AP EAMCET (EAPCET) Chemistry Multiple Choice Questions (MCQs)

111. Which of the following is a characteristic property of transition metals?

a) High electronegativity

b) Low melting points

c) Formation of coloured ions

d) Poor conductivity

Answer: c) Formation of coloured ions

112. The electronic configuration of a d-block element is 3d^7 4s^2. Which of the following is true for this element?

a) It is in the second transition series.

b) It is in the first transition series.

c) It belongs to the f-block.

d) It is an actinoid.

Answer: a) It is in the second transition series.

113. Which of the following oxo-anions is associated with potassium permanganate?

a) MnO₄²⁻

b) MnO₄⁻

c) Cr₂O₇²⁻

d) CrO₄²⁻

Answer: b) MnO₄⁻

114. What is the oxidation state of chromium in potassium dichromate (K₂Cr₂O₇)?

a) +3

b) +6

c) +2

d) +1

Answer: b) +6

115. Which theory explains the formation of coordination compounds based on the hybridization of metal orbitals?

a) Crystal field theory

b) Ligand field theory

c) Valence bond theory

d) Molecular orbital theory

Answer: c) Valence bond theory

116. Which of the following is true about the lanthanoids?

a) They are located in the d-block of the periodic table.

b) They have similar electronic configurations.

c) They are part of the f-block elements.

d) They form colored compounds.

Answer: c) They are part of the f-block elements.

117. In the crystal field theory, the splitting of d-orbitals in an octahedral field results in how many different energy levels?

a) 1

b) 2

c) 3

d) 5

Answer: b) 2

118. Which of the following is an example of a coordination compound?

a) NaCl

b) [Cu(NH₃)₄]²⁺

c) K₂SO₄

d) CO₂

Answer: b) [Cu(NH₃)₄]²⁺

119. What type of isomerism is shown by the coordination compound [CoCl₃(NH₃)₃]?

a) Linkage isomerism

b) Geometrical isomerism

c) Optical isomerism

d) Ionization isomerism

Answer: b) Geometrical isomerism

120. Which of the following statements is true about the bonding in metal carbonyls?

a) It follows only crystal field theory.

b) The metal-carbon bond is purely ionic.

c) The bonding involves both σ-donor and π-acceptor interactions.

d) It only involves covalent bonding.

Answer: c) The bonding involves both σ-donor and π-acceptor interactions.