| A student prepared 20% sodium hydroxide solution in a beaker to study saponification reaction. Some observations related to this are given below: |
| (I) Sodium hydroxide solution turns red litmus blue |
| (II) Sodium hydroxide readily dissolves in water |
| (III) The beaker containing solution appears cold when touched from outside. |
| (IV) The blue litmus paper turns red when dipped into the solution |
| The correct observations are: |
| (a) I, II and IV (b) I, II, and III |
| (c) only III and IV (d) only I and II |
Answer:
(b) I, II, and III
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