Which among the following species has a triangular planar shape?
1. | N3- | 2. | NO3- |
3. | NO2- | 4. | CO2 |
Paramagnetic species among the following is:
1. CO
2.
3. CN-
4. NO+
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
XeF2 is isostructural with :
1. TeF2
2. ICI2-
3. SbCl3
4. BCl3
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
Which of the following compounds has a higher hydration energy than the lattice energy?
1. BaSO4
2. MgSO4
3. CaSO4
4. SrSO4
Which of the following species has a zero dipole moment?
(ii) (iii) (iv)
1. | (i) and (iv) | 2. | (ii) and (iv) |
3. | (iii) and (iv) | 4. | (i), (iii) and (iv) |
Which of the following is a pair of polar molecules?
1.
2.
3.
4.