Bonding And Molecular Structure Multiple Choice Questions

Bonding And Molecular Structure MCQs With Answers

Question 1. Which among the following contains both covalent and ionic bonds?

1. CCl₄
2. CaCl₂
3. NH₄Cl
4. NaCl

Answer: 3. NH₄Cl

Question 2. Which of the following contains coordinate as well as covalent bonds?

1. NH⁺₄
2. PH₃
3. CHCl₃
4. PCI₅

Answer: 1. NH⁺₄

“Bonding and molecular structure multiple choice questions with answers”

Question 3. The numbers of sigma (σ) and pi (π) bonds in 2, 3-butadiene (CH₂=CH—CH=CH₂) are

1. 3σ and 2π
2. 9σ and 2π
3. 5σ and 2π
4. 2σ and 5π

Answer: 2. 9a and 2n

Question 4. In which of the following is the central atom sp³ hybridised?

1. PCl₃
2. SO₃
3. BF₃
4. BrF₃

Answer: 1. PCl₃

Question 5. Which among the following has the lowest dipole moment?

1. HF
2. HCl
3. HBr
4. HI

Answer: 4. HI

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Question 6. The C—C bond distance is the longest in

1. C₂H₄
2. C₂H₂
3. C₂H₆
4. C₆H₆

Answer: 3. C₂H₆

Question 7. The dipole moment of BeF₂ is

1. Very low
2. Zero
3. Very high
4. Variable

Answer: 2. Zero

Question 8. The carbon atom in the ethyne molecule has the following hybridisation:

1. sp³
2. sp²
3. sp
4. None of these

Answer: 3. sp

Question 9. The nitrogen molecule has

1. 1σ and 1π bond
2. 2σ and 2π bonds
3. 1σ bond
4. 1σ and 2π bonds

Answer: 4. 1σ and 2π bonds

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Question 10. Which of the following does not have any dipole moment?

1. NH₃
2. CCl₄
3. H₂O
4. CHCl₃

Answer: 2. CCl₄

MCQs on Chemical Bonding and Molecular Structure

Question 11. Which among the following lacks hydrogen bonding?

1. H₂S
2. C₂H₅OH
3. HF
4. Ammonia

Answer: 1. H2S

Question 12. Which of the following are isostructural?

1. BF₃ And NH₃
2. CO₂ and H₂O
3. PF₅ and BrF₅
4. CCI₄ and NH₄⁺

Answer: 4. CCI and NH₄⁺

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Question 13. Which of the following hybridisations leads to bonds of unequal length?

1. sp²
2. sp³d²
3. sp³d
4. sp³

Answer: 3. sp³d

Question 14. In which of the following is the octet rule violated?

1. H₃O⁺
2. NaCl
3. AICI₃
4. HCl

Answer: 3. AICI₃

Question 15. In which of these is the octet rule followed?

1. XeF₂
2. NO
3. BeH₂
4. MgCl₂

Answer: 4. MgCl₂

Question 16. How many electrons are present in the NH₄^– ion?

1. 10
2. 11
3. 9
4. 12

Answer: 1. 10

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Question 17. Which bond among the following is the least ionic?

1. P-F
2. S-F
3. Cl-F
4. F-F

Answer: 4. F-F

Question 18. A bond angle of 120° is associated with

1. sp hybridization
2. sp² hybridisation
3. sp³ hybridisation
4. sp³d² hybridisation

Answer: 2. sp² hybridisation

Question 19. Which hybridization leads to an octahedral shape?

1. sp³
2. sp³d
3. sp³d²
4. sp²d

Answer: 3. sp³d²

Question 20. The bond order in the hydrogen molecule is

1. 1/2
2. 3/2
3. zero
4. 0

Answer: 4. 0

Practice MCQs On Bonding Theories And Molecular Shapes

Question 21. Which of the following orbitals has the highest energy?

1. \(\sigma^{\circ}(1 \mathrm{~s})
2. [latex]\sigma\left(2 \mathrm{p}_x\right)\)
3. \(\sigma(2 s)\)
4. \(\pi^*\left(2 p_y\right)\)

Answer: 4. \(\pi^*\left(2 p_y\right)\)

Question 22. Which of the following is not paramagnetic?

1. \(\mathrm{N}_2^{+}\)
2. \(\mathrm{Li}_2\)
3. \(\mathrm{O}_2\)
4. \(\mathrm{H}_2^{+}\)

Answer: 2. \(\mathrm{Li}_2\)

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Question 23. Among the following pairs, which species have the same bond order?

1. B₂ and C₂
2. H₂ and O₂
3. H₂ and He₂
4. \(\mathrm{N}_2^{-} \text {and }\mathrm{O}_2^{+}\)

Answer: 4. \(\mathrm{N}_2^{-} \text {and }\mathrm{O}_2^{+}\)

Question 24. In which of the following is C*sp³ hybridized?

1. HC*OOH
2. HC*HO
3. (CH₃)₃C*OH
4. CH₃C*HO

Answer: 3. (CH₃)₃C*OH

Question 25. Which has a maximum number of sp hybridised carbon atoms?

1. CO₂
2. CH=C= CH—CN
3. HC≡C-CH₂=C=C=CH₂
4. HC≡C—CN

Answer: 4. HC=C—CN

Question 26. Among LiCl, BeCl₂, BCl₃ and CCl₄, the covalent character varies as

1. LiCl < BeCl₂ < BCl₃ < CCl₄
2. LiCl > BeCl₂ < BCl₃ > CCl₄
3. LiCl > BeCl₂ < BCl₃ < CCl₄
4. LiCl < BeCl₂ > BCl₃ > CCl₄

Answer: 1. LiCl < BeCl₂ < BCl₃ < CCl₄

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Question 27. Which among the following has a pyramidal shape?

1. PCl₃
2. BF₃
3. CO^–₂
4. SO₃

Answer: 1. PCl₃

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Question 28. The volatility of HF is low because of

1. Low polarisability
2. Low molar mass
3. Strong hydrogen bonding
4. Strong ionic bonding

Answer: 3. Strong hydrogen bonding