Chemistry Question Bank

The value of magnetic moment ( spin only) for Cu2+ in CuSO4.5H2O is

Which one of the following oxides of chromium is amphoteric in nature ?

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+ ?

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 ?

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

The electronic configurations of the first four members of the actinide series cannot be written accurately in a regular manner because of

The last electron of a d-block element occupies the orbital

Mercury is the only metal that is liquid at 0ºC. This is due to its :

Silver nitrate solution is kept in brown bottles in laboratory because :

Which one of the following ions is the most stable in aqueous solution ? (At. no. Ti = 22, V = 23, Cr = 24, Mn = 25) (CBSE AIPMT 2007)

Acidified potassium permanganate solution is decolourised by (AFMC 2007)

Reason of passivity of iron is (RPMT 2007)

Essential component of amalgam is (RPMT 2007)

What is the correct order of spin only magnetic moment (in BM) of Mn2+, Cr2+ and Ti2+? (AFMC 2008)

Which of the following compounds is coloured ? (AIIMS 2008)