Which one of the following would not be formed by cracking the hydrocarbon C12H26? Answer: 10) C A – WrongThis is methane (a type of alkane). This can be produced.…

Which two of the following are produced by the complete combustion of fuels? 1 CH42 CO3 CO24 H2O5 He6 NH3 Answer: 10) D Be careful! It specifies “complete combustion of fuels”.…

A gene controls the production of chlorophyll in lettuce plants. The recessive allele of this gene blocks chlorophyll formation which prevents seedling development. Plants heterozygous for this gene were cross…

A uniform beam of length 60cm weighs 10N. Its centre of gravity (the point where its weight can be assumed to act) is at its centre. A weight of 800N…

The diagram shows two sets of parallel lines. Angles θ, α, β and γ are as marked. Which of the following statements are true? (shade all that apply). Answer: 10)…

Which one of these graphs could be a sketch of the graph of the function y = 2x? Answer: 10) B For this question, you can substitute values into the…