Para and ortho hydrogen differ in
atomic number
atomic mass
spins of protons
number of neutrons
The half life of tritium is
~ 13.2 years
~ 12. 3 years
~ 14. 3 years
~ 10 years
Which one of the following is non reducing?
H2S
H2Te
H2Se
H20
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
On moving down the group, the ionisation energy of alkali metals.
increases
decreases
will not change
none of these
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
____________ can be prepared by bombarding lithium with slow neutrons.
protium
deuterium
tritium
When heated in bunsen flame, lithium gives _______ color
blue
red
lilac
crimson red
Protium consists of one proton and ______
three neutrons
no neutrons
two neutrons
one neutron
