IGCSE O Level Chemistry Practice Test 89
Evaporation Quiz Questions and Answers PDF Download - 89
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Evaporation Questions and Answers PDF Download: MCQ 89
When heating begins in miscible solutions, vapors formed will be of
- liquid, lower in boiling point
- liquid, higher in boiling point
- all liquids with a higher concentration of liquid having low boiling point
- none of above
Positive ions in a sea of electrons are found in
- ionic compounds
- covalent bonds
- metallic bonds
- dative bond
A substance which conducts electricity but is not changed during the electrolysis is
- electrode
- conductor
- insulator
- catalyst
Valency of all these ions is negative 1, except
- OH
- PO4
- NO3
- Br
An average size cigarette burns in 10 seconds in pure
- hydrogen
- oxygen
- carbon dioxide
- nitrogen
IGCSE O Level Chemistry Exam Prep Tests
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