1. | \(CH_4>H_2S>NH_3>HF \) |
2. | \(H_2S>NH_3>HF>CH_4 \) |
3. | \(NH_3>HF>CH_4>H_2~S \) |
4. | \(HF>NH_3>H_2S>CH_4\) |
Which molecule among the following is non-polar?
1. | SbCl5 | 2. | NO2 |
3. | POCl3 | 4. | CH2O |
Which of the following set of molecules will have zero dipole moment?
1. | Boron trifluoride, hydrogen fluoride, carbon dioxide, 1 3-dichlorobenzene |
2. | Nitrogen trifluoride, beryllium difluoride, water, 1 3 -dichlorobenzene |
3. | Boron trifluoride, beryllium difluoride, carbon dioxide, 1 4-dichlorobenzene |
4. | Ammonia, beryllium difluoride, water, 1, 4-dichlorobenzene |
Arrange the following species in increasing order of their dipole moments:
NH3,NF3,BF3,H2O
1.
2.
3.
4.
The correct order of ionic character among CaH2, BeH2 and BaH2 is:
1.
2.
3.
4.
A molecule among the following that has the maximum dipole moment is:
1. | \(\mathrm{CO_2}\) | 2. | \(\mathrm{CH_4}\) |
3. | \(\mathrm{NH_3}\) | 4. | \(\mathrm{NF_3}\) |
Which of the following is a polar molecule?
1. | SF4 | 2. | SiF4 |
3. | XeF4 | 4. | BF3 |
What is the dominant intermolecular force or bond that must be overcome in converting liquid CH3OH to a gas?
1. Hydrogen bonding
2. Dipole-dipole interaction
3. Covalent bonds
4. London dispersion force
Which of the following would have a permanent dipole moment?
1. BF3
2. SF4
3. SiF4
4. XeF4
H2O is dipolar, whereas BeF2 is not. It is because:
1. | H2O involves hydrogen bonding whereas BeF2 is a discrete molecule. |
2. | H2O is linear and BeF2 is angular. |
3. | H2O is angular and BeF2 is linear. |
4. | The electronegativity of F is greater than that of O |