- 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 |
77%
Level 2: 60%+
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The intermolecular potential energy for the molecules A, B, C and D given below suggests that:
1. A-B has the stiffest bond.
2. D is more electronegative than the other atoms.
3. A-D has the shortest bond length.
4. A-A has the largest bond enthalpy.
Subtopic: Covalent Bond |
Level 4: Below 35%
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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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The correct statement for the molecule CsI3 is:
1. It contains Cs+ and ions.
2. It contains Cs3+ and I– ions.
3. It contains Cs+, I– and lattice I2 molecule.
4. It is a covalent molecule.
Subtopic: Ionic Bond | Covalent Bond |
51%
Level 3: 35%-60%
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Arrange the following in the decreasing order of their covalent character :
(A) \(\text{LiCl}\)
(B) \(\text{NaCl}\)
(C) \(\text{KCl}\)
(D) \(\text{CsCl}\)
Choose the most appropriate answer from the options given below :
1. (A) > (C) > (B) > (D)
2. (B) > (A) > (C) > (D)
3. (A) > (B) > (C) > (D)
4. (A) > (B) > (D) > (C)
(A) \(\text{LiCl}\)
(B) \(\text{NaCl}\)
(C) \(\text{KCl}\)
(D) \(\text{CsCl}\)
Choose the most appropriate answer from the options given below :
1. (A) > (C) > (B) > (D)
2. (B) > (A) > (C) > (D)
3. (A) > (B) > (C) > (D)
4. (A) > (B) > (D) > (C)
Subtopic: Covalent Bond |
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Arrange the following in increasing order of their covalent character.
A. \(\mathrm{CaF}_2 \)
B. \(\mathrm{CaCl}_2 \)
C. \(\mathrm{CaBr}_2 \)
D. \(\mathrm{CaI}_2\)
Choose the correct answer from the option given below.
1. \(B<A<C<D\)
2. \(A<B<C<D\)
3. \(A<B<D<C\)
4. \(A<C<B<D\)
A. \(\mathrm{CaF}_2 \)
B. \(\mathrm{CaCl}_2 \)
C. \(\mathrm{CaBr}_2 \)
D. \(\mathrm{CaI}_2\)
Choose the correct answer from the option given below.
1. \(B<A<C<D\)
2. \(A<B<C<D\)
3. \(A<B<D<C\)
4. \(A<C<B<D\)
Subtopic: Covalent Bond |
85%
Level 1: 80%+
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In the structure of SF4, the lone pair of electrons on sulphur occupies the:
1. Equatorial position and there are two lone pair - bond pair repulsions at 90º
2. Equatorial position and there are three lone pair - bond pair repulsions at 90º
3. Axial position and there are three lone pair - bond pair repulsion at 90º
4. Axial position and there are two lone pair - bond pair repulsion at 90º
1. Equatorial position and there are two lone pair - bond pair repulsions at 90º
2. Equatorial position and there are three lone pair - bond pair repulsions at 90º
3. Axial position and there are three lone pair - bond pair repulsion at 90º
4. Axial position and there are two lone pair - bond pair repulsion at 90º
Subtopic: Covalent Bond |
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Which of the following pair of molecules contain odd electron molecule and an expanded octet molecule?
1. \(\mathrm{BCl}_3 \text { and } \mathrm{SF}_6\)
2. \(\mathrm{NO} \text { and } \mathrm{H}_2 \mathrm{SO}_4\)
3. \(\mathrm{SF}_6 \text { and } \mathrm{H}_2 \mathrm{SO}_4\)
4. \(\mathrm{BCl}_3 \text { and } \mathrm{NO}\)
1. \(\mathrm{BCl}_3 \text { and } \mathrm{SF}_6\)
2. \(\mathrm{NO} \text { and } \mathrm{H}_2 \mathrm{SO}_4\)
3. \(\mathrm{SF}_6 \text { and } \mathrm{H}_2 \mathrm{SO}_4\)
4. \(\mathrm{BCl}_3 \text { and } \mathrm{NO}\)
Subtopic: Covalent Bond |
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The number of non-ionisable hydrogen atoms present in the final product obtained from the hydrolysis of \(PCl_5\) is/are:
1. Two (\(2\))
2. Three (\(3\))
3. One (\(1\))
4. Zero (\(0\))
1. Two (\(2\))
2. Three (\(3\))
3. One (\(1\))
4. Zero (\(0\))
Subtopic: Covalent Bond |
52%
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 |
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