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Key Facts: PSEB SS Chemistry Exam

3 hours

PSEB Senior Secondary Chemistry theory exam duration

PSEB Class 12 Chemistry syllabus 2025–26

70 + 25 + 05

Theory + Practical + INA marks for Class 12 Chemistry (total 100)

PSEB Class 12 Chemistry syllabus

33% each + aggregate

Pass floor in theory, practical, and INA separately plus aggregate

PSEB Scheme of Studies Class XII

Code 053

Chemistry subject code on PSEB Senior Secondary scheme

PSEB Class 12 scheme / syllabus

English MCQ adaptation

This free local bank is not the official Senior Secondary paper format

OpenExamPrep practice policy

PSEB Senior Secondary Chemistry (code 053) is a Class 12 public-exam subject with Theory 70 + Practical 25 + INA 05 (3 hours theory) and 33% component + aggregate pass — not a pure MCQ board paper. This free 2026 bank is an English MCQ study adaptation for NCERT/PSEB-focused Class 12 Chemistry concepts and calculations.

Sample PSEB SS Chemistry Practice Questions

Try these sample questions to review concepts for the PSEB SS Chemistry exam. Each question includes a detailed explanation. Start the interactive quiz above for the full 100+ question experience with AI tutoring.

1Molarity (M) of a solution is defined as the number of moles of solute present in:
A.One litre of solution
B.One kilogram of solvent
C.One litre of solvent
D.One kilogram of solution
Explanation: Molarity M = moles of solute / volume of solution in litres. Molality uses mass of solvent in kilograms.
2Which concentration unit is independent of temperature?
A.Molarity
B.Normality
C.Molality
D.Volume percentage
Explanation: Molality depends only on moles of solute and mass of solvent. Mass does not change with temperature, so molality is temperature-independent. Molarity and volume-based units change as volume expands or contracts with temperature.
311.7 g of NaCl (M = 58.5 g mol⁻¹) is dissolved in water to make 250 mL of solution. The molarity is:
A.0.8 M
B.0.4 M
C.1.0 M
D.2.0 M
Explanation: Moles of NaCl = 11.7/58.5 = 0.20 mol. Volume = 0.250 L. M = 0.20/0.250 = 0.80 M.
436 g of glucose (M = 180 g mol⁻¹) is dissolved in 500 g of water. The molality of the solution is:
A.0.4 m
B.0.2 m
C.0.5 m
D.0.8 m
Explanation: Moles of glucose = 36/180 = 0.20 mol. Mass of solvent = 0.500 kg. Molality m = 0.20/0.500 = 0.40 m.
5According to Raoult’s law for a volatile solvent A, its partial vapour pressure in an ideal solution is:
A.P°_A × mole fraction of A in the solution
B.Equal to the pure solvent vapour pressure P°_A regardless of composition
C.P°_A × mole fraction of solute only
D.Independent of temperature
Explanation: Raoult’s law: p_A = P°_A · x_A, where x_A is the mole fraction of solvent A in the liquid phase for an ideal solution.
6Colligative properties of dilute solutions depend primarily on the:
A.Number of solute particles relative to solvent particles
B.Chemical identity of the solute only
C.Colour of the solution
D.Density of pure solvent alone
Explanation: Colligative properties (relative vapour pressure lowering, ΔT_b, ΔT_f, osmotic pressure) depend on the relative number of solute particles, not on their chemical identity (for ideal dilute non-associating/non-dissociating cases, adjusted by i when needed).
7A 0.20 m aqueous solution of a non-volatile non-electrolyte has K_b = 0.52 K kg mol⁻¹. The elevation in boiling point is:
A.0.052 K
B.0.520 K
C.0.104 K
D.1.04 K
Explanation: ΔT_b = K_b · m · i. For non-electrolyte i = 1, so ΔT_b = 0.52 × 0.20 = 0.104 K.
8For a 0.10 m NaCl solution assuming complete dissociation (i = 2) and K_f = 1.86 K kg mol⁻¹, the depression in freezing point is:
A.0.093 K
B.0.186 K
C.0.372 K
D.1.86 K
Explanation: ΔT_f = K_f · m · i = 1.86 × 0.10 × 2 = 0.372 K.
9The osmotic pressure (π) of an ideal dilute solution is given by:
A.π = nRT (for pure solvent)
B.π = mRT only for solids
C.π = CRT (C = molar concentration of solute)
D.π = ΔT_b / K_b
Explanation: van’t Hoff equation: π = CRT, where C is molar concentration of solute particles (with i if needed), R gas constant, T absolute temperature.
10At 300 K, the osmotic pressure of a solution containing 2.0 g of a non-electrolyte solute (M = 60 g mol⁻¹) in 500 mL solution is approximately (R = 0.0821 L atm mol⁻¹ K⁻¹):
A.0.82 atm
B.2.46 atm
C.1.64 atm
D.3.28 atm
Explanation: n = 2.0/60 = 1/30 mol. V = 0.500 L. C = n/V = (1/30)/0.5 = 1/15 M. π = CRT = (1/15)×0.0821×300 ≈ 1.642 atm ≈ 1.64 atm.

About the PSEB SS Chemistry Exam

Punjab Senior Secondary Chemistry under PSEB covers Class 12 Chemistry aligned to the Board’s Senior Secondary syllabus and NCERT-style Class 12 Chemistry. Core units include solutions and colligative properties, electrochemistry, chemical kinetics, d- and f-block elements, coordination compounds, haloalkanes/haloarenes, alcohols/phenols/ethers, aldehydes/ketones/carboxylic acids, amines (with diazonium salts), and biomolecules. Official assessment is Theory 70 + Practical 25 + INA 05 with 3 hours of theory (subject code 053). Pass typically requires 33% in each component and 33% aggregate. This free local bank provides English four-option MCQs for revision and calculation practice; pair it with official syllabus PDFs and written numerical/mechanism practice via pseb.ac.in.

Exam sponsor: Punjab School Education Board (PSEB). The requirements and fees below concern the certification or admission exam, separate from our free practice resources.

Assessment

PSEB Senior Secondary Chemistry is a Class 12 subject under the Senior Secondary Certificate Examination (subject code 053). Official logistics describe 3 hours of theory work for 70 theory marks, plus Practical 25 marks and INA 05 marks (total 100). Syllabus for regular students is CBSE/NCERT Class 12 Chemistry-aligned: Solutions; Electrochemistry; Chemical Kinetics; d- and f-Block Elements; Coordination Compounds; Haloalkanes and Haloarenes; Alcohols, Phenols and Ethers; Aldehydes, Ketones and Carboxylic Acids; Amines (including diazonium salts); Biomolecules. English/Punjabi/Hindi medium materials may be used in schools; this practice bank is an English-language MCQ study adaptation. Confirm the current syllabus PDF and circulars on pseb.ac.in.

Time Limit

3 hours

Passing Score

33% in theory, practical, and INA separately + 33% aggregate

Exam / Certification Fees

As notified by PSEB and paid through affiliated schools for regular and compartment/improvement sittings (no single fixed public subject fee for all categories).

Exam sponsor website

Fees, eligibility, and exam policies can change. Confirm them with the exam sponsor before applying or paying.

Our practice resources: topics covered

We aim to reflect publicly available exam outlines and topic information in our study resources. Coverage, format, and difficulty may differ from the actual exam, and we cannot guarantee that every detail is accurate or current. Confirm exam requirements, fees, and policies with the official exam sponsor.

~12% of this local bank

Solutions

Concentration units, Raoult’s law, colligative properties, and van’t Hoff factor.

~12% of this local bank

Electrochemistry

Cells, Nernst equation, conductivity, Kohlrausch’s law, and Faraday’s laws.

~10% of this local bank

Chemical Kinetics

Rate laws, order, half-life (zero/first order), and Arrhenius equation.

~10% of this local bank

d- and f-Block Elements

Transition and inner-transition properties and lanthanoid contraction.

~10% of this local bank

Coordination Compounds

Nomenclature, isomerism, ligands, and bonding theories at Class 12 depth.

~9% of this local bank

Haloalkanes and Haloarenes

SN1/SN2, optical activity, preparation, and reactivity trends.

~9% of this local bank

Alcohols, Phenols and Ethers

Preparation, acidity of phenols, identification, and key reactions.

~11% of this local bank

Aldehydes, Ketones and Carboxylic Acids

Carbonyl reactions, tests, and carboxylic acid chemistry.

~8% of this local bank

Amines

Basicity, preparation methods, distinguishing tests, and diazonium salts.

~9% of this local bank

Biomolecules

Carbohydrates, proteins, vitamins, hormones, and nucleic acids.

Preparing for the PSEB SS Chemistry Exam

What You Need to Know

  • Passing score: 33% in theory, practical, and INA separately + 33% aggregate
  • Assessment: PSEB Senior Secondary Chemistry is a Class 12 subject under the Senior Secondary Certificate Examination (subject code 053). Official logistics describe 3 hours of theory work for 70 theory marks, plus Practical 25 marks and INA 05 marks (total 100). Syllabus for regular students is CBSE/NCERT Class 12 Chemistry-aligned: Solutions; Electrochemistry; Chemical Kinetics; d- and f-Block Elements; Coordination Compounds; Haloalkanes and Haloarenes; Alcohols, Phenols and Ethers; Aldehydes, Ketones and Carboxylic Acids; Amines (including diazonium salts); Biomolecules. English/Punjabi/Hindi medium materials may be used in schools; this practice bank is an English-language MCQ study adaptation. Confirm the current syllabus PDF and circulars on pseb.ac.in.
  • Time limit: 3 hours
  • Exam / certification fees: As notified by PSEB and paid through affiliated schools for regular and compartment/improvement sittings (no single fixed public subject fee for all categories). Official sources

Using Our Practice Resources

  • Work through all 100 available questions
  • Review every answer and explanation
  • Track weak areas and revisit them
  • Use our AI tutor for tough concepts

PSEB SS Chemistry: Suggested Study Strategy

1For solutions and kinetics, always write the formula first, then substitute SI units carefully (m vs M; ln 2 ≈ 0.693 for half-life).
2In electrochemistry, track anode/cathode oxidation-reduction and sign conventions before applying the Nernst equation.
3For organic, map functional-group tests (Tollens, Fehling, iodoform, azo dye, carbylamine) to structures — a frequent objective trap.
4Coordination naming: list ligands alphabetically, use oxidation number of the metal, and watch for linkage/coordination isomerism keywords.
5Use current PSEB Class 12 Chemistry syllabus and Scheme of Studies from pseb.ac.in to balance objective drills with written numerical, mechanism, and practical (volumetric + salt analysis) practice.

Frequently Asked Questions

How is PSEB Senior Secondary Chemistry officially examined?

Chemistry is examined under the Punjab Senior Secondary Certificate Examination as a Class 12 subject with Theory (70 marks), Practical (25 marks), and INA (5 marks), total 100. Theory duration is 3 hours; subject code is 053. Confirm the year’s syllabus PDF, date sheet, and circulars on pseb.ac.in.

Is this practice bank the same format as the official Senior Secondary Chemistry paper?

No. Official PSEB Class 12 Chemistry theory papers mix objective and subjective numerical/theory sections, plus a separate practical and school INA. This bank is an English-language multiple-choice study adaptation for concepts and numericals only — not an official translation, blueprint replica, or full written-paper/practical simulation.

What syllabus does this bank follow?

It is aligned to the PSEB Class 12 Chemistry syllabus for regular students (2025–26 style): Solutions; Electrochemistry; Chemical Kinetics; d- and f-Block Elements; Coordination Compounds; Haloalkanes and Haloarenes; Alcohols, Phenols and Ethers; Aldehydes, Ketones and Carboxylic Acids; Amines (with diazonium); Biomolecules — matching NCERT Class 12 Chemistry units used by PSEB.

What is the pass mark for PSEB Senior Secondary Chemistry?

Per the PSEB Scheme of Studies for Class XII, candidates typically must secure 33% separately in theory, practical, and INA components and 33% in aggregate (Theory 70 + Practical 25 + INA 05 = 100). Always verify the current PSEB result circular for your sitting.

Where should I check official syllabus and date sheets?

Use the Punjab School Education Board website at pseb.ac.in for Class 12 Chemistry syllabus PDFs (code 053), Scheme of Studies, date sheets, and exam circulars.