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Lifting the water surface
Bend the pointed end of a pin or use a piece of fine wire to make a hook. File the point of the hook unless it is very sharp. Put your eye on a level with the surface of the water in a drinking glass. Put the hook under the surface of the water and gently increase the point to the surface. If you are cautious the point will not penetrate the surface film but will lift it slightly upwards.
Explain the Function of Nose You would agree that one of the most prominent features of the face is the nose. The nose is the first of the respiratory organs through which we r
A compressed air pop-gun Use a straight piece of glass or plastic tubing of 1 or 2 cm in diameter and 15 or 20 cm in length. Make a piston by twisting some string on a pencil t
Soil Texture and Methods of Analysis Soil texture is the basic property of a soil related to the size of individual mineral particles, which cannot be easily altered. It spe
Keep the Concentrations of Ions Constant Keep the concentrations of various ions and other important substances constant. A number of chemicals are important to the blood chemi
Water pressure changes with depth Use the funnel and manometer which you made in the last experiment. Fill a tall glass jar or pail with water. Calculate the pressure just belo
What is the job of chromatin in an animal cell?
Explain the Process of Hearing The ears, as we all know, are sense organs for hearing. The ear consists of an external ear, a middle ear and an internal ear. It houses receptor
Food Chain: As you know from the discussion of the previous subsection, one of the ways in which the organisms are related is through food, that is, one organism becomes food
Personal Protective Devices : We shall now discuss the details of protective devices required for safety in a laboratory. The aim of protective devices is to minimise the risk of
Explain the Water balance function of the kidney Water is one of the most important constituent in the daily diet. You are already aware of the roles it plays in our body. Main
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