D-And F-Block Elements Ques 72

Question: A group of acidic oxide is

[MP PET 2003]

Options:

A) CrO3,Mn2O7

B) ZnO,Al2O3

C) CaO,ZnO

D) Na2O,Al2O3

Show Answer

Answer:

Correct Answer: A

Solution:

CrO3andMn2O7 are acidic oxide since they react with water to form acid. CrO3+H2OH2CrO4Chromicacid, ; Mn2O7+H2O2HMnO4Permagnicacid,



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