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p-Block Group 15 & 16 NEET MCQs with Solutions

Practice NEET-relevant MCQs for p‑Block Groups 15 and 16 with detailed solutions, concept summaries and links to ChemNexa timed mock tests for effective revision.

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p-Block Group 15 and 16 Revision Guide for NEET Chemistry

p-Block Elements covers periodic trends, structures, oxidation states and important compounds of groups 13 to 18 depending on the syllabus. Questions often test trends together with exceptions.

For NEET Chemistry, organise revision group-wise and compare oxidation states, acidic or basic character, anomalous behaviour, structures and important reactions.

Important Topics

  • Group-wise periodic trends
  • Anomalous behaviour of first elements
  • Oxidation states and inert-pair effect
  • Structures of important compounds
  • Acidic and basic character
  • Important reactions and uses

Revision Tip

Create a one-page summary of trends, structures, reactions, exceptions and key terminology for p-Block Group 15 and 16, then test recall with mixed MCQs.

What to practise in p-Block Group 15 and 16

Concept Revision

Revise definitions, principles, equations, trends and core ideas from p-Block Group 15 and 16 before attempting MCQs.

Exam-style MCQs

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

Performance Practice

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

Top 20 p-Block Group 15 and 16 MCQs with Answers

These public questions are selected from the exact p-Block Group 15 and 16 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.

NEET Chemistry · p-Block Group 15 and 16 · Very Very Hard

1. Which principle is essential when solving a quantitative problem in p-Block Group 15 and 16?

  • A. Ignoring limiting conditions
  • B. Conservation of mass and charge where applicable
  • C. Ignoring units
  • D. Assuming all coefficients are unity
Answer: B
Explanation: Mass and charge conservation are fundamental.

NEET Chemistry · p-Block Group 15 and 16 · Very Very Hard

2. At equilibrium in a reversible system related to p-Block Group 15 and 16, which statement is correct?

  • A. Forward and reverse rates are equal
  • B. All molecular motion stops
  • C. Reactant and product concentrations must be equal
  • D. The catalyst is consumed
Answer: A
Explanation: Dynamic equilibrium has equal forward and reverse rates.

NEET Chemistry · p-Block Group 15 and 16 · Very Very Hard

3. For a spontaneous process at constant T and P in a p-Block Group 15 and 16 context, ΔG is:

  • A. Positive
  • B. Always zero
  • C. Always equal to ΔH
  • D. Negative
Answer: D
Explanation: Spontaneity at constant T,P requires ΔG<0.

NEET Chemistry · p-Block Group 15 and 16 · Very Very Hard

4. Which statement about a catalyst in p-Block Group 15 and 16 is correct?

  • A. It changes reaction enthalpy
  • B. It is always consumed
  • C. It lowers the activation barrier without changing K at fixed T
  • D. It changes ΔG°
Answer: C
Explanation: Catalysts affect kinetics, not equilibrium thermodynamics.

NEET Chemistry · p-Block Group 15 and 16 · Very Very Hard

5. Oxidation in a redox step relevant to p-Block Group 15 and 16 means:

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

NEET Chemistry · p-Block Group 15 and 16 · Very Very Hard

6. Reduction in a redox step relevant to p-Block Group 15 and 16 means:

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

NEET Chemistry · p-Block Group 15 and 16 · Very Very Hard

7. A Lewis acid encountered in p-Block Group 15 and 16 is an:

  • A. Electron-pair donor
  • B. Proton acceptor only
  • C. Anion only
  • D. Electron-pair acceptor
Answer: D
Explanation: Lewis acids accept electron pairs.

NEET Chemistry · p-Block Group 15 and 16 · Very Very Hard

8. A Lewis base encountered in p-Block Group 15 and 16 is an:

  • A. Cation only
  • B. Oxidising agent only
  • C. Electron-pair donor
  • D. Electron-pair acceptor
Answer: C
Explanation: Lewis bases donate electron pairs.

NEET Chemistry · p-Block Group 15 and 16 · Very Very Hard

9. Which is a state function useful in p-Block Group 15 and 16?

  • A. Path length
  • B. Enthalpy
  • C. Heat
  • D. Work
Answer: B
Explanation: Enthalpy is path independent.

NEET Chemistry · p-Block Group 15 and 16 · Very Very Hard

10. The relation between standard Gibbs energy and equilibrium constant is:

  • A. ΔG°=-RT lnK
  • B. ΔG°=RT lnK
  • C. ΔG°=-KRT
  • D. ΔG°=RT/K
Answer: A
Explanation: The standard thermodynamic relation is ΔG°=-RT lnK.

NEET Chemistry · p-Block Group 15 and 16 · Very Very Hard

11. For a first-order kinetic process in p-Block Group 15 and 16, half-life equals:

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

NEET Chemistry · p-Block Group 15 and 16 · Very Very Hard

12. For an ideal dilute solution relevant to p-Block Group 15 and 16, molarity is:

  • A. Moles solvent per litre
  • B. Moles solute per litre solution
  • C. Moles solute per kg solvent
  • D. Grams solute per mole solvent
Answer: B
Explanation: M=n/V(L).

NEET Chemistry · p-Block Group 15 and 16 · Very Very Hard

13. For a weak acid, a larger Ka generally indicates:

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

NEET Chemistry · p-Block Group 15 and 16 · Very Very Hard

14. At 25°C, pH+pOH for aqueous solution is:

  • A. 7
  • B. 1
  • C. 0
  • D. 14
Answer: D
Explanation: pH+pOH=pKw=14 at 25°C.

NEET Chemistry · p-Block Group 15 and 16 · Very Very Hard

15. For an electrochemical cell, oxidation occurs at:

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

NEET Chemistry · p-Block Group 15 and 16 · Very Very Hard

16. For an electrochemical cell, reduction occurs at:

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

NEET Chemistry · p-Block Group 15 and 16 · Very Very Hard

17. A positive E°cell implies:

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

NEET Chemistry · p-Block Group 15 and 16 · Very Very Hard

18. Higher bond order generally corresponds to:

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

NEET Chemistry · p-Block Group 15 and 16 · Very Very Hard

19. A nucleophile in an organic reaction related to p-Block Group 15 and 16 is:

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

NEET Chemistry · p-Block Group 15 and 16 · Very Very Hard

20. An electrophile in an organic reaction related to p-Block Group 15 and 16 is:

  • A. Always a radical
  • B. Electron-pair acceptor
  • C. Electron-pair donor
  • D. Always negatively charged
Answer: B
Explanation: Electrophiles accept electron pairs.

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p-Block Group 15 and 16 Practice Tests

p-Block Group 15 and 16 Frequently Asked Questions

How should I memorise p-Block Chemistry?

Use comparison tables by group and focus on trends, important exceptions, structures and reactions instead of memorising disconnected facts.

Why are exceptions important in p-Block questions?

Small size, high electronegativity, absence of d orbitals in second-period elements and inert-pair effects create frequently tested deviations from simple trends.

What is a good revision method for p-Block?

Revise one group at a time, write the common oxidation states and key compounds, then immediately solve targeted MCQs.

Continue with another chapter to build connected concepts and strengthen your overall Chemistry preparation.

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