Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Comments on the paper: Synthesis growth and characterization of copper
  mercury thiocyanate crystal [Indian J Pure & App Phys 49 (2011) 340-343]   The unit cell parameters, infrared and UV-Vis spectral data reported in the
paper by Vijayabhaskaran et al (Indian J Pure & App Phys 49 (2011) 340-343)
cannot belong to the colourless crystalline compound formulated as copper
mercury thiocyanate CuHg(SCN)4 as claimed by the authors.

24
The categories of this paper are: dg-ga
6
The categories of this paper are: astro-ph
18
The categories of this paper are: econ
27
The categories of this paper are: comp-gas
1
The categories of this paper are: cs
2
The categories of this paper are: math
35
The categories of this paper are: mtrl-th
19
The categories of this paper are: eess
25
The categories of this paper are: patt-sol
33
The categories of this paper are: plasm-ph
14
The categories of this paper are: math-ph
26
The categories of this paper are: bayes-an
29
The categories of this paper are: funct-an
3
The categories of this paper are: physics
22
The categories of this paper are: chao-dyn
31
The categories of this paper are: ao-sci