Potassium floats on water and reacts violently (explode) to produce potassium oxide and …….gas.
a) oxygen
b) water gas
c) hydrogen
d) nitrogen
When lithium reacts with chlorine, it burns with a bright flame to give a ……solid of lithium chloride.
a) red
b) yellow
c) white
d) green
When sodium reacts with chlorine, it burns with a bright flame to give a ……solid of sodium chloride.
a) red
b) yellow
c) white
d) green
When potassium reacts with chlorine, it burns vigorously with a bright flame to give a ……solid of potassium chloride.
a) red
b) yellow
c) white
d) green
Like other alkalis, potassium reacts so strongly with water that it must be stored in ……..oil.
a) diesel
b) petrol
c) kerosene
d) palm
Alkaline Earth Metals:
