question_answer

  On dissolving chalk powder in water, a suspension is obtained. Give any four reasons to support the fact that mixture so obtained is a suspension only.

Answer:

                  It is supported by the following reasons. (i) White particles of chalk powder can be seen with naked eye.                                    (1/2) (ii) The particles can be separated by ordinary filter paper.                                                    (1/2) (iii) Upon shaking a white turbidity reappears in solutions.                                                  (1/2) (iv) Light cannot pass through the suspension which show that it is of opaque nature.   (1/2)