Ion that gives color with water is:

1. Cu+

2. Cr3+

3. Na+

4. None of the above.

Subtopic:  d-Block Elements- Properties & Uses |
 71%
From NCERT
AIPMT - 1998
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Maximum oxidation state is shown by:
1.  La
2.  Gd
3.  Eu
4.  Am

Subtopic:  f-Block Elements- Properties & Uses |
From NCERT
AIPMT - 1998
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Which of the following is a coloured and paramagnetic compound?

1. CuF2

2. K2Cr2O7

3. KMnO4

4. K4[Fe(CN)6]

Subtopic:  d-Block Elements- Properties & Uses |
From NCERT
AIPMT - 1999
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Compound 'A' in acidic medium does not give ppt with H2S but in NH4OH medium gives a ppt comp. 'A' is:

1. FeCl3

2. AlCl3

3. ZnCl2

4. SnCl2

Subtopic:  d-Block Elements- Properties & Uses |
AIPMT - 1999
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\(FeCr_{2}O_{4} \) when reacts with Na2CO3 gives the product: 

1. Na2CrO4

2. Na2Cr2O7

3. Fe3O4

4. FeO

Subtopic:  d-Block Elements- Properties & Uses |
 59%
From NCERT
AIPMT - 1999
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Colourless ion among the following is:

1. Cr+4 2. Sc+3
3. Ti+3 4. V+3
Subtopic:  d-Block Elements- Properties & Uses |
 84%
From NCERT
AIPMT - 2000
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An element among the following that exhibits the maximum oxidation state is:

1. Cr

2. Mn

3. Fe

4. V

Subtopic:  d-Block Elements- Properties & Uses |
 91%
From NCERT
AIPMT - 2000
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An incorrect statement among the following is :

1. La(OH)3 is less basic than Lu(OH)3
2. In Lanthanide series, ionic radius of  Ln+3 ions decreases.
3. La is an element of a transition and not of Lanthanide series.
4. The atomic radius of Zr and Hf are the same because of Lanthanide contraction.
Subtopic:  f-Block Elements- Properties & Uses |
 73%
From NCERT
AIPMT - 2001
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The general electronic configuration of lanthanoids is:

1. (n – 2) f 1–14 (n – 1) s2 p6 d0–1 ns2

2. (n – 2) f 10–14 (n – 1) d0–1 ns2

3. (n – 2) f 0–14 (n – 1) d10 ns2

4. (n – 2) d0–1 (n – 1) f 1–14 ns2

Subtopic:  f-Block Elements- Properties & Uses |
From NCERT
AIPMT - 2002
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An element among the following that shows the maximum number of oxidation states is:

1. Cr

2. Fe

3. Mn

4. V

Subtopic:  d-Block Elements- Properties & Uses |
 94%
From NCERT
AIPMT - 2002
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