Multiple choice questions
There are two papers for each tier of entry, Foundation and Higher. Each paper is split into two sections, Section A and Section B.
Section | Type(s) of questions | Marks per question |
A | Multiple choice | 1 |
B | Short answer, extended response | 1 to 5, 6 |
Section | A |
---|---|
Type(s) of questions | Multiple choice |
Marks per question | 1 |
Section | B |
---|---|
Type(s) of questions | Short answer, extended response |
Marks per question | 1 to 5, 6 |
The short answer questions contain different styles, including:
- structured questions
- maths questions
- practical questions
Multiple choice questions appear in both exam papers, and at both tiers. Multiple choice questions are asked as questions, often starting with 鈥榃hat is...?鈥 or 鈥榃hich of these...?鈥.
You have four options to choose from in a multiple choice question. You must only choose one of these options, by writing your answer (A, B, C, or D) in a box.
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Sample question 1 - Foundation
Question
Ammonium phosphate is used as a fertiliser. The formula for ammonium phosphate is:
(NH4)3PO4
Which elements in ammonium phosphate are essential elements for plant growth? [1 mark]
A nitrogen and hydrogen
B nitrogen and phosphorus
C hydrogen and oxygen
D phosphorus and oxygen
OCR Gateway Science, GCE Chemistry, Paper J248, 2016.
B [1]
Sample question 2 - Higher
Question
Urea is a fertiliser. The formula for urea is:
(NH2)2CO
A student makes one mole of urea from two moles of ammonia.
What is the mass of urea that the student makes? [1 mark]
A 43.0 g
B 44.0 g
C 58.0 g
D 60.0 g
OCR Gateway Science, GCE Chemistry, Paper J248, 2016 - Higher.
D [1]
Sample question 3 - Higher
Question
A student is making a fertiliser called potassium nitrate, KNO3.
Look at the equation for the reaction she uses.
KOH + HNO3 鈫 KNO3 + H2O
The relative formula masses, Mr, of each compound are shown in the table.
Compound | Formula | Relative formula mass |
potassium hydroxide | KOH | 56.1 |
nitric acid | HNO3 | 63.0 |
potassium nitrate | KNO3 | 101.1 |
water | H2O | 18.0 |
Compound | potassium hydroxide |
---|---|
Formula | KOH |
Relative formula mass | 56.1 |
Compound | nitric acid |
---|---|
Formula | HNO3 |
Relative formula mass | 63.0 |
Compound | potassium nitrate |
---|---|
Formula | KNO3 |
Relative formula mass | 101.1 |
Compound | water |
---|---|
Formula | H2O |
Relative formula mass | 18.0 |
What is the atom economy for the reaction to make potassium nitrate? [1 mark]
Assume that water is a waste product.
A 15.1%
B 47.1%
C 52.9%
D 84.9%
OCR Gateway Science, GCE Chemistry, Paper J248, 2016 - Higher.
D [1]