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CBSE Class 6  >  Class 6 Notes  >  Sample Papers For   >  Half-Yearly Class 6 Science Set 3

Half-Yearly Class 6 Science Set 3

Time: 3 Hours
Maximum Marks: 80
General Instructions:
(i) The question paper consists of 34 questions divided into four sections: A, B, C, and D.
(ii) All questions are compulsory.
(iii) Section A: Questions 1 to 15 are multiple-choice questions, carrying 1 mark each. Select the most appropriate response.
(iv) Section B: Questions 16 to 22 are short-answer questions, carrying 2 marks each.
(v) Section C: Questions 23 to 31 are short-answer questions, carrying 4 marks each.
(vi) Section D: Questions 32 to 34 are long-answer questions, carrying 5 marks each.
(vii) Answer the questions in the space provided or on a separate answer sheet as instructed.
(viii) Use of calculators is not permitted.

Syllabus: The half-yearly question paper is framed from the following chapters: The Wonderful World of Science, Diversity in the Living World, Mindful Eating: A Path to a Healthy Body, Exploring Magnets, Measurement of Length and Motion, Materials Around Us 

Section A

Q1. Which of the following is NOT a characteristic of living organisms? (1 mark)

(a) They grow
(b) They reproduce
(c) They respond to stimuli
(d) They always remain the same size

Q2. What is the SI unit of length? (1 mark)
(a) Centimetre
(b) Kilometre
(c) Metre
(d) Millimetre

Q3. A small plant with a soft and green stem is known as a: (1 mark)
(a) Tree
(b) Shrub
(c) Climber
(d) Herb

Q4. Which nutrient is primarily recognized as "body-building food"? (1 mark)
(a) Fats
(b) Proteins
(c) Carbohydrates
(d) Vitamins

Q5. When iron filings are spread over a bar magnet, where do they stick most prominently? (1 mark)
(a) In the middle of the magnet
(b) Only on the North pole
(c) Near the ends (poles) of the magnet
(d) Uniformly across the entire surface

Q6. Which of the following correctly represents the unit of volume in the International System of Units (SI)? (1 mark)
(a) Kilogram (kg)
(b) Litre (L)
(c) Cubic metre (m3)
(d) Gram (g)

Q7. Symptoms like bleeding and swollen gums are associated with the deficiency of which vitamin? (1 mark)
(a) Vitamin A
(b) Vitamin B1
(c) Vitamin C
(d) Vitamin D

Q8. The motion of an object moving to and fro about a fixed position is called: (1 mark)
(a) Linear motion
(b) Circular motion
(c) Periodic motion
(d) Oscillatory motion

Q9. Which metal is generally attracted by a magnet? (1 mark)
(a) Copper
(b) Aluminium
(c) Iron
(d) Plastic

Q10. Anything that occupies space and has mass is called: (1 mark)
(a) Volume
(b) Material
(c) Matter
(d) Weight

Q11. When an orange drops from a tree, its motion is classified as: (1 mark)
(a) Linear motion
(b) Circular motion
(c) Oscillatory motion
(d) Random motion

Q12. How are materials classified as 'hard'? (1 mark)
(a) They are lustrous.
(b) They are easy to compress or scratch.
(c) They are difficult to compress or scratch.
(d) They are transparent.

Q13. A wall or a piece of wood is a material through which you cannot see at all. This material is classified as: (1 mark)
(a) Transparent
(b) Translucent
(c) Opaque
(d) Lustrous

Q14. What is the relation between 1 metre (m) and 1 centimetre (cm)? (1 mark)
(a) 1 m = 10 cm
(b) 1 cm = 100 m
(c) 1 m = 100 cm
(d) 1 cm = 10 mm

Q15. Highly nutritious grains like jowar, bajra, and ragi are collectively referred to as: (1 mark)
(a) Pulses
(b) Junk foods
(c) Energy fillers
(d) Millets (Nutri-cereals)

Section B

Q16. Define linear motion and provide one example of an object exhibiting this motion. (2 marks)

Q17. What is the typical relationship found between leaf venation and root systems in dicotyledons (dicots)? (2 marks)

Q18. Explain why the adoption of standard units like SI units became necessary. (2 marks)

Q19. How do you test a food item for the presence of starch? What is the specific observation that indicates a positive result? (2 marks)

Q20. State two differences between herbs and shrubs. (2 marks)

Q21. Define a habitat and give one example of an aquatic habitat. 

Q22. Differentiate between magnetic materials and non-magnetic materials. (2 marks)

Section C

Q23. Explain the concept of a reference point and why it is essential when defining whether an object is at rest or in motion. (4 marks)

Q24. Compare monocot and dicot plants based on three features: leaf venation, root system, and seed structure. (4 marks)

Q25. Describe the step-by-step procedure to test a food item for the presence of fats using paper. What is the observable result? (4 marks)

Q26. Differentiate between transparent, translucent, and opaque materials based solely on visibility. 

Q27. Why are millets called nutri-cereals? List two nutritional benefits provided by them. (4 marks)

Q28. Why are Vitamins and Minerals collectively called protective nutrients? List one essential function of Vitamin D. (4 marks)

Q29. Explain why a magnet should never be rubbed with another piece of iron. What effect does it have on the magnet? (4 marks)

Q30. What is meant by periodic motion? Give two examples from daily life. (4 marks)

Q31. Define matter, mass, and volume. State the units used to measure mass and volume. (4 marks)

Section D

Q32. Explain two structural adaptations of the Deodar tree that enable it to survive in mountainous regions and clarify why these features are necessary in such cold environments. (5 marks)
Q33. Magnets can lose their properties if not handled correctly. State two ways magnets should not be treated (cautions). Then, describe the recommended method for storing a pair of bar magnets safely. (5 marks)
Q34. Define a balanced diet. Discuss three different factors (excluding cost and availability) that determine why the nutritional requirements for individuals are not the same for everyone. (5 marks)

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FAQs on Half-Yearly Class 6 Science Set 3

1. What are the three states of matter?
Ans. The three states of matter are solid, liquid, and gas. In solids, particles are closely packed together and vibrate in place, giving them a fixed shape and volume. In liquids, particles are close but can move past each other, allowing them to take the shape of their container while maintaining a constant volume. In gases, particles are far apart and move freely, filling the entire volume of their container.
2. What is the role of the sun in the water cycle?
Ans. The sun plays a crucial role in the water cycle by providing the energy needed for evaporation. When the sun heats bodies of water, it causes water to change from liquid to vapour, rising into the atmosphere. This vapour then cools and condenses to form clouds, ultimately leading to precipitation in the form of rain or snow, which replenishes water sources.
3. How do plants reproduce?
Ans. Plants reproduce primarily through seeds and spores. In flowering plants, reproduction occurs through a process called pollination, where pollen from the male part of the flower fertilises the ovule in the female part. This leads to the formation of seeds, which can grow into new plants. Non-flowering plants, such as ferns, reproduce through spores, which develop into new plants under suitable conditions.
4. What is the importance of food chains in an ecosystem?
Ans. Food chains are important in an ecosystem as they illustrate the flow of energy and nutrients from one organism to another. They show how producers, such as plants, are eaten by primary consumers, like herbivores, which in turn are consumed by secondary consumers, such as carnivores. This interconnectedness helps maintain balance in the ecosystem, ensuring that various species can thrive and survive.
5. What are the different types of forces?
Ans. The different types of forces include contact forces and non-contact forces. Contact forces occur when objects are physically touching, such as friction, tension, and normal force. Non-contact forces, on the other hand, act at a distance and include gravitational force, electromagnetic force, and nuclear force. Each type of force plays a significant role in the movement and interaction of objects in the physical world.
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