBJEE Chemistry · Periodic Table and Periodic Trends · Very Very Hard

16. Oxidation in an electrochemical cell occurs at:

  • A. Salt bridge
  • B. Wire
  • C. Anode
  • D. Cathode
Answer: C
Explanation: Oxidation occurs at the anode.

WBJEE Chemistry · Periodic Table and Periodic Trends · Very Very Hard

17. Reduction in an electrochemical cell occurs at:

  • A. Wire
  • B. Cathode
  • C. Anode
  • D. Salt bridge
Answer: B
Explanation: Reduction occurs at the cathode.

WBJEE Chemistry · Periodic Table and Periodic Trends · Very Very Hard

18. Positive E°cell implies:

  • A. ΔG°<0
  • B. ΔG°>0
  • C. K<1 necessarily
  • D. No spontaneous reaction
Answer: A
Explanation: ΔG°=-nFE°.

WBJEE Chemistry · Periodic Table and Periodic Trends · Very Very Hard

19. Higher bond order generally gives:

  • A. Longer weaker bond
  • B. Longer stronger bond
  • C. No effect
  • D. Shorter stronger bond
Answer: D
Explanation: Higher bond order strengthens and shortens bonds.

WBJEE Chemistry · Periodic Table and Periodic Trends · Very Very Hard

20. A nucleophile is:

  • A. Always positive
  • B. Always radical
  • C. Electron-pair donor
  • D. Electron-pair acceptor
Answer: C
Explanation: Nucleophiles donate electron pairs.

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Periodic Table and Periodic Trends Practice Tests

Periodic Table and Periodic Trends Frequently Asked Questions

How should I prepare Periodic Table and Periodic Trends for WBJEE Chemistry?

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