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100+ Free NSSCO Chemistry (6117) Practice Questions

Prepare for the Namibia Senior Secondary Certificate Ordinary Level Chemistry (Syllabus 6117) exam with instant access — no signup required.

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Key Facts: NSSCO Chemistry (6117) Exam

6117

Official NSSCO Chemistry syllabus code

NIED NSSCO Chemistry syllabus

40 + 80 + 40

Paper 1 + Paper 2 + Paper 3 marks (total 160)

NIED NSSCO Chemistry scheme of assessment

30% + 50% + 20%

Paper 1 + Paper 2 + Paper 3 weighting

NIED NSSCO Chemistry syllabus

45 min + 1 h 30 + 1 h 15

Paper 1 + Paper 2 + Paper 3 durations

NIED NSSCO Chemistry syllabus

A–G

Available letter grades (U ungraded)

NIED NSSCO Chemistry grading and reporting

24 dm³

Molar gas volume at room temperature and pressure

NIED NSSCO Chemistry Topic 4.2

100

Free practice MCQs on this page

OpenExamPrep study adaptation

NSSCO Chemistry 6117 is assessed through three compulsory English papers: Paper 1 MCQ (40 marks, 45 min, 30%), Paper 2 structured theory (80 marks, 1 h 30 min, 50%), and Paper 3 Alternative to Practical (40 marks, 1 h 15 min, 20%), totalling 160 marks with grades A–G. The 100 questions on this page are an English-language MCQ study adaptation, not an official DNEA multi-paper simulation.

Sample NSSCO Chemistry (6117) Practice Questions

Try these sample questions to test your NSSCO Chemistry (6117) exam readiness. Each question includes a detailed explanation. Start the interactive quiz above for the full 100+ question experience with AI tutoring.

1Which subatomic particle has a relative charge of -1 and a negligible relative mass?
A.Proton
B.Neutron
C.Electron
D.Alpha particle
Explanation: Electrons have relative charge -1 and a mass about 1/1836 that of a proton. Protons are +1 with relative mass 1; neutrons are uncharged with relative mass 1.
2An atom of sodium has atomic number 11 and nucleon (mass) number 23. How many neutrons does it contain?
A.11
B.12
C.23
D.34
Explanation: Neutron number = nucleon number - atomic number = 23 - 11 = 12.
3Isotopes of the same element have:
A.The same mass number but different atomic numbers
B.The same number of protons but different numbers of neutrons
C.The same number of neutrons but different numbers of protons
D.Different numbers of electrons in a full outer shell
Explanation: Isotopes have the same proton (atomic) number but different neutron numbers, so different mass numbers.
4What is the electron arrangement of a neutral chlorine atom (atomic number 17)?
A.2, 8, 7
B.2, 8, 8
C.2, 7
D.2, 8, 17
Explanation: Chlorine has 17 electrons: 2 in the first shell, 8 in the second, and 7 in the third (2, 8, 7).
5Elements in the same Group of the Periodic Table have similar chemical properties mainly because they have:
A.The same number of electron shells
B.The same relative atomic mass
C.The same number of outer-shell electrons
D.The same number of protons
Explanation: Group members share the same number of valence (outer-shell) electrons, which largely determines bonding behaviour.
6Ionic bonding typically forms when:
A.Two non-metal atoms share electron pairs
B.A metal atom transfers electrons to a non-metal atom
C.Metal atoms share a sea of delocalised electrons only
D.Molecules attract by temporary dipoles
Explanation: Metals lose electrons to non-metals, forming cations and anions held by electrostatic attraction (ionic/electrovalent bonding).
7Which substance is a giant covalent structure?
A.Sodium chloride
B.Methane
C.Diamond
D.Copper
Explanation: Diamond is a giant covalent network of carbon atoms. NaCl is ionic; methane is simple molecular; copper is metallic.
8The relative formula mass (Mr) of CO2 is: (Ar: C = 12, O = 16)
A.28
B.32
C.44
D.48
Explanation: Mr(CO2) = 12 + (2 x 16) = 44.
9One mole of any substance contains approximately how many particles?
A.6.022 x 10^22
B.6.022 x 10^23
C.6.022 x 10^24
D.24 x 10^23
Explanation: The Avogadro constant is approximately 6.022 x 10^23 particles per mole (NIED NSSCO Chemistry).
10At room temperature and pressure, the molar gas volume used in NSSCO Chemistry calculations is:
A.22.4 dm3
B.24 dm3
C.22.4 cm3
D.1 dm3
Explanation: The NIED NSSCO Chemistry syllabus takes molar gas volume as 24 dm3 at rtp.

About the NSSCO Chemistry (6117) Exam

NSSCO Chemistry (6117) is Namibia’s Ordinary Level senior secondary chemistry qualification for Grades 10–11. The NIED syllabus covers scientific processes, matter and bonding, materials, stoichiometry, electrochemistry, chemical reactions, acids/bases/salts, qualitative analysis, metals, organic chemistry, and environmental and industrial chemistry (including Namibian water, ores and industry contexts).

Assessment

Paper 1: Theory multiple choice — 40 four-choice items, 40 marks, 45 minutes, 30%. Paper 2: Theory structured and free-response — 80 marks, 1 hour 30 minutes, 50%. Paper 3: Alternative to Practical (written) — 40 marks, 1 hour 15 minutes, 20%. Combined total 160 marks. All three papers compulsory. English papers.

Time Limit

Paper 1: 45 minutes; Paper 2: 1 hour 30 minutes; Paper 3: 1 hour 15 minutes

Passing Score

Letter grades A–G (U = ungraded). No single published numeric percentage pass mark in the NIED syllabus.

Exam Fee

DNEA per-subject NSSCO entry fee not confirmed from an official DNEA circular at time of writing — confirm with DNEA or your examination centre. Do not use NAMCOL tuition fees as a substitute. (Directorate of National Examinations and Assessment (DNEA); syllabus by Namibia Institute for Educational Development (NIED))

NSSCO Chemistry (6117) Exam Content Outline

Topics 1–3

Scientific Processes, Matter and Materials

Mathematical and experimental skills; particle nature, atomic structure, isotopes, Periodic Table, bonding and equations; types of materials, building and cleaning materials, and nano-materials.

Topics 4–6

Stoichiometry, Electrochemistry and Chemical Reactions

Mole concept and quantitative calculations (including 24 dm³ molar gas volume at rtp); electrolysis and electroplating; energetics, rates, reversible reactions and redox.

Topics 7–9

Acids, Qualitative Analysis and Metals

Acid–base properties, oxides, neutralisation and salt preparation; ion and gas identification tests; metal properties, reactivity series, extraction and uses, including Namibian copper, lead and uranium ores.

Topics 10–11

Organic, Environmental and Industrial Chemistry

Hydrocarbons, alcohols, carboxylic acids, esters and polymers; water and air in Namibia; commercial gas preparation; air pollution; chemical industrial plants.

How to Pass the NSSCO Chemistry (6117) Exam

What You Need to Know

  • Passing score: Letter grades A–G (U = ungraded). No single published numeric percentage pass mark in the NIED syllabus.
  • Assessment: Paper 1: Theory multiple choice — 40 four-choice items, 40 marks, 45 minutes, 30%. Paper 2: Theory structured and free-response — 80 marks, 1 hour 30 minutes, 50%. Paper 3: Alternative to Practical (written) — 40 marks, 1 hour 15 minutes, 20%. Combined total 160 marks. All three papers compulsory. English papers.
  • Time limit: Paper 1: 45 minutes; Paper 2: 1 hour 30 minutes; Paper 3: 1 hour 15 minutes
  • Exam fee: DNEA per-subject NSSCO entry fee not confirmed from an official DNEA circular at time of writing — confirm with DNEA or your examination centre. Do not use NAMCOL tuition fees as a substitute.

Keys to Passing

  • Complete 500+ practice questions
  • Score 80%+ consistently before scheduling
  • Focus on highest-weighted sections
  • Use our AI tutor for tough concepts

NSSCO Chemistry (6117) Study Tips from Top Performers

1Drill mole calculations early: mass ↔ moles, concentration in mol/dm³ and g/dm³, empirical/molecular formulae, and gas volumes using 24 dm³ at rtp.
2Memorise qualitative tests: flame/precipitate tests for cations with NaOH/NH₃, anion tests, and gas tests (H₂, O₂, CO₂, NH₃, Cl₂) — Paper 3 expects familiarity without Annexe B notes supplied.
3Link bonding to properties: ionic lattices vs simple molecular vs giant covalent vs metallic structures, and how that explains melting point, solubility and conductivity.
4Learn Namibian context facts from Topic 9 and 11: chalcopyrite, galena, uranium oxide ores; water distribution, dams and desalination limits; air pollution sources.
5Practise interpreting rate, energetics and electrolysis data — Paper 2 and Paper 3 reward reading tables, graphs and half-equations, not only recall.

Frequently Asked Questions

What is NSSCO Chemistry 6117?

Syllabus 6117 is the Namibia Senior Secondary Certificate Ordinary Level Chemistry syllabus published by NIED for Grades 10–11 and examined by DNEA. It covers eleven topic areas from scientific processes and matter through stoichiometry, reactions, metals, organic chemistry, and environmental/industrial chemistry.

What is the paper structure for NSSCO Chemistry?

All candidates take three compulsory papers: Paper 1 multiple choice (40 marks, 45 minutes, 30%), Paper 2 structured theory (80 marks, 1 hour 30 minutes, 50%), and Paper 3 Alternative to Practical written paper (40 marks, 1 hour 15 minutes, 20%), for a combined total of 160 marks. Papers are set in English.

What grades are awarded for NSSCO Chemistry?

Results are reported on letter grades A–G (U = ungraded). The NIED syllabus does not publish a single numeric percentage pass mark; grade boundaries are set by the examining authority for each series.

How much does NSSCO Chemistry entry cost?

A verified DNEA per-subject NSSCO entry fee was not confirmed from an official DNEA circular at the time this page was written. Confirm current fees with DNEA or your examination centre. Do not treat NAMCOL tuition or course fees as the examination entry fee.

Are these official DNEA examination questions?

No. Official NSSCO Chemistry uses Paper 1 MCQ plus structured theory and an Alternative to Practical paper. This bank is an original English-language MCQ study adaptation aligned to syllabus 6117 for practice of core chemistry knowledge, stoichiometry calculations, and practical-skill judgment — it does not simulate Papers 2–3 format.

What molar gas volume does the syllabus use?

The NIED NSSCO Chemistry syllabus takes the molar gas volume as 24 dm³ at room temperature and pressure for stoichiometric gas calculations. Questions converting volumes between different temperatures and pressures are not set.