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

321453 Many transition metals form interstitial compounds. The characteristics of these interstitial compounds are
I. They have low melting points
II. They are very hard
III. They retain metallic conductivity
IV. They are chemically more reactive than the pure metals. Identify the correct option

1 II, III only correct
2 I, III only correct
3 II, IV only correct
4 IV only correct
CHXII08:THE D- & F-BLOCK ELEMENTS

321454 Identify the incorrect statement

1 The transition metals and their compounds are known for their catalytic activity due to their ability to adopt multiple oxidation states and to form complexes
2 Interstitial compounds are those that are formed when small atom like \(\mathrm{\mathrm{H}, \mathrm{C}}\) or \(\mathrm{\mathrm{N}}\) are trapped inside the crystal lattices of metals
3 The oxidation states of chromium in \(\mathrm{\mathrm{CrO}_{4}^{2-}}\) and \(\mathrm{\mathrm{Cr}_{2} \mathrm{O}_{7}^{2^{-}}}\)are not the same
4 \(\mathrm{\mathrm{Cr}^{2+}\left(d^{4}\right)}\) is a stronger reducing agent than \(\mathrm{\mathrm{Fe}^{2+}\left(d^{6}\right)}\) in water
NEET - 2020
CHXII08:THE D- & F-BLOCK ELEMENTS

321455 Assertion :
Transition metals form a large number of interstitial compounds.
Reason :
They have high melting point and boiling point.

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

321456 Which of the following is incorrect about interstitial compounds?

1 They have higher melting points than the pure metal
2 They are chemically reactive
3 They retain metallic conductivity
4 They are much harder than the pure metal
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CHXII08:THE D- & F-BLOCK ELEMENTS

321453 Many transition metals form interstitial compounds. The characteristics of these interstitial compounds are
I. They have low melting points
II. They are very hard
III. They retain metallic conductivity
IV. They are chemically more reactive than the pure metals. Identify the correct option

1 II, III only correct
2 I, III only correct
3 II, IV only correct
4 IV only correct
CHXII08:THE D- & F-BLOCK ELEMENTS

321454 Identify the incorrect statement

1 The transition metals and their compounds are known for their catalytic activity due to their ability to adopt multiple oxidation states and to form complexes
2 Interstitial compounds are those that are formed when small atom like \(\mathrm{\mathrm{H}, \mathrm{C}}\) or \(\mathrm{\mathrm{N}}\) are trapped inside the crystal lattices of metals
3 The oxidation states of chromium in \(\mathrm{\mathrm{CrO}_{4}^{2-}}\) and \(\mathrm{\mathrm{Cr}_{2} \mathrm{O}_{7}^{2^{-}}}\)are not the same
4 \(\mathrm{\mathrm{Cr}^{2+}\left(d^{4}\right)}\) is a stronger reducing agent than \(\mathrm{\mathrm{Fe}^{2+}\left(d^{6}\right)}\) in water
NEET - 2020
CHXII08:THE D- & F-BLOCK ELEMENTS

321455 Assertion :
Transition metals form a large number of interstitial compounds.
Reason :
They have high melting point and boiling point.

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

321456 Which of the following is incorrect about interstitial compounds?

1 They have higher melting points than the pure metal
2 They are chemically reactive
3 They retain metallic conductivity
4 They are much harder than the pure metal
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CHXII08:THE D- & F-BLOCK ELEMENTS

321453 Many transition metals form interstitial compounds. The characteristics of these interstitial compounds are
I. They have low melting points
II. They are very hard
III. They retain metallic conductivity
IV. They are chemically more reactive than the pure metals. Identify the correct option

1 II, III only correct
2 I, III only correct
3 II, IV only correct
4 IV only correct
CHXII08:THE D- & F-BLOCK ELEMENTS

321454 Identify the incorrect statement

1 The transition metals and their compounds are known for their catalytic activity due to their ability to adopt multiple oxidation states and to form complexes
2 Interstitial compounds are those that are formed when small atom like \(\mathrm{\mathrm{H}, \mathrm{C}}\) or \(\mathrm{\mathrm{N}}\) are trapped inside the crystal lattices of metals
3 The oxidation states of chromium in \(\mathrm{\mathrm{CrO}_{4}^{2-}}\) and \(\mathrm{\mathrm{Cr}_{2} \mathrm{O}_{7}^{2^{-}}}\)are not the same
4 \(\mathrm{\mathrm{Cr}^{2+}\left(d^{4}\right)}\) is a stronger reducing agent than \(\mathrm{\mathrm{Fe}^{2+}\left(d^{6}\right)}\) in water
NEET - 2020
CHXII08:THE D- & F-BLOCK ELEMENTS

321455 Assertion :
Transition metals form a large number of interstitial compounds.
Reason :
They have high melting point and boiling point.

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

321456 Which of the following is incorrect about interstitial compounds?

1 They have higher melting points than the pure metal
2 They are chemically reactive
3 They retain metallic conductivity
4 They are much harder than the pure metal
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CHXII08:THE D- & F-BLOCK ELEMENTS

321453 Many transition metals form interstitial compounds. The characteristics of these interstitial compounds are
I. They have low melting points
II. They are very hard
III. They retain metallic conductivity
IV. They are chemically more reactive than the pure metals. Identify the correct option

1 II, III only correct
2 I, III only correct
3 II, IV only correct
4 IV only correct
CHXII08:THE D- & F-BLOCK ELEMENTS

321454 Identify the incorrect statement

1 The transition metals and their compounds are known for their catalytic activity due to their ability to adopt multiple oxidation states and to form complexes
2 Interstitial compounds are those that are formed when small atom like \(\mathrm{\mathrm{H}, \mathrm{C}}\) or \(\mathrm{\mathrm{N}}\) are trapped inside the crystal lattices of metals
3 The oxidation states of chromium in \(\mathrm{\mathrm{CrO}_{4}^{2-}}\) and \(\mathrm{\mathrm{Cr}_{2} \mathrm{O}_{7}^{2^{-}}}\)are not the same
4 \(\mathrm{\mathrm{Cr}^{2+}\left(d^{4}\right)}\) is a stronger reducing agent than \(\mathrm{\mathrm{Fe}^{2+}\left(d^{6}\right)}\) in water
NEET - 2020
CHXII08:THE D- & F-BLOCK ELEMENTS

321455 Assertion :
Transition metals form a large number of interstitial compounds.
Reason :
They have high melting point and boiling point.

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

321456 Which of the following is incorrect about interstitial compounds?

1 They have higher melting points than the pure metal
2 They are chemically reactive
3 They retain metallic conductivity
4 They are much harder than the pure metal
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