Boiling points of hydrocarbons increase with the increase in number of carbon atoms. It is mainly due to_________________?
A. More strength of H-bonding
B. More strength of London forces
C. Less polarizability
D. All of the above
A. More strength of H-bonding
B. More strength of London forces
C. Less polarizability
D. All of the above
A. Cl
B. N2
C. CO2
D. CO
A. carbon is non-metal while silicon is semi-metal
B. CO2 is an independent molecule while SiO2 has network covalent structure
C. CO2 forms multiple bond while silicon does not form multiple bonds
D. Silicon has all sigma bonds
A. this acid, in ancient times, was used to eliminate ant-hills
B. this corrosive acid is secreted by ants to drive away their enemies
C. this acid was first obtained by the distillation of ants
D. ants are attracted by the odour of this acid
A. continuous and falling solubility curve
B. discontinuous and falling solubility curve
C. continuous and rising solubility curve
D. discontinuous and rising solubility curve
A. Pressure increases
B. Dilution decreases
C. Dilution increases
D. None
A. C
B. Zn
C. Al
D. Cu