Q1 · Difficulty 1/3
Which is a non-renewable energy resource?
- tidal
- coal
- solar
- wind
Show answer & explanation
✓ Answer: B — coal
Coal is a finite fossil fuel.
OCR · GCSE · Combined Science (Gateway / Twenty First Century)
Free OCR GCSE Combined Science (Gateway / Twenty First Century)
Practice Paper
8 mixed-difficulty practice questions in the style of real OCR GCSE papers — answers, mark-scheme-style explanations, and the official exam structure all on one page.
Take a Mini Mock →What the real OCR GCSE Combined Science (Gateway / Twenty First Century) paper looks like
Paper 1
Approximately 1 hour 30 minutes, ~70-100 marks. Covers Topics 1-4 of the specification.
Paper 2
Approximately 1 hour 30 minutes, ~70-100 marks. Covers Topics 5-8 of the specification.
Paper 3
Where applicable — e.g. Combined Science, Languages. Includes synoptic and applied questions.
Total exam time: ~3 hours across two or three papers.
Grading: Grades: 9 (highest) to 1 (lowest), with U (ungraded). A grade of 4 is a standard pass; 5 is a strong pass.
Grading: Grades: 9 (highest) to 1 (lowest), with U (ungraded). A grade of 4 is a standard pass; 5 is a strong pass.
Mini practice paper: 8 questions
Mixed-difficulty questions from across the Combined Science (Gateway / Twenty First Century) syllabus. Tap "Show answer" after each to check yourself.
Q2 · Difficulty 1/3
The Sun is classified as a:
- moon
- comet
- star
- planet
Show answer & explanation
✓ Answer: C — star
The Sun is a star.
Q3 · Difficulty 1/3
Which of these metals is stored under oil?
- Iron
- Potassium
- Copper
- Magnesium
Show answer & explanation
✓ Answer: B — Potassium
Award 1 mark. Group 1 metals react quickly with oxygen and water vapour in air, so they are kept under oil. The other options (Iron; Copper; and Magnesium) do not fit.
Q4 · Difficulty 1/3
In what order are the elements arranged in the modern periodic table?
- By date of discovery
- By colour
- By alphabetical name
- By atomic (proton) number
Show answer & explanation
✓ Answer: D — By atomic (proton) number
Award 1 mark. Each element has one more proton than the element before it. The other options (By date of discovery; By colour; and By alphabetical name) do not fit.
Q5 · Difficulty 1/3
The unit of resistance is the:
- ohm
- volt
- ampere
- coulomb
Show answer & explanation
✓ Answer: A — ohm
Resistance is measured in ohms.
Q6 · Difficulty 1/3
A microorganism that causes disease is a:
- decomposer
- pathogen
- producer
- predator
Show answer & explanation
✓ Answer: B — pathogen
Pathogens cause disease.
Q7 · Difficulty 1/3
Which energy resource depends most on the weather?
- Wind
- Nuclear
- Coal
- Natural gas
Show answer & explanation
✓ Answer: A — Wind
Award 1 mark. Wind turbines only generate when the wind blows at suitable speeds. The other options (Nuclear; Coal; and Natural gas) do not fit.
Q8 · Difficulty 1/3
What does a Sankey diagram show?
- How the price of energy changes over each year
- The useful and wasted energy transfers in a device
- Where power stations are located in the country
- The number of people using electricity each day
Show answer & explanation
✓ Answer: B — The useful and wasted energy transfers in a device
Award 1 mark. The width of each arrow is proportional to the amount of energy.
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OCR GCSE Combined Science (Gateway / Twenty First Century) FAQ
What does the OCR GCSE Combined Science (Gateway / Twenty First Century) exam look like?
The OCR GCSE Combined Science (Gateway / Twenty First Century) exam is structured across 3 components. Paper 1: Approximately 1 hour 30 minutes, ~70-100 marks. Covers Topics 1-4 of the specification. Paper 2: Approximately 1 hour 30 minutes, ~70-100 marks. Covers Topics 5-8 of the specification. Paper 3: Where applicable — e.g. Combined Science, Languages. Includes synoptic and applied questions. Total exam time: ~3 hours across two or three papers.
Can I download a free OCR GCSE Combined Science (Gateway / Twenty First Century) past paper?
Real OCR past papers are published directly by OCR on their official website. Kramizo doesn't redistribute copyrighted past papers, but we do generate free AI-written practice papers in the exact same style — same command words, same difficulty tier, same mark conventions. Use this practice paper as warm-up, then time yourself on official past papers before exam day.
How is OCR GCSE Combined Science (Gateway / Twenty First Century) graded?
Grades: 9 (highest) to 1 (lowest), with U (ungraded). A grade of 4 is a standard pass; 5 is a strong pass. Kramizo's practice questions are tagged with difficulty 1-3 mapping roughly to the lower, middle, and top grade boundaries you'll encounter in the real exam.