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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.
Explain the Functions of Gastric Juice - Antiseptic Action Antiseptic action: Hydrochloric acid in the gastric juice acts as a barrier to the passage of certain microorganisms
what is earth made of ?
Why are peaty and marshy soils highly acidic? The acidity is due to decomposition of organic matter under anaerobic conditions and formation of sulphuric acid.
Define the Regulation of Glucocorticoid Secretion Glucocorticoid secretion is mainly controlled by ACTH or adrenocorticotropic hormone from the anterior pituitary gland. In any
Explain the Hypoxic Hypoxia It is a hypoxia resulting from defective oxygenation of the blood in the lungs. It is a problem in high altitudes where pO 2 of the arterial blood
Important physico-chemical properties of niacin and niacinamide are as follows: a) Niacin is a white crystalline solid. b) While niacin is sparingly soluble in water, etha
what are the measurable causes of weather and how does weather impact our world?
Laboratory Safety Codes: BIS has prepared the following three codes (in the form of small books) regarding laboratory safety: i) Code of safety in microbiological laboratories
what animal is in platyhelminthes
What determines sinking and floating? Shape a piece of lead, tin or aluminium foil into the form of a little boat and float it on the water in a pan; now wad the metal foil fro
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