Class 12 Chemistry Chapter 8 The D and F Block MCQs Chemistry

Class 12 Chemistry Chapter 8 The D and F Block MCQs Chemistry

Class 12 Chemistry Chapter 8 The D and F Block MCQs

These Class 12 Chemistry Chapter 8 The D and F Block MCQs are prepared by our Chemistry Expert. By practicing following MCQs, students will be able to quickly revise all the concepts of the Class 12 Chemistry Chapter 8 The D and F Block MCQs. Additionally, Class 12 Chemistry Chapter 8 The D and F Block MCQs will be helpful for JEE And NEET Aspirants.

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Class 12 Chemistry Chapter 8 The D and F Block MCQs (SET A)

1) Which of the following is the stable electronic configuration of Fe3+ ion?
(1) 3d64s0
(2) 3d54s0
(3) 3d64s2
(4) 3d44s2
Answer: 3d54s0

2) The group numbers of transition elements?
(1) 1 to 10
(2) 1 to 9
(3) 3 to 11
(4) 3 to 12
Answer: 3 to 11

3) The following belongs to the d-block but it is not a transition element:
(1) Mn
(2) Fe
(3) Zn
(4) Cr
Answer: Zn

4) The correct order of the number of the unpaired electron is:
(1) Cu2+ > Ni2+ > Cr3+ > Fe3+
(2) Ni2+ > Cu2+ > Fe3+ > Cr3+
(3) Fe3+ > Cr3+ > Ni2+ > Cu2+
(4) Cr3+ > Fe3+ > Ni2+ > Cu2+
Answer: Fe3+ > Cr3+ > Ni2+ > Cu2+

5) In which one of the following pairs of metals have the same number of unpaired electrons?
(1) Cr, Cu
(2) Mn, Zn
(3) Sc, Zn
(4) Sc, Cu
Answer: Sc, Cu

6) Transition elements belong to
(1) s-block
(2) p-block
(3) d-block
(4) f-block
Answer: d-block

Class 12 Chemistry Chapter 8 The D and F Block MCQs (SET B)

1) The number of unpaired electrons in Fe3+ (Z = 26) are
(1) 4
(2) 5
(3) 6
(4) 3
Answer: 5

2) The most abundant transition metal belongs to
(1) 3d series
(2) 4d series
(3) 5d series
(4) 6d serious
Answer: 3d series

3) Anomalous electronic configuration in the 3d series
are of
(1) Cr and Fe
(2) Cu and Zn
(3) Fe and Cu
(4) Cr and Cu
Answer: Cr and Cu

4) The transition element with the lowest atomic number is
(1) Scandium
(2) Titanium
(3) Zinc
(4) Lanthanum
Answer: Scandium

5) Maximum oxidation state is shown by
(1) Os
(2) Mn
(3) Cr
(4) Co
Answer: Os

6) Which of the following element exhibits the maximum oxidation state?
(1) Mn
(2) Co
(3) Fe
(4) Zn
Answer: Mn

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Class 12 Chemistry Chapter 8 The D and F Block MCQs (SET C)

1) The highest oxidation state exhibited by transition metals is:
(1) +7
(2) +8
(3) +6
(4) +5
Answer: +8

2) Only one oxidation state is possible with:
(1) Cu
(2) Zn
(3) Fe
(4) Mn
Answer: Zn

3) The oxidation state of +1 is possible with:
(1) Cu and Cr
(2) Cu and Zn
(3) Cr and Zn
(4) Mn and Zn
Answer: Cu and Cr

4) Electronic configuration of a transition element X in +3 oxidation state is [Ar] 3d5. What is its atomic number?
(1) 25
(2) 26
(3) 27
(4) 24
Answer: 26

5) For which one of the following pairs, do both exhibits the same highest oxidation state?
(1) Ti, Ni
(2) Ti, Cu
(3) Cr, Cu
(4) Sc, Zn
Answer: Ti, Ni

6) Which of the following has a magnetic moment value of 5.9?
(1) Fe2+
(2) Fe3+
(3) Ni2+
(4) Cu2+
Answer: Fe3+

Class 12 Chemistry Chapter 8 The D and F Block MCQs (SET D)

1) Transition elements form alloys easily because they have
(1) Same atomic number
(2) Same electronic configuration
(3) Nearly the same atomic size
(4) None of the above
Answer: Nearly the same atomic size

2) The property which is not characteristic of transition metals is
(1) variable oxidation states
(2) tendency to form complexes
(3) formation of colored compounds
(4) natural radioactivity
Answer: natural radioactivity

3) Fe3+ ion is more stable than Fe2+ ion because
(1) more the charge on the atom, the less is its stability
(2) configuration of Fe2+ is 3d6 while Fe3+ is 3d5
(3) Fe2+ has a larger size than Fe3+
(4) Fe3+ ions are colored and hence more stable
Answer: configuration of Fe2+ is 3d6 while Fe3+ is 3d5

4) Maximum oxidation state is shown by
(1) Os
(2) Mn
(3) Co
(4) Cr
Answer: Os

5) The lanthanoid contraction relates to
(1) Atomic radii
(2) Atomic as well as M3+ radii
(3) Valence electrons
(4) Oxidation states
Answer: Atomic as well as M3+ radii

6) Actinides
(1) have variable valency
(2) include 12 elements
(3) are all synthetic elements
(4) have only short-lived isotopes
Answer: have variable valency

Class 12 Chemistry Chapter 8 The D and F Block MCQs (SET E)

1) The properties of Zr and Hf are similar because
(1) Both belong to d-block
(2) Both belong to the same group of Periodic Table
(3) Both have similar radii
(4) Both have the same number of electrons
Answer: Both have similar radii

2) Lanthanoids and actinoids resemble:
(1) Electronic configuration
(2) Oxidation state
(3) Ionization energy
(4) Formation of complex
Answer: Electronic configuration

3) Incorrect statement is
(1) Atomic radii of Zr and Hf are the same because of lanthanoid contraction
(2) Zn and Hg do not show variable valency
(3) Across the lanthanides series, the basicity of lanthanide hydroxides decreases
(4) Protactinium is a transuranic element
Answer: Protactinium is a transuranic element

4) The outer electronic configuration of Gd (At. No. 64) is
(1) 4f 3 5d5 6s2
(2) 4f 8 5d0 6s2
(3) 4f 4 5d4 6s2
(4) 4f 7 5d1 6s2
Answer: 4f 7 5d1 6s2

5) Lanthanum is grouped with f-block elements because
(1) It has partially filled f-orbitals
(2) It has both partially filled f and d-orbitals
(3) The properties of lanthanum are very similar to the elements of 4f-block
(4) It is just before Ce in the Periodic Table
Answer: The properties of lanthanum are very similar to the elements of 4f-block

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