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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.
what is the economic importance of phylum coelenterata
Objectives After studying this unit you should be able to: 1. explain the significance of the fire triangle, 2. list common causes of fire, 3. describe the purpose
Explosives : These include the commercial explosives, preparations and substances used as blasting agents, ammunition, fireworks etc. Some examples are, gun powder, chlorate mixtu
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factors affecting nitrogen balance
Aquestion #Minimum 100 words accepted#
Define the Lymphocytes They are agranulocytes. The nucleus occupies approximately the entire cell. They vary in size from 6- 18 mm diameter; sometimes divide in small and large
Define Colorimetric Method for the Estimation of Phosphorous Estimation of phosphorous is based upon the principle of colorimetry. Many methods for quantitative analysis are ba
#qDescribe the factors which decide the broad area of Scientific activityuestion..
Question : a) Define i) relative humidity. b) Why is it generally cloudy in the vicinity of a low pressure area and sunny in the vicinity of high pressure? c) What are th
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