Hydrogen bonding is involved in____________________?
A. Solubility
B. Cleansing action of detergents
C. Biological molecules
D. All
Liquids and Solids
Liquid crystal is discovered by __________________?
Liquid crystal is discovered by __________________?
A. William Crooks
B. Fredrack Reinitzer
C. J.J Thomson
D. Bravis
Vapour pressure of water at 100°C is___________________?
Vapour pressure of water at 100°C is___________________?
A. 55 mm Hg
B. 760 mm Hg
C. 355 mm Hg
D. 1489 mm Hg
In order to mention the boiling point of water at 110°C the external pressure should be ?
In order to mention the boiling point of water at 110°C the external pressure should be ?
A. Between 760 torr and 1200 torr
B. Between 200 torr and 760 torr
C. 765 torr
D. any value of pressure
When substance moves from a solid to a liquid state all of the following changes occur except__________________?
When substance moves from a solid to a liquid state all of the following changes occur except__________________?
A. Molecules become more disordered
B. K.E of the molecules decreases
C. Intermolecular forces become weaker
D. Molecule become further separated
Which of the following has strongest intermolecular forces of attraction ?
Which of the following has strongest intermolecular forces of attraction ?
A. Hydrogen (H2)
B. Chlorine (Cl2)
C. lodine (I2)
D. Methane (CH4)