Select Chapter Topics:
Q. No.Where are antibonding orbitals usually found?
1.
In the space between the nuclei of atoms.
2.
Around the nuclei of atoms.
3.
They do not exist; they are only theoretical.
4.
On the outer sides of atoms, opposite the overlap regions.
Subtopic: M.O.T |
Level 3: 35%-60%
Please attempt this question first.
Hints
Please attempt this question first.
What is the correct order of polarity for the following bonds?
| (i) | C — H | (ii) | F — H | (iii) | Br — H |
| (iv) | Na — I | (v) | K — F | (vi) | Li — Cl |
| 1. | Li — Cl >K — F > F — H > Br — H > C — H > Na — I |
| 2. | K — F > Li — Cl > F — H > Br — H > Na — I > C — H |
| 3. | K — F > F — H > Li — Cl > Br — H > Na — I > C — H |
| 4. | K — F> Li — Cl > F — H > Na — I > Br — H > C — H |
Subtopic: Polarity |
Level 3: 35%-60%
Please attempt this question first.
Hints
Please attempt this question first.
Which among the following concepts is not introduced by the Valence Bond theory?
| 1. | Partial ionic character of a covalent bond. |
| 2. | The number of lone pairs and bond pairs of electrons decide the shape of the molecules. |
| 3. | Delocalisation of electrons over two nuclei. |
| 4. | Shielding effect of electrons. |
Subtopic: V.S.E.P.R & V.B.T |
Level 3: 35%-60%
Please attempt this question first.
Hints
Please attempt this question first.
| Assertion (A): | Generally, the lowest energy structure of a molecule is the one with the smallest formal charges on the atoms. |
| Reason (R): | Formal charge helps in the selection of the lowest energy structure. |
| 1. | Both (A) and (R) are True and (R) is the correct explanation of (A). |
| 2. | Both (A) and (R) are True but (R) is not the correct explanation of (A). |
| 3. | (A) is True but (R) is False. |
| 4. | (A) is False but (R) is True. |
Subtopic: Octate, Isoelectronic Species, Lewis Structure & Formal Charge |
Level 4: Below 35%
Please attempt this question first.
Hints
Please attempt this question first.
Which of the following contains ionic, covalent, and coordinate bonds?
1. \(NaCN \)
2. \(PH_4Cl \)
3. \(CH_3COONa \)
4. \(N_3H \)
1. \(NaCN \)
2. \(PH_4Cl \)
3. \(CH_3COONa \)
4. \(N_3H \)
Subtopic: Types of Chemical Bond |
Level 4: Below 35%
Please attempt this question first.
Hints
Please attempt this question first.
Which set among the following represents the correct order of dipole moments?
| 1. |  |
| 2. | NH3 < NF3 |
| 3. | Trans-1-fluoro propene < Cis -1-fluoro propene |
| 4. | SbH3 < PH3 |
Subtopic: Polarity |
Level 3: 35%-60%
Please attempt this question first.
Hints
Please attempt this question first.
Given below are two statements:
| Assertion (A): | SF4 has two significant lp-bp repulsions. |
| Reason (R): | Its shape is a see-saw. |
| 1. | Both (A) and (R) are True, and (R) is the correct explanation of (A). |
| 2. | Both (A) and (R) are True, but (R) is not the correct explanation of (A). |
| 3. | (A) is False but (R) is True. |
| 4. | (A) is True but (R) is False. |
Subtopic: V.S.E.P.R & V.B.T |
Level 3: 35%-60%
Please attempt this question first.
Hints
Please attempt this question first.
Identify the correct increasing strength of intermolecular H-bonding.
1. \(\mathrm{HCN}<\mathrm{H}_2 \mathrm{O}<\mathrm{NH}_3\)
2. \(\mathrm{HCN}<\mathrm{CH}_4<\mathrm{NH}_3\)
3. \(\mathrm{CH}_4<\mathrm{HCN}<\mathrm{NH}_3\)
4. \(\mathrm{CH}_4<\mathrm{NH}_3<\mathrm{HCN}\)
1. \(\mathrm{HCN}<\mathrm{H}_2 \mathrm{O}<\mathrm{NH}_3\)
2. \(\mathrm{HCN}<\mathrm{CH}_4<\mathrm{NH}_3\)
3. \(\mathrm{CH}_4<\mathrm{HCN}<\mathrm{NH}_3\)
4. \(\mathrm{CH}_4<\mathrm{NH}_3<\mathrm{HCN}\)
Subtopic: van der Waal Force & Hydrogen Bonding |
50%
Level 3: 35%-60%
Please attempt this question first.
Hints
Please attempt this question first.
Given below are two statements:
| Assertion (A): |
Second-period elements do not exhibit the excitation of electrons. |
| Reason (R): | Second-period elements do not have vacant d-orbitals. |
| 1. | Both (A) and (R) are True and (R) is the correct explanation of (A). |
| 2. | Both (A) and (R) are True but (R) is not the correct explanation of (A). |
| 3. | (A) is True but (R) is False. |
| 4. | (A) is False but (R) is True. |
Subtopic: Types of Chemical Bond |
Level 3: 35%-60%
Please attempt this question first.
Hints
Please attempt this question first.
Which of the following is the most paramagnetic species?
1. \(O^+_2\)
2. \(C_2\)
3. \(B_2\)
4. \(N_2\)
1. \(O^+_2\)
2. \(C_2\)
3. \(B_2\)
4. \(N_2\)
Subtopic: M.O.T |
Level 3: 35%-60%
Please attempt this question first.
Hints
Please attempt this question first.
Select Chapter Topics:
© 2026 GoodEd Technologies Pvt. Ltd.