9 RBTS PAPER(CHEMISTRY)
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9 RBTS PAPER

162423 Melting point of transition metals is plotted in the graph given below :
Identify C, B, A in the graph respectively.

1 Cr, Tc, W
2 W, Mo, Cr
3 \(\mathrm{Mn}, \mathrm{Cr}, \mathrm{Tc}\)
4 \(\mathrm{W}, \mathrm{Tc}, \mathrm{Cr}\)
NCERT-XII-92
9 RBTS PAPER

162424 Which of the following statement concerning lanthanide elements is false :

1 More characteristic oxidation state of lanthanide elements is +3
2 Lanthanides are separated from one another by ion exchange method
3 lonic radii of trivalent lanthandies steadily increases with increase in the atomic number.
4 None of these
NCERT-XII-109
9 RBTS PAPER

162415 Atomic number of that element which is most abundant transition metal in earth crust :

1 8
2 27
3 26
4 13
NCERT-XII-90
9 RBTS PAPER

162416 The correct order of ionic radii of \(\mathrm{Ce}, \mathrm{Pm}\) and \(\mathrm{Yb}\) in +3 oxidation state is :

1 \(\mathrm{Pm}^{3+}<\mathrm{Ce}^{3+}<\mathrm{Yb}^{3+}\)
2 \(\mathrm{Ce}^{3+}<\mathrm{Pm}^{3+}<\mathrm{Yb}^{3+}\)
3 \(\mathrm{Yb}^{3+}<\mathrm{Ce}^{3+}<\mathrm{Pm}^{3+}\)
4 \(\mathrm{Yb}^{3+}<\mathrm{Pm}^{3+}<\mathrm{Ce}^{3+}\)
NCERT-XII-109
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9 RBTS PAPER

162423 Melting point of transition metals is plotted in the graph given below :
Identify C, B, A in the graph respectively.

1 Cr, Tc, W
2 W, Mo, Cr
3 \(\mathrm{Mn}, \mathrm{Cr}, \mathrm{Tc}\)
4 \(\mathrm{W}, \mathrm{Tc}, \mathrm{Cr}\)
NCERT-XII-92
9 RBTS PAPER

162424 Which of the following statement concerning lanthanide elements is false :

1 More characteristic oxidation state of lanthanide elements is +3
2 Lanthanides are separated from one another by ion exchange method
3 lonic radii of trivalent lanthandies steadily increases with increase in the atomic number.
4 None of these
NCERT-XII-109
9 RBTS PAPER

162415 Atomic number of that element which is most abundant transition metal in earth crust :

1 8
2 27
3 26
4 13
NCERT-XII-90
9 RBTS PAPER

162416 The correct order of ionic radii of \(\mathrm{Ce}, \mathrm{Pm}\) and \(\mathrm{Yb}\) in +3 oxidation state is :

1 \(\mathrm{Pm}^{3+}<\mathrm{Ce}^{3+}<\mathrm{Yb}^{3+}\)
2 \(\mathrm{Ce}^{3+}<\mathrm{Pm}^{3+}<\mathrm{Yb}^{3+}\)
3 \(\mathrm{Yb}^{3+}<\mathrm{Ce}^{3+}<\mathrm{Pm}^{3+}\)
4 \(\mathrm{Yb}^{3+}<\mathrm{Pm}^{3+}<\mathrm{Ce}^{3+}\)
NCERT-XII-109
NEET DIGITAL LIBRARY
9 RBTS PAPER

162423 Melting point of transition metals is plotted in the graph given below :
Identify C, B, A in the graph respectively.

1 Cr, Tc, W
2 W, Mo, Cr
3 \(\mathrm{Mn}, \mathrm{Cr}, \mathrm{Tc}\)
4 \(\mathrm{W}, \mathrm{Tc}, \mathrm{Cr}\)
NCERT-XII-92
9 RBTS PAPER

162424 Which of the following statement concerning lanthanide elements is false :

1 More characteristic oxidation state of lanthanide elements is +3
2 Lanthanides are separated from one another by ion exchange method
3 lonic radii of trivalent lanthandies steadily increases with increase in the atomic number.
4 None of these
NCERT-XII-109
9 RBTS PAPER

162415 Atomic number of that element which is most abundant transition metal in earth crust :

1 8
2 27
3 26
4 13
NCERT-XII-90
9 RBTS PAPER

162416 The correct order of ionic radii of \(\mathrm{Ce}, \mathrm{Pm}\) and \(\mathrm{Yb}\) in +3 oxidation state is :

1 \(\mathrm{Pm}^{3+}<\mathrm{Ce}^{3+}<\mathrm{Yb}^{3+}\)
2 \(\mathrm{Ce}^{3+}<\mathrm{Pm}^{3+}<\mathrm{Yb}^{3+}\)
3 \(\mathrm{Yb}^{3+}<\mathrm{Ce}^{3+}<\mathrm{Pm}^{3+}\)
4 \(\mathrm{Yb}^{3+}<\mathrm{Pm}^{3+}<\mathrm{Ce}^{3+}\)
NCERT-XII-109
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9 RBTS PAPER

162423 Melting point of transition metals is plotted in the graph given below :
Identify C, B, A in the graph respectively.

1 Cr, Tc, W
2 W, Mo, Cr
3 \(\mathrm{Mn}, \mathrm{Cr}, \mathrm{Tc}\)
4 \(\mathrm{W}, \mathrm{Tc}, \mathrm{Cr}\)
NCERT-XII-92
9 RBTS PAPER

162424 Which of the following statement concerning lanthanide elements is false :

1 More characteristic oxidation state of lanthanide elements is +3
2 Lanthanides are separated from one another by ion exchange method
3 lonic radii of trivalent lanthandies steadily increases with increase in the atomic number.
4 None of these
NCERT-XII-109
9 RBTS PAPER

162415 Atomic number of that element which is most abundant transition metal in earth crust :

1 8
2 27
3 26
4 13
NCERT-XII-90
9 RBTS PAPER

162416 The correct order of ionic radii of \(\mathrm{Ce}, \mathrm{Pm}\) and \(\mathrm{Yb}\) in +3 oxidation state is :

1 \(\mathrm{Pm}^{3+}<\mathrm{Ce}^{3+}<\mathrm{Yb}^{3+}\)
2 \(\mathrm{Ce}^{3+}<\mathrm{Pm}^{3+}<\mathrm{Yb}^{3+}\)
3 \(\mathrm{Yb}^{3+}<\mathrm{Ce}^{3+}<\mathrm{Pm}^{3+}\)
4 \(\mathrm{Yb}^{3+}<\mathrm{Pm}^{3+}<\mathrm{Ce}^{3+}\)
NCERT-XII-109
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