SAMPLE PAPER For 2026 Board Exam
Class – 10th
Subject : Science
Time allowed : 3hrs
- This question paper consists of 39 questions in 4 sections.
- All questions are compulsory. However, an internal choice is provided in some questions. A student is expected to attempt only one of these questions.
SECTION – A
A. Choose the correct option for multiple type questions:
1. The SI unit of power of lens is____
a) Newton ( ) b) Dioptre ( ) c) Hertz ( ) d) centimeter ( )
2. The chemical formula of plaster of Paris is –
a) Ca(OH)2 ( ) b) CaSO41⁄2H2O( ) c) CaSO4.2H2O( ) d) CaC03 ( )
3. The radius of Curvature of a spherical mirror is 5m, then the power of lens will be –
a) 2.5D ( ) b) 10m ( ) c) 0.25D ( ) d) None of these ( )
4. Which of the following is/are NOT the plant harmone :
a) Thyroxin ( ) Insulin ( ) Gibberallins ( ) Auxin ( )
5. The human eye forms the image of an object at its-
a) Pupil ( ) b) retina ( ) c) cornea ( ) d) lens ( )
6. Carbon has __valence electrons in its outer shell-
a) 2 ( ) b) 6 ( ) c) 8 ( ) d) 4 ( )
7. Which of the following groups contain only one biodegradable items-
a) grass, flower and leather ( ) b) grass, wood and plastic ( )
c) fruits, cake and vegetables ( ) d) paper, plastic and polythene ( )
8. Name the element X that is liquid at room temperature.
9. Write the name of two allotropes of carbon.
SECTION – B
10. Write the equation of Plaster of Paris.
11. Identify the substance that are oxidised and reduced in the following reaction-
ZnO + C → Zn + CO
12.Name the largest artery in human heart ?
13.Which gland is known as ‘MASTER GLAND’ in our Body ?
14.Name the largest and smallest cell in human body.
15.Name the gland that secreates both hormones and enzymes also.
16. How is the sex of the child determined in human beings ?
17. What is Snell’s law OR laws of refraction ?
18. What do you mean by Amphoteric Oxides? choose the Amphoteric Oxides among the following –
Na2O , ZnO , CO3 , Al2O3
SECTION – C
19. Which sodium compound is used an anta-acid ? Write its chemical formula and chemical name.
20.What is difference between myopia and hypermetropia? Name the lens that is used for correcting them.
21. Why respiration is called an exothermic reaction? Give its equation also.
22. A shiny brown coloured element ‘X’ on heating in air becomes black in colour. Name the element ‘X’ and the black coloured component formed.
23. Write any two properties of magnetic lines.
24. Define 1 Newton of force.
25. How food and water transports in plants?
26. Explain the structure of a human eye with a labelled diagram.
27. Balance the following given chemical reactions-
SECTION – D
28. What is an ecosystem? Describe its major components.
OR
How producers and consumers plays an important role in an ecosystem?
29. Derive the Second equation of motion.
OR
What are the three laws of newton? Define it with example.
30. Two electric bulb A & B are marked 60W, 240V, 100W, 240V respectively, Calculate which one of the two has greater resistance .
OR
40 Coulomb of charges flows through a conductor in 10 sec. Calculate the rate of current flowing through a conductor.
31. What happens when –(Write only chemical equation for any four)
a) Zinc reacts with sodium hydroxide solution.
b) An iron nail is dipped in copper sulphate solution.
c) Quick lime reacts with chlorine and gets reduced.
d) Ethanoic acid reacts with sodium bicarbonate.
e) When Gypsum is heated at 373k.
32. Differentiate between roasting and calcination with example.
OR
What is Esterification? Explain with chemical equation.
33. Write the IUPAC name for the following –
a) 
b) 
c) 
d) 
OR
How many structural isomers can you draw for pentane?
34. Differentiate between pollination and fertilization process?
35. What is reflex action? What is the role of brain in this process?
36. What is the role of kidney in filtration of blood in human body?
OR
How blood is transport in our body? Name the components of blood with their characterstics.
37. Draw a labelled diagram of human digestive system.
OR
What are tropic levels in an ecosystem? Explain with diagram
38. a) In the given diagram, three resistors R1,R2 and R3 are connected in parallel and the combination is connected to a battery,an ammeter, a voltmeter and a key. Draw suitable circuit diagram to show the arrangement of these circuit components along with direction of flowing current.
b) Calculate the equivalent resistance of the following network :
OR
a) An object 4 cm in size, is placed 25 cm in front of a concave mirror of focal length 15 cm.
b) Find the following –
39. a) At what distance from the mirror should a screen be placed in order to obtain a sharp image?
b) The size and nature of the image.
c) Draw a ray diagram to show the formation of image in this case.
This science sample paper has consisting NCERT based questions for your practice.
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