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Questions related from N. Venkatathri
Normally absorption or emission of ultraviolet visible light occur in the same region. If bathochromic or hypsochromic shift occurs it should go to other regions. Normally we are not observing...
07 December 2014 4,408 2 View
Normally polymers are inert. But some of the polymers are known to be conductive. How are they prepared? Are they metal topped polymers?
25 September 2014 606 10 View
It is known that aluminium and iron can be removed by treating the solution with alum or Ferric chloride. In same way chromium is a pollutant from tanneries. Is it possible to remove it through...
05 August 2014 6,354 4 View
In Absorption UV-Visible spectroscopy, the absorption is proportional to concentration according to Beer Lambert's law. However, this is not followed in higher and low concentration of a...
04 August 2014 365 51 View
Zeolites are strongly acidic compared to silico aluminophosphates. I like to know the reason.
01 August 2014 5,649 3 View
To find out a particular solid is photocatalytic or not, the above energy band gap is useful.
29 July 2014 205 8 View
In case of precipitated silica formed through sol-gel method, are mostly spherical. The reason is not clear.
20 July 2014 1,995 5 View
Normally we also use to estimate the pore width from XRD first peak position. If it is so, in some layered materials and thermally unstable materials are having peak at lower two theta. How do...
15 June 2014 1,674 5 View
Transmission electron micrograph can visualize the particle up to nano scale. If there is particle size lesser than that, how can we identify it? I think one way is to increase the power of...
19 May 2014 1,209 7 View
It is known that sunlight has all the visible lights and cosmic rays (probably gamma rays), but what about the other wavelengths? If they are available, can one filter it and use it for spectroscopy?
15 May 2014 660 7 View
