CBSE Class 10 Science Expected Question Paper 2025

Subject

Questions

Physics

• A 4 cm tall object is perpendicular to the principal axis of a convex lens of focal length 24 cm. The distance of the object from the lens 16 cm. Find the position, size, and nature of the image formed, using the lens formula.

• Write the mathematical expression for Joules Law of Heating.

• Compute the heat generated by transferring 96000 coulombs of charge in two hours through a potential difference of 40 V.

Chemistry

• What change is observed in colour when white silver chloride is left exposed to sunlight? State the type of chemical reaction in this change.

• Identify the acid and the base whose combination forms the common salt that you use in your food. Write its chemical formula and chemical name of the salt.

• What is rock salt? Mention its colour and the reason due to which it has this colour.

Biology

• How is the sex of the child fixed during the fertilization, step in human beings?

• “Reflex arcs continue to be more efficient for quick response”. Justify this statement by giving reason.

• What are plant hormones? Name the plant hormones for Promotion of Cell Division, Inhibition of Growth, and Elongation of Cells