B.Sc. I (Semester (Entrepreneurship) (CBCS)
Examination, 2018
INDUSTRIAL CHEMISTRY (Paper II)
Fundamentals of Organic Chemistry
Day and Date Wednesday, 4-4-2018 Max. Marks 70
Time 10.30 a.m. to 1.00 p.m.
N. B. All questions are compulsory.
ii) Draw neat labelled diagrams and write equations.
iii) Figures to the right indicate full marks.
1. Select most correct alternative for each of the following and rewrite the sentences 14
Which of the following alkanes can not be prepared by Wurtz reaction.
Methane Ethane
Propane Butane
ii) Ethanol on heating with conc. H2SO4 gives
CH3COOC2H5 C2H6
C2H4 C2H2
iii) Acetylene, when passed through red hot tube product is formed.
Cyclohexane Cyclohexene
Ethane Benzene
iv) Which of the following is cumulated diene
CH2 CH CH CH2 CH2 CH CH2 CH CH2
CH2 C CH2 CH3 CH2 CH2 CH3
Baeyer's reagent is
alk KMno4 solution acidic KMno4 solution
Neutral KMno4 solution Aq Br2 solution
vi) The correct structure of benzene was given by
Wohler Kekule
Davy Dewar
vii) The catalyst used in Friedel-Craft's reaction is
Ni Pt
Alcl3 None of these
viii) Carbon and Hydrogen are estimated by
Liebig's method Carius method
Kjeldahl's method None of these
ix) The drug used to control concentration of blood sugar are
agent.
Anti-diabetic Antipyretic
Anti-malerial Anti-inflammatory
Azo dyes contain functional group.
N N N O
N NO2 N OH
xi) Potash bulbs are used during the estimation of
Sulphur Nitrogen
Halogen Carbon
xii) Paludrin is used as
Antidiabetics Antipyretics
Antimalerials Antiamoebic agent
xiii) A chromophore is an
Atom Group of atom
Unsaturated group Aldehyde group
xiv) Olefins can be hydrogenated by
Zn Hcl Raney Ni H2
Nascent H2 LiAlH4 in ether
2. Answer any seven of the following 14
Give the principle of Lassaigne's test.
ii) State and explain Huckel's rule.
iii) What are dienes Gives their general formula.
iv) Define molecular and Empirical formula.
Draw resonating structure of benzene.
vi) Define the term chromophore and auxochrome.
vii) How will you prepare cyclopropane by internal Wurtz reaction
viii) What is mean by Vat dye
ix) State and explain Kolbe's reaction for preparation of alkane.
3. Write short notes on any two 10
Molecular orbital theory of benzene.
ii) Explain Witt's theory.
iii) How will you detect nitrogen by Kjeldahal's method
What are qualities of good drug 4
4. Answer any two of the following 14
Write classification of drug based on therapeutical action.
ii) Describe the various types of dienes and illustrate the reaction of
3 butadiene.
iii) Determination of molecular weight of an acid by titration method.
5. Answer any two of following 14
Explain combustion method for detection of carbon and hydrogen and calculate
of carbon when 1.8 × 10-4 Kg of an organic compound subjected to
combustion method produced 2.64 × 10-4 Kg of CO2.
ii) Write the classification of dyes based on their constitution.
iii) What is meant by dehydrohalogenation Explain E1 and E2 mechanism for
dehydrohalogenation of lower alkyl halides.