question_answer

One day, when Heena was playing with her mother's cosmetics, she felt cold, when a liquid bottle break and some liquid fall on her hand. She got worried. She wash suddenly her hand and ask her mother why she felt cold. Her mother gave her scientific explanation which satisfied her. Read the above passage and answer the following questions. (i) Can you guess what was that liquid? (ii) Why Heena felt cool when liquid fall on her hand? (iii) What values are shown by Heena's mother?

Answer:

                                                                           (i) The liquid is nail paint remover which contains an ether or acetone.                        (ii) Ether evaporates by taking heat energy from the hand (body). That's why she felt cool.                                                                   (iii) Heena's mother is a knowledgeable, careful and educated mother.