Sulphur does not exist as S2 molecule because
it is less electronegative
it is not able to constitute bonds
it has ability to exhibit catenation
of tendency to show variable oxidation states
Oleum is
castor oil
oil of vitriol
fuming H2SO4
none of the above
C.
fuming H2SO4
Oleum is obtained by dissolving sulphur trioxide in H2SO4.
SO3 + H2SO4 (conc) H2S2O7 oleum
Oleum is also called fuming sulphuric acid because it fumes in moist air due to sulphur trioxide.
Liquor ammonia is
ammonium hydroxide
liquified ammonia gas
concentrated solution of NH3 in water
a solution of NH3 in alcohol
The number of moles of hydrogen molecules required to produce 20 moles of ammonia through Haber's process is :
20
30
40
10
Which is the correct thermal stability order for H2E (E = O, S, Se, Te and Po)?
H2O < H2S < H2Se < H2Te < H2Po
H2Po < H2Te < H2Se < H2S < H2S
H2Se < H2Te <H2Po < H2O < H2S
H2S < H2O < H2Se < H2Te <H2Po