D and F Block Elements

Which one of the elements with the following outer orbital configuration may exhibit the largest number of oxidation states

Which of the following pairs has the same size

Identify the alloy containing a non – metal as a constituent in it

Which one of the following does not correctly represent the correct order of the property indicated against it

Four successive members of the first series of the transition metals are listed below. For which one of them the standard potential (E⁰ M²⁺/M) value has a positive sign

Which one of the following statements is not true

Which of the following is not a transition metal

What is the magnetic moment for Mn²⁺ ion in low spin state

Which one of the following statements concerning lanthanides elements is false

Which of the following lanthanide is commonly used

Which of the following metals acts as the most efficient catalyst

Which of the following trivalent ion has the largest atomic radii in the lanthanide series

Transition metals show paramagnetism

A mixture of two salts is not soluble in water but dissolves completely in dilute hydrochloric acid to form a colourless solution. The mixture could be

Which of the following cations has the maximum number of unpaired electrons

In which of the following compounds manganes has oxidation number equal to that of sulphur in manganese (II) sulphate

How many FeSO₄.7H₂SO₄ will be oxidised by an acidified solution containing 9.48 g KMnO₄

Aufbau principle does not give the correct arrangement of filling up of atomic orbitals in

On the extraction of iron, the slag produced is

CrO₃ dissolves in aqueous NaOH to give

Which of the following is the green coloured powder produced when ammonium dichromate is used in fire works

Which one of the following statements about transition elements is incorrect

All Cu(II) halides are known except the iodide. The reason for it is that

In the electrolytic refining of zinc

The term platforming is

Many transition metals and their compounds exhibit

Lanthanide contraction is due to increase in

In the brown ring test for the nitrate ion, the brown colour is due to

Vanadium (III) oxide is a strong

Fine the magnetic moment of a divalent ion in aqueous solution if its atomic number is 25

Which of the following pairs of transition metal ions are the stronger oxidising agents in aqueous solution

which of the following ions has the maximum magnetic moment

The acidic, basic or amphoteric nature of Mn₂O₇, V₂O₅ and CrO are respectively

In the laboratory, manganese(II) salt is oxidised to permanganate ion in aqueous solution by

Permanganate ion changes to ….. in acidic medium

Oxidation state of iron in [Fe(H₂O)₅NO]SO₄ is

Which of the following atomic number of uranium is the most radioactive

The hardness of transition elements is due to their

Which of the following metal is not ferromagnetic

The magnetic moment of Sc³⁺ is

Which of the following statement concerning lanthanides elements is fals

The number of unpaired electron in Mn²⁺ is

Oxidation number of chromium in Na₂Cr₂O₇ is

Which is not the property transition elements

A yellow metal sulphide is

The amphoteric oxide is

Reaction of solid KMnO₄ ith conc.H₂SO₄ produces manganese heptoxide (Mn₂O₇) in

Chinese white is

In Cu-ammonia complex, the state of hybridization of Cu²⁺ is

Platinum, palladium and iridium are called noble metals because