Hydrogen and its compound Questions

Hydrogen peroxide in its reaction with KIO4 and NH2OH respectively, is acting as a

(a) H2O2 + O3 → H2O + 2O2 (b) H2O2 + Ag2O → 2Ag + H2O + O2 Role of hydrogen peroxide in the above reactions is respectively...

″Metals are usually not found as nitrates in their ores″. Out of the following two (a and b) reasons which is/are true for the above observation ?(a) Metal nitrates are highly unstable.(b)...

Nitrogen dioxide and sulphur dioxide have some properties in common. Which property is shown by one of these compounds, but not by the other ?

Given :-The enthalpy of the hydrogenation of these compounds will be in the order as :-

Given : -Which of the given compounds can exhibit tautomerism?

HgCl2 and I2 both when dissolved in water containing I- ions the pair of species formed is :

Which of the following statements about hydrogen is incorrect?

MY and NY3, two nearly insoluble salts, have the same Ksp values of 6.2 ×10-13 at room temperature. Whichstatement would be true in regard to MY and NY3 ?...

Hydrogen peroxide oxidises [Fe(CN)6]4- to [Fe(CN)6]3- in acidic medium but reduces [Fe(CN)6]3- to [Fe(CN)6]4- in alkaline edium. The other products formed are, respectively :...

In which case is the number of molecules of water maximum?

Compound(s) that on hydrogenation produce(s) optically inactive compound(s) is (are) -

Very pure hydrogen (99.9%) can be made by which of the following processes ?

Which of the following dissolve in hot conc NaOH solution ?

One of the constituent of German silver is :

How many unpaired electrons are present in Ni2+ ?

Iron is rendered passive by treatment with concentrated :

In the metallurgy of iron, when limestone is added to the blast furnace, the calcium ions ends up in :

The types of bonds present in CuSo4. 5H2O are only :

Zinc-copper couple that can be used as a reducing agent is obtained by :