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

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

35 of its 39 questions also appear in 31/3/2 or 31/3/3; 4 are only in this paper.

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Questions 1–2 · 1 mark each

  1. Q1 1 mark

    Also in 31/3/2 (Q2), 31/3/3 (Q3)

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  2. Q2(a) 1 mark

    Also in 31/3/2 (Q1(a)), 31/3/3 (Q4(a))

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    OR
    Q2(b) 1 mark

    Also in 31/3/2 (Q1(b)), 31/3/3 (Q4(b))

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Questions 3–4 · 4 marks each

  1. Q3 4 marks

    Also in 31/3/2 (Q4), 31/3/3 (Q13)

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  2. Q4 4 marks

    Also in 31/3/2 (Q3), 31/3/3 (Q14)

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Questions 5–14 · 1 mark each

  1. Q5 1 mark

    Also in 31/3/2 (Q12), 31/3/3 (Q7)

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  2. Q6 1 mark

    Also in 31/3/2 (Q11), 31/3/3 (Q5)

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  3. Q7 1 mark

    Also in 31/3/2 (Q10), 31/3/3 (Q6)

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  4. Q8(a) 1 mark

    Also in 31/3/2 (Q9(a)), 31/3/3 (Q12(a))

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    OR
    Q8(b) 1 mark

    Also in 31/3/2 (Q9(b)), 31/3/3 (Q12(b))

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  5. Q9 1 mark

    Also in 31/3/2 (Q8), 31/3/3 (Q11)

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  6. Q10 1 mark

    Also in 31/3/2 (Q7), 31/3/3 (Q10)

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  7. Q11 1 mark

    Also in 31/3/2 (Q6), 31/3/3 (Q9)

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  8. Q12(a) 1 mark

    Also in 31/3/2 (Q5(a)), 31/3/3 (Q8(a))

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    OR
    Q12(b) 1 mark

    Also in 31/3/2 (Q5(b)), 31/3/3 (Q8(b))

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  9. Q13 1 mark

    Also in 31/3/2 (Q14), 31/3/3 (Q1)

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  10. Q14 1 mark

    Also in 31/3/2 (Q13), 31/3/3 (Q2)

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Questions 15–24 · 3 marks each

  1. Q15 3 marks

    Also in 31/3/2 (Q16)

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  2. Q16(a) 3 marks

    Also in 31/3/2 (Q15(a)), 31/3/3 (Q17(a))

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    OR
    Q16(b) 3 marks

    Also in 31/3/2 (Q15(b)), 31/3/3 (Q17(b))

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  3. Q17 3 marks

    Also in 31/3/3 (Q16)

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  4. Q18(a) 3 marks

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    OR
    Q18(b) 3 marks

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  5. Q19 3 marks

    Also in 31/3/2 (Q18), 31/3/3 (Q19)

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  6. Q20 3 marks

    Also in 31/3/3 (Q21)

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  7. Q21 3 marks

    Also in 31/3/2 (Q21), 31/3/3 (Q20)

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  8. Q22 3 marks

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  9. Q23 3 marks

    Also in 31/3/2 (Q24), 31/3/3 (Q24)

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  10. Q24(a) 3 marks

    Also in 31/3/2 (Q23(a)), 31/3/3 (Q23(a))

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    OR
    Q24(b) 3 marks

    Also in 31/3/2 (Q23(b)), 31/3/3 (Q23(b))

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Questions 25–30 · 5 marks each

  1. Q25(a) 5 marks

    Also in 31/3/2 (Q25(a))

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    OR
    Q25(b) 5 marks

    Also in 31/3/2 (Q25(b))

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  2. Q26 5 marks

    Also in 31/3/3 (Q25)

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  3. Q27 5 marks

    Also in 31/3/3 (Q27)

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  4. Q28(a) 5 marks

    Also in 31/3/2 (Q28(a))

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    OR
    Q28(b) 5 marks

    Also in 31/3/2 (Q28(b))

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  5. Q29 5 marks

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  6. Q30(a) 5 marks

    Also in 31/3/2 (Q30(a)), 31/3/3 (Q29(a))

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    OR
    Q30(b) 5 marks

    Also in 31/3/2 (Q30(b)), 31/3/3 (Q29(b))

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