Showing Page:
1/2
UNIVERSITY OF THE PUNJAB
6th semester 2022
APPLIED CHEMISTRY EXAMINATION: BS. 4 YEARS PROGRAM
CODE: CHEM-321
Time allowed. 2.5hrs Max.marks: 60
Q.NO.2: Attempt all the following short questions 2x15=30
i. Give some important uses of halogen derivatives?
ii. Give various types of Sulphonation?
iii. Why presence of sulfuric acid is important for the generation of nitronium ion
during nitration?
iv. What is cloud point in detergen ?
v. Write any four properties of polystyrene?
vi. Why safety glass cannot break easily?
vii. Briefly describe regenerative principle of heat economy?
viii. Differentiate between free blowing and mould blowing in shaping a glass?
ix. Give main function of evaporation in industry?
x. How transparent soap is prepared?
xi. What are the raw metrial for coloured glass?
xii. What is saponification and give its reation?
xiii. How soap flakes are produce?
xvi. Show with chemical reaction how oxalic acid is converted into sodium formate.
xiv. Briefly describe zwitter ion detergent.
Q.NO.3 : Attempt any 6 long questions: 6x5=30
i. Briefly describe some common chlorinating agent in halogination?
ii. What are multiple effect evaporators. Why these are preffered over single effect
evaporators?
iii. Discuss the steps involved for the manufacturing of ordinary glass?
iv. How detergents are classified. Briefly describe each one?
v. How phthalic anhydride is prepared from naphthalene on large scale?
vi. How anionic detergent is produce and give its flow sheet diagram?
vii. What are builder in soap and how they are designed for;
a)-Corrosion inhabitors b)-Fragrances
Showing Page:
2/2

Unformatted Attachment Preview

UNIVERSITY OF THE PUNJAB 6th semester 2022 APPLIED CHEMISTRY EXAMINATION: BS. 4 YEARS PROGRAM CODE: CHEM-321 Time allowed. 2.5hrs Max.marks: 60 Q.NO.2: Attempt all the following short questions i. ii. iii. iv. v. vi. vii. viii. ix. x. xi. xii. xiii. xvi. xiv. Give some important uses of halogen derivatives? Give various types of Sulphonation? Why presence of sulfuric acid is important for the generation of nitronium ion during nitration? What is cloud point in detergen ? Write any four properties of polystyrene? Why safety glass cannot break easily? Briefly describe regenerative principle of heat economy? Differentiate between free blowing and mould blowing in shaping a glass? Give main function of evaporation in industry? How transparent soap is prepared? What are the raw metrial for coloured glass? What is saponification and give its reation? How soap flakes are produce? Show with chemical reaction how oxalic acid is converted into sodium formate. Briefly describe zwitter ion detergent. Q.NO.3 : Attempt any 6 long questions: i. ii. 2x15=30 6x5=30 iii. iv. Briefly describe some common chlorinating agent in halogination? What are multiple effect evaporators. Why these are preffered over single effect evaporators? Discuss the steps involved for the manufacturing of ordinary glass? How detergents are classified. Briefly describe each one? v. How phthalic anhydride is prepared from naphthalene on large scale? vi. How anionic detergent is produce and give its flow sheet diagram? vii. What are builder in soap and how they are designed for; a)-Corrosion inhabitors b)-Fragrances Name: Description: ...
User generated content is uploaded by users for the purposes of learning and should be used following Studypool's honor code & terms of service.
Studypool
4.7
Trustpilot
4.5
Sitejabber
4.4