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

The quantity of heat required to convert one mole of liquid into its vapours at its boiling point is called molar heat of__________________?

A. Vaporization
B. Evaporation
C. Crystallization
D. Sublimation

Water has maximum density at __________________?

A. 0°c
B. 2°c
C. 4°c
D. 100°c

Formation of vapours from the surface of a liquid is called________________?

A. Vapourization
B. Evaporation
C. Condensation
D. Cracking

The ttractive forces between the partial positive end of one molecule and partial negative end of other molecule are called________________?

A. Dipole-dipole forces
B. Ion dipole-dipole forces
C. London dispersion forces
D. Debye forces

Vapour pressure is not affected by_______________?

A. Surface area
B. Temperature
C. Intermolecular forces
D. Atmospheric pressure

Who used the term Concentrationwindow to draw the arbitrary lines of demarcation

A. Einstein
B. Dr.a.walash
C. Schwartz
D. S.e.manhan

Water has high density and minimum volume at__________?

A. 0°c
B. 4°c
C. 100°c
D. None of these

Diabetes could be classified into______ types.

A. two types
B. three types
C. four types
D. None of these

Which one of the following serve as aquatic solar fuel cell:

A. Bacteria
B. Virus
C. Fungi
D. Algae