Daily Practice - 13+ Common Entrance
Common Entrance english, maths and science.
17th February 2026
- 1Biology: Cells, Microscopy and Genetics
A pupil views onion cells under a microscope after adding a drop of iodine solution to the slide. State why the iodine solution was added.
- 2Biology: Respiration, Digestion and Gas Exchange
State one way the alveoli are adapted for efficient gas exchange.
- 3Chemistry: Materials
The density of olive oil is 0.92 g/cm^3. State, with a reason, whether olive oil would float or sink in water (density 1.0 g/cm^3).
- 4Chemistry: Acids, Reactions and the Periodic Table
Describe the test for carbon dioxide gas, and state the positive result.
- 5Chemistry: The Periodic Table and Separating Mixtures
Explain why a pencil, not a pen, must be used to draw the baseline on chromatography paper.
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