Chemical Bonding and Molecular Structure MCQs Question and Answer in Engineering Chemistry

31

The shape of the molecule XeO₂F₂ is

A) distorted tetrahedral B) square planar C) trigonal bipyramidal D) tetrahedral

Discuss

Answer & Solution

Answer: Option C

No explanation is given for this question. Let's Discuss on Board

32

The number of manganese ions in tetrahedral and octahedral sites, respectively in Mn₃O₄ are

A) one Mn²⁺ and two Mn³⁺ B) one Mn³⁺ and two Mn²⁺ C) two Mn³⁺ and one Mn²⁺ D) two Mn²⁺ and one Mn³⁺

Discuss

Answer & Solution

Answer: Option A

No explanation is given for this question. Let's Discuss on Board

33

NaCI is crystallized by slow evaporation of its aqueous solution at room temperature. The correct statement is

A) the crystals will be non-stoichiometric B) the crystals should have Frenkel defects C) the percentage of defects in the crystals will depend on the concentration of the solution and its rate of evaporation D) the nature of defects will depend upon the concentration of the solution and its rate of evaporation

Discuss

Answer & Solution

Answer: Option C

No explanation is given for this question. Let's Discuss on Board

34

Among the following molecules, the shortest bond length is to be found in

A) C₂ B) N₂ C) O₂ D) F₂

Discuss

Answer & Solution

Answer: Option B

No explanation is given for this question. Let's Discuss on Board

35

The ground state term for V³⁺ ion is

A) ³F B) ²F C) ³P D) ²D

Discuss

Answer & Solution

Answer: Option A

No explanation is given for this question. Let's Discuss on Board

36

The coordination number of the Ba²⁺ ions in barium fluoride is 8. The coordination number of the fluoride ion is

A) 8 B) 4 C) 1 D) 2

Discuss

Answer & Solution

Answer: Option B

No explanation is given for this question. Let's Discuss on Board

37

The compound (SiH₃)₃N is expected to be

A) pyramidal and more basic than (CH₃)₃N B) planar and less basic than (CH₃)₃N C) pyramidal and less basic than (CH₃)₃N D) planar and more basic than (CH₃)₃N

Discuss

Answer & Solution

Answer: Option B

No explanation is given for this question. Let's Discuss on Board

38

The atomic radius (in cm) of an element with a body centred cubic unit cell of volume 75.8 cm³ mol^-1, molecular weight 137.3 and density 3.62 g cm^-3 is

A) 1.5 × 10^-8 B) 1.6 × 10^-8 C) 2.0 × 10^-8 D) 2.2 × 10^-8

Discuss

Answer & Solution

Answer: Option B

No explanation is given for this question. Let's Discuss on Board

39

Among the compounds Fe₃O₄, NiFe₂O₄ and Mn₃O₄

A) NiFe₂O₄ and Mn₃O₄ are normal spinels B) Fe₃O₄ and Mn₃O₄ are normal spinels C) Fe₃O₄ and Mn₃O₄ are inverse spinels D) Fe₃O₄ and NiFe₂O₄ are inverse spinels

Discuss

Answer & Solution

Answer: Option D

No explanation is given for this question. Let's Discuss on Board

40

The structures of O₃ and $${\text{N}}_3^ - $$ are

A) linear and bent respectively B) both linear C) both bent D) bent and linear respectively

Discuss

Answer & Solution

Answer: Option D

No explanation is given for this question. Let's Discuss on Board