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Practise

Question bank

Original exam-style questions, mapped to your syllabus. Answers are checked for mathematical equivalence and every attempt updates your mastery.

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12 questions

SA-AC-AK-0011 markL1 FoundationCalculatorRadical mechanism

The initiation step in the chlorination of methane is

Salam Academy Original Practice · Proposed mark scheme

SA-AC-AK-0121 markL1 FoundationCalculatorRadical mechanism

A free radical is a species with

Salam Academy Original Practice · Proposed mark scheme

SA-AC-AK-0021 markL2 StandardCalculatorRadical mechanism

Which is a termination step?

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SA-AC-AK-0031 markL2 StandardCalculatorRadical mechanism

Free-radical substitution needs

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SA-AC-AK-0041 markL2 StandardCalculatorFuels

Alkanes are unreactive because

Salam Academy Original Practice · Proposed mark scheme

SA-AC-AK-0051 markL2 StandardCalculatorFuels

Balance:

\mathrm{C_{10}H_{22}\rightarrow C_8H_{18}+C_xH_4}

. Find

x

.

Salam Academy Original Practice · Proposed mark scheme

SA-AC-AK-0061 markL2 StandardCalculatorFuels

Catalytic cracking uses

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SA-AC-AK-0081 markL2 StandardCalculatorOzone

In the stratosphere, CFCs release

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SA-AC-AK-0101 markL2 StandardCalculatorFuels

Incomplete combustion of alkanes produces

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SA-AC-AK-0071 markL3 ExamCalculatorRadical mechanism

A disadvantage of making chloromethane by free-radical substitution is

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SA-AC-AK-0091 markL3 ExamCalculatorOzone

One chlorine radical can destroy many ozone molecules because

Salam Academy Original Practice · Proposed mark scheme

SA-AC-AK-0112 marksL3 ExamCalculatorFuels

Balance:

\mathrm{C_7H_{16}+\_\,O_2\rightarrow7CO_2+8H_2O}

. What is the coefficient of

\mathrm{O_2}

?

Salam Academy Original Practice · Proposed mark scheme