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प्रश्न
How is Benzonitrile converted to Benzophenone?
How is benzophenone prepared from benzonitrile?
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उत्तर
Benzonitrile reacts with phenyl magnesium bromide in equimolecular proportion in the presence of dry ether to give an adduct, which on acid hydrolysis gives benzophenone
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संबंधित प्रश्न
Explain the following, giving two examples:
Coordination entity
What is meant by unidentate ligand?
Give the oxidation state, d-orbital occupation and coordination number of the central metal ion in the following complex:
K3[Co(C2O4)3]
Amongst the following, the most stable complex is:
Write IUPAC names of the following compounds
Following compounds are given to you :
2-Bromopentane, 2-Bromo-2-methylbutane, 1-Bromopentane
1) Write the compound which is most reactive towards SN2 reaction.
2) Write the compound which is optically active.
3) Write the compound which is most reactive towards β-elimination reaction.
The ligand triethylenetetramine is _______.
Write structures of compounds A and B of the following reaction :
A group of atoms can function as a ligand only when:
The coordination number of Cr in [Cr(NH3)3(H2O)3]Cl3 is ___________.
The oxidation number of Fe in K4[Fe(CN)6] is ____________.
Which of the following is non-ionizable?
Which of the following complexes formed by \[\ce{Cu^2+}\] ions is most stable?
Arrange the following complexes in the increasing order of conductivity of their solution:
[Co(NH3)3Cl3], [Co(NH3)4Cl2]Cl, [Co(NH3)6]Cl3, [Cr(NH3)5Cl]Cl2
Match the complex ions given in Column I with the colours given in Column II and assign the correct code:
| Column I (Complex ion) | Column II (Colour) |
| A. \[\ce{[Co(NH3)6]^{3+}}\] | 1. Violet |
| B. \[\ce{[Ti(H2O)6]^{3+}}\] | 2. Green |
| C. \[\ce{[Ni(H2O)6]^{2+}}\] | 3. Pale blue |
| D. \[\ce{(Ni(H2O)4 (en)]^{2+} (aq)}\] | 4. Yellowish orange |
| 5. Blue |
Match the compounds given in Column I with the oxidation state of cobalt present in it (given in Column II) and assign the correct code:
| Column I (Compound) | Column II (Oxidation state of Co) |
| A. \[\ce{[Co(NCS)(NH3)5](SO3)}\] | 1. + 4 |
| B. \[\ce{[Co(NH3)4 CL2]SO4}\] | 2. 0 |
| C. \[\ce{Na4[Co(S2O3)3]}\] | 3. + 1 |
| D. \[\ce{[Co2(CO)8]}\] | 4. + 2 |
| 5. + 3 |
Assertion: \[\ce{Cr(H2O)6]Cl2 and [Fe(H2O)6]Cl2}\] are reducing in nature.
Reason: Unpaired electrons are present in their d-orbitals.
Oxidation number of cobalt in K[Co(CO)4] is
The complex which has no d electrons in the central atom is:-
Metal attached with EDTA in an octahedral complex, has coordination number ______.
What are Homoleptic complexes?
Why chelate complexes are more stable than complexes with unidentate ligands?
How many ions are produced from the complex Co(NH3)6]Cl2 in solution?
What is meant by the chelate effect? Give an example.
Explain the following, giving two examples:
Coordination number
Explain the following, giving two examples:
Homoleptic
Give two examples of unidentate ligands.
Give two examples of didentate ligands.
What is meant by ambidentate ligand?
