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7.1 Carbon compounds as fuels and feedstock

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Question 19

A technician compares three hydrocarbons. Sample P has the smallest molecules, sample Q has intermediate-sized molecules, and sample R has the largest molecules.

How should the samples be ordered from most to least flammable?

Select the correct order.

[1]
A

R, Q, P

B

P, R, Q

C

Q, P, R

D

P, Q, R

Markscheme

7.1 Carbon compounds as fuels and feedstock Questions

  1. GCSE
  2. /Chemistry
  3. /7.1 Carbon compounds as fuels and feedstock

91 exam-style questions on AQA GCSE Chemistry 7.1 Carbon compounds as fuels and feedstock, covering 7.1.1 Crude oil, hydrocarbons and alkanes, 7.1.2 Fractional distillation and petrochemicals, 7.1.3 Properties of hydrocarbons, and 7.1.4 Cracking and alkenes. Each one has a worked solution and a mark scheme showing where the marks go.

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