Q. No.In which of the following compounds is an intramolecular hydrogen bond present?
1.
H2O2
2.
HCN
3.
Cellulose
4.
Concentrated acetic acid
The pair of electrons in the given carbanion, CH3C≡C-, is present in which of the following orbitals?
| 1. | sp3 | 2. | sp2 |
| 3. | sp | 4. | 2p |
The incorrect statement among the following regarding the molecules of CH4, NH3, and H2O is:
| 1. | The H-O-H bond angle in H2O is larger than the H-C-H bond angle in CH4. |
| 2. | The H-O-H bond angle in H2O is smaller than the H-N-H bond angle in NH3. |
| 3. | The H-C-H bond angle in CH4 is larger than the H-N-H bond angle in NH3. |
| 4. | The H-C-H bond angle in CH4, the H-N-H bond angle in NH3, and the H-O-H bond angle in H2O are all greater than 90°. |
The correct order of solubility in an aqueous medium is:
1. CuS > ZnS > Na2S
2. ZnS > Na2S > CuS
3. Na2S > CuS > ZnS
4. Na2S > ZnS > CuS
In which of the following pairs of molecules/ions, the central atoms have \(\mathrm{sp}^2\) hybridisation?
| 1. | \(\mathrm{NO}^-_2 ~\mathrm{and}~ \mathrm{NH}_3\) | 2. | \(\mathrm{BF}_3 ~\mathrm{and}~ \mathrm{NO}^-_2\) |
| 3. | \(\mathrm{NH}^-_2 ~\mathrm{and}~ \mathrm{H_2O}\) | 4. | \(\mathrm{BF}_3 ~\mathrm{and}~ \mathrm{NH}^-_2\) |
The correct increasing order of bond angles in the following species is:
| 1. | \(Cl_2O<ClO_2<ClO^-_2\) | 2. | \(ClO_2<Cl_2O<ClO^-_2\) |
| 3. | \(Cl_2O<ClO^-_2<ClO_2\) | 4. | \(ClO^-_2<Cl_2O<ClO_2\) |
Given the following hydrocarbon:
The state of hybridisation of carbons marked 2, 3, 5 and 6 in the following hydrocarbon are, respectively :
1. sp, sp3, sp2 and sp3
2. sp3, sp2, sp2 and sp
3. sp, sp2, sp2 and sp3
4. sp, sp2 sp3 and sp2
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