Maharashtra State Board of Technical Education 2008 Diploma Chemical Engineering Industrial Chemistry - Question Paper

Sample ques. Paper – I
Course Name :- Diploma in Chemical Engineering
Course code :- CH
Semester :- Third
Subject :- Industrial Chemistry
Duration :- three hours Marks : 80


Instructions :

1) All ques. are compulsory.
2) Illustrate your answers with neat sketches wherever necessary.
3) Write chemical reactions and structure if necessary.
4) Figures to the right indicate full marks.

Q.1 ans any 8 of the subsequent [Marks-16]

a) provide 2 characteristics of organic compounds.

b) provide 2 examples of Alicyclic compounds with structure.

c) Distinguish ranging from alkane and cycloalkane w.r.t structure.

d) describe ‘ Aromaticity’ with proper examples.

e) provide the distinction test for phenol and alcohol.

f) State ‘ Gibbs phase rule ‘

g) describe adsorbent and adsorbate.

h) provide any 2 kinds of solution.

i) provide the IUPAC name of the subsequent structure CH₃COOC₂H₅, CHI₃.

j) Write an empirical formula of ‘ Freundlich adsorption isotherm’


Q.2 ans any 3 of the subsequent [Mark-12]

a) What do you mean by ‘ Functional group’? ; illustrate your ans with 4 examples.

b) Locate primary, secondary, tertiary and quaternary carbon atoms from the subsequent structure
CH₃ CH₃
| |
CH₃ – CH - CH₂ - C- CH₃
|
CH₃

c) define the stability of cyclohexane with respect to Baeyer’s strain theory.

d) define the procedure to prepare Acetaldehyde and acetone from 2-methyl 2-butene by ozonolysis process.


Q.3 ans any 3 of the subsequent [Marks-12]

a) provide any 2 physical properties and uses of alkanes.

b) provide preparation of alkane by using ‘ Wurtz’ synthesis.

c) describe polymerization and discuss it w.r.t. alkenes.

d) defines pyrolysis of alkanes.


Q.4 ans any 4 of the subsequent [Marks-16]

a) provide any two-preparation methods of benzene.

b) provide the procedure to prepare chloroform from ethyl alcohol.

c) provide the procedure to prepare ethyl alcohol from ethene.

d) provide isomerism in alkyl halides with respect to Structural isomerism

e) define the subsequent reactions.

i) toluene from benzene.
ii) cyclohexane from benzene.

f) define subsequent terms with respect to phase rule.
1) Phase 2) Component 3) Degrees of freedom


Q.5 ans any 3 of the subsequent [Marks-12]

a) Draw the phase diagram of water system and define it.

b) define the subsequent terms with respect to 1 component sulphur system.
1) Polymorphism 2) enantiotropy

c) Distinguish ranging from physical adsorption and chemical adsorption.

d) What is an adsorption isotherm? Derive langmuir adsorption isotherm.


Q.6 ans any 3 of the subsequent [Marks-12]

a) provide an application of adsorption (any four)

b) What is Azeotropic mixture? State techniques for separation of azeotropes.

c) define ideal and non-ideal solution with respect to Raoult’s legal regulations.

d) What is Ostwald’s ionisation theory? define it with proper example.

Earning:   Approval pending.