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

1

Which of the following species has two non-bonded electron pairs on the central atom?

A) TeCI₄ B) CIF₃ C) lCl₂ D) PCl₃

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Answer & Solution

Answer: Option B

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2

The spinels CoFe₂O₄ and FeFe₂O₄ respectively are

A) inverse and inverse B) inverse and normal C) normal and normal D) normal and inverse

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Answer & Solution

Answer: Option A

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3

The arrangement of sulphur in zinc blende and wurtzite structures, respectively are

A) hexagonal close packing and cubic close packing B) cubic close packing and hexagonal close packing C) simple cubic packing in both the structures D) hexagonal dose packing in both the structures

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Answer & Solution

Answer: Option B

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4

The point group of NSF₃ is

A) D_3d B) C_3h C) D_3h D) C_3v

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Answer & Solution

Answer: Option D

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5

According to MO theory for the atomic species C₂

A) bond order is zero and it is paramagnetic B) bond order is zero and it is diamagnetic C) bond order is two and it is paramagnetic D) bond order is two and it is diamagnetic

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Answer & Solution

Answer: Option D

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6

If the dipole moment of HCI is 1.08 D and the bond distance is 1.27 \[{\rm{\dot A}}\], the partial charge on hydrogen and chlorine, respectively are

A) +1.0 and -1.0 B) +0.85 and -0.85 C) +0.356 and -0.356 D) +0.178 and -0.178

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Answer & Solution

Answer: Option B

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7

The geometry around the central atom in CIF₄⁺ is

A) square planar B) square pyramidal C) octahedral D) trigonal bipyramidal

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Answer & Solution

Answer: Option D

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8

The highest occupied molecular orbital of HF is

A) bonding B) anti-bonding C) ionic D) non-bonding

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Answer & Solution

Answer: Option A

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9

The structures of N(CH₃)₃ and N(SiH₃)₃ respectively are

A) trigonal planar and pyramidal B) pyramidal and trigonal planar C) pyramidal and pyramidal D) trigonal planar and trigonal planar

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Answer & Solution

Answer: Option B

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10

According to VSEPR model, the shape of [XeOF₅]^- is

A) octahedral B) trigonal bipyramidal C) square pyramidal D) pentagonal monopyramidal

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Answer & Solution

Answer: Option D

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