- 1(current)
Q. No.How many molecules among the following exhibit a non-zero dipole moment?
\(BeF_2 , BF_3 , H_2O , NH_3 , HCl , CCl_4 \)
1. 4
2. 6
3. 0
4. 3
\(BeF_2 , BF_3 , H_2O , NH_3 , HCl , CCl_4 \)
1. 4
2. 6
3. 0
4. 3
Subtopic: Polarity |
79%
Level 2: 60%+
JEE
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Hints
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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%+
JEE
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How many of the following have zero dipole moment?
\(\mathrm{H}_2 \mathrm{~S}, \mathrm{CH}_4, \mathrm{NH}_3, \mathrm{BF}_3, \mathrm{SO}_2, \mathrm{NF}_3\)
\(\mathrm{H}_2 \mathrm{~S}, \mathrm{CH}_4, \mathrm{NH}_3, \mathrm{BF}_3, \mathrm{SO}_2, \mathrm{NF}_3\)
| 1. | Two(2) | 2. | Five(5) |
| 3. | Four(4) | 4. | Three(3) |
Subtopic: Polarity |
56%
Level 3: 35%-60%
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Hints
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Given below are two statements:
| Statement I: | Since electronegativity of F > H, so dipole moment of \(\text{NF}_3\) > \(\text{NH}_3.\) |
| Statement II: | The lone pair dipole in \(\text{NH}_3\) is not in the direction of the resultant bond dipole, while in the case of \(\text{NF}_3\), the lone pair dipole is in the direction of the resultant bond dipole. |
| 1. | Statement I is false but Statement II is true. |
| 2. | Both Statement I and Statement II are false. |
| 3. | Both Statement I and Statement II are true. |
| 4. | Statement I is true but Statement II is false. |
Subtopic: Polarity |
69%
Level 2: 60%+
JEE
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Hints
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- 1(current)
Q. No.
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