Chemical Bonding | First Year Chemistry Past Paper MCQs | mosaicbro.com

Chemical Bonding | First Year Chemistry Past Paper MCQs

7 of 41 questions (Page 5 of 6)

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29 The bond angle in CH₄ is:
Correct Answer: B
Explanation: CH₄ is tetrahedral with perfect 109.5° bond angles (sp³ hybridization).
30 Which of the following is an example of ionic crystal?
Correct Answer: B
Explanation: NaCl is a classic ionic crystal (Na⁺ and Cl⁻ ions in lattice).
31 The value of dipole moment of CS₂ is:
Correct Answer: B
Explanation: CS₂ is linear and symmetrical (S=C=S); bond dipoles cancel (μ = 0).
32 The nature of bond in diamond is:
Correct Answer: B
Explanation: Diamond has a 3D network of sp³ hybridized C-C covalent bonds.
33 Octet rule is not followed in formation of:
Correct Answer: D
Explanation: PCl₅ expands its octet (10 electrons around P).
34 The shielding effect is responsible for:
Correct Answer: A
Explanation: Inner electrons shield outer electrons from the full nuclear charge.
35 The elements having low ionization energy are:
Correct Answer: B
Explanation: Metals have low ionization energies (easily lose electrons).
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