The oxidation state of alkali metals is
+2
0
+1
+4
Which of the following is incorrect?
H2O2 is a weak acid
H2O2 is a weak alkali
H2O2 acts as an oxidising agent
H2O2 is a reducing agent
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
Protium consists of one proton and ______
three neutrons
no neutrons
two neutrons
one neutron
_________is heavy water
H2180
H2160
H203
D20
On moving down the group, the ionisation energy of alkali metals.
increases
decreases
will not change
none of these
Alkali metals have low melting and boiling point due to the _______ in the crystal lattice.
Strong bonding
Weak bonding
High atomic weight
____________ can be prepared by bombarding lithium with slow neutrons.
protium
deuterium
tritium
Which one of the following is non reducing?
H2S
H2Te
H2Se
H20
