school reform demonstration

Production of aromatic hydrocarbons (arenes) like benzene, toluene and xylenes. Earlier the bulk of arenes were obtained from coal tar, but now they are derived from petroleum by the process of reforming. Increasing the octane number of straight-run gasoline by increasing the proport..

A thistle funnel, covered at the broad end by a differentially permeable membrane, contains a 10% sugar solution. The beaker contains a 5% sugar solution as shown in fig. a. The solute is unable to pass through the membrane, but the water passes freely through in both directions. The net movement ..

Set up the experiment as shown in the figur..

To Demonstrate Aerobic Respiration The apparatus shown is called the respiroscope that is used to demonstrate respiration. Few germinating seeds are taken in the bulb of the respirometer. The tube is inserted into a beaker containing mercury. A pellet of KOH is introduced in..

Take a bell jar. Towards its rounded end, fix a 'Y' shaped glass tube and on the open ends of the two branches tie a balloon each. On its open end tie a thin rubber sheet. The cavity of the bell jar acts as the thoracic cavity, the "Y" shaped tube as the trachea that branches into bronchi and the ..

Kuhne's Tube(Glucose Solution + Yeast) The above apparatus is called the Kuhne's fermentation vessel. It is filled with 10% glucose solution along with yeast. The vertical tube is filled completely and the bulb is half-filled. After sometime, the level in the bulb goes up and the level in the t..

Fill a test tube with mercury and invent it over a petridish containing mercury. Introduce some germinating seeds into the test tube. The seeds will immediately rise to top. Leave the set up for about a day. It is noted that the mercury level in the tube falls and the space above the mercury is fil..

Put some germinating seeds in a conical flask. With the help of a thread suspend a small tube containing KOH in the flask. Through the hole of the cork pass a glass tube bent twice at right angles. One end of the tube is in the flask while the other end is in the beaker filled with water. Make the ..

Interference of sound waves can be demonstrated using Quincke's tube. It consists of two U-tubes ABCDE and FGH, whose limbs can be inserted telescopically into each othe..