Two test tubes contain two colourless liquids ethanol and ethanoic acid. Explain by writing reaction which chemical test you would perform to tell which substance is present in which test tube.

Explain by writing a reaction, which product will be formed on heating n-butly alcohol with concentrated sulphuric acid.

Study the diagram and answer the following questions: Which acid is present in the big test tube?

Use your brain power! Can you tell : Explain by writing a reaction , which product will be formed on heating n-butyl alcohol with concentrated sulphuric acid.

Despite of various diagnostic test, a couple could not have a child. In this situtation, which remedies will you suggest ?

The sodium fusion extract of an organic compound is boiled with concentrated nitric acid , following by treatment with silver nitrate A white precipitate is obtained which is soluble in ammonium hy droxide . This test confirms the presence of _____.

Apparatus : Test tube, beakers, burner, etc. Chemicals : Glacial ethanoic acid, ethanol, concentrated sulphuric acid, etc. Procedure : Take 1 mL ethanol and 1 mL glacial ethanoic acid in a test tube. Add a few drops of concentrated sulphuric acid in it. Keeps this test tube in the beaker containing hot water (hot water bath) for five minutes. Then take 20-30 mL water in another beaker, and pour the above reaction mixture in it and smell it. What can you say about the smell of the reaction mixture?

A student takes about 2 mL ethanoic acid in a dry test tube and adds a pinch of sodium carbonate to it. What will he observe ?

Apparatus: Test tube, conical flask, balance, etc. Chemicals: Sodium chloride and silver nitrate. Procedure: i. Take sodium chloride solution in a conical flask and silver nitrate solution in a test tube. ii. Tie a thread to the test tube and insert it carefully into the conical flask. Make the conical flask air tight by fitting a rubber cork. iii. Weigh the conical flask with the help of a balance. iv. Now tilt the conical flask and mix the solution present in the test tube with the solution in the conical flask. v. Weigh the conical flask again. Did any insoluble substance form?

In an electric circuit ,a battery and a bulb have been connected and the battery consists of two cells of equal potential difference. If the bulb is not glowing ,then which tests will you perform in order to find out the reason for the bulb not glowing?

Attempts at various levels are performed for conserving environment. Which role would you like to perform. Give two actions each : Prevention