| Exam date | Questions | Time | Maximum marks |
|---|---|---|---|
| 6 February 2021 | 32 | 60 minutes | 120 |
This pandemic-era paper belongs to the IOQC 2020–21 session and was held in 2021. It is useful chemistry practice, but it is not a 60-question, two-hour NSEC mock.
Read the organiser’s worked solutions
The separate solution PDF above explains this IOQC paper. Work through the paper first, then compare your approach. Use the answer key to check choices and the solution document to examine the method.
Make the review count
For each missed problem, write the governing chemical idea before repeating the calculation. Check units, charges, reaction stoichiometry and which assumptions the question permits. In multiple-correct questions, justify every option independently.
Keep a short error log: question number, cause of error, corrected reasoning and a date to try it again. A solved paper becomes useful when you can reproduce the reasoning later.
Sources & verification
Exam information checked 20 October 2026. Subsequent official notices take precedence.