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Q. No.
Assertion (A):
C3O2 is a linear structure.
Reason (R):
Each C atom in C3O2 is sp hybridized.
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.
Both (A) and (R) are false.
Subtopic: Hybridisation |
76%
From NCERT
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Identify the incorrect statement among the following options:
| 1. | \(O^+_2\) ion is diamagnetic. |
| 2. | The bond orders of \(O_2^{+},O_2,O^-_2\) and \(O_2^{2-}\) are 2.5, 2, 1.5, and 1, respectively. |
| 3. | \(C_2\) molecule has four electrons in its two degenerate \(\pi \) molecular orbitals. |
| 4. | \(H^+_2 \) ion has one electron. |
Subtopic: M.O.T |
79%
From NCERT
NEET - 2022
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Amongst the following, which one will have maximum 'lone pair - lone pair' electron repulsions?
1. \(\mathrm{XeF_2}\)
2. \(\mathrm{CIF_3}\)
3. \(\mathrm{IF_5}\)
4. \(\mathrm{SF_4}\)
1. \(\mathrm{XeF_2}\)
2. \(\mathrm{CIF_3}\)
3. \(\mathrm{IF_5}\)
4. \(\mathrm{SF_4}\)
Subtopic: V.S.E.P.R & V.B.T |
76%
From NCERT
NEET - 2022
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Which one of the following is the correct order of decreasing bond enthalpies for the given species?
1. \(\mathrm {O^{2-}_2>O^-_2>O_2>N_2 }\)
2. \(\mathrm {N_2>O_2>O^{2-}_2>O^-_2 }\)
3. \(\mathrm {N_2>O_2>O^-_2>O^{2-}_2 }\)
4. \(\mathrm {O_2>N_2>O^-_2>O^{2-}_2 }\)
Subtopic: M.O.T |
74%
From NCERT
NEET - 2022
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Match the molecules in Column-I with their corresponding molecular shapes in Column-II.
Choose the correct matching sequence:
| Column-I (Molecule) |
Column-II (Shape) |
||
| (i) | BF3 | (a) | T-shape |
| (ii) | SF4 | (b) | Square planar |
| (iii) | XeF4 | (c) | See-saw |
| (iv) | ClF3 | (d) | Trigonal planar |
| (i) | (ii) | (iii) | (iv) | |
| 1. | d | c | b | a |
| 2. | a | b | c | d |
| 3. | d | a | c | d |
| 4. | b | c | d | a |
Subtopic: V.S.E.P.R & V.B.T |
85%
From NCERT
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| Assertion (A): | Sigma (\(\sigma\)) bond is strong, while pi (\(\pi\)) bond is weak. |
| Reason (R): | Atoms rotate freely about pi (\(\pi\)) bond. |
| 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. | Both (A) and (R) are false. |
Subtopic: Types of Chemical Bond |
71%
From NCERT
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Subtopic: Acidic, Basic Character & Fajan's Rule |
60%
From NCERT
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If an extra electron is added to the hypothetical molecule C2, this extra electron will occupy the molecular orbital:
1. \(\pi_{2p}\)*
2. \(\pi_{2p}\)
3. \(\sigma_{2p}\)*
4. \(\sigma_{2p}\)
1. \(\pi_{2p}\)*
2. \(\pi_{2p}\)
3. \(\sigma_{2p}\)*
4. \(\sigma_{2p}\)
Subtopic: M.O.T |
55%
From NCERT
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Match List I with List II and mark the appropriate option.
| List I (Types of bond) |
List II (Molecules) |
| A. Ionic | I. NH3.BF3 |
| B. Covalent | II. HCl |
| C. Hydrogen bond | III. LiF |
| D. Coordinate bond | IV. HF |
| A | B | C | D | |
| 1 | II | III | IV | I |
| 2 | III | II | I | IV |
| 3 | III | II | IV | I |
| 4 | II | III | I | IV |
Subtopic: van der Waal Force & Hydrogen Bonding | Resonance & Nature of Compounds |
62%
From NCERT
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The molecules that have an overall permanent dipole moment among the following is/are:
(A) CO2
(B) H2O
(C) NH3
(A) CO2
(B) H2O
(C) NH3
| 1. | A and C only | 2. | C and B only |
| 3. | A, B, and C | 4. | None of these |
Subtopic: Polarity |
83%
From NCERT
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