How to Get Full Marks in CBSE Board Practicals

CBSE board practicals carry 30 marks per subject — that is 90 marks across PCB that are easier to score than theory. Here is how to get full marks.

Practical Marks Breakdown

• Experiment performance — 8-10 marks. Practise beforehand.
• Record/Project — 5-7 marks. Neat, complete, with proper format.
• Viva voce — 5-7 marks. Know experiments + related theory.
• Investigatory project — 3-5 marks. Choose an interesting topic.

Physics Practical Tips

• Practise using apparatus — vernier callipers, screw gauge, potentiometer.
• Record readings neatly — use tables with proper units.
• Learn error analysis — examiners appreciate discussion of errors.
• Viva — expect questions linking the experiment to theory.

Chemistry Practical Tips

• Know salt analysis thoroughly — this is the most common practical.
• Practise titrations — accuracy and technique matter.
• Label everything — solutions, apparatus, and observations.
• Record book — balanced equations for every reaction performed.

Biology Practical Tips

• Diagrams are crucial — large, labelled, and neat.
• Know the specimens — identify and classify on sight.
• Practise microscope slides — cell types, tissue sections.
• Viva — focus on ecological principles and physiological processes.

Based on CBSE practical exam guidelines 2026. Last updated: February 2026.