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The difference between hard and soft water
Collect some hard water from a stream(or make some as defined in the next experiment). Also secure some soft water like as rain water or distilled water. Make some soap solution by dissolving soap shavings or powdered soap in a little warm water. Place equivalent amounts of hard and soft water in every of two bottles. Add soap solution to the soft water with a dropper, some drops at a time. Shake the bottle well after every addition. Count the number of drops of soap solution required to produce suds about 1 cm thick on the top.
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
lable the direction of increasing frequency and the direction of increasing wavelength on the em.
Define Principle Colorimetric Method for the Estimation of Phosphorous? The proteins in the blood are precipitated with the help of trichloroacetic acid. The protein free filtr
Cellulose:- It is the main constituent of plant cell walls and the most common and abundant of the D-glucose polymers. This does not occur in the animal body. It is a homopoly
Fission, and fusion energy: 'The Italian navigator has arrived in the new world' This coded message announced the beginning of the atoyic age on 2nd December? 1942. The 'n
Simple hydraulic press The principle of the hydraulic press is illustrated by the following model. Half fill a cylindrical jar with water. Pour melted paraffin wax on the su
Oxidising Substances : It includes oxidising substances and the organic peroxides. Oxidising substances are by themselves not combustible but by feeding oxygen to other substances
how can i do this project?
What is happening to the length of a day on the Earth, as a result of the gravitational pull of the Moon?
discuss the special conflict that erikson believed marked young adulthood. Then describe how an individual could best resolve this conflict
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