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CBSE Class 10 Science 2018 — Paper 31/1

80 marks · 3 hours · 27 questions (33 with the OR choices)

All 33 of its questions also appear in 31/2 or 31/3.

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Questions 1–2 · 1 mark each

  1. Q1 1 mark

    Also in 31/2 (Q2), 31/3 (Q1)

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  2. Q2 1 mark

    Also in 31/2 (Q1), 31/3 (Q2)

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Questions 3–5 · 2 marks each

  1. Q3 2 marks

    Also in 31/2 (Q5), 31/3 (Q4)

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  2. Q4 2 marks

    Also in 31/2 (Q3), 31/3 (Q5)

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  3. Q5 2 marks

    Also in 31/2 (Q4), 31/3 (Q3)

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Questions 6–15 · 3 marks each

  1. Q6 3 marks

    Also in 31/2 (Q12), 31/3 (Q15)

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  2. Q7(a) 3 marks

    Also in 31/2 (Q10(a)), 31/3 (Q14(a))

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    OR
    Q7(b) 3 marks

    Also in 31/2 (Q10(b)), 31/3 (Q14(b))

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  3. Q8 3 marks

    Also in 31/2 (Q11), 31/3 (Q13)

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  4. Q9 3 marks

    Also in 31/2 (Q9), 31/3 (Q8)

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  5. Q10 3 marks

    Also in 31/2 (Q7), 31/3 (Q9)

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  6. Q11(a) 3 marks

    Also in 31/2 (Q6(a)), 31/3 (Q7(a))

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    OR
    Q11(b) 3 marks

    Also in 31/2 (Q6(b)), 31/3 (Q7(b))

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  7. Q12(a) 3 marks

    Also in 31/2 (Q8(a)), 31/3 (Q6(a))

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    OR
    Q12(b) 3 marks

    Also in 31/2 (Q8(b)), 31/3 (Q6(b))

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  8. Q13 3 marks

    Also in 31/2 (Q15), 31/3 (Q10)

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  9. Q14 3 marks

    Also in 31/2 (Q14), 31/3 (Q12)

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  10. Q15 3 marks

    Also in 31/2 (Q13), 31/3 (Q11)

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Questions 16–21 · 5 marks each

  1. Q16 5 marks

    Also in 31/2 (Q18), 31/3 (Q20)

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  2. Q17 5 marks

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

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  3. Q18(a) 5 marks

    Also in 31/2 (Q19(a)), 31/3 (Q17(a))

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    OR
    Q18(b) 5 marks

    Also in 31/2 (Q19(b)), 31/3 (Q17(b))

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  4. Q19 5 marks

    Also in 31/2 (Q17), 31/3 (Q18)

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  5. Q20(a) 5 marks

    Also in 31/2 (Q21(a)), 31/3 (Q16(a))

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    OR
    Q20(b) 5 marks

    Also in 31/2 (Q21(b)), 31/3 (Q16(b))

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  6. Q21 5 marks

    Also in 31/2 (Q16), 31/3 (Q19)

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Questions 22–27 · 2 marks each

  1. Q22 2 marks

    Also in 31/2 (Q24), 31/3 (Q27)

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  2. Q23 2 marks

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

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  3. Q24 2 marks

    Also in 31/2 (Q27), 31/3 (Q22)

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  4. Q25(a) 2 marks

    Also in 31/2 (Q22(a)), 31/3 (Q26(a))

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    OR
    Q25(b) 2 marks

    Also in 31/2 (Q22(b)), 31/3 (Q26(b))

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  5. Q26 2 marks

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

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  6. Q27 2 marks

    Also in 31/2 (Q26), 31/3 (Q24)

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Other 2018 papers

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