CBSE 9 Science · IA
Internal Assessment and Practical Work
Syllabus-listed 20-mark internal-assessment component: periodic assessment, multiple assessment, portfolio, and subject-enrichment practical work. Practical work includes mixture separation, conservation of mass, cell slides, tissue slides, specimen identification, energy conservation with a pendulum, pulse speed, simple machines, Newton's second law, and motion graph activities.
Test yourself
A focused, distraction-free run through 25 multiple-choice questions. Hints if you need them; your score at the end.
Difficulty guide
The label describes the problem, not your ability.
1/5 - Foundational
Warm-up setup; checks one basic idea.
2/5 - Routine exam skill
Normal syllabus skill; usually one main rule or interpretation.
3/5 - Standard multi-step
Exam-style problem with multiple steps or a common trap.
4/5 - Hard exam skill
High-end exam problem; combines methods carefully.
5/5 - Challenge
Stretch problem beyond normal exam pressure.
Topic IA.1
Solutions, Suspensions, Colloids and Separation
Preparation and comparison of true solutions, suspensions, colloids, and separation by funnel, chromatography, sublimation, and coagulation.
Topic IA.2
Conservation of Mass and Chemical Lab Practice
Verification of conservation of mass, safe handling of chemicals, and evidence-based reaction records.
Topic IA.3
Microscopy, Cells, Tissues and Specimens
Temporary mounts, prepared slides, budding, spore formation, flowers, and biological specimen identification.
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Topic IA.4
Energy, Pulse Speed and Mechanical Advantage
Simple pendulum energy conservation, pulse speed in a stretched string or slinky, and mechanical advantage of levers.
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Topic IA.5
Newton's Second Law, Motion Graphs and IA Records
Trolley-pulley investigation, inclined-plane motion graphs, variables, graphing, portfolio and internal-assessment records.