B.Sc. I (Semester Entrepreneurship (CBCS) Examination, 2018
Industrial chemistry
Paper II Fundamentals of Organic Chemistry
Day and Date Friday, 2-11-2018 Total Marks 70
Time 10.30 a.m. to 1.00 p.m. .00 .m. to .00 p.m.
Instructions All questions are compulsory.
Figures to the right indicate full marks.
Draw neat labeled diagrams wherever necessary.
Figures to the right indicate full marks.
1. Choose the correct alternative and rewrite the sentences again 14
Electrolysis of Sodium salt of butanoic acid gives
n-Hexane Isobutane But-1-ene Butane
Benzene contains how many electrons
3 0 6 12
Compound containing conjugated double bond is
Butyne Isobutylene 1,3-butadiene Butylene
Sodium nitroprusside when added to an alkaline solution of sulphide ions
produces coloration.
Red Green Black Purple
Saturated hydrocarbon mainly undergoes
Substitution reaction Addition reaction
Elimination reaction Polymerization
The catalyst used in Friedel-Craft's reaction is
Ni Pt AlCl3 None of these
Ibuprofen is an drug.
Antibacterial Antibiotic
Anti-inflammatory Antidiabetic
The Chromophore present in nitroso dye is
-NO2 O S
Which of the following alkane cannot be prepared by Wurtz reaction
Methane Ethane Propane Butane
10) Alizarin is an example of dye.
Azo Nitroso Stilbene Anthraquinone
11) Tranquillizer is functional drug.
Antipyretic CNS
Anti-inflammatory None of these
12) Olefins can be hydrogenated by
Zn HCl Raney Ni H2
Nascent H2 LiAIH4
13) The nature of pyridine is
Basic Acidic Amphoteric Neutral
14) Decarboxylation of higher fatty acid by heating with soda lime gives
Higher alkanes Lower alkanes
Alkenes Cycloalkanes
2. Define and explain any four of the following 8
Write internal Wurtz reaction for the preparation of Cycloalkanes.
State and explain Huckel's rule.
Write principle used in combustion method.
Define bacteriostatic and bactericidal.
Define chromophore with suitable example.
Write short note on any two of the following 6
How carbon and hydrogen in an organic compound are detected
Molecular orbital theory of benzene.
What is the action of following on cyclopropane
HBr
ii) Conc. H2SO4
iii) Raney Ni/H2.
SLR-SK 5 *SLRSK5*
Set P
3. Answer any two of the following 8
Write the qualities of good drug.
What are dyes Explain Witt's theory .
Determination of molecular weight of an acid by titration method.
Answer any one of the following 6
Define nitration. Explain mechanism of nitration of benzene.
What are dienes Give the classification of dienes with example.
4. Answer any two of the following 10
How will you estimate nitrogen by Kjeldahl's method
Write classification of drug based on therapeutical action.
What is meant by dehydration Explain dehydration of ethanol.
Answer any one of the following 4
Describe Friedel Crafts alkylation with mechanism.
Write the classification of dyes based on their constitution.
5. Answer any two of the following 14
Explain E1 and E2 mechanisms for dehydrohalogenation of alkyl halide.
Explain Carius method for detection of halogen.
Explain in brief sulphonation of benzene with mechanism.