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Free Practice Questions for Kerala Plus Two Chemistry

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Key Facts: Kerala Plus Two Chemistry Exam

~2 h + cool-off

Typical duration of the Plus Two Chemistry theory paper under DHSE Kerala, plus cool-off as notified

Kerala DHSE Higher Secondary examination timetable practice

TE + CE + Practical

Official subject total is 100 marks combining theory, continuous evaluation, and practical; this bank is an English MCQ study adaptation only

Kerala DHSE Higher Secondary Chemistry assessment pattern

D+ / ~30%

Typical minimum grade band ~30% aggregate with about ~30% TE as notified for promotion — confirm the year's grading circular

DHSE Higher Secondary grading notifications

Fee via school

Examination fees are typically paid through the school under DHSE notifications (not a fixed chemistry-only marketplace price)

DHSE fee notification practice

DHSE Kerala

Administrator is the Directorate of Higher Secondary Education (DHSE), Kerala, with SCERT syllabus support

dhsekerala.gov.in / SCERT Kerala

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 Kerala DHSE Plus Two Chemistry (Class 12). Official exams use TE + CE + Practical (100 marks total), ~2 h theory + cool-off; pass typically D+/~30% aggregate with ~30% TE as notified; fee via schools as notified by DHSE. Not an official full-format simulation. Sources: dhsekerala.gov.in, beta.hseportal.kerala.gov.in, SCERT Kerala, and NCERT Class 12 Chemistry.

Sample Kerala Plus Two Chemistry Practice Questions

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

1Molality of a solution is defined as the number of moles of solute per:
A.Kilogram of solution
B.Litre of solution
C.Litre of solvent
D.Kilogram of solvent
Explanation: Molality (m) = moles of solute / mass of solvent in kg. Molarity uses litres of solution.
2Which concentration unit is independent of temperature?
A.Volume percent
B.Normality
C.Molality
D.Molarity
Explanation: Molality is based on mass of solvent, which does not change with temperature. Volume-based units vary as density changes with T.
3For an ideal binary solution of A and B, Raoult's law for the partial vapour pressure of A is:
A.p_A = x_B p_A°
B.p_A = (1 − x_A) p_A°
C.p_A = x_A p_B°
D.p_A = x_A p_A°
Explanation: Raoult's law: partial pressure of a component equals its mole fraction times its pure-component vapour pressure.
4A non-volatile solute is dissolved in a solvent. The vapour pressure of the solution compared with pure solvent is:
A.Higher
B.Unchanged
C.Lower
D.Zero always
Explanation: Non-volatile solute lowers the mole fraction of solvent at the surface, so solvent vapour pressure decreases (Raoult's law).
5Relative lowering of vapour pressure for a dilute solution of a non-volatile non-electrolyte equals:
A.Mole fraction of solvent
B.Molality of solute
C.Molarity of solute
D.Mole fraction of solute
Explanation: For non-volatile non-electrolyte: (p° − p)/p° = x_solute.
6Elevation of boiling point of a solvent by a non-volatile solute is proportional to:
A.Molarity of the solution only
B.Atmospheric pressure only
C.Density of pure solvent only
D.Molality of the solution
Explanation: ΔT_b = K_b m, where m is molality of solute particles (van't Hoff factor included for electrolytes).
7A solution contains 0.2 mol of a non-volatile non-electrolyte in 0.8 mol of solvent. The relative lowering of vapour pressure is:
A.0.25
B.0.80
C.0.20
D.1.0
Explanation: x_solute = 0.2/(0.2+0.8) = 0.2; relative lowering = x_solute = 0.20.
8Osmotic pressure of a dilute solution of a non-electrolyte is given by π =:
A.nRT only
B.RT/C
C.CRT
D.MRT/2
Explanation: van't Hoff equation: π = CRT, where C is molar concentration of solute.
9Which solution shows positive deviation from Raoult's law?
A.Acetone + carbon disulphide
B.Benzene + toluene (nearly ideal)
C.Chloroform + acetone (strong association)
D.n-Hexane + n-heptane (nearly ideal)
Explanation: Acetone–CS2 interactions are weaker than pure-component interactions, giving higher total vapour pressure (positive deviation).
10For a dilute aqueous solution of a strong electrolyte that fully dissociates into two ions (e.g., NaCl), the van't Hoff factor i approaches:
A.0
B.3
C.2
D.1
Explanation: NaCl → Na+ + Cl− gives two particles per formula unit, so i ≈ 2 (ignoring ion pairing).

About the Kerala Plus Two Chemistry Exam

Kerala Plus Two Chemistry covers Class 12 Higher Secondary chemistry under the Directorate of Higher Secondary Education (DHSE), Government of Kerala. Content prioritises NCERT Class 12 Chemistry as retained in the SCERT Kerala / DHSE scheme: 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, Biomolecules, and Polymers / Chemistry in Everyday Life as notified for the year, with Class 11 foundations for stoichiometry and related problem solving. Official assessment is mixed TE + CE + Practical (100 marks total) with theory typically about 2 hours plus cool-off — 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 dhsekerala.gov.in, beta.hseportal.kerala.gov.in, SCERT Kerala, and NCERT.

Exam sponsor: Directorate of Higher Secondary Education (DHSE), Kerala. The requirements and fees below concern the certification or admission exam, separate from our free practice resources.

Assessment

Official Kerala DHSE Higher Secondary Plus Two Chemistry assesses Class 12 content through a theory paper lasting about 2 hours plus cool-off (as notified), typically with objective-type questions plus short and long answer sections, Continuous Evaluation (CE) through the school, and a practical examination. The combined subject total is 100 marks (TE + CE + Practical). Confirm the current scheme 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-component TE/CE/practical format.

Time Limit

Typically about 2 hours for the official Plus Two Chemistry theory paper plus a cool-off period as notified on the DHSE/HSE timetable. Practical exams and CE are scheduled separately through the school.

Passing Score

Pass/promotion criteria follow DHSE grading notifications; candidates typically need about a D+ band (~30% aggregate of TE+CE+Practical as applicable) and about ~30% in theory (TE). Confirm the current circular rather than unofficial fixed percentages.

Exam / Certification Fees

Included in the Higher Secondary examination fee schedule paid through the school (or as notified for private/SAY candidates). Exact rupee amounts vary by year and candidate category; check the latest fee notification on dhsekerala.gov.in / beta.hseportal.kerala.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 ~11%

Solutions & Colligative Properties

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

Study emphasis ~11%

Electrochemistry

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

Study emphasis ~11%

Chemical Kinetics

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

Study emphasis ~18%

d/f-Block & Coordination Chemistry

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

Study emphasis ~32%

Organic Chemistry

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

Study emphasis ~10%

Biomolecules, Polymers & Everyday Chemistry

Sugars, amino acids/proteins, common polymers, detergents/drugs basics retained in the Kerala scheme.

Study emphasis ~7%

Stoichiometry & Class 11 Foundations

Mole concept, limiting reagent, and foundational physical chemistry used in Plus Two numericals.

Preparing for the Kerala Plus Two Chemistry Exam

What You Need to Know

  • Passing score: Pass/promotion criteria follow DHSE grading notifications; candidates typically need about a D+ band (~30% aggregate of TE+CE+Practical as applicable) and about ~30% in theory (TE). Confirm the current circular rather than unofficial fixed percentages.
  • Assessment: Official Kerala DHSE Higher Secondary Plus Two Chemistry assesses Class 12 content through a theory paper lasting about 2 hours plus cool-off (as notified), typically with objective-type questions plus short and long answer sections, Continuous Evaluation (CE) through the school, and a practical examination. The combined subject total is 100 marks (TE + CE + Practical). Confirm the current scheme 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-component TE/CE/practical format.
  • Time limit: Typically about 2 hours for the official Plus Two Chemistry theory paper plus a cool-off period as notified on the DHSE/HSE timetable. Practical exams and CE are scheduled separately through the school.
  • Exam / certification fees: Included in the Higher Secondary examination fee schedule paid through the school (or as notified for private/SAY candidates). Exact rupee amounts vary by year and candidate category; check the latest fee notification on dhsekerala.gov.in / beta.hseportal.kerala.gov.in rather than unofficial fixed quotes. Official sources

Using Our Practice Resources

  • Work through all 100 available questions
  • Review every answer and explanation
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Kerala Plus Two 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 Plus Two papers.
2Practise writing full stepwise solutions for colligative problems, first-order kinetics, and electrode half-cell combinations — official TE 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 DHSE/SCERT Plus Two Chemistry model papers and complete practical record and CE work on schedule.

Frequently Asked Questions

Is the official Kerala Plus Two Chemistry exam only multiple choice?

No. Official Higher Secondary Chemistry uses Theory Examination (TE), Continuous Evaluation (CE), and Practical for a subject total of 100 marks. Theory papers mix objective-type items with short and long constructed-response questions over about 2 hours plus cool-off. This bank is an English-language MCQ study adaptation for concept and calculation practice only — not a complete official-format simulation.

Does Plus Two Chemistry include a practical exam?

Yes. Chemistry is a practical-bearing science subject under Kerala Higher Secondary. Candidates must complete prescribed practical work and CE evidence and appear for theory and practical as scheduled by DHSE/schools for the year.

How long is the Chemistry theory paper?

Theory duration is typically about 2 hours plus a cool-off period as notified on the DHSE/HSE timetable. Practical exams are scheduled separately. Confirm the scheme and notification for your sitting on dhsekerala.gov.in or beta.hseportal.kerala.gov.in.

What is the passing score for Plus Two Chemistry?

Pass/promotion rules follow DHSE grading notifications. Candidates typically need about a D+ band (~30% aggregate of TE+CE+Practical as applicable) and about ~30% in theory (TE). Always confirm the current year circular rather than unofficial fixed percentages.

What does Plus Two Chemistry cost to take?

Chemistry is examined as part of the Higher Secondary examination. Fees are typically paid through the school (or as notified for private/SAY candidates) under DHSE fee schedules. Check official portals for the current schedule.

Which topics should I prioritise?

Cover NCERT Class 12 Chemistry as retained in the SCERT Kerala / DHSE scheme: Solutions, Electrochemistry, Chemical Kinetics, d/f-block, Coordination Compounds, organic chapters from haloalkanes through amines, biomolecules, and polymers/chemistry in everyday life where listed. Drill molarity, kinetics order/half-life, and cell EMF/Faraday calculations, and keep Class 11 stoichiometry sharp. Use official scheme/model papers alongside this MCQ bank. Confirm the year's syllabus for any rationalized chapters.