Correct statements are(A) Second most abundant element in atmosphere is Oxygen(B) 0.03 - 0.1 % of sulphur is present in earth's crust(C) Selenides & tellurides are present in phosphide ores(D) O , S , Se , Te are called pnicogens
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a
All
b
A , B only
c
A , B , D only
d
A , C , D only
answer is B.
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Detailed Solution
Selenides and Tellurides are present as impurities in Sulphide ores.O , S , Se , Te are called chalcogens.
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Correct statements are(A) Second most abundant element in atmosphere is Oxygen(B) 0.03 - 0.1 % of sulphur is present in earth's crust(C) Selenides & tellurides are present in phosphide ores(D) O , S , Se , Te are called pnicogens