Free Practice Questions for CHSE Odisha Elective Chemistry
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Key Facts: CHSE Odisha Elective Chemistry Exam
70 + 30
Typical theory + practical marks per year for CHSE Chemistry
CHSE Odisha Chemistry / Science Courses of Studies
Year-2 Council
AHSE paper that counts toward the final pass certificate
CHSE Odisha scheme of studies
3 hours
Typical duration of the 70-mark Chemistry theory paper
CHSE Chemistry syllabus (theory timing)
Bureau + NCERT
Prescribed +2 Chemistry Vol-I/II and NCERT Class XI–XII texts
Chemistry-CHSE-2023 prescribed books
In AHSE fee
No separate elective marketplace fee; included in session exam fee
CHSE Odisha AHSE fee structure via colleges
CHSE Odisha Elective Chemistry is a +2 Science elective (typically 70 theory + 30 practical per year). Council Year-2 AHSE counts for the pass certificate. This free 2026 bank is an English MCQ study adaptation covering topics from official units—not a pure official-format simulation.
Sample CHSE Odisha Elective Chemistry Practice Questions
Try these sample questions to review concepts for the CHSE Odisha Elective Chemistry exam. Each question includes a detailed explanation. Start the interactive quiz above for the full 100+ question experience with AI tutoring.
1The number of moles in 36 g of water (H2O; M = 18 g mol^-1) is:
2How many molecules are present in 0.5 mol of CO2? (NA = 6.022 x 10^23 mol^-1)
3A sample contains 40% C, 6.7% H and 53.3% O by mass. Its empirical formula is: (C=12, H=1, O=16)
4In the reaction 2H2 + O2 → 2H2O, if 4 mol H2 and 1 mol O2 react, the limiting reagent is:
5Molarity of a solution prepared by dissolving 5.85 g NaCl (M = 58.5 g mol^-1) in water to make 500 mL solution is:
6According to the law of definite proportions, a pure compound:
7How many grams of CaCO3 (M = 100 g mol^-1) are needed to produce 4.4 g CO2 on complete decomposition? (CaCO3 → CaO + CO2)
8Normality of 0.5 M H2SO4 used as a diprotic acid (for complete H+ neutralization) is:
9The mass of 1.204 x 10^24 molecules of O2 (M = 32 g mol^-1) is: (NA = 6.022 x 10^23)
10If 4.0 g of a gas occupies 2.24 L at STP, its molar mass is approximately:
About the CHSE Odisha Elective Chemistry Exam
Odisha CHSE Higher Secondary Elective Chemistry follows the Science Courses of Studies / Chemistry-CHSE syllabus: Year 1 (Class XI) covers basic concepts and stoichiometry, atomic structure, periodicity, chemical bonding, thermodynamics, equilibrium, redox, organic fundamentals, and hydrocarbons. Year 2 (Class XII) covers solutions, electrochemistry, chemical kinetics, d- and f-block elements, coordination compounds, haloalkanes and haloarenes, alcohols/phenols/ethers, aldehydes/ketones/carboxylic acids, amines, and biomolecules. Practical work (salt analysis, crystallisation, titrations including KMnO4–oxalic acid) carries 30 marks. Prescribed books include Bureau's Higher Secondary (+2) Chemistry Vol-I/II and NCERT Chemistry Parts I–II.
Exam sponsor: Council of Higher Secondary Education, Odisha (CHSE Odisha). The requirements and fees below concern the certification or admission exam, separate from our free practice resources.
Assessment
CHSE Odisha Higher Secondary Elective Chemistry is typically examined as 70 marks theory + 30 marks practical per year (Year-1 college-level Class XI; Year-2 Council AHSE Class XII for the final pass certificate). Theory papers are typically about 3 hours. The 2023–24 CHSE Chemistry syllabus (Chemistry-CHSE-2023) lists Class XI units from basic concepts through hydrocarbons and Class XII units from solutions through biomolecules, with Bureau +2 Chemistry and NCERT as prescribed books. This free bank is an English MCQ study adaptation—not a full long-answer or practical simulation.
Time Limit
3 hours (per 70-mark theory paper); practical ~3 hours separately
Passing Score
~30% minimum in theory (confirm current AHSE circular for theory + practical rules)
Exam / Certification Fees
Included in the CHSE Odisha AHSE examination fee for the session (collected through the affiliated college/H.S. school; no separate public per-elective marketplace fee).
Exam sponsor websiteFees, 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.
Stoichiometry & Concentration
Moles, empirical formula, limiting reagent, molarity, normality, STP molar mass.
Atom, Periodicity & Bonding
Quantum model, trends, VSEPR, hybridization, MOT, hydrogen bonding.
Thermo, Equilibrium & Redox
First law, Hess, ΔG, Kc, pH, buffers, Ksp, oxidation numbers, permanganate.
Organic Basics & Hydrocarbons
Functional groups, effects, intermediates, Markovnikov, aromatic substitution.
Solutions, Electrochemistry & Kinetics
Colligative properties, cells, Nernst, Faraday, order, half-life, Arrhenius.
d/f-Block & Coordination
Transition metals, lanthanides, CN, CFT, magnetic moment, isomerism.
Functional Groups & Biomolecules
SN1, phenol acidity, carbonyl tests, amines, sugars, proteins, DNA.
Practical Lab Skills
Carbonate salt test and KMnO4–oxalic acid titration end point.
Preparing for the CHSE Odisha Elective Chemistry Exam
What You Need to Know
- Passing score: ~30% minimum in theory (confirm current AHSE circular for theory + practical rules)
- Assessment: CHSE Odisha Higher Secondary Elective Chemistry is typically examined as 70 marks theory + 30 marks practical per year (Year-1 college-level Class XI; Year-2 Council AHSE Class XII for the final pass certificate). Theory papers are typically about 3 hours. The 2023–24 CHSE Chemistry syllabus (Chemistry-CHSE-2023) lists Class XI units from basic concepts through hydrocarbons and Class XII units from solutions through biomolecules, with Bureau +2 Chemistry and NCERT as prescribed books. This free bank is an English MCQ study adaptation—not a full long-answer or practical simulation.
- Time limit: 3 hours (per 70-mark theory paper); practical ~3 hours separately
- Exam / certification fees: Included in the CHSE Odisha AHSE examination fee for the session (collected through the affiliated college/H.S. school; no separate public per-elective marketplace fee). 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
CHSE Odisha Elective Chemistry: Suggested Study Strategy
Frequently Asked Questions
How is CHSE Odisha Higher Secondary Elective Chemistry examined?
Chemistry is typically assessed as 70 marks theory plus 30 marks practical per year. Year-1 is college-level Class XI; Year-2 is the Council AHSE Class XII paper that contributes to the final pass certificate. Theory papers are usually about 3 hours and mix objective and analytical/numerical written items—not a pure MCQ board paper.
What does Year 1 (Class XI) Chemistry cover?
Under the CHSE Chemistry XI–XII (2023–24) syllabus: some basic concepts of chemistry (including stoichiometry), structure of atom, classification and periodicity, chemical bonding and molecular structure, chemical thermodynamics, equilibrium, redox reactions, organic chemistry basic principles and techniques, and hydrocarbons. Practical includes salt analysis (acid radicals), crystallisation/titration, viva, and record.
What does Year 2 (Class XII) Chemistry cover?
Solutions, electrochemistry, chemical kinetics, d- and f-block elements, coordination compounds, haloalkanes and haloarenes, alcohols/phenols/ethers, aldehydes/ketones/carboxylic acids, amines, and biomolecules (70 marks theory). Practical includes salt analysis (basic radicals), crystallisation, double/bench/redox titration, organic qualitative tests, viva, and record.
Is this practice bank the same format as the official CHSE paper?
No. Official papers mix objective and constructed-response numerical/mechanism items plus a separate practical exam. This bank is an English-language multiple-choice study adaptation for concept and calculation revision—not an official blueprint replica.
What books are prescribed?
CHSE lists Bureau's Higher Secondary (+2) Chemistry Vol-I/II (Odisha State Bureau of Textbook Preparation and Production) and NCERT Chemistry Parts I–II for Classes XI and XII, plus +2 Practical Chemistry (Bureau) for labs. Confirm the current circular on chseodisha.nic.in.
What is the pass mark and cost?
AHSE practice commonly requires about 30% as a minimum pass floor in theory for science subjects (confirm theory and practical rules in the current notification). Examination charges are included in the CHSE Odisha AHSE fee structure collected through the affiliated college—no separate public per-elective marketplace fee.