General characteristics of the transition elements
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CHXII08:THE D- & F-BLOCK ELEMENTS

321436 Which element from the following in +3 oxidation state forms colourless compounds?

1 \({\text{Sc(Z = 21)}}\)
2 \({\text{Ti(Z = 22)}}\)
3 \({\text{V(Z = 23)}}\)
4 \({\text{Fe(Z = 26)}}\)
MHTCET - 2021
CHXII08:THE D- & F-BLOCK ELEMENTS

321437 Formation of coloured solution is possible when metal ion in the compound contain

1 lone pair of electrons
2 unpaired electrons
3 paired electrons
4 none of these.
KCET - 2007
CHXII08:THE D- & F-BLOCK ELEMENTS

321438 Assertion :
Cuprous ion \(\left(\mathrm{Cu}^{+}\right)\)is colourless whereas cupric ion \(\left(\mathrm{Cu}^{++}\right)\)is blue in aqueous solution.
Reason :
Cuprous ion \(\left(\mathrm{Cu}^{+}\right)\)has unpaired electrons while cupric ion \(\left(\mathrm{Cu}^{++}\right)\)does not.

1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but Reason is correct.
CHXII08:THE D- & F-BLOCK ELEMENTS

321439 Which of the following compounds show colour due to d - d transition?

1 \({\mathrm{\mathrm{K}_{2} \mathrm{Cr}_{2} \mathrm{O}_{7}}}\)
2 \({\mathrm{\mathrm{CuSO}_{4} \cdot 5 \mathrm{H}_{2} \mathrm{O}}}\)
3 \({\mathrm{\mathrm{KMnO}_{4}}}\)
4 \({\mathrm{\mathrm{K}_{2} \mathrm{CrO}_{4}}}\)
JEE Main - 2024
NEET DIGITAL LIBRARY
CHXII08:THE D- & F-BLOCK ELEMENTS

321436 Which element from the following in +3 oxidation state forms colourless compounds?

1 \({\text{Sc(Z = 21)}}\)
2 \({\text{Ti(Z = 22)}}\)
3 \({\text{V(Z = 23)}}\)
4 \({\text{Fe(Z = 26)}}\)
MHTCET - 2021
CHXII08:THE D- & F-BLOCK ELEMENTS

321437 Formation of coloured solution is possible when metal ion in the compound contain

1 lone pair of electrons
2 unpaired electrons
3 paired electrons
4 none of these.
KCET - 2007
CHXII08:THE D- & F-BLOCK ELEMENTS

321438 Assertion :
Cuprous ion \(\left(\mathrm{Cu}^{+}\right)\)is colourless whereas cupric ion \(\left(\mathrm{Cu}^{++}\right)\)is blue in aqueous solution.
Reason :
Cuprous ion \(\left(\mathrm{Cu}^{+}\right)\)has unpaired electrons while cupric ion \(\left(\mathrm{Cu}^{++}\right)\)does not.

1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but Reason is correct.
CHXII08:THE D- & F-BLOCK ELEMENTS

321439 Which of the following compounds show colour due to d - d transition?

1 \({\mathrm{\mathrm{K}_{2} \mathrm{Cr}_{2} \mathrm{O}_{7}}}\)
2 \({\mathrm{\mathrm{CuSO}_{4} \cdot 5 \mathrm{H}_{2} \mathrm{O}}}\)
3 \({\mathrm{\mathrm{KMnO}_{4}}}\)
4 \({\mathrm{\mathrm{K}_{2} \mathrm{CrO}_{4}}}\)
JEE Main - 2024
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CHXII08:THE D- & F-BLOCK ELEMENTS

321436 Which element from the following in +3 oxidation state forms colourless compounds?

1 \({\text{Sc(Z = 21)}}\)
2 \({\text{Ti(Z = 22)}}\)
3 \({\text{V(Z = 23)}}\)
4 \({\text{Fe(Z = 26)}}\)
MHTCET - 2021
CHXII08:THE D- & F-BLOCK ELEMENTS

321437 Formation of coloured solution is possible when metal ion in the compound contain

1 lone pair of electrons
2 unpaired electrons
3 paired electrons
4 none of these.
KCET - 2007
CHXII08:THE D- & F-BLOCK ELEMENTS

321438 Assertion :
Cuprous ion \(\left(\mathrm{Cu}^{+}\right)\)is colourless whereas cupric ion \(\left(\mathrm{Cu}^{++}\right)\)is blue in aqueous solution.
Reason :
Cuprous ion \(\left(\mathrm{Cu}^{+}\right)\)has unpaired electrons while cupric ion \(\left(\mathrm{Cu}^{++}\right)\)does not.

1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but Reason is correct.
CHXII08:THE D- & F-BLOCK ELEMENTS

321439 Which of the following compounds show colour due to d - d transition?

1 \({\mathrm{\mathrm{K}_{2} \mathrm{Cr}_{2} \mathrm{O}_{7}}}\)
2 \({\mathrm{\mathrm{CuSO}_{4} \cdot 5 \mathrm{H}_{2} \mathrm{O}}}\)
3 \({\mathrm{\mathrm{KMnO}_{4}}}\)
4 \({\mathrm{\mathrm{K}_{2} \mathrm{CrO}_{4}}}\)
JEE Main - 2024
For More Updates join with Us
CHXII08:THE D- & F-BLOCK ELEMENTS

321436 Which element from the following in +3 oxidation state forms colourless compounds?

1 \({\text{Sc(Z = 21)}}\)
2 \({\text{Ti(Z = 22)}}\)
3 \({\text{V(Z = 23)}}\)
4 \({\text{Fe(Z = 26)}}\)
MHTCET - 2021
CHXII08:THE D- & F-BLOCK ELEMENTS

321437 Formation of coloured solution is possible when metal ion in the compound contain

1 lone pair of electrons
2 unpaired electrons
3 paired electrons
4 none of these.
KCET - 2007
CHXII08:THE D- & F-BLOCK ELEMENTS

321438 Assertion :
Cuprous ion \(\left(\mathrm{Cu}^{+}\right)\)is colourless whereas cupric ion \(\left(\mathrm{Cu}^{++}\right)\)is blue in aqueous solution.
Reason :
Cuprous ion \(\left(\mathrm{Cu}^{+}\right)\)has unpaired electrons while cupric ion \(\left(\mathrm{Cu}^{++}\right)\)does not.

1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but Reason is correct.
CHXII08:THE D- & F-BLOCK ELEMENTS

321439 Which of the following compounds show colour due to d - d transition?

1 \({\mathrm{\mathrm{K}_{2} \mathrm{Cr}_{2} \mathrm{O}_{7}}}\)
2 \({\mathrm{\mathrm{CuSO}_{4} \cdot 5 \mathrm{H}_{2} \mathrm{O}}}\)
3 \({\mathrm{\mathrm{KMnO}_{4}}}\)
4 \({\mathrm{\mathrm{K}_{2} \mathrm{CrO}_{4}}}\)
JEE Main - 2024