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Q.

 Set - I Set - II
A)Mn2O7i)Covalent green oil
B)CrO3ii)Basic
C)V2O5iii)Amphoteric
D)CrOiv)Anhydride of cromic acid
  v)Acidic
 (A)(B)(C)(D)
1)iiviiiii
2)iiiviiii
3)ivviiii
4)iiiiiivi

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a

2

b

1

c

3

d

4

answer is A.

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Detailed Solution

Mn2O7   - Covalent green oil

CrO3 - Anhydride of chromic acid

V2O5 - Amphoteric

CrO -Basic

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