CBSE Class 10 Science Compartment Exam 2025 was conducted on 18 July 2025 (Friday) for 3 hours, from 10:30 AM to 1:30 PM. The exam is worth a total of 100 marks, with 80 marks allocated to the theory paper and 20 marks for the internal assessment.
CBSE Class 10 Compartment Question Paper 2025 for Science along with the solutions is available here. The exam included key topics like Physics, Chemistry, Biology, Environmental Science, and Practical-based questions.
Also Check: CBSE Class 10 Question Paper 2025 With Solution Pdf
CBSE Class 10 Science Compartment Question Paper 2025 (Sample Paper)
| CBSE Class 10 Science Compartment Question Paper | Download PDF | Check Solution |
In which of the following reactions is a combination reaction taking place?
I. CuO + H\(_2\) \(\xrightarrow{\Delta}\) Cu + H\(_2\)O
II. ZnO + C \(\rightarrow\) Zn + CO
III. 4Na + O\(_2\) \(\rightarrow\) 2Na\(_2\)O
IV. CH\(_4\) + 2O\(_2\) \(\rightarrow\) CO\(_2\) + 2H\(_2\)O
A few drops of turmeric solution are added to a colorless liquid. If the liquid turns red in color, the liquid could be:
The acid present in nettle leaves is:
Select the hydrocarbon from the following which contains one C\(\equiv\)C triple bond and one C–C single bond:
When barium chloride and sodium sulphate react together in aqueous solution, an insoluble substance is formed with sodium chloride in the aqueous solution. This reaction is an example of:
In the following reaction, what is the name of compound ‘A’?
\[ NaCl + NH_3 + H_2O + CO_2 \rightarrow A + NH_4Cl \]
Choose the correct statement regarding the given reaction: \[ CuO + H_2 \rightarrow Cu + H_2O \]
In the human respiratory system, the correct pathway of air during inhalation is:
A doctor advised a patient to take an insulin injection. What could be the reason?
The movement of the sunflower plant is a response to which type of stimulus?
In the bread mould (Rhizopus), the structures labeled A and B are respectively:
In plants, waste products like resin and gum are stored in:
A real image of a body is formed by a concave mirror of 50 cm focal length at a distance of –1 focal length. What is the distance between the image and the object?
When we connect multiple electrical appliances to a circuit with fixed current rating using the same socket:
Consider the following statements:
Every step in a food chain is called a trophic level.
Decomposers convert complex organic matter into simple substances that mix with the soil.
In a food chain, energy increases from lower to higher trophic level.
Interlinking of multiple food chains forms a food web.
Which of the above statements are correct?
What is meant by biomagnification?
Assertion (A): Soap does not form lather with hard water.
Reason (R): Hard water contains salts of calcium and magnesium which react with soap to form insoluble substances (scum).
Assertion (A): Both plants and animals exhibit chemical coordination.
Reason (R): Plant hormones regulate directional growth while in animals, hormones do not control directional growth.
Assertion (A): Kilowatt-hour (kWh) is the commercial unit of electrical energy.
Reason (R): \( 1\, kWh = 10^6\, Joules \)
Assertion (A): An ozone molecule (O\(_3\)) is formed from three atoms of oxygen.
Reason (R): Ozone protects life on Earth from harmful ultraviolet (UV) radiation.
"Sex of a newborn baby in humans depends on the father, not the mother." Confirm this statement with the help of a flow chart.
Identify one organ in (i) male and (ii) female reproductive system of humans which produces gametes and also acts as an endocrine gland. Also name the hormone secreted by each.
(a) Write one advantage of using cloth bags instead of plastic bags.
(b) Mention any two methods for safe disposal of solid waste in urban areas.
A metal 'A' reacts violently with cold water and the released gas catches fire. Another metal 'B' floats on water and moves rapidly on the surface. Metal 'C' does not react with cold or hot water but reacts with steam. Metal 'D' does not react with water in any form. Identify metals 'A', 'B', 'C', and 'D'.
When two compounds — sodium chloride and calcium chloride — are burned in a flame one by one, the flame turns into different colours.
(i) Write the name of the flame colours produced by:
Sodium chloride
Calcium chloride
(ii) Are these compounds soluble in non-polar solvents like kerosene or petrol? Justify your answer.
State Fleming’s Left-Hand Rule.
As shown in the diagram, an electron enters perpendicularly into a magnetic field. Using Fleming’s Left-Hand Rule, determine the direction of the force experienced by the electron.
Based on the given data, determine the image position formed by a spherical mirror: \[ u = -20\, cm, \quad f = -15\, cm \]
(b) Draw a ray diagram to show image formation by a concave mirror when the object is placed between focus and center of curvature.
Mention any two ways by which plants absorb carbon dioxide. Also explain the reason for opening and closing of stomata.
(i) Why do the members of a homologous series show similar chemical properties?
(ii) What is the difference in number of carbon and hydrogen atoms between two consecutive members of a homologous series? Give one example each of (i) Alkanes, (ii) Alcohols, (iii) Aldehydes.
(i) Explain why carbon forms strong bonds with other elements.
(ii) Why do covalent compounds have low melting and boiling points?
(iii) Draw electron dot structure of chlorine (atomic number 17).
A person must hold reading material at a distance greater than 25 cm for clear vision.
(i) What is the name of this visual defect?
(ii) Draw a ray diagram to show its correction.
(i) What is photosynthesis? Name the organs and organelles (cell structures) where photosynthesis occurs.
(ii) Where is oxygen released during this process? What happens to the carbohydrates that are not immediately used by plants?
Give one example each of (i) a natural ecosystem and (ii) an artificial (man-made) ecosystem.
Write a four-step aquatic food chain. Among them, which group of organisms is most important and why?
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