Hello students, CBSE Science Sample Papers Class 10 is what we have provided in this article. CBSE Science Sample Papers Class 10will help candidates to practice for their upcoming exams.CBSE Science Sample Paperare essential for candidates to practice and solve the paper to get confident about the upcoming exam. CBSE Science Sample Paper Solutionwill not only help you in the exams with time management but also with some of the repeated questions which will help you with the few marks which can lead to extra scores…!!!
CBSE stands for Central Board of Secondary Education.
It conducts board exams for 10th and 12th standard for students every year.
It 10th Standard have 5 subjects English, Math, Social Science, Hindi, and Science.
CBSE Science Sample Paper
CBSE Science Sample Papers Class 10
1. Reema took 5ml of Lead Nitrate solution in a beaker and added approximately 4ml of Potassium Iodide solution to it. What would she observe?
A. The solution turned red.
B. Yellow precipitate was formed.
C. White precipitate was formed.
D. The reaction mixture became hot
2. The chemical reaction between copper and oxygen can be categorized as:
A. Displacement reaction
B. Decomposition reaction
C. Combination reaction
D. Double displacement reaction
3. Why is it important to balance a skeletal chemical equation?
A. To verify the law of conservation of energy.
B. To verify the law of constant proportion.
C. To verify the law of conservation of mass.
D. To verify the law of conservation of momentum
4. Opening and closing of stomatal pore depends on:
A. Atmospheric temperature
B. oxygen concentration around stomata
C. carbon dioxide concentration around stomata
D. water content in the guard cells
5. Consider these indices of refraction: glass: 1.52; air: 1.0003; water: 1.333. Based on the refractive indices of three materials, arrange the speed of light through them in decreasing order.
A. The speed of light in water > the speed of light in air > the speed of light in glass.
B. The speed of light in glass > the speed of light in water > the speed of light in air.
C. The speed of light in air > the speed of light in water > the speed of light in glass.
D. The speed of light in glass > the speed of light in air > the speed of light in water.
6. In which of the following groups of organisms, blood flows through the heart only once during one cycle of passage through the body?
A. Rabbit, Parrot, Turtle
B. Frog, crocodile, Pigeon
C. Whale, Labeo, Penguin
D. Shark, dog fish, sting ray
7. Plants use a completely different process for excretion as compared to animals. Which one of the following processes is NOT followed by plants for excretion?
A. They can get rid of excess water by transpiration.
B. They selectively filter toxic substances through their leaves
C. Waste products are stored as resins and gums in old xylem.
D. They excrete waste substances into the soil around them.
8. If the power of a lens is – 4.0 D, then it means that the lens is a
A. concave lens of focal length -50 m
B. convex lens of focal length +50 cm
C. concave lens of focal length -25 cm
D. convex lens of focal length -25 m
9. In a person the tubule part of the nephron is not functioning at all. What will its effect be on urine formation?
A. The urine will not be formed.
B. Quality and quantity of urine is unaffected.
C. Urine is more concentrated.
D. Urine is more diluted.
10. If the real image of a candle flame formed by a lens is three times the size of the flame and the distance between lens and image is 80 cm, at what distance should the candle 14 be placed from the lens?
B. -40 cm
C. -40/3 cm
D. -80/3 cm
11. Consider the situation where:
An object is 3 cm (height)
Mirror is concave with 6 cm focal length.
Object is placed at the centre of curvature.
Which of the following options are correct?
A. The mirror will produce an image of magnification +1.5.
B. The mirror will produce an image of magnification -1.
C. The mirror will produce an image of magnification +1.
D. The mirror will produce an image of magnification -1.5.
12. What is the saturated solution of Sodium Chloride called?
B. Lime water
C. Slaked lime
D. Soda water
13. What is the pH of the acid which is used in the formation of common salt?
A. Between 1 to 3
B. Between 6 to 8
C. Between 8 to 10
D. Between 11 to 13
14. In the neutralization reaction when excess acid is added to an alkali, salt and water are produced. What is the nature of the solution after the reaction occurs?
15. Select the option which gives correct function and /or characteristic: of the four parts of the human respiratory system.
A. Alveoli: Thin-walled sac-like structures for exchange of gases.
B. Diaphragm: It is pulled up when we breathe in.
C. Trachea: It is supported by bony rings for conducting inspired air.
D. Ribs: When we breathe out, ribs are lifted.
16. Which of the following solutions are electrolytes? i. Dil. HCl ii. Sugar Solution iii. Alcohol in water iv. Lime water 23
A. i and ii
B. i and iv
C. ii, iii and iv
D. i, ii and iv
17. NalinI draws a ray diagram for an object in front of a concave mirror. She draws a ray starting from the top of the object and falling on the mirror perpendicularly. The ray after reflection will
A. pass through focus.
B. pass through a pole.
C. pass through the centre of curvature.
D. pass through any point on the principal axis.
A convex lens has a focal length of 10 cm. The object of height 2 mm is placed at a distance of 5 cm from the pole. Find the height of the image.
A. 4 cm
B. 6.67 mm
C. 4 mm
D. 3.33 mm
CASE In an experiment, Pooja used an equilateral triangular glass prism and projected a narrow beam of white light source from one side of the surface of the prism. She placed a screen on the other side and saw many colours appearing as patches on the screen. But when she used a red light source, she could only see a red patch on the screen. Similarly she used a blue and green light source and could only see one colour patch on both occasions.
19. The phenomenon that she was trying to demonstrate was:
The reason why she could no see any other colour when the red light was used was because:
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