Question

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WBCS Examination Main Compulsory - 2015 61
38. The distance of mesosphere from the Earth's surface is
approximately
(A) 30 Km.
(B) 50 Km.
(C) 70 Km.
(D) 90 Km.
39. The following compound does not react with ozone layer
(A) CFC
(B) HFC
(C) Ca (Ocl) CI
40. Arsenic is associated with
(A) Myeloma
(B) Melanoma
(C) Sarcoma
(D) Glioma
41. The total energy of a given mass of a gas at a given
temperature depends on its
(D) CCI,
11​

Answer 1

Answer:

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