Fill in the cross word given as Figure 5.2 with the help of the clues provided .

ACROSS
(2) The solution which does not change the colour of either red or blue litmus .
(4) Phenolphthalein gives pink colour in this type of solution .
(7) Colour of blue litmus in lemon juice .
DOWN (1) It is used to test whether a substance is acidic or basic .
(3) It is a natural indicator and gives pink colour in basic solution .
(5) Nature of ant's sting .
(6) It is responsible for increase in temperature during a neutralisation reaction.

Explanation

1) Indicator
2) Neutral
3) Turmeric
4) Base
5) Acidic
6) Heat
7) Red