- 1(current)
Q. No.The correct statement among the following is:
| 1. | When a covalent bond is formed, transfer of electrons takes place |
| 2. | Pure H2O does not contain any ion |
| 3. | A bond is formed when attractive forces overcome repulsive forces |
| 4. | HF is less polar than HBr |
Subtopic: Types of Chemical Bond | Covalent Bond | Polarity |
78%
Level 2: 60%+
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Which of the following linear combination of atomic orbitals will lead to the formation of molecular orbitals in homonuclear diatomic molecules [internuclear axis in z-direction]?
A. \(2 p_z \text { and } 2 p_x\)
B. \(2 \mathrm{s} \text { and } 2 \mathrm{p}_{\mathrm{x}}\)
C. \(3 d_{x y} \text { and } 3 d_{x^2-y^2}\)
D. \(2 \mathrm{s} \text { and } 2 \mathrm{p}_{\mathrm{z}}\)
E. \(2 p_z \text { and } 3 d_{x^2-y^2}\)
1. E Only
2. A and B Only
3. D Only
4. C and D Only
A. \(2 p_z \text { and } 2 p_x\)
B. \(2 \mathrm{s} \text { and } 2 \mathrm{p}_{\mathrm{x}}\)
C. \(3 d_{x y} \text { and } 3 d_{x^2-y^2}\)
D. \(2 \mathrm{s} \text { and } 2 \mathrm{p}_{\mathrm{z}}\)
E. \(2 p_z \text { and } 3 d_{x^2-y^2}\)
1. E Only
2. A and B Only
3. D Only
4. C and D Only
Subtopic: Types of Chemical Bond | V.S.E.P.R & V.B.T |
62%
Level 2: 60%+
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Among the following, the compound(s) containing no covalent bonds is/are:
KCl, PH3, O2, B2H6, H2SO4
1. KCl, B2H6, PH3
2. KCl, H2SO4
3. KCl
4. KCl, B2H6
Subtopic: Types of Chemical Bond | Ionic Bond | Covalent Bond |
72%
Level 2: 60%+
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Given below are two statements.
In the light of the above statements, choose the correct answer from the options given below.
| Statement I: | The presence of weaker \(\pi\)-bonds make alkenes less stable than alkanes. |
| Statement II: | The strength of the double bond is greater than that of carbon-carbon single bond. |
| 1. | Both Statement I and Statement II are correct. |
| 2. | Both Statement I and Statement II are incorrect. |
| 3. | Statement I is correct but Statement II is incorrect. |
| 4. | Statement I is incorrect but Statement II is correct |
Subtopic: Types of Chemical Bond |
54%
Level 3: 35%-60%
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Which of the following is correct order of bond length?
1. \(\mathrm{C}-\mathrm{H}<\mathrm{C} \equiv \mathrm{N}<\mathrm{C}=\mathrm{O}<\mathrm{C}-\mathrm{O} \)
2. \(\mathrm{C} \equiv \mathrm{N}<\mathrm{C}-\mathrm{H}<\mathrm{C}-\mathrm{O}<\mathrm{C}=\mathrm{O} \)
3. \(\mathrm{C}-\mathrm{H}<\mathrm{C}\equiv\mathrm{N}<\mathrm{C}-\mathrm{O}<\mathrm{C}=\mathrm{O} \)
4. \(\mathrm{C}-\mathrm{O}<\mathrm{C}\equiv\mathrm{N}<\mathrm{C}=\mathrm{O}<\mathrm{C}-\mathrm{H}\)
1. \(\mathrm{C}-\mathrm{H}<\mathrm{C} \equiv \mathrm{N}<\mathrm{C}=\mathrm{O}<\mathrm{C}-\mathrm{O} \)
2. \(\mathrm{C} \equiv \mathrm{N}<\mathrm{C}-\mathrm{H}<\mathrm{C}-\mathrm{O}<\mathrm{C}=\mathrm{O} \)
3. \(\mathrm{C}-\mathrm{H}<\mathrm{C}\equiv\mathrm{N}<\mathrm{C}-\mathrm{O}<\mathrm{C}=\mathrm{O} \)
4. \(\mathrm{C}-\mathrm{O}<\mathrm{C}\equiv\mathrm{N}<\mathrm{C}=\mathrm{O}<\mathrm{C}-\mathrm{H}\)
Subtopic: Types of Chemical Bond | Covalent Bond | Polarity | Hybridisation |
65%
Level 2: 60%+
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Consider the following statements from A to E:
Select the correct statements(s):
1. B, C
2. A, B, C
3. C, D, E
4. B, E
| (A) | \(NF_3\) has more dipole moment than \(NH_3\) |
| (B) | \(O^{-2}_2\) and \(F_2\) both have same bond order |
| (C) | In \(O_3\) central oxygen atom has -1 formal charge |
| (D) | In \(NO_2\) all the atoms follow octet rule, so it is stable |
| (E) | \(BeH_2\) is planar |
Select the correct statements(s):
1. B, C
2. A, B, C
3. C, D, E
4. B, E
Subtopic: Types of Chemical Bond | M.O.T | Octate, Isoelectronic Species, Lewis Structure & Formal Charge | van der Waal Force & Hydrogen Bonding |
80%
Level 1: 80%+
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- 1(current)
Q. No.
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