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MCQ on d and f block elements: The d and f block elements, also known as transition metals and inner transition metals, play a crucial role in understanding the periodic table and the behavior of various chemical reactions. These elements, characterized by their unique electron configurations, exhibit a wide range of oxidation states and complex formation capabilities. Their diverse properties make them essential in various applications, from industrial processes to biological systems. For NEET aspirants, mastering the concepts related to d and f block elements is vital, as these topics frequently appear in examinations. This collection of multiple-choice questions NEET (MCQs) will help reinforce your understanding and prepare you effectively for the challenges ahead.
D and F Block Elements for NEET
To excel in the NEET exam, a comprehensive understanding of d and f-Block Elements is crucial, as they are significant topics in the NEET Chemistry syllabus. Focus on practicing multiple-choice questions (MCQs) related to these elements to enhance your knowledge of their properties, reactions, and practical applications.
MCQs on d and f-Block Elements often evaluate your grasp of periodic trends, oxidation states, and the distinctive features of transition and inner-transition metals. Regular practice will boost your problem-solving skills and familiarize you with the NEET exam format, giving you a competitive edge. Prioritize these areas to ensure success in your NEET preparation.
Also Read: NEET Biology MCQ
MCQ on D and F Block Elements for NEET Chemistry
1. Which of the following is a characteristic property of transition metals?
a) High electronegativity
b) Formation of colored compounds
c) Low melting points
d) Non-magnetic properties
Answer: b) Formation of colored compounds
2. Which element belongs to the f-block of the periodic table?
a) Scandium (Sc)
b) Titanium (Ti)
c) Cerium (Ce)
d) Iron (Fe)
Answer: c) Cerium (Ce)
3. What is the oxidation state of manganese in KMnO₄?
a) +2
b) +4
c) +6
d) +7
Answer: d) +7
4. Which of the following d-block elements has the highest melting point?
a) Iron (Fe)
b) Manganese (Mn)
c) Chromium (Cr)
d) Tungsten (W)
Answer: d) Tungsten (W)
5. The element that is known for forming the +3 oxidation state predominantly is:
a) Iron (Fe)
b) Aluminum (Al)
c) Cobalt (Co)
d) Chromium (Cr)
Answer: b) Aluminum (Al)
6. Which of the following is not a property of lanthanides?
a) High density
b) Radioactivity
c) Low melting points
d) Formation of +3 oxidation state
Answer: c) Low melting points
7. Which of the following transition metals has an incomplete d-subshell in its elemental form?
a) Zinc (Zn)
b) Copper (Cu)
c) Scandium (Sc)
d) Iron (Fe)
Answer: d) Iron (Fe)
8. What is the general electron configuration for the d-block elements?
a) ns²
b) (n-1)d¹
c) ns²(n-1)d¹⁴
d) ns²(n-1)d¹⁵
Answer: c) ns²(n-1)d¹⁴
9. Which of the following is a common use of titanium?
a) As a catalyst in organic reactions
b) In making aircraft
c) In battery electrodes
d) As a neutron absorber
Answer: b) In making aircraft
10. The primary oxidation state of chromium in CrO₄²⁻ is:
a) +2
b) +3
c) +6
d) +7
Answer: c) +6
Also Check: Periodic Classification of Elements MCQ for NEET
11. Which of the following elements is considered a transition metal?
a) Radium (Ra)
b) Zinc (Zn)
c) Calcium (Ca)
d) Bismuth (Bi)
Answer: b) Zinc (Zn)
12. Lanthanides are primarily characterized by which electron configuration?
a) 4f¹
b) 5d¹
c) 4f²
d) 5f¹
Answer: a) 4f¹
13. Which of the following is an actinide?
a) Thorium (Th)
b) Plutonium (Pu)
c) Uranium (U)
d) All of the above
Answer: d) All of the above
14. The magnetic behavior of d-block elements is due to:
a) The presence of unpaired electrons
b) The absence of f-orbitals
c) The complete filling of d-orbitals
d) The presence of p-orbitals
Answer: a) The presence of unpaired electrons
15. Which of the following ions has a 3+ charge?
a) Fe²⁺
b) Cu⁺
c) Al³⁺
d) Zn²⁺
Answer: c) Al³⁺
16. Which of the following d-block elements is known for its catalytic properties?
a) Gold (Au)
b) Silver (Ag)
c) Platinum (Pt)
d) Mercury (Hg)
Answer: c) Platinum (Pt)
17. What is the common oxidation state of iron in Fe₂O₃?
a) +2
b) +3
c) +4
d) +6
Answer: b) +3
18. Which of the following elements has the electron configuration [Xe] 6s² 4f¹⁴ 5d¹⁰?
a) Gold (Au)
b) Mercury (Hg)
c) Lead (Pb)
d) Copernicium (Cn)
Answer: d) Copernicium (Cn)
19. The term ‘transition elements’ refers to:
a) The s-block elements
b) Elements with partially filled d-orbitals
c) Non-metals
d) Metalloids
Answer: b) Elements with partially filled d-orbitals
20. Which of the following is a property of actinides?
a) They are all radioactive
b) They are non-metallic
c) They have low atomic numbers
d) They exhibit high electronegativity
Answer: a) They are all radioactive
21. Which of the following transition metals shows the highest oxidation state in its compounds?
a) Chromium
b) Manganese
c) Iron
d) Cobalt
Answer: b) Manganese
22. The stability of the highest oxidation state of transition metals generally decreases across the period. This is because:
a) Increase in nuclear charge
b) Decrease in atomic size
c) Increase in ionization energy
d) All of the above
Answer: d) All of the above
23. Which of the following lanthanides is known to exhibit +4 oxidation state?
a) Cerium
b) Europium
c) Neodymium
d) Ytterbium
Answer: a) Cerium
24. The magnetic moment of a transition metal ion in a high-spin d⁵ configuration is:
a) 0 BM
b) 5.92 BM
c) 2.83 BM
d) 4.90 BM
Answer: b) 5.92 BM
25. Which of the following actinides does not form any compounds in +4 oxidation state?
a) Thorium
b) Uranium
c) Neptunium
d) Californium
Answer: d) Californium
26. Which among the following d-block elements shows an anomalous electron configuration due to stability of half-filled subshells?
a) Iron
b) Copper
c) Chromium
d) Zinc
Answer: c) Chromium
27. The ability of lanthanides to form complexes is lower than that of transition elements. This is due to:
a) Lanthanide contraction
b) Poor shielding of f-orbitals
c) Higher charge-to-radius ratio
d) All of the above
Answer: d) All of the above
28. Which of the following complexes has the highest crystal field splitting energy (Δ₀)?
a) [Cr(CN)₆]³⁻
b) [Fe(CN)₆]³⁻
c) [Co(H₂O)₆]²⁺
d) [Mn(H₂O)₆]³⁺
Answer: a) [Cr(CN)₆]³⁻
29. In the extraction of copper from copper pyrites, the role of silica in the smelting process is to:
a) Oxidize FeS to FeO
b) Act as a reducing agent
c) Remove iron as slag
d) Convert Cu₂S to Cu
Answer: c) Remove iron as slag
30. Which one of the following lanthanides does not show +3 oxidation state?
a) Promethium
b) Samarium
c) Cerium
d) Europium
Answer: d) Europium
