TBSE Class 10 Question Paper 2026 Science Physics Chemistry

FOR TBSE CLASS 10 EXAM PREPARATION

TBSE Class 10 2026
Question Paper ·
Science Physics
Chemistry
EXAM YEAR TYPE SUBJECT

TBSE Class 10 2026 Question Paper Science Physics Chemistry

Notes · Sample Papers · Previous Year Papers · Mock Tests

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I. Choose the correct answer :
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1. Where should an object be placed in front of a convex lens to obtain a real image of
the same size as the object?
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(a) at the principal focus of thealens
(b) at a distance twice the focal length
(c) at infinity
(d) in between the optical centre and principal focus of the lens
2. The change in focal length of an eye-lens is caused by the action of -
(a) Pupil
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(b) Retina
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(a) Reduces substantially
(b) Does not change
(c) Increases heavily
(d) Vary continuously

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II. Answer the following questions in one word / sentence :
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4. What is the S.I. unit of power of a lens?
5. When white light is dispersed through a prism, which colour deviates the most.
6. Name a device that helps to maintain a potential difference across a conductor.
7. In a current-carrying solenoid, what is the direction of the magnetic field lines?

III. Answer the following question briefly :
8. The refractive index of glass is 1.5 and of water is 1.33. Which medium bends light
more? Explain with reason.

IV. Answer the following question briefly :
9. (a) What is meant by power of accommodation of the eye?
(b) A student has difficulty in reading the blackboard while sitting in the last row.
What could be the defect the child is suffering from? How can it be corrected?
OR
A person's near point of eye is 50 cm and far point of eye is 2 m.
(a) Name the defects of vision of eye he is suffering from.
(b) Suggest suitable lenses to correct each defect.

V. Answer the following questions :
10. (a) State Joule's Law regarding the thermal effect of electric current.
(b) Which metal is usually used to make the filament of an electric bulb?

11. (a) What is the difference between overloading and short-circuit?
(b) Write two properties of magnetic field lines.
(c) What type of energy is converted to what type of energy in an electric generator?
OR
(a) What is the function of an earth wire?
(b) Write one application of magnetism in medical field.
(c) State Fleming's Left-Hand Rule.

VI. Answer the following question briefly :
12. (a) On what factors does the refractive index depend?
(b) What do you mean by "refractive index of water is 1.33"?
(c) An object 4.0 cm in size, is placed at 25.0 cm in front of a concave mirror of
focal length 15 cm. At what distance from the mirror should a screen be placed in order
to obtain a sharp image? Find the nature and the size of the image.

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OR
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(a) A doctor has prescribed a corrective lens of power +1.5 D. Find the focal length of
the lens. Is the prescribed lens diverging or converging?
(b) Which type of mirror is used as a view-finder in vehicles and why?
Section - B : Chemistry
VII. Choose the correct answer :
13. Which of the following is not a chemical change?
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(a) Rusting of iron
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14. Which of the following
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metals exist in liquid state at room temperature?
e (b) Sodium (c) Gallium (d) Bromine l a
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lof the following does not fall under same homologous series?
(a) Mercury
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15. Which
(a) CH4 (b) C2H6 (c) C3H8 (d) C4H10

VIII. Answer very briefly :
16. Balance the equation : Fe+H2O→Fe3O4+H2
17. Which metal has the lowest thermal conductivity?
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18. Name the functional group without carbon.
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IX. Answer the following questions briefly
19. Which gas is usually liberatedawhen an acid reacts with a metal? How will you test
for the presence of this gas?

20. (a) Write the IUPAC name of
(b) Write the structural formula of Ethanoic acid.
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X. Answer the following question briefly :

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21. (a) Why is nitrogen gas used to fill the bottles of oily or fatty foods before sealing

las them?
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4Na+O2→2Na2O
OR
(a) What happens when iron pin is dipped into copper sulphate solution? Also write the
equation.
(b) During electrolysis of acidulated water, which gas is liberated at cathode and which at
anode?
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XI. Answer the following questions briefly :
22. (a) Give one example of Antacid.
(b) What is the common name of the compound CaOCl2?
(c) Give two important uses each of washing soda and baking soda.
23. (a) What type of oxides are formed when non-metals combine with oxygen?
(b) Write two differences between metal and non-metal on the basis of their
chemical properties.
(c) What is amalgam?
24. (a) What is hydrogenation? What is its industrial application?
(b) Name the hardest form of carbon.
(c) What is vinegar?
OR
(a) Draw two structural isomers having formula C4H10.
(b) Between soap and Detergent which one is more useful and why?
(For External Candidates Only)
Physics
25. Answer the following questions :
(a) The radius of curvature of a spherical mirror is 20 cm. What is its focal length?
(b) Write the S.I. unit of –
(i) Electric Potential Difference
(ii) Resistance
(c) Why is the colour of the clear sky blue?
Chemistry
26. Answer the following questions :
(a) Why is sodium kept immersed in kerosene oil?
(b) What is indicator? Name two indicators.
(c) Why should curd and sour substances not be kept in brass and copper vessels?

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