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Starch and its derivatives
Starch is a white amorphous substance along with no taste or smell. While heated to a temperature among 200-250oC it changes into dextrin. At larger temperature charring happens. While boiled and dilute acid, starch finally yields glucose.
Both of the n and n1 are unknown, but n is believed to be greater as compared to n1.
While reacted with enzyme, diastase, it gives maltose.
Polyglycolic acid (PGA) : It is acquired by the chain polymerisation of cyclic dimer of glycolic acid, OH-CH2-COOH.
Dessicants(drying agents) can often be regenerated by heating. A dessicant that is commonly regenerated is CaSO 4 .2H 2 O:
the periodic table
Saytzeff rule
Definitions A Br ø nsted base a proton acceptor, and Br ø nsted acid is a proton donor. In this definition an acid-base reaction accepts protolysis:
describe the steps necessary in preparing a standard solution of 1.0 molar NaOH
The p-block elements contain metals amd what?
5
perkin ring closure reaction of melonic ester with C2H5O-Na+
polymers based upon availabilty
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