09. HYDROGEN
Hydrogen

27680 When temporary hard water containing Mg(HCO3)2 is boiled the ppt. formed is of

1 MgCO3
2 MgO
3 Mg(OH)2
4 None of these
Hydrogen

27620 There is a sample of 10 volume of hydrogen peroxide solution. Calculate its strength.........%

1 3.00
2 4.045
3 2.509
4 3.035
Hydrogen

27621 In lab H2O2 is prepared by

1 Cold H2SO4+BaO2
2 HCl+BaO2
3 Conc.H2SO4+Na2O2
4 H2+O2
Hydrogen

27622 The structure of H2O2 is

1 259-a4
2 259-b4
3 HOOH
4 259-d4
Hydrogen

27680 When temporary hard water containing Mg(HCO3)2 is boiled the ppt. formed is of

1 MgCO3
2 MgO
3 Mg(OH)2
4 None of these
Hydrogen

27620 There is a sample of 10 volume of hydrogen peroxide solution. Calculate its strength.........%

1 3.00
2 4.045
3 2.509
4 3.035
Hydrogen

27621 In lab H2O2 is prepared by

1 Cold H2SO4+BaO2
2 HCl+BaO2
3 Conc.H2SO4+Na2O2
4 H2+O2
Hydrogen

27622 The structure of H2O2 is

1 259-a4
2 259-b4
3 HOOH
4 259-d4
Hydrogen

27623 HCl is added to the following oxides which one would give H2O2

1 MnO2
2 PbO2
3 BaO2
4 None of these
Hydrogen

27680 When temporary hard water containing Mg(HCO3)2 is boiled the ppt. formed is of

1 MgCO3
2 MgO
3 Mg(OH)2
4 None of these
Hydrogen

27620 There is a sample of 10 volume of hydrogen peroxide solution. Calculate its strength.........%

1 3.00
2 4.045
3 2.509
4 3.035
Hydrogen

27621 In lab H2O2 is prepared by

1 Cold H2SO4+BaO2
2 HCl+BaO2
3 Conc.H2SO4+Na2O2
4 H2+O2
Hydrogen

27622 The structure of H2O2 is

1 259-a4
2 259-b4
3 HOOH
4 259-d4
Hydrogen

27623 HCl is added to the following oxides which one would give H2O2

1 MnO2
2 PbO2
3 BaO2
4 None of these
Hydrogen

27680 When temporary hard water containing Mg(HCO3)2 is boiled the ppt. formed is of

1 MgCO3
2 MgO
3 Mg(OH)2
4 None of these
Hydrogen

27620 There is a sample of 10 volume of hydrogen peroxide solution. Calculate its strength.........%

1 3.00
2 4.045
3 2.509
4 3.035
Hydrogen

27621 In lab H2O2 is prepared by

1 Cold H2SO4+BaO2
2 HCl+BaO2
3 Conc.H2SO4+Na2O2
4 H2+O2
Hydrogen

27622 The structure of H2O2 is

1 259-a4
2 259-b4
3 HOOH
4 259-d4
Hydrogen

27623 HCl is added to the following oxides which one would give H2O2

1 MnO2
2 PbO2
3 BaO2
4 None of these
Hydrogen

27680 When temporary hard water containing Mg(HCO3)2 is boiled the ppt. formed is of

1 MgCO3
2 MgO
3 Mg(OH)2
4 None of these
Hydrogen

27620 There is a sample of 10 volume of hydrogen peroxide solution. Calculate its strength.........%

1 3.00
2 4.045
3 2.509
4 3.035
Hydrogen

27621 In lab H2O2 is prepared by

1 Cold H2SO4+BaO2
2 HCl+BaO2
3 Conc.H2SO4+Na2O2
4 H2+O2
Hydrogen

27622 The structure of H2O2 is

1 259-a4
2 259-b4
3 HOOH
4 259-d4
Hydrogen

27623 HCl is added to the following oxides which one would give H2O2

1 MnO2
2 PbO2
3 BaO2
4 None of these