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  • Question 1
    1 / -0

    Which of the following statements are true when milk changes into curd?

    (i) Its state is changed from liquid to semi-solid.
    (ii) It changes colour.
    (iii) It changes taste.
    (iv) The change cannot be reversed.

  • Question 2
    1 / -0

    Analyse the two statements given below and select the correct option.

    Statement I: 2CO + O2 → 2CO2 represents a balanced chemical equation.

    Statement II: The number of atoms of each type on both the sides of the equation is equal.

  • Question 3
    1 / -0

    Rolling of chapati and baking of chapati are the changes that

  • Question 4
    1 / -0

    A chemical change may involve

  • Question 5
    1 / -0

    Paheli's mother made a concentrated sugar syrup by dissolving sugar in hot water. On cooling, crystals of sugar got separated.

    This indicates a

  • Question 6
    1 / -0

    Which of the following reactions correctly represents the balanced equation for the combustion of magnesium?

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