8th Class Science Combustion and Flame Question Bank Combustion and Flame

  • question_answer 13) I Match the entries in Column-l with those in Column-ll correctly.
    Column - I Column - II
    (a) Dark inner zone (i) Hottest part (No carbon)
    (b) Blue zone (ii) Partial combustion
    (c) Luminous zone (iii) Unburnt vapours of wax
    (d) Non-luminous zone (iv) Complete combustion

    A)  a-1, b-2, c-3, d-4

    B)                         a-2, b-3, c-4, d-1

    C)                         a-3, b-4, c-2, d-1

    D)                         a-4, b-1, c-2, d-3

    Correct Answer: C

    Solution :

    The correct combination is a - 3, b - 4, c - 2, d - 1 (i) Dark inner zone -Unburnt vapours of wax (ii) Blue zone - Complete combustion (iii) Luminous zone ? Partial combustion (iv) Non-luminous zone - Hottest part (no carbon)

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