Compounds of transition elements
« Previous Topic: Comparision of lanthanoids and actionoids Next Topic: General characteristics of the transition elements »
NEET DIGITAL LIBRARY
CHXII08:THE D- & F-BLOCK ELEMENTS

321241 Which of the following are amphoteric oxides? \(\mathrm{\mathrm{Mn}_{2} \mathrm{O}_{7}, \mathrm{CrO}_{3}, \mathrm{Cr}_{2} \mathrm{O}_{3}, \mathrm{CrO}, \mathrm{V}_{2} \mathrm{O}_{5}, \mathrm{~V}_{2} \mathrm{O}_{4}}\)

1 \(\mathrm{\mathrm{V}_{2} \mathrm{O}_{5}, \mathrm{Cr}_{2} \mathrm{O}_{3}}\)
2 \(\mathrm{\mathrm{Mn}_{2} \mathrm{O}_{7}, \mathrm{CrO}_{3}}\)
3 \(\mathrm{\mathrm{CrO}, \mathrm{V}_{2} \mathrm{O}_{5}}\)
4 \(\mathrm{\mathrm{V}_{2} \mathrm{O}_{5}, \mathrm{~V}_{2} \mathrm{O}_{4}}\)
CHXII08:THE D- & F-BLOCK ELEMENTS

321242 Which one of the following ions exhibits \(\mathrm{\mathrm{d}-\mathrm{d}}\) transition and paramagnetism as well?

1 \(\mathrm{\mathrm{MnO}_{4}^{-}}\)
2 \(\mathrm{\mathrm{MnO}_{4}^{2-}}\)
3 \(\mathrm{\mathrm{Cr}_{2} \mathrm{O}_{7}^{2-}}\)
4 \(\mathrm{\mathrm{CrO}_{4}^{2-}}\)
NEET - 2018
CHXII08:THE D- & F-BLOCK ELEMENTS

321243 Which oxide of manganese is amphoteric.?

1 \(\mathrm{MnO}_{2}\)
2 \(\mathrm{Mn}_{2} \mathrm{O}_{3}\)
3 \(\mathrm{Mn}_{2} \mathrm{O}_{7}\)
4 \(\mathrm{MnO}\)
CHXII08:THE D- & F-BLOCK ELEMENTS

321244 Choose the correct statements from the following.
(I) \({\mathrm{\mathrm{Mn}_{2} \mathrm{O}_{7}}}\) is an oil at room temperature.
(II) \({\mathrm{\mathrm{V}_{2} \mathrm{O}_{4}}}\) reacts with acid to give \({\mathrm{\mathrm{VO}_{2}^{2+}}}\).
(III) CrO is a basic oxide.
(IV) \({\mathrm{\mathrm{V}_{2} \mathrm{O}_{5}}}\) does not react with acid.
Choose the correct answer from the options given below

1 (I) and (III) only
2 (I), (II) and (III) only
3 (II) and (III) only
4 (I), (II) and (IV) only
JEE Main - 2024
Join With Us for More Updates
CHXII08:THE D- & F-BLOCK ELEMENTS

321241 Which of the following are amphoteric oxides? \(\mathrm{\mathrm{Mn}_{2} \mathrm{O}_{7}, \mathrm{CrO}_{3}, \mathrm{Cr}_{2} \mathrm{O}_{3}, \mathrm{CrO}, \mathrm{V}_{2} \mathrm{O}_{5}, \mathrm{~V}_{2} \mathrm{O}_{4}}\)

1 \(\mathrm{\mathrm{V}_{2} \mathrm{O}_{5}, \mathrm{Cr}_{2} \mathrm{O}_{3}}\)
2 \(\mathrm{\mathrm{Mn}_{2} \mathrm{O}_{7}, \mathrm{CrO}_{3}}\)
3 \(\mathrm{\mathrm{CrO}, \mathrm{V}_{2} \mathrm{O}_{5}}\)
4 \(\mathrm{\mathrm{V}_{2} \mathrm{O}_{5}, \mathrm{~V}_{2} \mathrm{O}_{4}}\)
CHXII08:THE D- & F-BLOCK ELEMENTS

321242 Which one of the following ions exhibits \(\mathrm{\mathrm{d}-\mathrm{d}}\) transition and paramagnetism as well?

1 \(\mathrm{\mathrm{MnO}_{4}^{-}}\)
2 \(\mathrm{\mathrm{MnO}_{4}^{2-}}\)
3 \(\mathrm{\mathrm{Cr}_{2} \mathrm{O}_{7}^{2-}}\)
4 \(\mathrm{\mathrm{CrO}_{4}^{2-}}\)
NEET - 2018
CHXII08:THE D- & F-BLOCK ELEMENTS

321243 Which oxide of manganese is amphoteric.?

1 \(\mathrm{MnO}_{2}\)
2 \(\mathrm{Mn}_{2} \mathrm{O}_{3}\)
3 \(\mathrm{Mn}_{2} \mathrm{O}_{7}\)
4 \(\mathrm{MnO}\)
CHXII08:THE D- & F-BLOCK ELEMENTS

321244 Choose the correct statements from the following.
(I) \({\mathrm{\mathrm{Mn}_{2} \mathrm{O}_{7}}}\) is an oil at room temperature.
(II) \({\mathrm{\mathrm{V}_{2} \mathrm{O}_{4}}}\) reacts with acid to give \({\mathrm{\mathrm{VO}_{2}^{2+}}}\).
(III) CrO is a basic oxide.
(IV) \({\mathrm{\mathrm{V}_{2} \mathrm{O}_{5}}}\) does not react with acid.
Choose the correct answer from the options given below

1 (I) and (III) only
2 (I), (II) and (III) only
3 (II) and (III) only
4 (I), (II) and (IV) only
JEE Main - 2024
For More Updates join with Us
NEET Test Series from KOTA - 10 Papers In MS WORD WhatsApp Here
CHXII08:THE D- & F-BLOCK ELEMENTS

321241 Which of the following are amphoteric oxides? \(\mathrm{\mathrm{Mn}_{2} \mathrm{O}_{7}, \mathrm{CrO}_{3}, \mathrm{Cr}_{2} \mathrm{O}_{3}, \mathrm{CrO}, \mathrm{V}_{2} \mathrm{O}_{5}, \mathrm{~V}_{2} \mathrm{O}_{4}}\)

1 \(\mathrm{\mathrm{V}_{2} \mathrm{O}_{5}, \mathrm{Cr}_{2} \mathrm{O}_{3}}\)
2 \(\mathrm{\mathrm{Mn}_{2} \mathrm{O}_{7}, \mathrm{CrO}_{3}}\)
3 \(\mathrm{\mathrm{CrO}, \mathrm{V}_{2} \mathrm{O}_{5}}\)
4 \(\mathrm{\mathrm{V}_{2} \mathrm{O}_{5}, \mathrm{~V}_{2} \mathrm{O}_{4}}\)
CHXII08:THE D- & F-BLOCK ELEMENTS

321242 Which one of the following ions exhibits \(\mathrm{\mathrm{d}-\mathrm{d}}\) transition and paramagnetism as well?

1 \(\mathrm{\mathrm{MnO}_{4}^{-}}\)
2 \(\mathrm{\mathrm{MnO}_{4}^{2-}}\)
3 \(\mathrm{\mathrm{Cr}_{2} \mathrm{O}_{7}^{2-}}\)
4 \(\mathrm{\mathrm{CrO}_{4}^{2-}}\)
NEET - 2018
CHXII08:THE D- & F-BLOCK ELEMENTS

321243 Which oxide of manganese is amphoteric.?

1 \(\mathrm{MnO}_{2}\)
2 \(\mathrm{Mn}_{2} \mathrm{O}_{3}\)
3 \(\mathrm{Mn}_{2} \mathrm{O}_{7}\)
4 \(\mathrm{MnO}\)
CHXII08:THE D- & F-BLOCK ELEMENTS

321244 Choose the correct statements from the following.
(I) \({\mathrm{\mathrm{Mn}_{2} \mathrm{O}_{7}}}\) is an oil at room temperature.
(II) \({\mathrm{\mathrm{V}_{2} \mathrm{O}_{4}}}\) reacts with acid to give \({\mathrm{\mathrm{VO}_{2}^{2+}}}\).
(III) CrO is a basic oxide.
(IV) \({\mathrm{\mathrm{V}_{2} \mathrm{O}_{5}}}\) does not react with acid.
Choose the correct answer from the options given below

1 (I) and (III) only
2 (I), (II) and (III) only
3 (II) and (III) only
4 (I), (II) and (IV) only
JEE Main - 2024
NEET DIGITAL LIBRARY
CHXII08:THE D- & F-BLOCK ELEMENTS

321241 Which of the following are amphoteric oxides? \(\mathrm{\mathrm{Mn}_{2} \mathrm{O}_{7}, \mathrm{CrO}_{3}, \mathrm{Cr}_{2} \mathrm{O}_{3}, \mathrm{CrO}, \mathrm{V}_{2} \mathrm{O}_{5}, \mathrm{~V}_{2} \mathrm{O}_{4}}\)

1 \(\mathrm{\mathrm{V}_{2} \mathrm{O}_{5}, \mathrm{Cr}_{2} \mathrm{O}_{3}}\)
2 \(\mathrm{\mathrm{Mn}_{2} \mathrm{O}_{7}, \mathrm{CrO}_{3}}\)
3 \(\mathrm{\mathrm{CrO}, \mathrm{V}_{2} \mathrm{O}_{5}}\)
4 \(\mathrm{\mathrm{V}_{2} \mathrm{O}_{5}, \mathrm{~V}_{2} \mathrm{O}_{4}}\)
CHXII08:THE D- & F-BLOCK ELEMENTS

321242 Which one of the following ions exhibits \(\mathrm{\mathrm{d}-\mathrm{d}}\) transition and paramagnetism as well?

1 \(\mathrm{\mathrm{MnO}_{4}^{-}}\)
2 \(\mathrm{\mathrm{MnO}_{4}^{2-}}\)
3 \(\mathrm{\mathrm{Cr}_{2} \mathrm{O}_{7}^{2-}}\)
4 \(\mathrm{\mathrm{CrO}_{4}^{2-}}\)
NEET - 2018
CHXII08:THE D- & F-BLOCK ELEMENTS

321243 Which oxide of manganese is amphoteric.?

1 \(\mathrm{MnO}_{2}\)
2 \(\mathrm{Mn}_{2} \mathrm{O}_{3}\)
3 \(\mathrm{Mn}_{2} \mathrm{O}_{7}\)
4 \(\mathrm{MnO}\)
CHXII08:THE D- & F-BLOCK ELEMENTS

321244 Choose the correct statements from the following.
(I) \({\mathrm{\mathrm{Mn}_{2} \mathrm{O}_{7}}}\) is an oil at room temperature.
(II) \({\mathrm{\mathrm{V}_{2} \mathrm{O}_{4}}}\) reacts with acid to give \({\mathrm{\mathrm{VO}_{2}^{2+}}}\).
(III) CrO is a basic oxide.
(IV) \({\mathrm{\mathrm{V}_{2} \mathrm{O}_{5}}}\) does not react with acid.
Choose the correct answer from the options given below

1 (I) and (III) only
2 (I), (II) and (III) only
3 (II) and (III) only
4 (I), (II) and (IV) only
JEE Main - 2024
Join With Us for More Updates