d and f-Block Elements Questions

Upon heating with Cu2S, the reagent(s) that give copper metal is/are

Which one of the following ions exhibits d–d transition and paramagnetism as well ?

The geometry and magnetic behaviour of the complex [Ni(CO)4] are

Match the metal ions given in Column I with the spin magnetic moments of the ions given in Column II and assign the correct code : Column I Column II a. Co3+ i.8 B.M. b. Cr3+ ii.35 B.M. c. Fe3+ iii.3 ...

Which type of 'defect' has the presence of cations in the interstitial sites ?

When copper is heated with conc. HNO3 it produces:

Which series of reactions correctly represents chemical reactions related to iron and its compound?

The pair(s) of reagents that yield paramagnetic species is/are

Which of the following processes does not involve oxidation of iron ?

Magnetic moment 2.84 B.M. is given by :-(At. nos, Ni = 28, Ti = 22, Cr = 24, Co = 27)

For the four successive transition elements (Cr, Mn, Fe and Co), the stability of + 2 oxidation state will be there in which of the following order ? (At. no. Cr = 24, Mn = 25, Fe = 26, Co = 27)...

Which of the following is correct according indicated property :-

Which one is paramagnetic :-

Which is not paramagnetic :-

Weight of oxygen in Fe2O3 and FeO in the simple ratio for the same amount of iron is:-

CeO2 is :

Dimethyl glyoxime is used for the test of ........ in alkaline medium :-

In the separation of Cu2+ and Cd2+ in 2nd group qualitative analysis of cations tetramimine copper (II) sulphate and tetrammine cadmium (II) sulphate react with KCN to form the corresponding cyano com...

Calamine is an ore of :

Select the paramagnetic :-