CHE OCR
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CHE OCR 6
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Question Answer Marks AO 
element Guidance 
1 (a) (i) 
Water flow AND condenser 
Water in at bottom and out at top 
AND condenser 
Flask and technique 
Pear-shaped/round-bottom flask 
AND reflux 
2 1.2 × 2 
DO NOT ALLOW conical flask, volumetric flask, 
beaker in place of round bottom/pear shaped flask 
Pear-shaped / 
Round-bottom 
flask 
H432/03 Mark Scheme Oct 2020 
7 
Question Answer Marks AO 
element Guidance 
(ii) Diagram showing knowledge of filtration under 
reduced pressure 
Dia...
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CHE OCR•CHE OCR
A Level Chemistry A H432 Q3 MS.pdf
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CHE OCR•CHE OCR
A Level Chemistry A H432 Q2 MS
- Other
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CHE OCR•CHE OCR