CBSE Class 6 Science Question Paper Set 21

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Welcome! Check out CBSE Class 6 Science Question Paper Set 21 right here, built according to current 2026-27 exam rules from CBSE, NCERT, and KVS. Get free Class 6 Science previous year question papers with step-by-step solutions to test your preparation level and fix weak points before final tests.

CBSE Class 6 Science Exam Question Papers

Try these Class 6 Science question papers to master the exam pattern and learn how marks are awarded. Practicing under exam conditions will make Class 6 students much faster and precise. Download the full CBSE Class 6 Science Question Paper Set 21 to evaluate your skills today.

Science Class 6 Question Paper PDF with Solutions

SECTION-A

1. Which part acts as the negative terminal of an electric cell? (1)
 
2. Name the plant from which linen is obtained. (1)
 
3. Write any one difference between scavengers and decomposers. Give an example of each.
 
4. Mohit, Rohan and Ravi have to dissolve maximum amount of sugar in the same amount of milk so as to win a game. Ravi took hot boiling milk while Rohan took ice
cold milk. Mohit managed to get milk at room temperature. Whom do you think would win the game and why?
 
5. Draw the symbols for the following electric components.
 
(i) Battery
 
(ii) Switch in ‘OFF’ Position
 
6. What is the purpose of separating components of a mixture? Write any three points giving one example each.
 
7. What are deficiency diseases? Which component of food may be lacking in the diet of the following people?
(a) A child suffering from Kwashiorkor.
(b) A person suffering from Scurvy.
(c) A person suffering from Rickets.
(d) A person suffering from Anaemia.
 
8. On a sunny morning, Abhishek was asked to observe the shadow of a tree on the ground and the image of the tree on the screen of a pinhole camera. Write any three differences which he could observe in the shadow and the image formed.
 
9. Write any two differences between reticulate and parallel venation. Give an example of each type.
 
10. (i) Why iron is made red hot for making different tools by a blacksmith? What type of change takes place in iron in this situation?
(ii) Explain how he would fix wooden handle of hammer into its iron blade?
 
11. Compare cotton and wool fibres under the following heads
(i) Source of fibre
(ii) Methods used to make fabric from yarn
(iii) Hand operated device used to make fabric from yarn
 
12. Both conductors and insulators play an important role in electrical circuits. Justify this statement by giving two suitable examples.
 
13. Classify the following as reversible or irreversible change.
(i) Souring of milk.
(ii) Grinding of grain.
(iii) Melting of ice candy.
(iv) Boiling of egg.
(v) Folding of paper.
(vi) Batter to Idli
 
14. Give reasons for the following
(i) Fats are called energy stores of the body.
(ii) Farmers remove weeds from their crop field.
(iii) Shadow of the object is smaller in the afternoon.
 
15. Mention any three ways by which nutrients are lost in the process of cooking and preparations.
 
16. (i) How a saturated solution of salt in water is prepared?
     (ii) Draw a flowchart to separate a mixture of sand and salt from its mixture.
 
17(.i) (i) Why we cannot easily pull out the plants from soil?
 (ii) Which root system lacks the primary root?
 (iii) What is the relationship between the root system and the venation of leaf?
 (I (iv) Name the structure that allows exchange of gases in leaves.
(v) Why leaf plucked from a plant kept in sunlight shows a positive test for starch?
 
18(i.) (a) (i) Classify the following objects or materials as opaque, transparent, translucent. Air, Water, A wooden board, Fog, A wall, Butter paper.
         (b)Write any two characteristics of an image formed by plane mirror.
 
19. (a) Name the process of separation in each case.
(i) Rice flakes and Corn.
(ii) Iron nails mixed with sand.
(iii) Butter from milk.
(iv) Flour with bran.
(v) Tea leaves from tea.
(vi) Lady’s finger mixed with french beans.
(b) Write any two differences between filtration and sieving.
OR
(i) Define winnowing. State its principle and give an example of where is it used?
(ii) Mention any two situations where hand picking can be used conveniently for separating substances.
 
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Class 6 Science Past Exam Papers & Resources

Analyzing previous exam trends is vital for Class 6 students, making the CBSE Class 6 Science Question Paper Set 21 above an essential resource. You can conveniently download these past papers for Class 6 Science in a convenient PDF format for the last 10 years. Regular practice helps decode question complexities and tests styles, ensuring full readiness for upcoming descriptive and objective assessments.

Master Marking Schemes and Time Management

Consistent practice using the CBSE Class 6 Science Question Paper Set 21 is a proven strategy to elevate your Class 6 Science performance. These documents clarify the official marking scheme and framework followed by the CBSE. Simulating real test conditions at home helps hone your time management abilities, ensuring you finish your Science paper comfortably within the official time limit.

Mastering Numerical & Conceptual Problems

Having the CBSE Class 6 Science Question Paper Set 21 in PDF format allows you to revise key concepts anywhere, even without an internet connection. These sets are a reliable tool to practice numerical problems and understand the correct approach to all types of answers. After solving the questions, you should compare your work with the solutions provided by our teachers. Along with these papers, students should always solve the Class 6 Science sample papers and MCQ tests online for a complete revision.

FAQs

Where can I download the official PDF for CBSE Class 6 Science Question Paper Set 21?

The CBSE Class 6 Science Question Paper Set 21 is available for download on StudiesToday.com. It includes complete set with all sections so that Class 6 students can practice with the exact same paper that came in the CBSE exams.

Are the solutions for CBSE Class 6 Science Question Paper Set 21 based on the official CBSE marking scheme?

Yes, the solutions for CBSE Class 6 Science Question Paper Set 21 are prepared by subject matter experts as per official marking scheme. Class 6 students will understand the structure of answers and 'step-marks' methodology Science.

How does solving CBSE Class 6 Science Question Paper Set 21 help in preparing for the 2026 exams?

Solving previous year papers like CBSE Class 6 Science Question Paper Set 21 is important to understand repeat themes and question difficulty levels of Science. It helps Class 6 students to test their time management skills too.

Can I access CBSE Class 6 Science Question Paper Set 21 in different languages?

Yes, where applicable, CBSE Class 6 Science Question Paper Set 21 is available in both English and Hindi mediums. All students from Class 6 can access Science study material in their preferred language.

Is there a charge to download the CBSE Class 6 Science solved papers?

No, all previous year question papers on StudiesToday, including CBSE Class 6 Science Question Paper Set 21, are provided free of charge in mobile-friendly PDF.