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CBSE Class 10 Science 2020 — Paper 31/1/3

80 marks · 3 hours · 30 questions (39 with the OR choices)

25 of its 39 questions also appear in 31/1/1 or 31/1/2; 14 are only in this paper.

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Free with an account: the board's time limit, marking at the end, and the answer to every question.

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Questions 1–2 · 1 mark each

  1. Q1 1 mark

    Also in 31/1/1 (Q1)

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  2. Q2 1 mark

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Questions 3–4 · 4 marks each

  1. Q3 4 marks

    Also in 31/1/1 (Q3), 31/1/2 (Q3)

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  2. Q4 4 marks

    Also in 31/1/1 (Q4), 31/1/2 (Q4)

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Questions 5–14 · 1 mark each

  1. Q5 1 mark

    Also in 31/1/1 (Q11)

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  2. Q6 1 mark

    Also in 31/1/1 (Q12)

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  3. Q7 1 mark

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  4. Q8 1 mark

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  5. Q9(a) 1 mark

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    OR
    Q9(b) 1 mark

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  6. Q10(a) 1 mark

    Also in 31/1/1 (Q10(a)), 31/1/2 (Q7(a))

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    OR
    Q10(b) 1 mark

    Also in 31/1/1 (Q10(b)), 31/1/2 (Q7(b))

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  7. Q11(a) 1 mark

    Also in 31/1/1 (Q5(a))

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    OR
    Q11(b) 1 mark

    Also in 31/1/1 (Q5(b))

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  8. Q12 1 mark

    Also in 31/1/1 (Q6), 31/1/2 (Q9)

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  9. Q13 1 mark

    Also in 31/1/1 (Q13)

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  10. Q14 1 mark

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Questions 15–24 · 3 marks each

  1. Q15 3 marks

    Also in 31/1/1 (Q24), 31/1/2 (Q24)

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  2. Q16 3 marks

    Also in 31/1/1 (Q22), 31/1/2 (Q18)

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  3. Q17 3 marks

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  4. Q18(a) 3 marks

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    OR
    Q18(b) 3 marks

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  5. Q19(a) 3 marks

    Also in 31/1/1 (Q21(a)), 31/1/2 (Q17(a))

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    OR
    Q19(b) 3 marks

    Also in 31/1/1 (Q21(b)), 31/1/2 (Q17(b))

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  6. Q20 3 marks

    Also in 31/1/1 (Q19)

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  7. Q21(a) 3 marks

    Also in 31/1/1 (Q16(a)), 31/1/2 (Q20(a))

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    OR
    Q21(b) 3 marks

    Also in 31/1/1 (Q16(b)), 31/1/2 (Q20(b))

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  8. Q22 3 marks

    Also in 31/1/1 (Q15)

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  9. Q23 3 marks

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  10. Q24 3 marks

    Also in 31/1/1 (Q20), 31/1/2 (Q16)

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Questions 25–30 · 5 marks each

  1. Q25(a) 5 marks

    Also in 31/1/1 (Q29(a)), 31/1/2 (Q27(a))

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    OR
    Q25(b) 5 marks

    Also in 31/1/1 (Q29(b)), 31/1/2 (Q27(b))

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  2. Q26 5 marks

    Also in 31/1/1 (Q28)

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  3. Q27(a) 5 marks

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    Q27(b) 5 marks

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  4. Q28 5 marks

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  5. Q29(a) 5 marks

    Also in 31/1/1 (Q26(a)), 31/1/2 (Q29(a))

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    OR
    Q29(b) 5 marks

    Also in 31/1/1 (Q26(b)), 31/1/2 (Q29(b))

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  6. Q30 5 marks

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