Which of the following increasing order of oxidising power is correct for the following species?
(A)
(B)
(C)
(D)
In which of the following oxoanions the oxidation state of the central atom is not the same as that of its group number in the periodic table?
(A)
(B)
(C)
(D)
At
1. Decomposes into
2. Decomposes into
3. Sublimes go give liquid
4. Sublimes to give gaseous dimmer
Anhydrous ferric chloride is prepared by
(1) Heating hydrated ferric chloride at a high temperature in a stream of air.
(2) Heating metallic iron in a stream of dry chlorine gas.
(3) Reaction of ferric oxide with HCl (aq).
(4) Reaction of metallic iron with HCl (aq).
Anhydrous ferrous sulphate on heating gives :
1. Both
2.
3.
4.
Excess of Kl reactions with solution and solution is added to it. Which of the following statement is incorrect for this reaction ?
(1) Evolved is reduced
(2) is formed
(3) is oxides
(4) is formed.
Select the correct statement :
(1) reduces to metallic Ag.
(2) Organic tissues turn black by reducing it to Ag.
(3) is soluble in .
(4) All are correct statements.
The yellow colour solution of changes to orange-red on passing gas due to the formation of :
(1)
(2)
(3)
(4)
Which of the following statements is true for the compounds [X], [Y] and [Z] ?
1. | In all three compounds, the chromium is in +6 oxidation states. |
2. | [Z] is a deep blue-violet coloured compound which decomposes rapidly in aqueous solution into and dioxygen. |
3. | Saturated solution of [Y] gives a bright orange compound, chromic anhydride, with concentrated |
4. | All of these |