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Free Practice Questions for KSEAB II PUC Chemistry

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Key Facts: KSEAB II PUC Chemistry Exam

~3 h 15 min

Typical duration of the II PUC Chemistry theory paper under KSEAB (subject code 34)

Karnataka II PUC science theory paper scheduling practice / model papers

Code 34

KSEAB II PUC Chemistry subject code used on model and annual papers

Karnataka DPUE/KSEAB Chemistry subject coding

Theory + practical

Official assessment mixes objective/written theory with a practical component; this bank is an English MCQ study adaptation only

KSEAB II PUC Chemistry paper pattern

Fee via college

Examination fees are typically paid through the PU college under KSEAB/DPUE notifications (not a fixed chemistry-only marketplace price)

KSEAB/DPUE fee notification practice

Pass as notified

Pass criteria (including separate theory/practical rules) are as published by KSEAB/DPUE for the sitting

KSEAB/DPUE result and promotion circulars

100 FREE MCQs

Local practice bank size for concept and calculation drill (not the official item count)

OpenExamPrep practice bank

Free 100-question English MCQ study bank for KSEAB II PUC Chemistry (Class 12, code 34). Official exams are ~3 h 15 min theory plus practical; pass as notified with separate theory/practical rules; fee via college as notified by KSEAB/DPUE. Not an official full-format simulation. Sources: kseab.karnataka.gov.in, dpue-exam.karnataka.gov.in, and NCERT Class 12 Chemistry.

Sample KSEAB II PUC Chemistry Practice Questions

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

1Molarity of a solution is defined as the number of moles of solute per:
A.Litre of solution
B.Kilogram of solvent
C.Litre of solvent
D.Kilogram of solution
Explanation: Molarity (M) = moles of solute / volume of solution in litres. Molality uses kilograms of solvent.
2Which concentration unit does not change with temperature for a dilute solution of fixed composition?
A.Molarity
B.Normality
C.Molality
D.Formality expressed per litre of solution
Explanation: Molality is moles of solute per kilogram of solvent. Mass is temperature-independent, so molality does not change with T at fixed composition, unlike volume-based units.
3Raoult's law for a non-volatile solute states that the vapour pressure of the solvent in solution equals:
A.Mole fraction of solvent × vapour pressure of pure solvent
B.Mole fraction of solute × vapour pressure of pure solvent
C.Mole fraction of solvent × vapour pressure of pure solute
D.Total moles × vapour pressure of pure solvent
Explanation: For a non-volatile solute, p_solvent = x_solvent × p°_solvent (Raoult's law).
4Colligative properties of dilute solutions depend primarily on the:
A.Number of solute particles, not their chemical identity
B.Chemical nature of the solute only
C.Colour of the solution
D.Molecular mass of the solvent only
Explanation: Colligative properties (relative vapour-pressure lowering, ΔTb, ΔTf, osmotic pressure) depend on the concentration of solute particles, not on their chemical identity (ideal dilute limit).
5A solution is prepared by dissolving 5.85 g of NaCl (M = 58.5 g mol^-1) in water to make 500 mL of solution. Its molarity is:
A.0.10 M
B.0.20 M
C.0.50 M
D.1.0 M
Explanation: n(NaCl) = 5.85/58.5 = 0.10 mol; V = 0.500 L; M = 0.10/0.500 = 0.20 M.
6The relative lowering of vapour pressure of a dilute solution of a non-volatile solute equals:
A.Mole fraction of the solute
B.Mole fraction of the solvent
C.Molality of the solution
D.Molarity of the solution
Explanation: For ideal dilute solutions, (p° − p)/p° = x_solute.
7The elevation of boiling point of a solution is given by ΔTb = Kb · m · i. Here m stands for:
A.Molality of the solute
B.Molarity of the solute
C.Mass of solvent in grams
D.Mole fraction of solute
Explanation: In the colligative formula ΔTb = i Kb m, m is molality (mol kg^-1 solvent).
8A 0.1 m aqueous solution of a non-electrolyte freezes at −0.186 °C. If Kf(H2O) = 1.86 K kg mol^-1, the van't Hoff factor i is approximately:
A.1.0
B.0.1
C.2.0
D.0.5
Explanation: ΔTf = i Kf m ⇒ 0.186 = i × 1.86 × 0.1 ⇒ i = 0.186/0.186 = 1.0 for a non-electrolyte.
9Osmotic pressure π of a dilute solution is given by π = cRT (van't Hoff), where c is:
A.Molar concentration of solute particles (mol L^-1)
B.Molality only
C.Mole fraction of solvent
D.Density of the solution
Explanation: In the van't Hoff equation π = cRT, c is molar concentration (often written as moles of particles per litre for electrolytes with i).
10Compared with pure water, the vapour pressure of a 1 m aqueous glucose solution is:
A.Lower
B.Higher
C.The same
D.Zero
Explanation: A non-volatile solute lowers the solvent vapour pressure (Raoult's law).

About the KSEAB II PUC Chemistry Exam

KSEAB II PUC Chemistry covers Class 12 Pre-University chemistry under the Karnataka School Examination and Assessment Board, subject code 34. Content prioritises NCERT Class 12 Chemistry as retained in the rationalized Karnataka PUC syllabus: Solutions, Electrochemistry, Chemical Kinetics, the d- and f-Block Elements, Coordination Compounds, Haloalkanes and Haloarenes, Alcohols Phenols and Ethers, Aldehydes Ketones and Carboxylic Acids, Amines, and Biomolecules. Solid-state and surface-chemistry chapters are often rationalized out — confirm the year's DPUE syllabus. Official assessment is written theory (about 3 h 15 min typical) plus practical, not multiple choice alone. This free English MCQ bank builds concept and calculation fluency before students practise official model papers and practical skills using resources from kseab.karnataka.gov.in, dpue-exam.karnataka.gov.in, and NCERT.

Exam sponsor: Karnataka School Examination and Assessment Board (KSEAB) / Department of Pre-University Education (DPUE). The requirements and fees below concern the certification or admission exam, separate from our free practice resources.

Assessment

Official KSEAB II PUC Chemistry assesses Class 12 Pre-University content through a theory paper lasting about 3 hours 15 minutes (subject code 34), typically with objective-type questions plus short and long answer sections, and a practical / internal assessment conducted separately. Confirm the current model paper and notification for section weights and internal choice. This 100-question bank is an English-language MCQ study adaptation of that written syllabus — it does not fully simulate the official multi-section paper or lab practical format.

Time Limit

Typically about 3 hours 15 minutes for the official II PUC Chemistry theory paper (subject code 34), as commonly scheduled for Karnataka Pre-University science theory papers. Practical exams are scheduled separately.

Passing Score

Pass criteria are as notified by KSEAB/DPUE for the year; Chemistry candidates must satisfy separate theory and practical pass rules as notified. Confirm the current circular rather than unofficial fixed percentages.

Exam / Certification Fees

Included in the II PUC examination fee schedule paid through the college (or as notified for private/repeater candidates). Exact rupee amounts vary by year and candidate category; check the latest fee notification on kseab.karnataka.gov.in / dpue-exam.karnataka.gov.in rather than unofficial fixed quotes.

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.

Study emphasis ~12%

Solutions & Colligative Properties

Molarity/molality/mole fraction, Raoult's law, elevation/depression formulas, and osmotic pressure / van't Hoff factor.

Study emphasis ~12%

Electrochemistry

Cell notation, E°cell, Nernst basics, Kohlrausch ideas, and Faraday electrolysis calculations.

Study emphasis ~12%

Chemical Kinetics

Rate expressions, order determination, first-order half-life, and temperature dependence of rate.

Study emphasis ~21%

d/f-Block & Coordination Chemistry

Transition-metal properties, lanthanoid contraction, ligands, IUPAC names, isomerism, and CFT colour/magnetism basics.

Study emphasis ~38%

Organic Chemistry

Halo compounds through amines: mechanisms, named reactions, and distinguishing chemical tests.

Study emphasis ~5%

Biomolecules

Sugars, amino acids/proteins, peptide bonds, and reducing vs non-reducing carbohydrate facts.

Preparing for the KSEAB II PUC Chemistry Exam

What You Need to Know

  • Passing score: Pass criteria are as notified by KSEAB/DPUE for the year; Chemistry candidates must satisfy separate theory and practical pass rules as notified. Confirm the current circular rather than unofficial fixed percentages.
  • Assessment: Official KSEAB II PUC Chemistry assesses Class 12 Pre-University content through a theory paper lasting about 3 hours 15 minutes (subject code 34), typically with objective-type questions plus short and long answer sections, and a practical / internal assessment conducted separately. Confirm the current model paper and notification for section weights and internal choice. This 100-question bank is an English-language MCQ study adaptation of that written syllabus — it does not fully simulate the official multi-section paper or lab practical format.
  • Time limit: Typically about 3 hours 15 minutes for the official II PUC Chemistry theory paper (subject code 34), as commonly scheduled for Karnataka Pre-University science theory papers. Practical exams are scheduled separately.
  • Exam / certification fees: Included in the II PUC examination fee schedule paid through the college (or as notified for private/repeater candidates). Exact rupee amounts vary by year and candidate category; check the latest fee notification on kseab.karnataka.gov.in / dpue-exam.karnataka.gov.in rather than unofficial fixed quotes. Official sources

Using Our Practice Resources

  • Work through all 100 available questions
  • Review every answer and explanation
  • Track weak areas and revisit them
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KSEAB II PUC Chemistry: Suggested Study Strategy

1Drill molarity, molality, colligative ΔT/π, rate/half-life, and electrochemistry EMF/Faraday calculations with units every day — numerical fluency scores heavily on II PUC papers.
2Practise writing full stepwise solutions for colligative problems, first-order kinetics, and electrode half-cell combinations — official papers reward clear working beyond MCQ recognition.
3For organic, master functional-group reactions and distinguishing tests (Lucas, Tollens, Fehling, carbylamine, Hinsberg, azo dye, etc.) rather than only name-reaction lists.
4For coordination chemistry, drill IUPAC names, oxidation numbers, and isomer types with example complexes such as [Co(NH3)6]3+ and [Co(NH3)4Cl2]+.
5After MCQ concept checks, solve KSEAB/DPUE II PUC Chemistry model papers (subject code 34) and complete practical record work on schedule.

Frequently Asked Questions

Is the official KSEAB II PUC Chemistry exam only multiple choice?

No. Official II PUC Chemistry theory papers (subject code 34) mix objective-type items with short and long constructed-response questions over about 3 hours 15 minutes, plus a practical component. This bank is an English-language MCQ study adaptation for concept and calculation practice only — not a complete official-format simulation.

Does II PUC Chemistry include a practical exam?

Yes. Chemistry is a practical-bearing science subject under Karnataka PUC. Candidates must complete prescribed practical work and appear for theory and practical as scheduled by KSEAB/DPUE for the year.

How long is the Chemistry theory paper?

Theory duration is typically about 3 hours 15 minutes for II PUC Chemistry (subject code 34). Practical exams are scheduled separately. Confirm the model paper and notification for your sitting on kseab.karnataka.gov.in or dpue-exam.karnataka.gov.in.

What is the passing score for II PUC Chemistry?

Pass marks are as notified by KSEAB/DPUE for the sitting, with separate theory and practical requirements for practical-bearing subjects. Always confirm the current year circular rather than unofficial fixed percentages.

What does II PUC Chemistry cost to take?

Chemistry is examined as part of the II PUC examination. Fees are typically paid through the college (or as notified for private/repeater candidates) under KSEAB/DPUE fee schedules. Check official portals for the current schedule.

Which topics should I prioritise?

Cover NCERT Class 12 Chemistry as retained in the rationalized Karnataka PUC list: Solutions, Electrochemistry, Chemical Kinetics, d/f-block, Coordination Compounds, and organic chapters from haloalkanes through biomolecules. Drill molarity, kinetics order/half-life, and cell EMF/Faraday calculations. Use official model papers (code 34) alongside this MCQ bank. Do not assume dropped chapters (e.g., solid state/surface chemistry when rationalized out) are still core unless your year's syllabus lists them.