CBSE Class 10 Science Board Exam 2026, scheduled for 25 February 2026, will evaluate not only theoretical knowledge but also practical understanding through MCQs. Many questions are framed from experiments, diagrams, graphs, and lab observations. This makes last-minute revision of practical concepts extremely important for scoring well.
In the CBSE Board Class 10 Science Exam 2026, practical-based MCQs are derived from prescribed laboratory activities. These questions assess observation skills, understanding of procedures, interpretation of graphs and tables, identification of apparatus and diagrams, and real-life application of concepts. Students should thoroughly revise experiment results, ray diagrams, chemical reactions, and biological slides, as these areas frequently appear in the exam.
Important Practical-Based MCQs to Revise at the Last Minute
Below are subject-wise important topics with example questions for the CBSE Class 10 Science Board Exam 2026 based on expected question patterns.
1.1: Important Physics Practical-Based Topics to Cover MCQ Questions
In the CBSE Class 10 Science Exam 2026, Physics MCQs often come from experiments and numerical observations.
Important Topics:
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Ohm’s Law (V-I graph interpretation)
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Focal length of concave mirror and convex lens
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Magnetic field lines around a current-carrying conductor
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Resistance in series and parallel
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Image formation by lenses and mirrors
Focus On:
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Identifying correct ray diagrams
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Calculating resistance using given data
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Interpreting graph-based MCQs
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Checking correct SI units
Important Example of Practical-Based Physics MCQs
Q1. A converging mirror has radius of curvature 30 cm. What is its focal length?
A) 30 cm
B) 60 cm
C) 15 cm
D) 7.5 cm
Correct Answer: C) 15 cm
(क्योंकि f=R/2f = R/2f=R/2)
Q2. In a concave mirror, a virtual image is formed when the object is placed:
A) At focus
B) Beyond C
C) Between F and P
D) At C
Correct Answer: C) Between F and P
Q3. Which mirror is used in a solar furnace to concentrate sunlight?
A) Convex mirror
B) Plane mirror
C) Concave mirror
D) Cylindrical mirror
Correct Answer: C) Concave mirror
Q4. The side mirror of a vehicle is:
A) Concave mirror
B) Convex mirror
C) Plane mirror
D) Parabolic mirror
Correct Answer: B) Convex mirror
Q5. The relation between radius of curvature (R) and focal length (f) of a spherical mirror is:
A) R = f
B) R = 4f
C) R = 2f
D) R = f/2
Correct Answer: C) R = 2f
1.2: Important Chemistry Practical-Based Topics to Cover MCQ Questions
Chemistry practical-based MCQs in the CBSE Class 10 Science Exam 2026 are mostly observation-based.
Important Experiments:
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pH scale using indicators
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Properties of acids and bases
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Types of chemical reactions
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Reactivity series
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Properties of ethanol and ethanoic acid
Revise:
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Colour change in litmus and indicators
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Gas evolution tests (CO₂, H₂)
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Balanced chemical equations
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Common mistakes in reaction observations
Important Example of Practical-Based Chemistry MCQs
Q1. Which of the following is a chemical change?
A) Melting of ice
B) Boiling of water
C) Rusting of iron
D) Dissolving sugar in water
Correct Answer: C) Rusting of iron
Q2. The pH of a neutral solution at 25°C is:
A) 0
B) 14
C) 7
D) 1
Correct Answer: C) 7
Q3. Which gas is released when an acid reacts with a metal?
A) Oxygen
B) Hydrogen
C) Nitrogen
D) Carbon dioxide
Correct Answer: B) Hydrogen
Q4. The chemical formula of washing soda is:
A) NaHCO₃
B) Na₂CO₃·10H₂O
C) NaCl
D) NaOH
Correct Answer: B) Na₂CO₃·10H₂O
Q5. Oxidation is defined as:
A) Gain of hydrogen
B) Loss of oxygen
C) Gain of electrons
D) Addition of oxygen
Correct Answer: D) Addition of oxygen
1.3: Important Biology Practical-Based Topics to Cover MCQ Questions
Biology practical MCQs in the CBSE Class 10 Science Exam 2026 focus on diagrams and identification.
Important Areas:
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Parts of the human heart and brain
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Structure of nephron
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Stomata experiment
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Slide identification (plant and animal tissues)
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Mendelian cross (Punnett square)
Practice:
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Label-based MCQs
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Diagram identification questions
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Assertion-reason type questions
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Blood circulation pathway
Important Example of Practical-Based Biology MCQs
Q1. The image formed on the retina of the human eye is:
A) Virtual and erect
B) Real and inverted
C) Virtual and inverted
D) Real and erect
Correct Answer: B) Real and inverted
Q2. The part of the eye responsible for adjusting focal length is:
A) Retina
B) Iris
C) Ciliary muscles
D) Cornea
Correct Answer: C) Ciliary muscles
Q3. The defect in which a person cannot see nearby objects clearly is:
A) Myopia
B) Hypermetropia
C) Cataract
D) Astigmatism
Correct Answer: B) Hypermetropia
Q4. The light-sensitive layer of the eye is:
A) Cornea
B) Retina
C) Pupil
D) Iris
Correct Answer: B) Retina
Q5. Accommodation of eye refers to:
A) Change in pupil size
B) Change in retina shape
C) Change in focal length of lens
D) Change in cornea curvature
Correct Answer: C) Change in focal length of lens
Smart Last-Minute Revision Strategy
To perform well in the CBSE Class 10 Science Exam 2026, follow this focused strategy:
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Revise all practical notebook experiments
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Practice MCQs from sample papers and pre-board papers
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Recheck diagrams and graphs
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Avoid rushing through “NOT correct” questions
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Solve at least one full mock paper
Quick revision videos and important question PDFs can help you revise practical-based MCQs in a structured way before the CBSE Class 10 Science Exam 2026.
Final 24-Hour Checklist for CBSE Class 10 Science Exam 2026
Before appearing for the CBSE Class 10 Science Exam 2026, ensure you:
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Revise Physics formulas and graph-based experiments
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Review Chemistry reaction observations
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Go through Biology labelled diagrams
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Practice 20–30 practical-based MCQs
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Sleep properly and avoid last-minute confusion
The CBSE Class 10 Science Exam 2026 requires clarity of concepts and careful reading of MCQs. Focus on accuracy, revise smartly, and stay confident during the exam.