The newest 14 of 14 written questions. Open one to see it on the real paper.
On Fig. 2.1, write the letter X in the coolest part of the fractionating column.
See it on the paper →Table 11.2 shows the percentage (%) supply and demand for some of the different fractions obtained from crude oil. Table 11.2 fraction % supply % demand refinery gases 2 4 gasoline (petrol) 5 23 naphtha 8 5 kerosene 12 7 diesel oil 17 23 fuel oil 56 38 Suggest and explain which fraction is cracked to obtain more gasoli...
See it on the paper →State the name of the process shown in Fig. 8.1.
See it on the paper →Explain why it is possible to separate the substances in petroleum by fractional distillation.
See it on the paper →On Fig. 2.1, write the letter X in the coolest part of the fractionating column.
See it on the paper →Table 2.1 shows the uses of some of the fractions. Complete Table 2.1. Table 2.1 fraction use refinery gas bottled gas for heating gasoline naphtha feedstock for making chemicals diesel oil bitumen
See it on the paper →On Fig. 5.1 write the names of the missing fractions in their correct place.
See it on the paper →Explain why it is possible to separate the substances in petroleum by fractional distillation.
See it on the paper →Table 5.1 shows the uses of some of the fractions. Complete Table 5.1. Table 5.1 fraction use refinery gas bottled gas for heating gasoline fuel (petrol) in cars naphtha diesel oil
See it on the paper →State a use for gasoline.
See it on the paper →State one other useful product made from petroleum by fractional distillation.
See it on the paper →Which row matches the fractions to their uses?
See it on the paper →Use words and phrases from the list below to name the processes A to D in Fig. 2.1. Each word or phrase may be used once, more than once or not at all. Process C has been named for you. addition polymerisation catalytic addition cracking dehydration fractional distillation condensation polymerisation electrolysis oxida...
See it on the paper →In process A petroleum is separated into mixtures of hydrocarbons, such as naphtha. State the physical property of naphtha that enables it to be separated from the other hydrocarbon mixtures in process A.
See it on the paper →Fuel oil was often given as the correct fraction. However, a few candidates explained this in terms of having the most supply rather than identifying that the supply was greater than the demand.
— Examiner report, February/March 2024, 0654/42 Q11(d) (Cambridge)
Fractional distillation was not well known. Separation of petroleum was a common suggestion.
— Examiner report, May/June 2023, 0654/33 Q8(a)(ii) (Cambridge)
Boiling point was often correctly given as the reason why substances in petroleum can be separated.
— Examiner report, May/June 2022, 0654/43 Q2(a)(i) (Cambridge)
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