100+ Free Assam ASSEB HSLC General Science Practice Questions

Prepare for the Assam State School Education Board (ASSEB) Division-I HSLC General Science (Class X, subject code C3) exam with instant access — no signup required.

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2026 Statistics

Key Facts: Assam ASSEB HSLC General Science Exam

Subject code (General Science)

ASSEB Div-I HSLC curriculum

90+10

Theory + internal marks

ASSEB HSLC assessment pattern

27+3

Typical theory + IA pass

ASSEB Div-I pass norms

~3 h

Theory paper duration

ASSEB HSLC exam pattern summaries

NCERT X

Adopted science textbook base

ASSEB Div-I syllabus references

Assam ASSEB HSLC General Science (C3) is Theory 90 + Internal 10 (pass typically 27 + 3). About 3 hours theory. NCERT Class 10 Science adopted by ASSEB Div-I. This bank provides a free English MCQ study adaptation for 2026 HSLC preparation.

Sample Assam ASSEB HSLC General Science Practice Questions

Try these sample questions to test your Assam ASSEB HSLC General Science exam readiness. Each question includes a detailed explanation. Start the interactive quiz above for the full 100+ question experience with AI tutoring.

1Which of the following is a chemical change?

A.Melting of ice

B.Burning of magnesium ribbon

C.Breaking of glass

D.Dissolving sugar in water

Explanation: Burning magnesium forms magnesium oxide, producing a new substance—so it is a chemical change.

2A balanced chemical equation primarily obeys the:

A.Law of conservation of mass

B.Law of independent assortment

C.Boyle's law only

D.Ohm's law

Explanation: Balancing keeps the same number of each atom on both sides, reflecting conservation of mass.

3The reaction 2H2O → 2H2 + O2 (by electricity) is an example of:

A.Combination

B.Displacement

C.Decomposition

D.Double displacement

Explanation: Electrolysis splits water into hydrogen and oxygen—one reactant forming two products is decomposition.

4In Zn + CuSO4 → ZnSO4 + Cu, the brown deposit on zinc is:

A.Zinc sulphate crystals only

B.Copper metal

C.Sulphur

D.Zinc oxide

Explanation: Zinc is more reactive and displaces copper from CuSO4; copper metal deposits as a brown coating.

5Rancidity in oils and fats is mainly due to:

A.Reduction by hydrogen only

B.Oxidation of fats and oils

C.Neutralization with bases

D.Photosynthesis in oils

Explanation: Rancidity is spoilage of fats/oils largely by oxidation, producing unpleasant smell and taste.

6Which pair correctly matches reaction type and example?

A.Combination — CaCO3 → CaO + CO2

B.Double displacement — Na2SO4 + BaCl2 → BaSO4 + 2NaCl

C.Decomposition — 2H2 + O2 → 2H2O

D.Displacement — 2Mg + O2 → 2MgO

Explanation: Na2SO4 and BaCl2 exchange ions and form insoluble BaSO4—classic double displacement (precipitation).

7When iron nails are placed in copper sulphate solution, the solution turns greenish because of formation of:

A.FeSO4

B.CuO

C.Fe2O3

D.CuS

Explanation: Iron displaces copper: Fe + CuSO4 → FeSO4 + Cu; iron(II) sulphate gives a greenish solution.

8Which substance turns blue litmus red?

A.Sodium hydroxide solution

B.Distilled water

C.Dilute hydrochloric acid

D.Milk of magnesia

Explanation: Acids turn blue litmus red; dilute HCl is acidic.

9The pH of a neutral solution at 25 °C is:

A.0

B.7

C.14

D.1

Explanation: At 25 °C, pure water and neutral solutions have pH 7.

10Tooth enamel is mainly composed of:

A.Calcium carbonate

B.Calcium phosphate (hydroxyapatite)

C.Sodium chloride

D.Magnesium hydroxide

Explanation: Tooth enamel is largely calcium hydroxyapatite (a form of calcium phosphate).

About the Assam ASSEB HSLC General Science Exam

ASSEB HSLC General Science for Class 10 is a core subject (code C3) examined as Theory 90 + Internal Assessment 10. Content follows NCERT Class 10 Science: chemical reactions, acids–bases–salts, metals and non-metals, carbon compounds, periodic classification, life processes, control and coordination, reproduction, heredity, light, the human eye, electricity, magnetic effects, sources of energy, our environment, and sustainable management of natural resources. Please note: Official papers use mixed written formats; the practice questions on this site are an English-language MCQ study adaptation designed to reinforce syllabus concepts—not official ASSEB examination items.

Assessment

One core written theory paper in General Science (subject code C3): Theory 90 marks plus Internal Assessment 10 marks (total 100). Typical theory duration is about 3 hours. Official format is mixed written answers (not pure MCQ). ASSEB adopts NCERT Class 10 Science. This site’s bank is an English-language multiple-choice study adaptation for concept mastery—not past or official ASSEB items.

Time Limit

Approximately 3 hours for the written theory paper (90 marks)

Passing Score

Theory 27/90 and internal assessment 3/10 (subject pass 30/100) under typical ASSEB Div-I HSLC norms; confirm the current year circular on site.sebaonline.org.

Exam Fee

Included in ASSEB HSLC form-fill-up fees (amount notified annually). (Assam State School Education Board (ASSEB), Division-I)

Assam ASSEB HSLC General Science Exam Content Outline

25%

Chemistry Foundations

Types of chemical reactions and balancing equations; pH, indicators, acids, bases, and salts; properties and reactivity of metals and non-metals; carbon compounds including hydrocarbons and functional groups; introductory periodic classification ideas.

25%

Physics Foundations

Reflection and refraction of light, mirrors and lenses; human eye structure, defects of vision, dispersion and scattering; electric current, Ohm’s law, resistance combinations, heating effect; magnetic field due to current, electromagnets, electromagnetic induction basics; conventional and non-conventional energy sources.

20%

Life Processes & Control

Autotrophic and heterotrophic nutrition, human digestive and respiratory systems, transportation in plants and animals, excretion; nervous system, reflex arc, hormones in animals, tropisms and coordination in plants.

15%

Reproduction & Heredity

Asexual reproduction methods, sexual reproduction in flowering plants and humans, reproductive health basics; Mendelian inheritance, traits, sex determination, and variation.

15%

Environment & Natural Resources

Ecosystem components, food chains and webs, biological magnification, waste and ozone issues; forests, water, coal and petroleum management, and the 3Rs (reduce, reuse, recycle).

How to Pass the Assam ASSEB HSLC General Science Exam

What You Need to Know

Passing score: Theory 27/90 and internal assessment 3/10 (subject pass 30/100) under typical ASSEB Div-I HSLC norms; confirm the current year circular on site.sebaonline.org.
Assessment: One core written theory paper in General Science (subject code C3): Theory 90 marks plus Internal Assessment 10 marks (total 100). Typical theory duration is about 3 hours. Official format is mixed written answers (not pure MCQ). ASSEB adopts NCERT Class 10 Science. This site’s bank is an English-language multiple-choice study adaptation for concept mastery—not past or official ASSEB items.
Time limit: Approximately 3 hours for the written theory paper (90 marks)
Exam fee: Included in ASSEB HSLC form-fill-up fees (amount notified annually).

Keys to Passing

Complete 500+ practice questions
Score 80%+ consistently before scheduling
Focus on highest-weighted sections
Use our AI tutor for tough concepts

Assam ASSEB HSLC General Science Study Tips from Top Performers

1Treat Theory (90) and Internal Assessment (10) as one subject total—practice writing full answers for board style, and use MCQs here for rapid concept checks.

2Memorize key chemical equations, pH trends, reactivity series, and carbon functional groups with daily short drills.

3Practice ray diagrams for mirrors/lenses and circuit diagrams for series/parallel resistance before attempting numericals.

4Draw and label life-process pathways (digestion, respiration, circulation, excretion) and the reflex arc from memory.

5Link ecology topics (food chains, biomagnification, 3Rs) to real Assam examples such as river systems, wetlands, and forest conservation.

Frequently Asked Questions

How is ASSEB HSLC General Science structured?

General Science is a core HSLC subject (code C3) under ASSEB Division-I. Assessment is typically Theory 90 marks plus Internal Assessment 10 marks (total 100). The written theory paper is usually about 3 hours and uses mixed written formats rather than pure MCQ.

What is the pass mark for ASSEB HSLC General Science?

Typical ASSEB Div-I norms require 27 marks in theory (out of 90) and 3 marks in internal assessment (out of 10), for a subject total pass of 30 out of 100. Always verify the current year’s circular on https://site.sebaonline.org/.

Which textbook does ASSEB use for HSLC General Science?

ASSEB adopts NCERT Class 10 Science for the HSLC General Science curriculum (as reflected in ASSEB Div-I curriculum and syllabi references such as 2025-26). Confirm any Assam-specific circulars on the board portal.

Are these practice questions official ASSEB exam questions?

No. Official HSLC papers use mixed written formats. These 100 items are an independent English multiple-choice study adaptation covering NCERT Class 10 Science topics to support revision and self-assessment for 2026.

Where can I find official ASSEB notifications and syllabi?

Visit the Assam State School Education Board portal at https://site.sebaonline.org/ for HSLC form-fill-up notices, curriculum documents, and examination circulars.