Previous-year papers,
decoded - not just dumped.

Knowing a name is only the start.

Question 2(v) matches kidney structures to functions.

Explain what happens in the apparatus.

Question 2(i) asks how ammonia is separated and what the fountain experiment shows.

Seven options meant 35 possible selections.

Section B asks for four whole questions, not a selection of convenient subparts.

The lens calculation joined two situations.

Question 5(i) changes the object position and the image size.

A neat cell needs the right chromosome count.

Question 3(v) asks for an animal cell at metaphase with four chromosomes.

Keep calculation assumptions visible.

Question 4(i) gives a molecular mass of 6 from the supplied gas masses.

The discount condition changed the bill.

In Question 7(iii), only an article bought in a quantity of ten or more receives the discount.

A large angle does not guarantee total reflection.

Question 3(i) sends light from water into glass.

Be explicit when counting chromosomes.

Question 8(v) shows anaphase with eight daughter chromosomes in the whole cell and four at each pole.

Not every product remains a gas.

Question 7(iii) burns ammonia in excess oxygen.

Cutting a solid creates new surfaces.

Question 2(ii) asks for the area of both cylinder halves and their painting cost.

The arrow decides the useful distance.

Question 1(iii) shows a load moving along an incline.

The heart arrows tell you the phase.

Question 8(v) shows blood leaving the ventricles.

Recall and calculation both had a place.

Question 6(i) asked for definitions and a law; Question 6(ii) asked for a molecular formula.

Precision instructions differed by question.

Question 3(i) required roots to one decimal place.

Equal heat capacity changes the comparison.

Question 3(iv) gives two bodies with the same thermal capacity but different masses.