Free MCQs & Online Quiz Practice for Exams

Q: The diamagnetic ion is:

A) Ni²⁺

B) Cr³⁺

C) Mn²⁺

D) Cu⁺

Q: Potassium ferrocyanide is a:

A) Normal salt

B) Mixed salt

C) Double salt

D) Complex salt

Q: The co-ordination compound [CuCl₄]²⁻ exists in the shape of:

A) Tetrahedral

B) Octahedral

C) Square planar

D) Rhombic

Q: The oxidation state of chromium in CrO₂Cl₂ is:

A) +2

B) +3

C) +4

D) +6

Q: [BeF₄]²⁻ is an example of a:

A) Square planar

B) Tetrahedral complexes

C) Bent structure

D) Octahedral

Q: Which of the following is a typical transition element?

A) Zn

B) Cd

C) Ra

D) Co

Q: The paramagnetic nature of a substance depends on:

A) The number of electrons in the outermost orbit

B) The number of electrons that are easily ejected

C) The number of unpaired electrons

D) The number of lone pairs of electrons

Q: Ligands are:

A) Electron-pair donors

B) Electron-pair acceptors

C) Always neutral

D) Both donor and then acceptor

Q: Which one is not ferromagnetic?

A) Fe

B) Co

C) Sb

D) Ni

Q: The coordination number of iron in [Fe(CN)₆]⁴⁻ is:

A) 9

B) 3

C) 4

D) 6

Q: Select the ligand which is bidentate:

A) H₂O

B) NH₃

C) CO

D) C₂O₄²⁻

Q: Cu²⁺ salt solution is blue in colour due to transition of electron from:

A) s → p orbital

B) d → d orbital

C) p → d orbital

D) p → p orbital

Q: Electronegativity of Be is approximately equal to that of:

A) Al

B) Mg

C) B

D) Ar

Q: The elements which are most abundant in Earth's crust are:

A) Si and Al

B) Ca and Mg

C) B and Ar

D) B and Ai

Q: Carbonates of Li are not stable like those of sodium due to:

A) Low electronegativity

B) Low electropositivity

C) High charge density of Li⁺

D) Low charge density of Li⁺

Q: Which one of the following metal sulphates is not soluble in water:

A) Na₂SO₄

B) K₂SO₄

C) BaSO₄

D) ZnSO₄

Q: Which of the following alkali metals forms only the normal oxide with O₂?

A) Li

B) K

C) Na

D) Rb

Q: Strongest reducing agent among the halogens is:

A) Cl₂

B) F₂

C) Br₂

D) I₂

Q: Which of the following has the lowest electron affinity?

A) F

B) I

C) Br

D) Cl

Q: Which of the following halides has the highest melting point?

A) NaCl

B) NaBr

C) NaF

D) NaI