All the elements in group VIA are ___________________ in nature?
(A) hygroscopic
(B) metals
(C) polymeric
(D) all of above
In which compound nitrogen has maximum oxidation state____________________?
(A) N2O
(B) NO2
(C) HNO2
(D) HNO3
Which of the elements show passivity when treated with conc. HNO3?
(A) Fe
(B) A
(C) Cr
(D) All of the above
Which one of the following compounds usually smells like garlic ?
(A) P2O3
(B) P2O5
(C) H3PO3
(D) All have same smell
The composition of brown ring in nitrate test is_________________?
(A) FeSO4.No
(B) FeSO4.No2
(C) FeSO4.No3
(D) FeSO4.N2o