CBSE
Oxidation number of sulphur in Caro's acid is
+6
+4
+8
+7
The number of moles of hydrogen molecules required to produce 20 moles of ammonia through Haber's process is :
20
30
40
10
Liquor ammonia is
ammonium hydroxide
liquified ammonia gas
concentrated solution of NH3 in water
a solution of NH3 in alcohol
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
Oleum is
castor oil
oil of vitriol
fuming H2SO4
none of the above
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
Polyanion formation is maximum in
nitrogen
sulphur
oxygen
boron
Which among the following is paramagnetic ?
Cl2O
ClO2
Cl2O7
Cl2O6
The correct structure of tribromooctaoxide is
Acetic acid reacts with PCl5, to form
CH2ClCOOH
CHCl2COOH
CH3COCl
CH3COOCl