Organic Chemistry focuses on “Chemical Bond

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Organic Chemistry Multiple Choice Questions & Answers (MCQs) focuses on “Chemical Bond”.

Q1. Which among the following chemical bond were described by Kossel and Lewis?
a) Metallic bond
b) Polar covalent bond
c) Coordinate bond
d) Ionic and Covalent bond

Answer: d

Explanation: Both Ionic and Covalent bond arise from the tendency of atoms to attain stable configuration of electrons.

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Q2. Which among the following is not a property of Ionic bond?
a) Losing of electrons
b) Gain of electrons
c) Sharing of electrons
d) Transfer of electrons

Answer: c
Explanation: Ionic bond results from a), b) and d). But the transfer of electrons is a property of Covalent bond.

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Q3. Which among the following formation is not an example of Covalent bond?
a) LiF
b) NH3
c) CF4
d) HF

Answer: a
Explanation: LiF (Lithium Fluoride) is an example of Ionic bond, as the formation takes place by transfer of electrons and not by sharing.

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Q4. State whether the given statement is true or false “Ionic bonds are non-directional”
a) True
b) False

Answer: a
Explanation: The ionic bond breaks up when dissolved in water and allow the charged particles to move freely.

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Q5. If a bond is made up of a large number of organic compound, then the bond is termed as?
a) Ionic bond
b) Metallic bond
c) Covalent bond
d) Dipolar bond

Answer: c
Explanation: This is because they have the tendency to transfer electrons.

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Q6. Which among the following is not an example of hydrogen bond?
a) H20
b) Liquid HCl
c) NH3
d) CHCl3

Answer: b
Explanation: There is no hydrogen bond in liquid HCl since the bond breaks up when dissolved in water.

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Q7. Atoms undergo bonding in order to ?
a) Attain stability
b) Lose stability
c) Move freely
d) Increase energy

Answer: a
Explanation: Atoms undergo bonding to attain stable electronic configuration and to gain energy.

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Q8. An atom differs from its ion in which among the following ?
a) Mass number
b) Atomic number
c) Neutrons
d) Number of protons

Answer: d
Explanation: When an atom loses or gains electrons its forms its corresponding ion, and hence it differs in proton number.

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Q9. Which among the following is NOT both a molecule and a compound?
a) C6 H12 O6
b) H2O
c) CO2
d) NaCl

Answer: d
Explanation: NaCl is a compound because it has ionic bond between Na and Cl. The other three options have both covalent bonds as well as ionic bonds, hence they can be termed as both molecules and compounds.

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Q10. Bond energy and the corresponding bond length vary directly with each other.
a) True
b) False

Answer: b
Explanation: Smaller the bond energy, greater will be the bond length and vice versa and hence the two vary inversely with each other.