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Ordinary osmosis cannot be used to purify water. If the applied pressure exceeds osmotic pressure then water starts moving from solution side to pure solvent side. This is reverse osmosis, by which pure water is squeezed out of impure water.
Advantage: this process removes lead, calcium, magnesium, sodium, chloride, nitrate, sulphate, etc.
Disadvantages: it requires large volume of water. It may take as much as 90 gallons of water to recover 5 gallons of usable water.
#question.sir please explain amoeba as in example of protozoa
The kind of epithelium which forms the inner walls of blood vessels is : 1. cuboidal epithelium 2. columnar epithelium 3. ciliated columnar epithelium 4. squamous epith
write breif notes on oogenesis
What is the greenhouse effect? The greenhouse effect is a phenomenon in which atmospheric gases like CO 2 trap reradiated heat from the Earth, much as the glass panes of a gre
Preparation on the Morning of Surgery Morning care Hygiene Bowel and bladder emptying. Oral hygiene, remove dentures if any, no lipstick. Comb and make th
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How is the concept of chromosome related to the concept of the gene? A chromosome is a DNA molecule. A chromosome may have several dissimilar genes and also DNA portions tha
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