Chemical Technology N6 — Memo

August 2019 — N6 — Chemical Technology

N6 2019 Nated Engineering

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Questions — A Preview of What to Expect in the Document

This section provides a quick preview of questions from the document. It may not display every question or the complete wording of each one. For the full content, including diagrams, tables and other information, view the original PDF above.

Q1— Section header —

1.1.1Free moisture content

1.1.2Crystalli ation

1.1.3Evaporation

1.1.4Distillation

1.1.5

1.2If another substance is dissolved in pure liquid, the vapour pressure of the solvent over the mixture will be less than that of the pure solvent at the same temperature. Vapour pressure of the solvent is less than

1.6Thin film dryer (1\

1.6Vapour Feed Vertical dryer Horizontal dryer Solids Dry powder zone Heating and crystallising zone Slurry zone Free

Q2— Section header —

2.1It is t he flow of heat from a hot body If the energy makes contact with a receiver some of

Q3— Section header —

3.1and that of the evaporati liquid. In many types of evaporators, the heat source is submerged below the surface of the evaporati liquid.

Q4— Section header —

4.1The number of kilogram of water vapour carried by 1 g of dry air

4.1A straight line giving the relationship between humidity and humid heat

4.1A line p resent ing the temperature at any specific temperature and pressure plus enough water vapour to saturate

4.3.1(5\ WET TRAY TOWER

4.3.2(4\ NATURAL DRA

4.4.1

Mark Allocation

Sections50 + 50 + 50 + 50 = 200 marks

Paper information

TitleMemo

SubjectChemical Technology

LevelN6

Document typeNated Engineering

Year2019

MonthAugust

Pages8

Downloads4

Examination context

Decade2010s

Years ago7y

SeasonWinter (SH)

Start dayThursday

Exam periodAugust 2019

Days since exam2,626

About Chemical Technology examination preparation

This TVET examination resource can be used as part of a structured revision programme. Past papers are most useful when learners attempt questions independently, work within a realistic time limit, and review their answers afterwards.

How to use this resource for revision

A TVET past examination paper is most useful when it is treated as an active revision exercise. Try the questions yourself before checking the corresponding memorandum. Where you make an error, identify the reason — was it a knowledge gap, a calculation mistake, an interpretation issue, or an examination technique problem?

For stronger examination practice, complete the paper without unnecessary interruptions and keep track of the questions that take the most time. Afterwards, review the memorandum and separate knowledge gaps from mistakes caused by interpretation, calculation, structure, or examination technique.

understanding question requirements

applying subject knowledge

working under time constraints

checking answers

identifying revision priorities

A practical revision approach

Start by completing the resource without looking at the memorandum. Review incorrect and incomplete answers afterwards and make a short revision list based on the areas that caused difficulty.

File details

File size357.4 KB

Pages8

Archived on8 September 2026

File age45d

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