A measuring cylinder resting on an electronic balance contains a liquid as shown in diagram 1. A small solid object X is gently lowered into the liquid and no liquid…

A chemist used electrolysis to electroplate a pure copper rod with a layer of silver. The concentration of metal ions in the electrolyte was kept constant. Which row in the…

The labels 1, 2 and 3 in the following diagram represent cellular processes. The shaded areas represent processes that can happen without the use of energy provided by cellular respiration.…

The non-zero numbers p and q are such that p + q = 3 ( p – q )What is the value of PQ /P2 +Q2 ? Answer: 4) B

The diagram shows the forces acting on a cyclist as she accelerates at 4.0 m s –2 on a straight, horizontal section of road. The constant resistive forces are air…

A cleaning solution is used to remove limescale, CaCO 3, from bathroom surfaces. When the solution is sprayed onto the limescale, effervescence (fizzing) occurs and the solid limescale begins to…

The diagram shows some stages involved in genetic engineering. Which row correctly identifies W, X, Y and Z? Answer: 1) E W is a section of the chromosome. It is…