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100+ Free BSEB Intermediate Chemistry Practice Questions

Bihar School Examination Board Intermediate Chemistry (Class 12 / I.Sc., Subject Code 118) practice questions are available now; exam metadata is being verified.

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2026 Statistics

Key Facts: BSEB Intermediate Chemistry Exam

3 h 15 min

Typical duration of the Intermediate Chemistry theory paper under BSEB (subject code 118)

BSEB Intermediate model/annual papers for Chemistry 118

~70 + ~30

Typical theory marks plus practical/internal assessment marks for Intermediate Chemistry

BSEB Intermediate Chemistry examination pattern summaries and model papers

~30%

Usual Intermediate pass benchmark range with separate theory/practical rules (confirm circular)

BSEB Intermediate examination pass-mark practice

Code 118

BSEB Intermediate Chemistry subject code used on model and annual papers

BSEB Intermediate Chemistry model papers

Written + practical

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

BSEB Intermediate Chemistry paper pattern

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 BSEB Intermediate Chemistry (Class 12, code 118). Official exams are ~3 h 15 min theory (~70) plus practical (~30); pass roughly ~30% with separate theory/practical rules; fee part of Intermediate fees notified by BSEB. Not an official full-format simulation. Sources: biharboardonline.com model papers and NCERT Class 12 Chemistry.

Sample BSEB Intermediate Chemistry Practice Questions

Try these sample questions to test your BSEB Intermediate Chemistry exam readiness. 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 is temperature-independent?
A.Molarity
B.Molality
C.Normality of a dilute aqueous solution only
D.Volume percent of a gas mixture at fixed T,P only
Explanation: Molality uses mass of solvent, which does not change with temperature. Molarity uses volume, which can expand/contract with T.
3Raoult's law for a volatile solvent states that the partial vapour pressure of the solvent is proportional to its:
A.Molality only
B.Molarity only
C.Mole fraction in the solution
D.Density only
Explanation: Raoult's law: p_A = p_A° · x_A, where x_A is the mole fraction of solvent A in the solution.
4Colligative properties depend primarily on the:
A.Colour of the solute
B.Magnetic moment of the solute
C.Nuclear spin of the solute
D.Number of solute particles, not their identity
Explanation: Colligative properties (ΔTb, ΔTf, π, relative lowering of vapour pressure) depend on the number of dissolved particles per solvent amount, not chemical identity (ideal dilute case).
5In a galvanic cell, oxidation occurs at the:
A.Anode
B.Cathode
C.Salt bridge only
D.Voltmeter only
Explanation: By definition, oxidation occurs at the anode and reduction at the cathode in both galvanic and electrolytic cells (signs of electrodes differ by cell type).
6The SI unit of cell potential (EMF) is the:
A.Ampere (A)
B.Volt (V)
C.Ohm (Ω)
D.Coulomb (C)
Explanation: Electromotive force / cell potential is measured in volts (J C^-1).
7Faraday's first law of electrolysis states that the mass of substance deposited is proportional to the:
A.Square of the current only
B.Resistance of the electrolyte only
C.Quantity of electricity passed
D.Colour of the electrode
Explanation: m ∝ Q, where Q = It is the charge passed. Equivalently m = (E/F)·Q using electrochemical equivalent.
8The rate of a chemical reaction is generally expressed as the change in concentration of a reactant or product per unit:
A.Pressure only
B.Volume only
C.Mass of catalyst only
D.Time
Explanation: Rate = Δconcentration / Δtime (with stoichiometric factors as needed). Units are often mol L^-1 s^-1.
9For a first-order reaction, the half-life (t1/2) is:
A.Independent of the initial concentration
B.Directly proportional to initial concentration
C.Inversely proportional to the square of initial concentration
D.Zero for all reactants
Explanation: For first order, t1/2 = ln 2 / k, which does not depend on [A]0.
10The minimum energy that colliding molecules must possess for an effective collision is called:
A.Lattice energy
B.Activation energy
C.Ionisation energy
D.Electron affinity
Explanation: Activation energy Ea is the energy barrier that must be overcome for reactants to form products (Arrhenius model).

About the BSEB Intermediate Chemistry Practice Questions

Verified exam format metadata for Bihar School Examination Board Intermediate Chemistry (Class 12 / I.Sc., Subject Code 118) is pending. The practice questions above remain available while official exam length, timing, passing score, fee, and administrator details are reviewed.