Final Exam Paper Science - Set 3

Time: 3 Hours
Maximum Marks: 80

General Instructions

The question paper consists of 34 questions divided into four sections: A, B, C, and D.

• All questions are compulsory.
• Section A: Questions 1 to 15 are multiple-choice questions, carrying 1 mark each. 
  Select the most appropriate response.
• Section B: Questions 16 to 22 are short-answer questions, carrying 2 marks each.
• Section C: Questions 23 to 31 are short-answer questions, carrying 4 marks each.
• Section D: Questions 32 to 34 are short-answer questions, carrying 5 marks each.

Syllabus: The Final Exam Question Paper is framed from the following chapters : Heat Transfer in Nature, Measurement of Time and Motion, Life Processes in Animals, Life Processes in Plants, Light: Shadows and Reflections, Earth, Moon and the Sun

Section A

Q1. The transfer of heat in liquids and gases mainly occurs by: (1 mark)
(a) Conduction
(b) Convection
(c) Radiation
(d) Evaporation

Q2. An odometer measures: (1 mark)
(a) Speed
(b) Distance
(c) Time
(d) Acceleration

Q3. The process of expelling semi-solid waste (stool) from the body is called: (1 mark)
(a) Digestion
(b) Absorption
(c) Egestion
(d) Transpiration

Q4.Which gas from the air is essential for plants to prepare starch? (1 mark)
(a) Oxygen
(b) Nitrogen
(c) Carbon dioxide
(d) Hydrogen

Q5. What is the term for the change in direction of light when it falls on a mirror? (1 mark)
(a) Refraction
(b) Diffusion
(c) Reflection
(d) Absorption

Q6. The time taken by Earth to complete one rotation is: (1 mark)
(a) 365 days
(b) 24 hours
(c) 27 days
(d) 1 year

Q7. Light-coloured clothes are preferred in summer because they: (1 mark)
(a) Absorb heat
(b) Reflect heat
(c) Conduct heat
(d) Convect heat

Q8. Non-uniform motion is when speed: (1 mark)
(a) Is constant
(b) Changes
(c) Is zero
(d) Is maximum

Q9. The large intestine in humans absorbs: (1 mark)
(a) Nutrients
(b) Water
(c) Proteins
(d) Fats

Q10. The raw materials for photosynthesis are: (1 mark)
(a) CO₂ and O₂
(b) CO₂ and H₂O
(c) O₂ and H₂O
(d) Glucose and O₂

Q11. A translucent object: (1 mark)
(a) Allows all light to pass
(b) Allows some light to pass
(c) Blocks all light
(d) Absorbs all light

Q12. What is the primary component of a Foucault pendulum? (1 mark)
(a) Short string with a light bob
(b) Long string with a heavy bob
(c) Metal rod with weights
(d) Spring with a small ball

Q13. How do birds break down their food in the absence of teeth? (1 mark)
(a) Using their tongue
(b) In the stomach by acids
(c) In a gizzard with the help of grit
(d) By chewing with beaks

Q14. What is the process of heat transfer from a hotter part of an object to a colder part without the particles themselves moving called? (1 mark)
(a) Conduction
(b) Convection
(c) Radiation
(d) Evaporation

Q15. What are the tiny balloon-like sacs in the lungs where gas exchange occurs? (1 mark)
(a) Bronchi
(b) Windpipe
(c) Nasal passages
(d) Alveoli

Section B

Q16. What are aquifers, and how do humans access groundwater from them? (2 Mark)

Q17. How can the speed of an object be calculated? Write the formula and explain the SI unit of speed.  (2 Mark)

Q18. Explain how the rotation of the Earth causes day and night. Include the directions of sunrise and sunset in your answer.  (2 Mark)

Q19. What is an oscillation of a pendulum, and how is its time period defined?  (2 Mark)

Q20. What is rumination, and which animals are called ruminants? (2 Mark)

Q21. Why are LED lamps considered better than traditional lamps, and what should be done with them at the end of their life? (2 Mark)

Q22. Explain how ice stupas help in water conservation in Ladakh. (2 Mark)

Section C

Q23. How does the length of daytime vary in the Northern Hemisphere during June and December, and how are the seasons in the Southern Hemisphere related? (4 Mark)

Q24. Explain the process of heat transfer by radiation and give examples from daily life. How does it differ from conduction and convection explain with the help of diagram? (4 Mark)

Q25. Outline the respiratory system in humans. (4 Mark)

Q26. Explain how leaves are adapted for photosynthesis and briefly describe the process with its chemical reaction. (4 Mark)

Q27. Explain the characteristics of images formed by a plane mirror with the help of an activity. (4 Mark)

Q28. Explain Earth's revolution and its effects. (4 Mark)

Q29. What is infiltration? Explain how water seeps differently through clay, sand, and gravel. (4 Mark)

Q30. Data for an object covering distances in different intervals of time are given in the following table. If the object is in uniform motion, fill in the gaps in the table. (4 Mark)

Q31. Explain how plants respire and describe an experiment to show it. (4 Mark)

Section D

Q32. Draw the well labelled diagram of Digestive system in Humans. (5 Mark) 

Q33. With the help of suitable examples and activities, explain the reflection of light. How can you demonstrate that a mirror changes the direction of light? (5 Mark)

Q34. Explain respiration in organisms, focusing on differences between plants and animals. (5 mark)

You can access the solutions of this paper here.