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 among the following compounds has 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.