2nd year chemistry short questioms and long ch.9.10.11.12.13.14

CHEMISTRY 2ND YEAR
  CHAPTER # 09 AROMATIC HYDROCARBON   (Short questions)
Q.No.1. what are Aromatic Hydrocarbons?
Q.No.2. what are monocyclic Aromatic Hydrocarbons,Give example?
Q.No.3. what are Polycyclic Aromatic Hydrocarbons?
Q.No.4. How the straight chain structure of benzene is ruled out.
Q.no.5. write any two reactions which confirms the unsaturation or presence of double bond in benzene. ( arguments of Kekule)
Q.no.6. what are the objections in kekule's structure.?
Q.No.7. what information we get from X-ray analysis of Benzene.?
Q.No.8. Define resonance energy?
Q.No.9. what is resonance. Draw resonance contributing structure of Benzene.
Q.No.10. write modern concept about structure of Benzene.
Q.No.11. How Benzene os obtained from Acetylene?
Q.No.12. what is wurtz-fittig reaction?
Q.no.13. what is Halogenation of benzene.
Q.no.14. Explain the following reactions with examples
i. Nitration of benzene     ii. Halogenation of benzene (substition) iii. Sulphonation
Q.No.15. write down Friedel crafts Acylation,and Alkylation.
Q.No.16. what happens when Benzene burnt in free supply of oxygen? (combustion)
Q.No.17. write the Catalytic Oxidation? ( formation of maleic acid)
Q.No.18. How does ozone effect on Benzene to give glyoxal.
Q.No.19. what is the product of side chain oxidation of Benzene?
Q.No.20. How toluene can be converted in to benzoic acid?
Q.No.21. Explain ortho para directing groups and meta directing groups.
Q.no.22. what are Electron withdrawing and electron donating groups Give examples.
Q.No.22. Justify Alkenes are more reactive than Benzene.
Q.No. 23. convert benzene to
i. m chloronitrobenzene.    ii. o chloronitrobenzene








Long Questions...

1.Straight chain structure of benzene
2.,orbital diagram of benzene (Modern concept)
3.,friedel craft reactions
,4. ortho para and meta directing groups. ( orientations in benzene)



CHEMISTRY 2ND YEAR


 CHAPTER #10 ALKYL HALIDES
(short questions)

1.What are primary ,secondary, and tertairy halides?
2. what is useful methods for the preparation of Alkyl halides.
3. what is the best method for the preparation of Alkyl Iodide.
4. Discuss the reactivity of alkyl halide according to bond energy and bond polarity?
5. Define the followings i. electrophile  ii. nucleophile   iii. leaving groups   iv. substrate
6.what is nucleophillic substitution reaction. discuss its types.
7. give the general pattern of reaction of SN2 mechanism and also write its rate expression.
8.  discuss the configuration of molecules in SN2 reaction.
9. Give the mechanism of SN2 reaction.
10. what are B-elimanition reactions.
11. write the differences between E1 and SN1 reactions.
12. what is wurtz synthesis? give reaction.
13. how antiknock agent can be prepared? or How methyl chloride, ethyl chloride react with sodium lead alloys.
14. How grignard's reagent can be prepared.
15. Discuss the structure and reactivity of grignard's reagent.
16. write down the reactions of Grignard's reagent with Alcohol and CO2.
17. How tertairy alcohol can be prepared by Grignard's reagent.
18. write down the reactions of Grignard's reagent with epoxide and Aldehydes.

long questions. ..

1. SN1 SN2 Reactions

2.Reactions Grignard Reagent

3., beta elimination reactions (E1-E2 reactions)

4.Reactions of Alkyl Halides.

5. ,method of prep of alkyl halide






CHEMISTRY 2ND YEAR
Chapter # 11  ( Alcohols, Phenol, Ethers)
Short Questions.
  1. Why Alcohol, Phenol, Ethers are called derivatives of water?
  2. Write down the classification of Alcohol. also give Examples.
  3. What is wood spirit how it can be prepared now a days?
  4. What is fermentation . Give its use.
  5. How ethanol can be prepared from Molasses.
  6. How ethanol can be prepared from Starch.
  7. Why absolute alcohol can not prepared by the process of fermentation.
  8. What do you mean by the absolute alcohol.+ rectified spirit?
  9. What is ment by denaturing of Alcohols.
  10. Ethyl alcohol is liquid at room temperature while ethyl chloride or ethane or methane are gases.justify.
  11. Write the reactivity order of alcohol when Nucleophile and Electrophile are attacking reagents.
  12. Discuss oxidation reactions of Alcohols.
  13. Ethanol Gives different dehydrated product with conc. H2SO4  at different temperatures.
  14. Write the reactions of Alcohols with PCl5 & PCl3.
  15. What is lucas test.explain?
  16. How iodoform test is used to distinguish between Methanol & Ethanol.
  17. How Phenol can be prepared by Dow’s Method.
  18. Write two methods of preparation of Phenol.
  19. Why Phenol is more acidic than alcohol.
  20. Write the reactions of Zn & Br2 with Phenol.
  21. Write down the structural formula of Carbolic acid & Picric Acid.
  22. Explain the following reactions.of phenol    i. Sulphonation    ii. Nitration   iii. Ester Formation.
  23. How Bakelite is prepared from phenol?
  24. How ether can be prepared by Williamson’s synthesis.
Long Questions.



1. How will you distinguish between primary, secondary , tertiary Alcohols,? Explain with the help of reactions.
2. Reactions of Phenol.   
3. Preparation of Alcohols.
4. Reactions of Alcohol.






CHEMISTRY 2ND YEAR
Chapter # 12Aldehydes & Ketones
(Short Questions)
1.       Equation for industrial prepration of Aldehydes + Ketones?
2.       Using ethylene as starting material prepare acet aldehyde.
3.       How acetaldehyde and acetone can be prepared from calcium salt of acetic acid and formic acid.
4.       Discuss the preparation of formalin on industrial scale.
5.       What is Formalin.
6.       Why carbonyl compounds are very reactive. (Discuss their reactivity)
7.       Discuss the addition of sodium bisulphate to carbonyl compounds and give uses.
8.       Define condensation reaction.
9.       Aldol  condensation .Give its nessary condition.
10.   Define  disproportination reaction. Give Example.(cannizzaros reaction)
11.   Writedown the mechanism of Cannizzaros reaction. Which compound give this reaction.
12.   Write the reaction of   CH3-CO-H with HCN  C2H5MgI.
13.   How can you distinguish between aldehyde and ketones.
14.   Write the reaction of aldehydes with H2SO4.
15.   Write down the general mechanism for the reaction of ammonia derivatives with carbonyl compounds.
16.   What are acetals. Also give reaction.
17.   Write down the mechanism of reduction of reduction of carbonyl compounds by using NaBH4.
18.   What are the products of Oxidations of unsymmetrical Ketones?
19.   Write the chemistry of Tollen’s  test.
20.   What is Fehling’s test .
21.   What is Benedict’s  test.
22.   What is sodium Nitroprusside test.
23.   What is 2,4-DNPH test.
24.   Write down the uses of Formaldehyde.
25.   Write down the uses of Acetaldehyde.
Long questions:
1.       Base catalysed Reactions…
2.       Aldol condensation
3.       Cannizzaros reaction.
4.       Acid catalysed Reactions. . .





CHEMISTRY 2ND YEAR
Chapter # 13 Carboxylic acid.
(Short Questions)
1.    Prepare Carboxylic acid from Primary Alcohol.
2.    Prepare carboxylic acid from Alkyl Nitriles , Grignard’s reagent, and alkenes.
3.    What is cyclic dimer of Carboxylic acid.
4.    Write the reaction of carboxylic acid in which only H-atom of Carboxyl group is involved.
5.    Give the mechanism for the reaction of CH3COOH with SOCl2, Ethanol.
6.    Esters have fruity smell . Name some Esters with their Flavor.
7.    Give the mechanism of the formation of Acetamide from acetic acid and ammonia.
8.    Explain the formation of Acid Anhydide.
9.    How will you convert       a)  Acetic acid to Ethane         b) Acetic acid to Ethanol.
10.  How acetic acid is prepared on commercial scale from acetylene.
11.  What is Glacial acetic acid?
12.  What are the uses of carboxylic acid.
13.  What are amino acids. Write their general formula.
14.  What are acidic or basic aminoacids. Give examples.
15.  What are essential and non-essential  aminoacids.
16.  Draw the structure of Zwitter Ion.
17.  Write the reactions which explains the acidic or basic character of amino acid.
18.  What is Strecker  Synthesis ?explain.
19.  Give Two Reactions of  alpha-amino acid.
20.  What is Ninhydrin test.
21.  What is Peptides Linkage. Give example .
22.  What is the difference between polypeptide and protein .





CHEMISTRY 2ND YEAR
Chapter # 14 Macromolecules
(Short Questions)
  1. Define polymer and give the type of organic polymers.
  2. Write the types of polymers on their structures.
  3. Write the of polymers on the nature of monomers.
  4. Write the types of polymers based on thermal properties.
  5. What is Addition polymerization. Also write its mechanism.
  6. Define condensation polymerization with example.
  7. What are polyamide. Give the formation of Nylon 6-6.
  8. What are acrylic resins, epoxy resin, and polyester.
  9. Draw the open chain structure of Glucose and also give its name according to IUPAC system.
  10. Compare the structure of Glycogen and amylopectin.
  11. Draw the structure of Amylose and Amylopectin.
  12. Glycogen is called Animal starch, why?
  13. Explain the classification of protein based on physio-chemical properties.
  14. What is denaturing of protein. Explain with example.
  15. Write the importance of protein.
  16. What is the difference between Fat and oil.
  17. Write the physical properties of lipids.
  18. How the vegetable oil can be hardens to form vegetable Ghee.
  19. Define sponification and sponifation number.
  20. Define Rancidity and explain its causes.
  21. Define Acid number and Iodine number.
  22. What are Steroids? Give general structure of Steroids.
  23. What is cholesterol?
  24. Write down important uses of enzymes.
  25. What are Enzymes? Give two properties of Enzymes.
  26. Write the factors affecting the activity of enzymes.
  27. Write the importance of enzymes.
  28. Write any two differences between DNA & RNA.
  29. What is the replication of DNA?
  30. Draw the structure of purine Bases.






Comments

Unknown said…
Thank yOu Sir!
Ur guess paper is so useful for us! For the best preparation.
11 January 2021 at 11:22
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