Which alkali metal react with nitrogen to form nitrides?
Li
Na
Cs
Al
When CO2 is bubbled into an aqueous solution of Na2CO3, the following is formed
H2O
OH-
NaHCO3
NaOH
Milk of lime is
CaCO3
CaHCO3
Ca(OH)2
CaSO4 2H2O
The atomic numbers of four elements are given below. Which is an alkaline earth metal?
10
20
30
40
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
LiAlH4 is used as
An oxidising agent
Reducing agent
Mordant
A water softner
Which alkaline earth metal is the most abundant in the earth crust?
Mg
Ca
Sr
Ba
Slaked lime is
CaO
Ca(C2O4)
The electrolyte employed in the extraction of sodium by downs electrolysis method is
An aqueous solution of NaCl
Molten NaCl
Molten NaOH
Molten mixture of MgCl2 and NaCl
