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Que :- Tell me the true and false :-
1. Hard character of first row metal can be altered or affected by other ligand present by the principle of symbiosis .
2. NH2-NH2 is a monodentate ligand.
3. Liganding atom like as N, O , F form stable bond with small metal
Please justy the statements
[BALVINDER SINGH KASWAN]

Que :- The energy of electron in hydrogenic atom with nuclear charge varies as :-
1. Z
2. Z^2
3. 1/Z
4. 1/Z^2
Que :- The effective nuclear charge of He atom is 1.7 .
The first ionization enery of He atom is :-
1. 13.6
2. 23.1
3. 39.3
4. 27.2
Please explain on paper
[BALVINDER SINGH KASWAN]

Que :- Tell me TRUE or FALSE ??
All enatiomers are Racemic mixture .
Justify that statement

Que : - Electron transfer from Fe(H2O)6^+2 to Fe(H2O)6^+3 is likely to occur via :-
1. d-d transitions
2. Inner sphere electron transfer
3. SN^1 mechanism
4. Outer sphere electron transfer
Plz explain..... [Chem Acadmy , IIT-JAM coaching , New Delhi ]

Que :- Which of the following is different Bond order ?
1. CO
2. CN^-
3. BF
4. N2
Plz explain also......
( TIFR EXAM. )

Que :- If an electron is in the ground state of hydrogen atom , the probability that its distance from the proton is more than one bohr radius is approximately :-
1. 0.68
2. 0.48
3. 0.28
4. 0.91
Plz explain also........
(IIT GATE EXAM )

Que :- Triplet superphosphate is made by treating phosphate rock with :-
1. H2SO4
2. HNO3
3. HCl
4. H3PO4
plz explain also....
(IIT GATE )

Que : - For any NMR active nucleus. The magnitude of radio frequency for absorbing NMR phenomenon depends on :-
1. Strength of the magnetic field
2. Choice of nuclei
3. Both 1 and 2
4. The nuclear energy level
Plz explain.... (CSIR NET EXAM. )