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
The oxide that gives H2O2 on treatment with dilute acid is
PbO2
Na2O2
MnO2
TiO2
Which of the following compounds acts as a bleaching agent?
MgCO3
NaOH
H2O2
D2O
‘Syngas’ is a mixture of hydrogen with
Oxygen
Nitrogen
Carbon dioxide
Carbon monoxide
The O — O — H bond angle in H2O2 is
106º
109º 28'
120º
97º
The molarity of a 100 mL solution containing 5.1 g of hydrogen peroxide is
0.15 M
1.5 M
3.0 M
50.0 M
Ortho and para hydrogens differ in the
number of protons
molecular weight
nature of spins of protons
nature of spins of electrons
Heavy water (D2O) freezes at
0ºC
3.8ºC
- 3.8ºC
38ºC
