9 RBTS PAPER(CHEMISTRY)
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9 RBTS PAPER

162444 Which of the following systems has maximum number of unpaired electrons or maximum paramagnetism :

1 \(d^5\) (octahedral)
2 \(d^9\) (octahedral)
3 \(d^7\) (octahedral)
4 None of these
NCERT-XII-130
9 RBTS PAPER

162445 The crystal field splitting energy for octahedral \(\left(\Delta_0\right)\) and tetrahedral \(\left(\Delta_t\right)\) complexes is related as :

1 \(\Delta_{\mathrm{t}}=\frac{1}{2} \Delta_0\)
2 \(\Delta_{\mathrm{t}}=\frac{4}{9} \Delta_0\)
3 \(\Delta_{\mathrm{t}}=\frac{3}{5} \Delta_0\)
4 \(\Delta_{\mathrm{t}}=\frac{2}{5} \Delta_0\)
NCERT-XII-133
9 RBTS PAPER

162446 The mineral beryl is

1 \(\mathrm{Be}_3 \mathrm{Al}_2 \mathrm{Si}_6 \mathrm{O}_{18}\)
2 \(\left(\mathrm{BeCl}_2\right)_{\mathrm{n}}\)
3 \(\left(\mathrm{NH}_4\right)_2 \mathrm{SO}_4 \cdot \mathrm{FeSO}_4 \cdot 6 \mathrm{H}_2 \mathrm{O}\)
4 \(\left[\mathrm{V}(\mathrm{Co})_5\right]\)
NCERT-XII-135
9 RBTS PAPER

162447 Which of the following is not a double salt :

1 Carnalite
2 Chrome alum
3 Blue vitriol
4 None of these
Mod. NCERT-XII
9 RBTS PAPER

162448 Ruby is \(\mathrm{Al}_2 \mathrm{O}_3\) containing \(\mathrm{Cr}\) as -

1 \(\mathrm{Cr}^0\)
2 \(\mathrm{Cr}^{+3}\)
3 \(\mathrm{Cr}^{+6}\)
4 \(\mathrm{Cr}^{+2}\)
NCERT-XII-134
NEET DIGITAL LIBRARY
9 RBTS PAPER

162444 Which of the following systems has maximum number of unpaired electrons or maximum paramagnetism :

1 \(d^5\) (octahedral)
2 \(d^9\) (octahedral)
3 \(d^7\) (octahedral)
4 None of these
NCERT-XII-130
9 RBTS PAPER

162445 The crystal field splitting energy for octahedral \(\left(\Delta_0\right)\) and tetrahedral \(\left(\Delta_t\right)\) complexes is related as :

1 \(\Delta_{\mathrm{t}}=\frac{1}{2} \Delta_0\)
2 \(\Delta_{\mathrm{t}}=\frac{4}{9} \Delta_0\)
3 \(\Delta_{\mathrm{t}}=\frac{3}{5} \Delta_0\)
4 \(\Delta_{\mathrm{t}}=\frac{2}{5} \Delta_0\)
NCERT-XII-133
9 RBTS PAPER

162446 The mineral beryl is

1 \(\mathrm{Be}_3 \mathrm{Al}_2 \mathrm{Si}_6 \mathrm{O}_{18}\)
2 \(\left(\mathrm{BeCl}_2\right)_{\mathrm{n}}\)
3 \(\left(\mathrm{NH}_4\right)_2 \mathrm{SO}_4 \cdot \mathrm{FeSO}_4 \cdot 6 \mathrm{H}_2 \mathrm{O}\)
4 \(\left[\mathrm{V}(\mathrm{Co})_5\right]\)
NCERT-XII-135
9 RBTS PAPER

162447 Which of the following is not a double salt :

1 Carnalite
2 Chrome alum
3 Blue vitriol
4 None of these
Mod. NCERT-XII
9 RBTS PAPER

162448 Ruby is \(\mathrm{Al}_2 \mathrm{O}_3\) containing \(\mathrm{Cr}\) as -

1 \(\mathrm{Cr}^0\)
2 \(\mathrm{Cr}^{+3}\)
3 \(\mathrm{Cr}^{+6}\)
4 \(\mathrm{Cr}^{+2}\)
NCERT-XII-134
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9 RBTS PAPER

162444 Which of the following systems has maximum number of unpaired electrons or maximum paramagnetism :

1 \(d^5\) (octahedral)
2 \(d^9\) (octahedral)
3 \(d^7\) (octahedral)
4 None of these
NCERT-XII-130
9 RBTS PAPER

162445 The crystal field splitting energy for octahedral \(\left(\Delta_0\right)\) and tetrahedral \(\left(\Delta_t\right)\) complexes is related as :

1 \(\Delta_{\mathrm{t}}=\frac{1}{2} \Delta_0\)
2 \(\Delta_{\mathrm{t}}=\frac{4}{9} \Delta_0\)
3 \(\Delta_{\mathrm{t}}=\frac{3}{5} \Delta_0\)
4 \(\Delta_{\mathrm{t}}=\frac{2}{5} \Delta_0\)
NCERT-XII-133
9 RBTS PAPER

162446 The mineral beryl is

1 \(\mathrm{Be}_3 \mathrm{Al}_2 \mathrm{Si}_6 \mathrm{O}_{18}\)
2 \(\left(\mathrm{BeCl}_2\right)_{\mathrm{n}}\)
3 \(\left(\mathrm{NH}_4\right)_2 \mathrm{SO}_4 \cdot \mathrm{FeSO}_4 \cdot 6 \mathrm{H}_2 \mathrm{O}\)
4 \(\left[\mathrm{V}(\mathrm{Co})_5\right]\)
NCERT-XII-135
9 RBTS PAPER

162447 Which of the following is not a double salt :

1 Carnalite
2 Chrome alum
3 Blue vitriol
4 None of these
Mod. NCERT-XII
9 RBTS PAPER

162448 Ruby is \(\mathrm{Al}_2 \mathrm{O}_3\) containing \(\mathrm{Cr}\) as -

1 \(\mathrm{Cr}^0\)
2 \(\mathrm{Cr}^{+3}\)
3 \(\mathrm{Cr}^{+6}\)
4 \(\mathrm{Cr}^{+2}\)
NCERT-XII-134
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9 RBTS PAPER

162444 Which of the following systems has maximum number of unpaired electrons or maximum paramagnetism :

1 \(d^5\) (octahedral)
2 \(d^9\) (octahedral)
3 \(d^7\) (octahedral)
4 None of these
NCERT-XII-130
9 RBTS PAPER

162445 The crystal field splitting energy for octahedral \(\left(\Delta_0\right)\) and tetrahedral \(\left(\Delta_t\right)\) complexes is related as :

1 \(\Delta_{\mathrm{t}}=\frac{1}{2} \Delta_0\)
2 \(\Delta_{\mathrm{t}}=\frac{4}{9} \Delta_0\)
3 \(\Delta_{\mathrm{t}}=\frac{3}{5} \Delta_0\)
4 \(\Delta_{\mathrm{t}}=\frac{2}{5} \Delta_0\)
NCERT-XII-133
9 RBTS PAPER

162446 The mineral beryl is

1 \(\mathrm{Be}_3 \mathrm{Al}_2 \mathrm{Si}_6 \mathrm{O}_{18}\)
2 \(\left(\mathrm{BeCl}_2\right)_{\mathrm{n}}\)
3 \(\left(\mathrm{NH}_4\right)_2 \mathrm{SO}_4 \cdot \mathrm{FeSO}_4 \cdot 6 \mathrm{H}_2 \mathrm{O}\)
4 \(\left[\mathrm{V}(\mathrm{Co})_5\right]\)
NCERT-XII-135
9 RBTS PAPER

162447 Which of the following is not a double salt :

1 Carnalite
2 Chrome alum
3 Blue vitriol
4 None of these
Mod. NCERT-XII
9 RBTS PAPER

162448 Ruby is \(\mathrm{Al}_2 \mathrm{O}_3\) containing \(\mathrm{Cr}\) as -

1 \(\mathrm{Cr}^0\)
2 \(\mathrm{Cr}^{+3}\)
3 \(\mathrm{Cr}^{+6}\)
4 \(\mathrm{Cr}^{+2}\)
NCERT-XII-134
NEET DIGITAL LIBRARY
9 RBTS PAPER

162444 Which of the following systems has maximum number of unpaired electrons or maximum paramagnetism :

1 \(d^5\) (octahedral)
2 \(d^9\) (octahedral)
3 \(d^7\) (octahedral)
4 None of these
NCERT-XII-130
9 RBTS PAPER

162445 The crystal field splitting energy for octahedral \(\left(\Delta_0\right)\) and tetrahedral \(\left(\Delta_t\right)\) complexes is related as :

1 \(\Delta_{\mathrm{t}}=\frac{1}{2} \Delta_0\)
2 \(\Delta_{\mathrm{t}}=\frac{4}{9} \Delta_0\)
3 \(\Delta_{\mathrm{t}}=\frac{3}{5} \Delta_0\)
4 \(\Delta_{\mathrm{t}}=\frac{2}{5} \Delta_0\)
NCERT-XII-133
9 RBTS PAPER

162446 The mineral beryl is

1 \(\mathrm{Be}_3 \mathrm{Al}_2 \mathrm{Si}_6 \mathrm{O}_{18}\)
2 \(\left(\mathrm{BeCl}_2\right)_{\mathrm{n}}\)
3 \(\left(\mathrm{NH}_4\right)_2 \mathrm{SO}_4 \cdot \mathrm{FeSO}_4 \cdot 6 \mathrm{H}_2 \mathrm{O}\)
4 \(\left[\mathrm{V}(\mathrm{Co})_5\right]\)
NCERT-XII-135
9 RBTS PAPER

162447 Which of the following is not a double salt :

1 Carnalite
2 Chrome alum
3 Blue vitriol
4 None of these
Mod. NCERT-XII
9 RBTS PAPER

162448 Ruby is \(\mathrm{Al}_2 \mathrm{O}_3\) containing \(\mathrm{Cr}\) as -

1 \(\mathrm{Cr}^0\)
2 \(\mathrm{Cr}^{+3}\)
3 \(\mathrm{Cr}^{+6}\)
4 \(\mathrm{Cr}^{+2}\)
NCERT-XII-134