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Q. Use of Aldehydes as chemical sterilant?
Formaldehyde: widely employed for the fumigation of operation theatres.
Glutaraldehyde: commercial preparations are active at different pH and have percentage of 2-3.2. They can destroy microbes in 10 hours. They have a surprising resistance to activation by organic matter and do not harm rubber and plastic hence are indicated for impression materials. However they may corrode or discolour metal.
Beta Propiolactone: this is a condensation product of ketone and formaldehyde with a boiling point of 163oC. 0.2 % BPL is used for sterilization. It is more efficient than formaldehyde for fumigation but is carcinogenic. It is also used for sterilizing vaccines, graft tissue and other delicate biological materials.
Which parts of the eye refract ('bend') the light in such a way as to form an image on the retina? The curved surface of the cornea, and the aqueous humour enclosed by it,
Give one example in each case of the usefulness of bacteria in (a) a natural environment, (b) an industrial process. (a) In a natural environment bacteria brin
Air pollutants - Effects on plants Particulate matter such as cement, coal, petro coke, dust, and fly-ash screen the light and thus change its quantity and quality. Dust plug
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What is pasteurization of fruit juice?
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There are three methods of collections: 1. Kerbside collection: In this collection system the refuse is brought in containers and placed on the footway, from where it is
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