(๐) The liquid is nail paint remover which contains acetone.
(๐๐) Acetone in nail paint remover is a volatile compound. It evaporates at a high rate and absorbs heat from her hand. So, she felt cold.
(๐๐๐) Knowledgeable, educated.
Question
One day, Reena was helping her mother in household work. Suddenly a bottle from her mother’s cosmetics broke and the liquid fell on her hand. She got worried and asked her mother why she felt cold. Her mother explained the reason to her which satisfied her. Answer the following questions based on above passage. (๐) Can you guess the liquid that felt on Reena’s hand? (๐๐) Why did she feel cold when liquid fall on her hand? (๐๐๐) What are the values shown by Reena’s mother?
WhatsApp
๐ก Some Related Questions
The temperature-time graph given alongside shows the heating curve for pure wax. From the graph answer the following: (a) What is the physical state of the substance at the point A, B, C and D? (b) What is the melting point of the substance? (c) What is the boiling point? (d) Which portions of the graph indicates that change to state is taking place? (e) Name the terms used for heat absorbed during change of states involved in above process.
Open Answer ยป 
You are given the following substances with their melting and bowling points. Identify the physical status of X, Y and Z at room temperature (30ยฐC).
| Substance | Melting point(ยฐC) | Boiling point(ยฐC) |
| X | -219 | -183 |
| Y | 119 | 445 |
| Z | -15 | 78 |
Comment on the following statements Evaporation causes cooling. (b) Rate of evaporation of an aqueous solution decreases with increase in humidity. (c) Sponge though compressible is a solid. (d) Ice is solid at 0ยฐC, while water is liquid at room temperature. (e) Sugar crystals dissolve faster in hot water than cold water.
Open Answer ยป