In the extraction of lithium _________ is used as anode.
Ni
P+
Fe
gas - coke splinter
_________is heavy water
H2180
H2160
H203
D20
Which of the following alkali metals have very low density.
Na
Cs
Li
K
The oxidation state of alkali metals is
+2
0
+1
+4
At room temperature ordinary hydrogen consists of about.
25% para and 75% ortho
75% para and 25% ortho
99% para and 1% ortho
1% para and 99% ortho
When heated in bunsen flame, lithium gives _______ color
blue
red
lilac
crimson red
Deuterium reacts with oxygen gives
D2O
D3O
D2
D4O
Protium consists of one proton and ______
three neutrons
no neutrons
two neutrons
one neutron
Ortho and para hydrogen have
identical chemical properties but different physical properties
identical physical properties and chemical properties
identical physical properties but different chemical properties
different physical and chemical properties
