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100+ Free Bihar BSEB Matric Science Practice Questions

Bihar School Examination Board (BSEB) Matric (Class 10) Science — Physics, Chemistry & Biology practice questions are available now; exam metadata is being verified.

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2026 Statistics

Key Facts: Bihar BSEB Matric Science Exam

~3h 15m

Typical BSEB Matric Science written exam duration

BSEB Matric exam pattern (secondary + board logistics)

~30%

Commonly cited minimum subject pass for BSEB Matric

BSEB pass criteria (widely reported; confirm current circular)

Theory + practical + internal

Science subject structure (commonly ~60 + ~20 + ~20 of 100)

BSEB Matric science-subject pattern reporting

HI / EN

Typical official exam media (Hindi and English)

BSEB Matric language media practice

English MCQ adaptation

This free local bank is not the official Matric paper format

OpenExamPrep practice policy

BSEB Matric Science is a Class 10 Bihar Board subject with Physics, Chemistry, and Biology, commonly described as Theory ~60 + Practical ~20 + Internal ~20 out of 100, ~3h15m written paper mixing objective and descriptive items, and about 30% pass — not a pure MCQ board paper. This free 2026 bank is an English MCQ study adaptation for NCERT/BSEB-aligned Science concepts and calculations.

Sample Bihar BSEB Matric Science Practice Questions

Try these sample questions to test your Bihar BSEB Matric 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 an example of a combination reaction?
A.CaCO3 → CaO + CO2
B.2H2 + O2 → 2H2O
C.Zn + CuSO4 → ZnSO4 + Cu
D.2AgCl → 2Ag + Cl2
Explanation: In a combination reaction two or more reactants form a single product. Hydrogen and oxygen combine to form water.
2A chemical equation is balanced so that it obeys which fundamental law?
A.Law of constant proportions only
B.Law of conservation of mass
C.Charles's law
D.Boyle's law
Explanation: Balancing ensures the same number of each type of atom on both sides, reflecting the law of conservation of mass.
3Which reaction is a double displacement (precipitation) reaction?
A.2Mg + O2 → 2MgO
B.Na2SO4 + BaCl2 → BaSO4 + 2NaCl
C.2H2O → 2H2 + O2
D.CuO + H2 → Cu + H2O
Explanation: Sodium sulfate and barium chloride exchange ions; insoluble BaSO4 precipitates — a classic double displacement.
4Rusting of iron is best classified as:
A.Displacement only
B.Decomposition only
C.Oxidation (corrosion involving oxygen and moisture)
D.Neutralization
Explanation: Rusting is corrosion of iron in the presence of oxygen and moisture; iron is oxidized to hydrated iron(III) oxide.
5In Zn + CuSO4 → ZnSO4 + Cu, zinc acts as a:
A.Reducing agent
B.Oxidizing agent
C.Catalyst
D.Precipitating agent
Explanation: Zinc loses electrons (is oxidized) and reduces Cu2+ to Cu, so zinc is the reducing agent.
6Heating lead(II) nitrate typically produces brown gas. That gas is mainly:
A.CO2
B.NO2
C.SO2
D.NH3
Explanation: Thermal decomposition of lead(II) nitrate yields PbO, nitrogen dioxide (brown NO2), and oxygen.
7The reaction 2AgBr → 2Ag + Br2 in sunlight is an example of:
A.Electrolytic decomposition
B.Photochemical decomposition
C.Thermal combination
D.Neutralization
Explanation: Silver bromide decomposes under light (used in traditional photography), so it is photochemical decomposition.
8Which ion is primarily responsible for the acidic nature of aqueous HCl?
A.Cl−
B.H+ (or H3O+)
C.OH−
D.Na+
Explanation: Acids produce H+ (hydronium) ions in water; these ions give the acidic properties of HCl(aq).
9A solution of pH 2 compared with a solution of pH 5 has [H+] that is:
A.Lower by a factor of 3
B.Higher by a factor of 1000
C.Exactly three times higher
D.The same
Explanation: pH is logarithmic: each unit is a tenfold change in [H+]. From pH 5 to pH 2 is 3 units, so [H+] is 10^3 = 1000 times greater.
10Which indicator is red in acid and blue in base?
A.Phenolphthalein
B.Methyl orange only
C.Litmus
D.Universal indicator only
Explanation: Litmus is red in acid and blue in base — the classic qualitative acid–base indicator at Class 10.

About the Bihar BSEB Matric Science Practice Questions

Verified exam format metadata for Bihar School Examination Board (BSEB) Matric (Class 10) Science — Physics, Chemistry & Biology is pending. The practice questions above remain available while official exam length, timing, passing score, fee, and administrator details are reviewed.