Statement I: Cr2+ is a stronger reducing agent than Fe2+ .
Statement II:  Fe2+ is a stronger reducing agent than Cr2+ .

1. Both statements I and II are true.

2. Statement I is true and statement II is false.
3. Both statements I and II are false.
4. Statement I is false, statement II is true.

Subtopic:  d-Block Elements- Properties & Uses |
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Statement 1: Actinoid contraction is greater from element to element than lanthanoid contraction. 
Statement 2:  5f orbitals have a poorer shielding effect than 4f orbitals.

1. Statement 1 is true, statement 2 is false.
2. Statement 1 is false, statement 2 is true.
3. Both statements are false.
4. Both statements are true.
Subtopic:  Lanthanoid & Actinoids Contraction |
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Statement 1: Highest oxidation state of a metal is exhibited in its oxide or fluoride only.
Statement 2: Both oxide and fluoride ions are able to oxidise metals .
1. Statement 1 is true, statement 2 is false.
2. Statement 1 is false, statement 2 is true.
3. Both statements are true.
4. Both statements are false.
Subtopic:  d-Block Elements- Properties & Uses |
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Statement 1: Silver atom has completely filled d orbitals (4d10) in its ground state.
Statement 2:  Silver is not a transition element.

1. Statement 1 is true , statement 2 is false.
2. Statement 1 is false, statement 1 is true.
3. Both statements are true.
4. Both statements are false.
Subtopic:  d-Block Elements- Properties & Uses |
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Assertion (A): \(Eu^{2+}\) behaves as a reducing agent 
Reason (R): +3 oxidation state of lanthanoids are more common 

1. Both assertion and reason are true and the reason is the correct explanation of the assertion
2. Both assertion and reason are true but the reason is not the correct explanation of the assertion
3. Assertion is true but reason is false
4. Both assertion and reason are false

Subtopic:  f-Block Elements- Properties & Uses |
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Assertion(A): Ni++ has two unpaired electrons. 
Reason(R): Electrons are removed from 3d but not from 4s.

1. Both A and R are true and R is the correct explanation of A.
2. Both A and R are true but R is not the correct explanation of A.
3. A is true and R is false.
4. A and R both are false.

 
Subtopic:  d-Block Elements- Properties & Uses |
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Assertion( A): Cr2+ acts as a reducing agent and Mn3+ acts as an oxidising agent when both have d4 configuration.

Reason: The maximum oxidation state Cr show is +5 and Mn shows is +7.


1. Both assertion and reason are true, and the reason is the correct explanation of the assertion.

2. Both assertion and reason are true, but the reason is not the correct explanation of the assertion.

3. Assertion is true but the reason is false.

4. Assertion is false but the reason is true.

Subtopic:  d-Block Elements- Properties & Uses |
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The graph for M2+/M (standard electrode potential) is plotted for 3 d series elements below:

The element X is

1. Mn

2. Fe

3. Cu

4. Co

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Consider the graph between enthalpies of atomization of transition elements vs atomic numbers:

The curve representing enthalpies of atomization for 3d series is 

1. z

2. y

3. x

4. Cannot predict from the graph

Subtopic:  d-Block Elements- Properties & Uses |
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Consider the following graph.

Based on the graph above, it can be concluded that the element with a melting point higher than 3000 K will be:

1. Y

2. X

3. Z

4. None of the above

Subtopic:  d-Block Elements- Properties & Uses |
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & Biology