08. THE D- & F-BLOCK ELEMENTS[KARNATAKA CET EXCLUSIVE]
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CHEMISTRY(KCET)

285473 \(\mathrm{MSO}_4 \xrightarrow{\mathrm{NH}_4 \mathrm{OH}} \mathrm{x} \downarrow \xrightarrow[\substack{\text { excess } \\ \text { white }}]{\mathrm{NH}_4 \mathrm{OH}} \mathrm{Y} \xrightarrow{\mathrm{H}_2 \mathrm{~S}} \mathrm{Z} \downarrow\)
Here M and Z are

1 \(\mathrm{Zn}, \mathrm{ZnS}\)
2 \(\mathrm{Al}, \mathrm{Al}_2 \mathrm{~S}_3\)
3 \(\mathrm{Cu}, \mathrm{ZnS}\)
4 \(\mathrm{Fe}, \mathrm{FeS}\)
Karnataka CET 2015
CHEMISTRY(KCET)

285471 When a brown compound of\(\mathrm{Mn}(A)\) is treated with HCl , it gives a gas \((B)\). The gas \((B)\) taken in excess reacts with \(\mathrm{NH}_3\) to give an explosive compound \((C)\).
The compounds \(A, B\) and \(C\) are

1 \(A=\mathrm{MnO}_2, B=\mathrm{Cl}_2, C=\mathrm{NCl}_3\)
2 \(A=\mathrm{MnO}, B=\mathrm{Cl}_2, C=\mathrm{NH}_3 \mathrm{Cl}\)
3 \(A=\mathrm{Mn}_3 \mathrm{O}_4, B=\mathrm{Cl}_2, C=\mathrm{NCl}_3\)
4 \(A=\mathrm{MnO}_3, B=\mathrm{Cl}_2, C=\mathrm{NCl}_2\)
Karnataka CET 2016
CHEMISTRY(KCET)

285474 The electronic configuration of\(\mathrm{Gd}^{2+}\) is (at. no. of Gd is 64)

1 \([\mathrm{Xe}] 4 f^7\)
2 \([\mathrm{Xe}] 4 f^7 5 \mathrm{~d}^1\)
3 \([\mathrm{Xe}] 4 f^8\)
4 \([\mathrm{Xe}] 4 f^7 5 \mathrm{~d}^1 6 \mathrm{~s}^2\)
Karnataka CET 2015
CHEMISTRY(KCET)

285446 The transition element (\(5 \%\) ) present with lanthanoid metal in Misch metal is:

1 Mg
2 Fe
3 Zn
4 Co
Karnataka CET 2024
CHEMISTRY(KCET)

285447 Which of the following statements related to lanthanoids is incorrect?

1 Lanthanoids are silvery white soft metals
2 Samarium shows +2 oxidation state
3 \(\mathrm{Ce}^{+4}\) solutions are widely used as oxidising agents in titrimetric analysis
4 Colour of Lanthanoid ion in solution is due to d-d transition
Karnataka CET 2024
NEET DIGITAL LIBRARY
CHEMISTRY(KCET)

285473 \(\mathrm{MSO}_4 \xrightarrow{\mathrm{NH}_4 \mathrm{OH}} \mathrm{x} \downarrow \xrightarrow[\substack{\text { excess } \\ \text { white }}]{\mathrm{NH}_4 \mathrm{OH}} \mathrm{Y} \xrightarrow{\mathrm{H}_2 \mathrm{~S}} \mathrm{Z} \downarrow\)
Here M and Z are

1 \(\mathrm{Zn}, \mathrm{ZnS}\)
2 \(\mathrm{Al}, \mathrm{Al}_2 \mathrm{~S}_3\)
3 \(\mathrm{Cu}, \mathrm{ZnS}\)
4 \(\mathrm{Fe}, \mathrm{FeS}\)
Karnataka CET 2015
CHEMISTRY(KCET)

285471 When a brown compound of\(\mathrm{Mn}(A)\) is treated with HCl , it gives a gas \((B)\). The gas \((B)\) taken in excess reacts with \(\mathrm{NH}_3\) to give an explosive compound \((C)\).
The compounds \(A, B\) and \(C\) are

1 \(A=\mathrm{MnO}_2, B=\mathrm{Cl}_2, C=\mathrm{NCl}_3\)
2 \(A=\mathrm{MnO}, B=\mathrm{Cl}_2, C=\mathrm{NH}_3 \mathrm{Cl}\)
3 \(A=\mathrm{Mn}_3 \mathrm{O}_4, B=\mathrm{Cl}_2, C=\mathrm{NCl}_3\)
4 \(A=\mathrm{MnO}_3, B=\mathrm{Cl}_2, C=\mathrm{NCl}_2\)
Karnataka CET 2016
CHEMISTRY(KCET)

285474 The electronic configuration of\(\mathrm{Gd}^{2+}\) is (at. no. of Gd is 64)

1 \([\mathrm{Xe}] 4 f^7\)
2 \([\mathrm{Xe}] 4 f^7 5 \mathrm{~d}^1\)
3 \([\mathrm{Xe}] 4 f^8\)
4 \([\mathrm{Xe}] 4 f^7 5 \mathrm{~d}^1 6 \mathrm{~s}^2\)
Karnataka CET 2015
CHEMISTRY(KCET)

285446 The transition element (\(5 \%\) ) present with lanthanoid metal in Misch metal is:

1 Mg
2 Fe
3 Zn
4 Co
Karnataka CET 2024
CHEMISTRY(KCET)

285447 Which of the following statements related to lanthanoids is incorrect?

1 Lanthanoids are silvery white soft metals
2 Samarium shows +2 oxidation state
3 \(\mathrm{Ce}^{+4}\) solutions are widely used as oxidising agents in titrimetric analysis
4 Colour of Lanthanoid ion in solution is due to d-d transition
Karnataka CET 2024
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CHEMISTRY(KCET)

285473 \(\mathrm{MSO}_4 \xrightarrow{\mathrm{NH}_4 \mathrm{OH}} \mathrm{x} \downarrow \xrightarrow[\substack{\text { excess } \\ \text { white }}]{\mathrm{NH}_4 \mathrm{OH}} \mathrm{Y} \xrightarrow{\mathrm{H}_2 \mathrm{~S}} \mathrm{Z} \downarrow\)
Here M and Z are

1 \(\mathrm{Zn}, \mathrm{ZnS}\)
2 \(\mathrm{Al}, \mathrm{Al}_2 \mathrm{~S}_3\)
3 \(\mathrm{Cu}, \mathrm{ZnS}\)
4 \(\mathrm{Fe}, \mathrm{FeS}\)
Karnataka CET 2015
CHEMISTRY(KCET)

285471 When a brown compound of\(\mathrm{Mn}(A)\) is treated with HCl , it gives a gas \((B)\). The gas \((B)\) taken in excess reacts with \(\mathrm{NH}_3\) to give an explosive compound \((C)\).
The compounds \(A, B\) and \(C\) are

1 \(A=\mathrm{MnO}_2, B=\mathrm{Cl}_2, C=\mathrm{NCl}_3\)
2 \(A=\mathrm{MnO}, B=\mathrm{Cl}_2, C=\mathrm{NH}_3 \mathrm{Cl}\)
3 \(A=\mathrm{Mn}_3 \mathrm{O}_4, B=\mathrm{Cl}_2, C=\mathrm{NCl}_3\)
4 \(A=\mathrm{MnO}_3, B=\mathrm{Cl}_2, C=\mathrm{NCl}_2\)
Karnataka CET 2016
CHEMISTRY(KCET)

285474 The electronic configuration of\(\mathrm{Gd}^{2+}\) is (at. no. of Gd is 64)

1 \([\mathrm{Xe}] 4 f^7\)
2 \([\mathrm{Xe}] 4 f^7 5 \mathrm{~d}^1\)
3 \([\mathrm{Xe}] 4 f^8\)
4 \([\mathrm{Xe}] 4 f^7 5 \mathrm{~d}^1 6 \mathrm{~s}^2\)
Karnataka CET 2015
CHEMISTRY(KCET)

285446 The transition element (\(5 \%\) ) present with lanthanoid metal in Misch metal is:

1 Mg
2 Fe
3 Zn
4 Co
Karnataka CET 2024
CHEMISTRY(KCET)

285447 Which of the following statements related to lanthanoids is incorrect?

1 Lanthanoids are silvery white soft metals
2 Samarium shows +2 oxidation state
3 \(\mathrm{Ce}^{+4}\) solutions are widely used as oxidising agents in titrimetric analysis
4 Colour of Lanthanoid ion in solution is due to d-d transition
Karnataka CET 2024
For More Updates join with Us
CHEMISTRY(KCET)

285473 \(\mathrm{MSO}_4 \xrightarrow{\mathrm{NH}_4 \mathrm{OH}} \mathrm{x} \downarrow \xrightarrow[\substack{\text { excess } \\ \text { white }}]{\mathrm{NH}_4 \mathrm{OH}} \mathrm{Y} \xrightarrow{\mathrm{H}_2 \mathrm{~S}} \mathrm{Z} \downarrow\)
Here M and Z are

1 \(\mathrm{Zn}, \mathrm{ZnS}\)
2 \(\mathrm{Al}, \mathrm{Al}_2 \mathrm{~S}_3\)
3 \(\mathrm{Cu}, \mathrm{ZnS}\)
4 \(\mathrm{Fe}, \mathrm{FeS}\)
Karnataka CET 2015
CHEMISTRY(KCET)

285471 When a brown compound of\(\mathrm{Mn}(A)\) is treated with HCl , it gives a gas \((B)\). The gas \((B)\) taken in excess reacts with \(\mathrm{NH}_3\) to give an explosive compound \((C)\).
The compounds \(A, B\) and \(C\) are

1 \(A=\mathrm{MnO}_2, B=\mathrm{Cl}_2, C=\mathrm{NCl}_3\)
2 \(A=\mathrm{MnO}, B=\mathrm{Cl}_2, C=\mathrm{NH}_3 \mathrm{Cl}\)
3 \(A=\mathrm{Mn}_3 \mathrm{O}_4, B=\mathrm{Cl}_2, C=\mathrm{NCl}_3\)
4 \(A=\mathrm{MnO}_3, B=\mathrm{Cl}_2, C=\mathrm{NCl}_2\)
Karnataka CET 2016
CHEMISTRY(KCET)

285474 The electronic configuration of\(\mathrm{Gd}^{2+}\) is (at. no. of Gd is 64)

1 \([\mathrm{Xe}] 4 f^7\)
2 \([\mathrm{Xe}] 4 f^7 5 \mathrm{~d}^1\)
3 \([\mathrm{Xe}] 4 f^8\)
4 \([\mathrm{Xe}] 4 f^7 5 \mathrm{~d}^1 6 \mathrm{~s}^2\)
Karnataka CET 2015
CHEMISTRY(KCET)

285446 The transition element (\(5 \%\) ) present with lanthanoid metal in Misch metal is:

1 Mg
2 Fe
3 Zn
4 Co
Karnataka CET 2024
CHEMISTRY(KCET)

285447 Which of the following statements related to lanthanoids is incorrect?

1 Lanthanoids are silvery white soft metals
2 Samarium shows +2 oxidation state
3 \(\mathrm{Ce}^{+4}\) solutions are widely used as oxidising agents in titrimetric analysis
4 Colour of Lanthanoid ion in solution is due to d-d transition
Karnataka CET 2024
NEET DIGITAL LIBRARY
CHEMISTRY(KCET)

285473 \(\mathrm{MSO}_4 \xrightarrow{\mathrm{NH}_4 \mathrm{OH}} \mathrm{x} \downarrow \xrightarrow[\substack{\text { excess } \\ \text { white }}]{\mathrm{NH}_4 \mathrm{OH}} \mathrm{Y} \xrightarrow{\mathrm{H}_2 \mathrm{~S}} \mathrm{Z} \downarrow\)
Here M and Z are

1 \(\mathrm{Zn}, \mathrm{ZnS}\)
2 \(\mathrm{Al}, \mathrm{Al}_2 \mathrm{~S}_3\)
3 \(\mathrm{Cu}, \mathrm{ZnS}\)
4 \(\mathrm{Fe}, \mathrm{FeS}\)
Karnataka CET 2015
CHEMISTRY(KCET)

285471 When a brown compound of\(\mathrm{Mn}(A)\) is treated with HCl , it gives a gas \((B)\). The gas \((B)\) taken in excess reacts with \(\mathrm{NH}_3\) to give an explosive compound \((C)\).
The compounds \(A, B\) and \(C\) are

1 \(A=\mathrm{MnO}_2, B=\mathrm{Cl}_2, C=\mathrm{NCl}_3\)
2 \(A=\mathrm{MnO}, B=\mathrm{Cl}_2, C=\mathrm{NH}_3 \mathrm{Cl}\)
3 \(A=\mathrm{Mn}_3 \mathrm{O}_4, B=\mathrm{Cl}_2, C=\mathrm{NCl}_3\)
4 \(A=\mathrm{MnO}_3, B=\mathrm{Cl}_2, C=\mathrm{NCl}_2\)
Karnataka CET 2016
CHEMISTRY(KCET)

285474 The electronic configuration of\(\mathrm{Gd}^{2+}\) is (at. no. of Gd is 64)

1 \([\mathrm{Xe}] 4 f^7\)
2 \([\mathrm{Xe}] 4 f^7 5 \mathrm{~d}^1\)
3 \([\mathrm{Xe}] 4 f^8\)
4 \([\mathrm{Xe}] 4 f^7 5 \mathrm{~d}^1 6 \mathrm{~s}^2\)
Karnataka CET 2015
CHEMISTRY(KCET)

285446 The transition element (\(5 \%\) ) present with lanthanoid metal in Misch metal is:

1 Mg
2 Fe
3 Zn
4 Co
Karnataka CET 2024
CHEMISTRY(KCET)

285447 Which of the following statements related to lanthanoids is incorrect?

1 Lanthanoids are silvery white soft metals
2 Samarium shows +2 oxidation state
3 \(\mathrm{Ce}^{+4}\) solutions are widely used as oxidising agents in titrimetric analysis
4 Colour of Lanthanoid ion in solution is due to d-d transition
Karnataka CET 2024