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Q. Important applications of indium?
The most important applications of indium are in protection of bearings against wear and erosion in low melting alloys and in electronic devices. Thallous salts being toxic are used as fungicides germicides and in ointments used for the treatment of ring worms. Thallium compounds find applications in preparing optical glass on account of their high refractive power.
If hydrogen atom is in an energy level represented by n=4,how many spectral lines are possible in its emission spectrum? Ans) There is a formula for this i.e [ (n 2- n 1 +1)
Q. What is chlorophyll? A magnesium complex of porphyrin is called chlotophyll. the green colouring material in plants and which is essential for photosynthesis. Hemoglobin
The nitride ion in lithium nitride is composed of: (1) 7 protons + 10 electrons (2) 10 protons + 10 electrons (3) 7 protons + 7 protons (4) 10 protons + 7 electr
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How are standard solutions and titrations prepared in industry?
how to make phosphate buffer of .05 M
Q. Extraction of Iron oxide and titanium dioxide? Iron oxide and titanium dioxide do not dissolve in the alkali and are filtered off as sludge. The solution is cooled and most
Q. Explain the structure of Alkenes? Ans. Alkenes have the general formula C n H 2n . Therefore, for every n carbon atoms, there are 2n hydrogen atoms. Alkenes have C =
Q. Illustrate modern atomic model of De Broglie? 1. Electrons inhabit the space surrounding the nucleus and can exist in several discrete principal energy levels each designate
Q. Determine the taste threshold for different sensations? • perceive the individual differences existing for taste stimulation, and • identify your own threshold and iden
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