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Post-harvest treatments
Certain post-harvest treatments to fruits and vegetables can bring down spoilage significantly. A wide range of chemicals used to control post-harvest diseases include chlorine, sulphur dioxide, dichloran etc. Extension of storage life of fresh produce could be obtained by treatment with skin coatings like wax coating of fresh fruits and vegetables. Treatment of fruits with ethylene or ethylene-releasing chemicals such as ethrel or calcium carbide helps in the induction of early and uniform ripening.
What is happen whenever H2SO4+HNO3 adding to the phenol.give the reaction Ans) Phenol + HNO3(in prescence of sulphuric acid) --> 2-nitrophenol + 4-nitrophenol.
Distilled water A kettle can be used to give boiling water, which is then condensed in a jam jar fitted with a big cork and immersed in a pan of cold water. Rubber tubing, adhe
54) Note: This problem is worth double credit.It is desired to concentrate a caustic soda solution from 12.5 to 40.0% in a double-effect evaporator. Feed solution at a flow rate of
The atomic orbitals are progressively filled in order of increasing energy. This principle is called as: (1) Hund's rule (2)Aufbau principle (3) Exclusion principle (4
Where is tin obtained? Ans) Tin is obtained in several places tin is found mainly in the ore cassiterite, which is originate in Malaysia, Bolivia, Thailand, and Nigeria.
Write the similarities of lithium with other alkali metals
write a note on the oxide of 3d transition metal
How do we solve numerical problems in double titration
Q. Explain the types of Isomers? Ans. Three types of isomers are chain isomers, position isomers, and functional group isomers: Chain isomers are isomers which differ in
Formation of esters (Esterification) (1) The reaction is shifted to the right via using excess of alcohol or removal of water by distillation. (2) The re
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