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KMnO4 in an acidic medium oxidizes (a) C O to CO2 (b) N2H4 to N2 (c) HSO to SO
Which of the following is an incorrect statement ? (a)In a redox reaction in acidic medium, KMnO4 produces Mn2+ ions. (b)In a redox reaction in strongly alkaline medium, KMnO4produces MnO ions. (c)In a redox reaction …
KMnO4 in an acidic medium will not oxidize (a) (b)
is prepared by treating a solution containing Mn2+ ions with a very strong oxidizing agent such as
KMnO4 is manufactured on a large scale by (a)fusing MnO2 with KOH and then oxidizing the fused mixture with KNO3
Which of the following compounds is green in colour ?
Which of the following oxides of chromium is amphoteric in nature ?
The transition metals sometimes form nonstoichiometric compounds. These compounds have (a) definite structures and definite proportions
The transition elements are
Which of the following ions is expected to the coloured in solution ?
Which of the following electronic configurations represents Fe3+ ?
Which of the following does not possess unpaired electrons ?
Which of the following ions has the maximum number of unpaired d electrons ?
Zr (Z = 40) and Hf (Z = 72) have similar atomic and ionic radii because of: (NEET 2021)
Which of the following is not true about the transition elements ?
For a given ion, the magnetic moment is 2.83 BM. The total spin (s) of all the unpaired electrons is
The covalent radii of transition metals decrease from left to right in a period because
Which of the following metals does not show variable oxidation states ?
Which of the following ions is diamagnetic ?
Which of the following ions is paramagnetic ?
The highest possible oxidation state shown by osmium in its compounds is
Which of the following statements is correct ?
The noble character of platinum and gold is favoured by
Among the transition metals, the melting points of Zn, Cd and Hg are relatively low because
Transition metals