Bhavna is a student of class IX in a city school. She has a five year old younger brother Bunty who is very naughty. Bhavna's mother, Mrs. Malikm had purchased a big bottle of nail poslish remover from the market about six months back. She had used less than half of this bottle so far. One day Mrs. Malik left this bottle on the dining table by mistake and went out of the house for some work. In her absence, Bunty opened the half empty bottle of nail polish remover and filled it by adding water in it. When Mrs. Malik came back, she was very angry with Bunty and scolded him for spoiling her expensive bottle of nail polish remover. Mrs. Malik was about to throw away his bottle containing nail polish remover mixed with water when her daughter Bhavna came back from school. She told her problem to Bhavna. Bhavna throught over this problem for a while and said that there was no need to throw away the mixture of nail polish remover and water She told her mother that she could recover pure nail polish remover from this mixture. Next day, Bhavna took the bottle containing this mixture to her school laboratory. With the permission of her teacher, Bhavna set up an apparatus which included a particular type of flask fitted will a tall column. She put the mixture of nail polish remover and water in the flask and heated it gradually. On heating nail polish remover was turned into vapour, which were cooled by a water condenser to obtain pure nail polish remover. Water was left behind in the flask. Mrs. Malik was very happy to get back her nail polish remover.
(a) What is nail polish remover ?
(b) State whether nail polish remover and water are miscible liquids or immiscible liquids
(c) Name the process used by Bhavna for the complete separation of mixture of nail polish remover and water. Also define this process.
(d) On what factors does the separation of nail polish remover and water mixture of nail polish remover and water. Also define this process
(d) On water factors does the separation of nail polish remover and water mixture by the above process depend ?
(e) Name the tall column used in the flask during the separation of a mixture of nail polish remover and water
(f) What values are displayed by Bhavna in this episode ?

Explanation

(a) Nail polish remover is an organic liquid called 'acetone' It is a very good solvent
(b) Nail polish remover (acetone) and water are completely miscible liquids
(c) (i) The complete separation of a mixture of nail polish remover (acetone) and water was done by Bhavna by using the process of fractional distillation
(ii) Fractional distillation is the process of separating two (or more) miscible liquids by distillation (by using a fractionating column), the distillate being collected in fractions bolining at different temperatures.
(d) The separation of nail polish remover (acetone) and water depends on the difference in their boiling points (The boling point of acetone is `56^(@)C` whereas that of water is `100^(@)C`)
(e) Fractionating column
(f) The various values displayed by Bhavna in this episode are (i) Knowledge of separation of a mixture of two miscible liquids (ii) Application in solving real-life problems, and (iii) Desire to help her mother (by preventing wastage of expensive nail polish remover).