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Q. Uses of selenium?
Uses of selenium include photocopying process of xerography, decobrisation of glasses and as a catalytic agent particularly in the isomerisation of certain petroleum products. Selenium dioxide is used as an oxidising agent in organic reactions.
The base "G" in DNA is guanine. a 15 ug sample of guanine in excess oxygen resulting in 21.84 ug of CO2, 4.47 ug of H2O, and 22.83 ug of NO2. How many grams of carbon does 15 ug
How does crystallography help in study of crystal structure
why is the f-block grouped in the way it is
what are the practical applications of photochemistry
Properties of ethyl alcohol Physical properties It is a colorless liquid with a characteristic alcoholic smell. Its boiling point is 351K It is neutral towards litmus
If change in energy (ΔE) = 3x 10 -8 j, h= 6.64x 10 -34 j-s and c= 3x 10 8 m/s then wavelength of the light is: (1) 6.36x 10 3 Å (2) 6.36x 10 5 Å
Define Interfacial potential differences? What is the source of an open-circuit, zero-current cell potential? When no electric current passes through the cell, the electric pot
Explain the process of Grading and Sieving Grading: Grading consists of separating the sound kernels from chaff and impurities,and may be achieved by sieving or winnowing.
For a hydrogen atom, calculate the wavelength (in nm) of an emitted photon in the Lyman series that results from the transition n = 3 to n = 1
Fine grain sizes are obtained by slow cooling
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