Process Chemistry Randdum NCV Level 3 — Memo

November 2022 — NCV Level 3 — Process Chemistry Randdum

NCV Level 3 2022 NCV Engineering

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Q1— Section header —

1.1.1False

1.1.2True

1.1.3True

1.1.4True

1.1.5

1.2Disadvanta ges of inorganic fertili ers: They are more expensive. They can be used in too big quantities. ey can pollute bodies of water. They may cause problems with moisture retention. Farmland need

1.3.1MgSO (NH SO NH CONH Cleaning Preheating 4 NO + 6 H

Q2— Section header —

2.1It is fire resistan It is durable Lafarge Natal Portland Cement Pretoria Portland Cement Mining o f raw

2.4mestone makes up about 80% of all the raw material used in the cement add strength to the cement due to its calcium carbonate content. (2\

2.5age 1: raw material preparation Stage 2: clinkering age 3: cooling Stage 4: cement milling Stage 5: product testing (5\

2.6.1CaCO In the pulp and paper industry, it is used to improve the prin ting properties of paper. In the plastic industry, it is used as a filler to replace more expensive

2.6.2It is used as a bleaching agent In the building industry, it is used to whitewash walls. In the paper industry, it is used to whiten paper. In the metal industry, it is used in t he manufacture of metal

2.6.3It is used in the production of sulphuric acid and cement. [32]32

Q3— Section header —

3.1Liquid soap Washing powder Shampoo Salting Strong change Herbicides whereas selective herbicides kill all types

Q4— Section header —

4.1Mechanical pulping Chemical pulping (2\

4.3Convection drying (air drying\ it refers to how tight the rolls are wound. Web control: it refers to keeping the web from w ndering. (4\

4.4.2Coating Embossing Carbon tissue Photographic paper Wallpaper [20] TOTAL:20

Topics Identified

Thermodynamics

Mark Allocation

Sections28 + 32 + 20 + 20 = 100 marks

Paper information

TitleMemo

SubjectProcess Chemistry Randdum

LevelNCV Level 3

Document typeNCV Engineering

Year2022

MonthNovember

Pages5

Downloads3

Examination context

Decade2020s

Years ago4y

SeasonSpring (SH)

Start dayTuesday

Exam periodNovember 2022

Days since exam1,439

About Process Chemistry Randdum 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 size222.8 KB

Pages5

Archived on8 September 2026

File age46d

ContributorFreeMode

Fingerprint15A6CE035293

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