M.Sc. (Semester III) (CBCS) Examination Nov/Dec-2018
Industrial Chemistry
UNIT PROCESSES IN CHEMICAL TECHNOLOGY
Time: 2½ Hours
Max. Marks: 70
Instructions: All questions are compulsory. Figures to the right indicate full marks.
Q.1
Select the most correct alternative and rewrite the answer.
14
Chlorobenzene on nitration in gives chloronitro benzene, the nitro group gets attached to which position in greater percentage
ortho
meta
para
ortho, para
Dimenthyl amine in presence of methyl isocyanate and nitric acid gives
Methyl nitramine
Primary dimethyl nitramine
Sec dimethyl nitramine
Methyl amine
To calculate the D.V.S. from the mixed acid analysis the formula is
D.V.S=SEN/ R+W
D.V.S=WEN/ R+W
D.V.S=REN/ S+W
D.V.S=SR+W
Toluene on reaction with sulfuryl chloride in presence of antimony chloride as a catalyst gives
Mono chlorotoluene
Dichlorotoluene
Trichloro toluene
Toluene sulfonyl acid
CH2=CH2 Cl2
CHCl2CH2CH3
ClCH2CH2Cl
CH3CH2CH2Cl
CH3CHCl2CH3
C6H12 SO2Cl2
C6H11SO2Cl
C6H11Cl
C6H10Cl2
C6H9Cl3
CH3COOC2H5 HOCH3
CH3COOH
C2H5COOH
CH3COOCH3
CH3OH

(CH3CO)2O (CH3)3 COH
CH3COOCH3
CH3 2CHOHN
CH3COOC2H5
CH3COOC CH3 3
Substance which are introduced in a polymerization reaction to slow down or stop the reaction
Inhibators
Initiators
Catalyst
Accelerators
10) resins are produced by the condensation polymerization of formaldehyde with urea or melamine.
Amino
Epoxy
Alkyd
Phenolic
11) 2C2H5 SH
C2H5OH
C2H5OC2H5
C2H5S−SC2H5
CH3COOH
12) Sulfation involves placement of which group on carbon atom?
−OSO2OH
-SO2-OH
-CISO3H
−SO2Cl
13) For what production are Sulfonates and Sulphates used?
Detergents
Emulsifying
De-emulsifying
All of the mentioned
14) HNO3+2H2SO4 +H3O+2HSO4−. Fill in the blank?
NO+
NO2+
NO3+
None of the mentioned
Q.2

Answer the following (any four)
08
Give the relations between D.V.S. and stability of nitrator charge.
Name the sulfonating agents used for the unit process.
Give any two reactions for the oxidation of olefins.
Write any two reactions for the preparation of ester from metal salt and alkyl halide.
Define isotactic and syndiotactic polymers.
b)Write notes on (Any two)
06
Addition polymerization
Oxynitration
Chlorination of acetaldehyde
Q.3
a)Answer the following(Any two)
08
What are the workings up procedures in sulphonation?
Describe the Schmid nitrator.
How is epoxy resin prepared?
b)Answer he following (Any one)
06
Describe the synthesis, properties and application of polystyrene.
Discuss the manufacturing process of ethyl acetate
Q.4
a)Answer the following (Any two)
10
Discuss the desulphonation process
Give the manufacturing process of monochloroacetic acid.
Describe in brief the esterification by organic acid

Answer the following (Any one)
04
Describe in brief the polyamides.
Discuss in brief the manufacturing process of chlorobenzene.
Q.5Answer the following (Any Two)
14
a)Discuss in brief the manufacturing process of nitrobenzene.
b)Give an account on vapor phase oxidation of methanol.
c)Describe the manufacture of vinyl acetate.