The molecule which does not exhibit dipole moment is
NH3
CHCI3
H2O
CCI4
The BCI3 is a planar molecule whereas NCI3 is pyramidal because
B - CI bond is more polar than N-CI bond
N-CI bond is more covalent than B-CI bond
Nitrogen atom is smaller than boron atom
BCI3 has no lone pair but NCI3 has a lone pair of electrons
When the hybridisaiton state of carbon atom changes from sp3 to sp2 and finally to sp, the angle between the hybridised orbitals
Decreases gradually
Decreases considerably
Is not affected
Increases progressively
Among the following which compound will show the highest lattice energy?
KF
NaF
CsF
RbF
The high density of water compared to ice is due to
Hydrogen bonding interactions
Dipole-dipole interactions
Dipole-induced dipole interactions
Induced dipole-induced dipole interactions
The weaker among the following types of bond is
ionic
covalent
metallic
H-bond
Which of the following does not have a tetrahedral structure?
BH-4
BH3
NH+4
In which of the following molecules, the central atom said to adopt sp2-hybridisation?
BeF2
BF3
C2H2
H2O has a net dipole moment while BeF2 has zero dipole moment because.
H2O molecules is linear while BeF2 is bent
BeF2 molecule is linear while H2O is bent
Fluorine has more electronegativity than oxygen
Beryllium has more electronegativity than oxygen
The dielectric constant of H2O is 80. The electrostatic force of attraction between Na+ and CI- will be.
Reduced to 1/40 in water than in air
Reduced to 1/80 in water than in air
Will be increased to 80 in water than in air
Will remain unchanged
