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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.
Combustion of fossil fuels and wood in industries, automobiles, aircrafts, railways, thermal plant kitchens etc., agricultural operations and industrial processing are major source
A 15 mM solution of potassium chloride is needed for and experiment. The only liquid stock that is a available is a 1 M solution. Calculate how much of the stock solution is needed
Theor y of Epigenesis (i) It was proposed by C.F. Wolff & supported by Von Baer. (ii) Wolff proposed that germ cells contain definite but undifferentiated
Temperature and Concentration of Nutrients Temperature Temperature like salinity remains almost constant in the oceans in contrast to the land or terrestrial ecosystems
Storage Excretion Many insects exhibit a phenomenon known as storage excretion. If excretory products are stored in the body instead of being eliminated, no water is expended
In agriculture areas, farmer pay close attention to d weather forecast. Right before a predicted overnight freeze, farmers spray water on crops to protect the plants. Use the prope
Describe the appearance of a single E. coli colony. Why can it be considered genetically homogenous?
how can i get an demo assignment to solve?
Describe the factors that affect cardiac output in a female athlete who is speed skating toward the finish line in an Olympic race.
Q. Concerning the presence of the nucleus what is the difference between bacterial and animal cells? Animal cells (cells of living beings of the kingdom Animalia) have an inte
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