The ashes of plant contain alkali metals 90% of which is
Li
K
Na
Rb
The atomic numbers of four elements are given below. Which is an alkaline earth metal?
10
20
30
40
Slaked lime is
CaCO3
CaO
Ca(OH)2
Ca(C2O4)
The most homogeneous family in periodic table is
Alkali metals
Alkaline earth metal
Volatile metals
Coinage metals
A gas reacts with CaO and not with NaHCO3 is
CO2
Cl2
O2
N2
Ca, Sr and Ba dissolves in liquid ammonia giving a
Highly non - conducting
Highly non - reducing
Diamagnetic
Deep blue in colour
Calcium is extracted by the electrolysis of
Fused CaCl2 and CaF2
CaCl2 solution
Fused CaCl2 2 NaF
Ca(PO4)2 solution
Milk of lime is
CaHCO3
CaSO4 2H2O
Most reactive among the following is
Mg
LiAlH4 is used as
An oxidising agent
Reducing agent
Mordant
A water softner