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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.
Define Counter Stain - Staining Technique? Finally, the smear is counter stained with a simple basic dye different in colour from crystal violet. Safranin is the most commonly
Evolutionary relationship among various animal groups is depicted in the cladogram given below. P, Q and R respectively shown: a. Vertebrae, hair and four limbs. b. B
Explain the Properties of hydrolysed soy proteins Partially hydrolysed soy proteins possess good foam stabilization properties and can be used as whipping agents in combination
What are five fin fish found in the North-East United States?
A biologist examines a series of cells and counts 140 cells in interphase, 10 cells in metaphase, 4 cells in anaphase and 7 cells in telophase. if complete cell cycle requires 24 h
Involution - Internalization of Mesoderm As by now mentioned, in the frog Xenopus (and probably in other amphibian species as well) the cells of presumptive mesoderm are in t
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Define the Sleep disorder - Effect of Obesity? One of the common problems that obese males and females suffer from is sleep disorder, commonly known as sleep apnoea. Obesity ca
Submerged Stage - Hydrarch This habitat which is now shallower and is richer in nutrients and where light is available up to a certain depth, becomes suitable for the growth o
Q. What is Gestational Diabetes? When a pregnant woman develops diabetes, it is known as gestational diabetes. It occurs in only 1% of the pregnant women. Pregnant women who ha
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