Match List - I with List - II.

List - I (lon)	List - II (Magnetic Moment (BM))
(A) \(V^{2+}\)	(1) 1.73
(A) \(Ni ^{2+}\)	(II) 3.87
(C) \(Cu ^{2+}\)	(III) 4.90
(D) \(Cr ^{2+}\)	(IV) 2.84

Choose the correct answer from the options given below :

Read the passage carefully and answer the questions:
The degeneracy of the \(d\) orbitals has been removed due to ligand electron-metal electron repulsions in the octahedral comple: to yield three orbitals of lower energy, \(t_{2 g}\) set and two orbitals of higher energy, \(e_g\) set. This splitting of the degenerate levels due to the presence of ligands in a definite geometry is termed as crystal field splitting and the energy separation is denoted by \(\Delta_0\). Thus energy of the two \(e_g\) orbitals will increase by \((3 / 5) \Delta_0\) and that of three \(t_{2 g}\) will decrease by \((2 / 5) \Delta_0\). The crystal field splitting \(\Delta_0\) depends upon the field produced by the ligand and charge on the metal ion. Some ligands are able to produce strong fields, in which case the splitting will be large, whereas others produce weak fields and consequently result in small splitting of \(d\) orbitals. Relative magnitude of crystal field splitting energy \(\Delta_0\) and pairing energy, \(P\) (energy required for electron paring in a single orbital) determine the formation of low spin ( \(\Delta_0>P\) ) or high spin ( \(\Delta_0<P\) ) complex. In tetrahedral coordination entity formation, the \(d\)-orbital splitting is inverted and is smaller as compared to the octahedral field splitting. The crystal field theory attributes the colour of the complex to \(d-d\) transition of the electron. The colour of the coordination compounds depends on the crystal field splitting. In the absence of ligand, crystal field splitting does not occur and hence the substance is colourless.
Which of the following complex is not expected to be coloured?

Read the Passage carefully and answer the questions
When a ligand is bound to a metal ion through a single donor atom, it is said to be a unidentate ligand but when it bind through two donor atoms, then it is said to be didentate ligand and when several donor atoms are present in a single ligand, it is said to be a polydentate ligand. When a dior polydentate ligand uses its two or more donor atoms simultaneously to bind a single metal ion, it is said to be a chelate ligand. The number of such ligating groups is called the denticity of the ligand. ligand which has two different donor atoms and either of the two ligetes in the complex is called ambidentate ligands. The number of ligand donor atoms to which the metal is directly bonded, is called coordination number of the metal ion in the complex. Complexes in which a metal is bound to only one kind of donor groups are known as homoleptic and in which a metal is bound to more than one kind of donor groups are known as heteroleptic complexes.
Which among the following is an ambidentate ligand?

To avoid the medical condition called 'bends' in scuba divers, the composition of gas filled in the tank is

Match List - I with List - II.

List - I	List - II
(A) Gel	(I) Hair cream
(B) Foam	(II) Dust
(C) Emulsion	(III) Cheese
(D) Aerosol	(IV) Whipped cream

Choose the correct answer from the options given below :

Which one of the following salts would have the same value of the van't Hoff factor as that of \(\text{Al(NO}_3\text{)}_3\)?

hen a mixture of \(K _2 Cr _2 O _7\) and NaCl is warmed with concentrated \(H _2 SO _4\), red vapours of \((A)\) are evolved, which turn NaOH yellowish due to formation of compound (B). A and B respectively are:

Out of all isomers of \(\text{C}_4\text{H}_{11}\text{N}\), how many are primary amines?

The ratio of the electric field (E) and the magnetic field (B) associated with a plane electromagnetic wave is equal to

Identify the most volatile compound

The number of arbitrary constants in the particular solution of a differential equation of order 4 and degree 3 is

When copper and germanium are cooled from room temperature to 100 K, then :

The number of all possible matrices of order 2 × 2 with each entry 0 or 1 is: