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ACH3701 Exam (DETAILED ANSWERS) 2024 (October/November)

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ACH3701 Final Exam (DETAILED ANSWERS) 2024 (OCTOBER/NOVEMBER) 100% TRUSTED workings, explanations and solutions. For assistance call or us on +/ 2/ 5/ 4 /7 /7 /9 /5 /4 /0 /1 /3 /2 . QUESTION 1 [25] ACH3701 OCTOBER/NOVEMBER 2024 2 1.1 Give 3 types of fuels and their explanations. (6) 1.2 ...

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  • October 6, 2023
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ACH3701
EXAM (OCTOBER/NOVEMBER) 2023

, ACH3701
OCTOBER/NOVEMBER 2023




UNIVERSITY EXAMINATIONS




MAY/JUNE 2023

ACH3701

Applied Chemical Principles

100 Marks

Duration 3.0 Hours



EXAMINERS

First Examiner: Prof TE Motaung
Second Examiner: Mss L. Bendade
External Examiner: Prof C Zvinowanda


Instructions:

Closed book examination

Answer ANY FOUR questions.

Each question counts 25 Marks.

Connectivity to the internet and the IRIS invigilation system is compulsory.


The use of non-programmable pocket calculator is permissible

This paper consists of 9 pages.

Supplementary information/data as APPENDIX A are on pages 6 and 7.

The instructions for the uploading of the examination paper can be found in
APPENDIX B on pages 8 and 9.


Tick the honour pledge box before submission, if it appears on the screen.




QUESTION 1 [25]

1

, ACH3701
OCTOBER/NOVEMBER 2023



1.1 Give 3 types of fuels and their explanations. (6)




1.2 Mention 5 fuel sources and example of industries that consume the technology in
south Africa. (5)




1.3 Define the law of conservation and make two examples. (4)
1.4 Define Heat in thermodynamics and make two illustrations. (5)
1.5 Mention and explain 5 ways in which energy is presented in nature. (5)




QUESTION 2 [25]


2.1 Mention and explain 5 forms of energy [5]


2.2 Mention and explain 5 forms of energy [5]


2.2 Give three types of heats involved during the process of heat transfer and give
a practical example for each [5]


2.4 Proximate analysis of a wood (See table below) containing 15 % of lignin sample
is given below. Calculate the percentage of hemicellulose if cellulose shares the
same percentage as volatile matter
[5]
Sample Average Average Average Ash Average Fixed
moisture Volatile content/% Carbon/%
content/% matter/%
Wood 10 65 5 20




2

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