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Define Regents for Estimation of Vitamin C - Colorimetric Method?
1. 2, 4 dinitrophenylhydrazine reagent - Dissolve 2 g of dinitrophenyl hydrazine in 100 ml of 9N sulphuric acid and allow to stand overnight. Mix and use.
2. 5% thiourea solution - Dissolve 25 g of thiourea in 500 ml of distilled water.
3. 9N sulphuric acid
4. 85% sulphuric acid
5. 0.6% copper sulphate
6. Colour reagent or Dinitrophenylhydrazine - thiourea - copper sulphate (DTC) reagent - Mix
7. 5% trichloroacetic acid (TCA)
8. 5% metaphosphoric acid in 10% acetic acid solution - Mix 1000 ml of 5% metaphosphoric acid and 500 ml of 10% acetic acid.
9. Ice for cooling.
What are the different patterns of cleavage (segmentation of fertilized egg cell)?
What is the formula for photosynthesis? H 2 O + 6CO 2 + Light Energy ----> C 6 H 12 O6+ 6O 2 6 molecules of water + 6 molecules of carbon dioxide --->1 molecule of glucose
What is condition for the Mendel's second law to be valid? The Mendel's second law is only valid for genes located in various chromosomes. For genes situated in the similar chr
Q. Do the -R groups bound to the central carbons participate in the union between amino acids? The peptide bond attaches the nitrogen of the amine group of one amino acid to th
Q. What are the organs that are part of the female reproductive system? The organs that constitute the female reproductive system are the ovaries, the uterus, the Fallopian tub
what happens in meiosis in prophase 1?
Radiation Pollution It is unfortunate that harmful radiations cause severe pollution but they cannot be seen or observed by eyes and are difficult to judge, unless present in
What do we mean by the term isomer? Existence of different compounds having same molecular form but dtfferent structural forms are isomers. Monosaccharides exhibit a varie
Ask ques different tipe tissue and ideas minimum 100 words accepted#
Define about the nutritional deficiencies? The nutritional deficiencies which have been identified in the group of elderly are of total calories, protein, vitamin A, vitamin C,
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