The deliquescence is a property in which a solid____________________?

A. Absorbs mositure and remains solid
B. Absorbs mositure and turns to liquid form
C. Loses water of crystallization
D. Increases the number of water of crystallization

In diaphragm cell level of brine in anode compartment is kept slightly higher which prevents_______________?

A. Hydroxide ions to reach anode
B. Chlorine gas to mix
C. Cathode to decay
D. All of the above

Alkali and alkaline earth metals impart colours when heated over burner. It is due to______________?

A. Smaller electronegativity of alkali metals
B. Smaller ionic radius of these metals
C. De-excitation of electrons from higher energy levels to low energy level
D. Excitation of electrons from low energy levels to higher energy levels

First ionization potential of alkaline earth metal is greater than alkali metals because___________________?

A. They are more reactive
B. They have greater atomic radii
C. They have smaller atomic sizes
D. All

A elements are named as alkali metals because_______________?

A. Their oxides are basic
B. Their oxide and hydroxides are water soluble
C. Both a & b
D. They are found in earth

Formula of Chile saltpetre is__________________?

A. Nano3
B. Caco3
C. Ba (no3)2
D. Nh4cl

The oxides of beryllium BeO is_______________?

A. Acidic
B. Basic
C. Amphoteric
D. Neutral

Li is different from its family members due to____________________?

A. Small size
B. High charge density
C. Less electropositivity
D. All of the above

Carbonates of lithium are not stable like that of sodium due to________________?

A. Low electronegativity
B. Low electropositivity
C. Low charge density
D. Not known yet

Which one of the following is not an alkali metal ?

A. Francium
B. Caesium
C. Rubidium
D. Radium