The incorrect statement among the following regarding the molecules of CH_4, 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°.

Which among the following species has a triangular planar shape?

Paramagnetic species among the following is:

1. CO               

2. ${\mathrm{O}}_2^{-}$

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?

The correct increasing order of bond angles in the following species is:

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?

$\left(\mathrm{i}\right)$ ${\mathrm{CO}}_2$ (ii) ${\mathrm{COCl}}_2$ (iii) ${\mathrm{CH}}_2$ ${\mathrm{Cl}}_2$ (iv) ${\mathrm{BCl}}_3$