Esters are sweet-smelling substances and are used in making perfumes. Suggest some activity and the reaction involved for the preparation of an ester with well labelled diagram.

(a) Esters are sweet smelling substances and are used in making perfumes. Describe an activity for the preparation of an ester with the help of a well labelled diagram. Write an equation for the chemical reaction involved in the formation of the ester . Also write the names of all the substances involved in the process of esterification. (b) State any two uses of esters.

What are esters? Explain the preparation of ethyl ethanoate with the help of neat labelled diagram.

The reaction which is used to prepare beta -hydroxy esters is called

(a) Write the names of the monomers of polymer used for making unbreakable crockery. (b) Write the reaction involved in the preparation of neoprene (c) Arrange the following polymers in decreasing order of intermolecular forces : PVC, Nylon 66, Natural rubber.

You are provided with a mixture of naphthalene and ammonium chloride by your teacher. Suggest an activity to separate them with well labelled diagram

Mr. Kumar runs a small garment making factory in a premises having a roof made of asbestos sheets. These asbestos sheets are supported on long wooden planks are fixed to planks with J-shaped hooks. For the last many days, the workers of factory are complainig to Mr. Kumar that the new clother made by them and kept on hangers are getting spoiled with a red brown powdery substace. Mr. Kumar tried his best but could not locate the surface of this substance which was spoiling theri newly fabricated clothes. One day Mr. Kumar's son Rajesh who is a studen of class X , came to the factory. Mr. Kumar told him the problem which he was facing for the last so many days. Rajesh went near the clothes which had been spoiled, looked up at the roof carefully from that place and understood the problem. He explained everything to his father. He also suggested the measure to be taken to solve this problem. Mr. Kumar was very happy. (a) What is the red -brown powdery substance known as? (b) From where do you think this substance was coming on the newly made garments in the factory? (c) What type of chemical reaction is involved in the formation of red -brown substance? (d) What is the general name of the process in which metals are eaten up by air or moisture, etc? (e) What is the special name of the above process if the metal involved is iron? (f) What suggestion do you think was given by Rajesh to solve this problem? (g) What values are displayed by Rajesh in this episode?