Ortho and para hydrogens differ in the
number of protons
molecular weight
nature of spins of protons
nature of spins of electrons
The hydride ion is iso-electronic with
He+
He-
Be
He
In aqueous solution, hydrogen peroxide oxidizes H2S to
Sulphur
Sulphuric acid
Caro's acid
Marshall's acid
Nascent hydrogen is prepared by
Na and C2H5OH
Al and NaOH
Zn and dil H2SO4
All of these
Heavy water (D2O) freezes at
0ºC
3.8ºC
- 3.8ºC
38ºC
Which of the following statements is not correct?
H2O2 oxidizes Fe(II) to Fe(III)
H2O2 can be obtained by electrolysis of dilute H2SO4
H2O2 reduces Mn (VII) to Mn(II)
H2O2 is a weak base
Which of the following methods leads to the production of the highest purity of dihydrogen?
Electrolysis of barium hydroxide solution
Reaction of steam on hydrocarbons
Electrolysis of brine solution
Process of coal gasification
The oxide that gives H2O2 on treatment with dilute acid is
PbO2
Na2O2
MnO2
TiO2
