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Previous Year Question Paper of PH Organic Chemistry II [ 2019 ]
SECTION A
1. Attempt all ques in brief. [ 10*2 =20 ]
- Write a short note on benzene including resonance structure.
- Give the structure and uses of Saccharin.
- What are phenols? Give physical properties of it.
- Give resonance structure and uses of Resorcinol.
- Enumerate the difference between fats and oils ?
- Define Iodine number (Iodine value).
- Define acetyl value. Give its signification.
- What are the uses of Triphenylmethane ?
- Give physical and chemical properties of naphthalene.
- Define cycloalkanes.
SECTION B
2. Attempt any two ques of the following [ 2*10=20 ]
- Explain aromatic electrophilic substitution reactions in Benzene with respect to halogenation with mechanism.
- Give structures, synthesis, reactions and uses of Anthracene derivatives.
- Explain Baeyer strain theory of stability of Cycloalkanes and give its limitations.
SECTION C
3. Attempt any five ques of the following [ 7*5=35 ]
- Give the structure and uses of DDT, BHC and Chloramine.
- Define aromatic amines and give resonance structure of aniline. Discuss the basicity of aromatic amines and effect of substituent.
- Discuss the principle involved in determination of saponification value of a fat/oil.
- Why phenols are acidic in nature? Discuss effect of substituents on acidity of phenols.
- Explain principle and procedure involved in estimation of acid value of fat/oil ?
- Give structure, synthesis and importance of Diphenylmethane.
- Explain Sache-Mohr theory of stability of cycloalkanes. Give reactions of cyclopropane and cyclobutane.
Previous Year Question Paper of PH Organic Chemistry II [ 2020 ]
SECTION A
1. Attempt all ques in brief. [ 10*2 =20 ]
- Give structure and uses of DDT.
- Give molecular orbital picture of benzene.
- Why phenol is acidic in nature?
- What is Friedal craft acylation? Explain with suitable reaction.
- Give structure and uses of Napthols.
- Explain acid value.
- Give Hawarth synthesis of Phenanthrene.
- Give stability order of cycloalkanes.
- Draw any four aromatic structures.
- Give structure and uses of Diphenylmethane.
SECTION B
2. Attempt any two ques of the following [ 2*10=20 ]
- Give structure, preparation and properties of phenol.
- Discuss analytical, synthetic and other evidences in derivation of structure of benzene.
- Write a short note on theory of strainless ring.
SECTION C
3. Attempt any five ques of the following [ 7*5=35 ]
- Give Huckle's theory with suitable examples.
- Give structure, preparation and properties of benzoic acid.
- Give effect of substituent on orientation of monosubstituted benzene compounds towards electrophilic substitution reaction.
- Explain saponification and iodine number.
- Give reactions of fat and oils.
- Give Baeyer’s strain theory and its limitation.
- Give structure, preparation and properties of naphthalene.
Previous Year Question Paper of PH Organic Chemistry II [ 2021 ]
SECTION A
1. Attempt all ques in brief. [ 10*2 =20 ]
- Define Aromaticity.
- Why phenol is acidic?
- Why p-nitro aniline is less basic than aniline?
- Write the definition of RM value.
- Enlist the difference between drying and nondrying oil with example.
- What do you understand by angle strain?
- Write the different conformations of ethane.
- Illustrate the principle of saponification value.
- Write the structure and medicinal uses of DDT and Naphthalene.
- What is banana bonding.
SECTION B
2. Attempt any two ques of the following [ 2*10=20 ]
- Discuss the methods of preparations and chemical reactions of Phenol.
- Discuss in detail about the methods of preparations chemical reactions of naphthalene.
- Write in detail cycloalkanes. about the methods of preparation and chemical reactions of cycloalkanes.
SECTION C
3. Attempt any five ques of the following [ 7*5=35 ]
- Explain effect of substituents on reactivity and orientation of mono substituted benzene compounds towards electrophilic substitution reaction.
- Write about analytical, synthetic, and other evidence in the derivation of structure of benzene.
- Explain Basicity of amines and effect of substituents on basicity of amines.
- Write a detailed note on Iodine value.
- Explain the Haworth synthesis of Anthracene and Phenanthrene.
- Illustrate in detail about Baeyer’s Strain theory with its limitations.
- What do you understand by fats, oils, and waxes? Discuss the chemical reactions of fats, oils and waxes.
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