Slaked lime is
CaCO3
CaO
Ca(OH)2
Ca(C2O4)
Calcium is extracted by the electrolysis of
Fused CaCl2 and CaF2
CaCl2 solution
Fused CaCl2 2 NaF
Ca(PO4)2 solution
The most homogeneous family in periodic table is
Alkali metals
Alkaline earth metal
Volatile metals
Coinage metals
LiAlH4 is used as
An oxidising agent
Reducing agent
Mordant
A water softner
The atomic numbers of four elements are given below. Which is an alkaline earth metal?
10
20
30
40
Most reactive among the following is
Li
K
Na
Mg
Lithium is the only alkali metal which do not place in kerosene but is wrapped in paraffin wax, because
It floats to the surface of kerosene because of low density
It reacts with kerosene
It does not react with air and H2O
These are metals
The ashes of plant contain alkali metals 90% of which is
Rb
Which gives apple gives green colour in fire works?
Ba
Ca
Which alkali metal react with nitrogen to form nitrides?
Cs
Al
