May/June 2026 Paper 13

2026 · 40 questions · 40 parts · 40 marks

0/40 marks

0Correct0Partial0Wrong40Unattempted

Filters0 active

Questions

Select a part to jump to its question

–/1 mk

–/1 mk

–/1 mk

–/1 mk

–/1 mk

–/1 mk

–/1 mk

–/1 mk

–/1 mk

–/1 mk

–/1 mk

–/1 mk

–/1 mk

–/1 mk

–/1 mk

–/1 mk

–/1 mk

–/1 mk

–/1 mk

–/1 mk

–/1 mk

–/1 mk

–/1 mk

–/1 mk

–/1 mk

–/1 mk

–/1 mk

–/1 mk

–/1 mk

–/1 mk

–/1 mk

–/1 mk

–/1 mk

–/1 mk

–/1 mk

–/1 mk

–/1 mk

–/1 mk

–/1 mk

–/1 mk

37Percentage Yield Atom EconomyHard1 mark

2-methyl-1-bromopropane is reacted with a reagent under certain conditions to form primary amine Z. The reaction produces 4.50 g of Z with a 56.0% yield. [

A_{r}

: C, 12.0; H, 1.0; Br, 79.9; N, 14.0] Which row is correct?

	reagent and conditions for reaction	mass of 2-methyl-1-bromopropane used in reaction / g
A	KCN in ethanol with heat	8.04
B	KCN in ethanol with heat	15.07
C	NH $_{3}$ in ethanol heated under pressure	8.04
D	NH $_{3}$ in ethanol heated under pressure	15.07