Test Preparation on Chemical Bonding-II-Chemistry Test Series For NEET-2020
1.
Which of the following has zero dipole moment (a) CH2Cl2 (b) CH4 (c) NH3 (d) PH3
CH4 have regular tetrahedron so its dipole moment is zero.
2.
Which one of the following is having zero dipole moment (a) CCl4 (b) CH3Cl (c) CH3F (d) CHCl3
3.
Fluorine is more electronegative than either boron or phosphorus. What conclusion can be drawn from the fact that BF3 has no dipole moment but PF3 does
(a) BF3 is not spherically symmetrical but PF3 is symmetrical (b) BF3 molecule must be linear (c) The atomic radius of P is larger than the atomic radius of B (d) The BF3 molecule must be planar triangular
4.
If the electron pair forming a bond between two atoms A and B is not in the centre, then the bond is
When electronegativity difference is more between two joined atoms then covalent bond becomes polar and electron pair forming a bond don’t remain in the centre.
5.
According to Fajan’s rule, covalent bond is favoured by