IGCSE O Level Chemistry Online Tests
Properties Bases and Reactions MCQ (Multiple Choice Questions) PDF Download
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Properties Bases and Reactions MCQs: Questions and Answers PDF Download
What is true about bases (OH-)?
- they are corrosive
- they turn litmus from blue to red
- they turn litmus from red to blue
- they are non-metal oxides
An alkali (OH-) is a
- water soluble base
- water insoluble base
- oil soluble base
- oil insoluble base
NH4Cl(s) + NaOH →
- Na2CO3 + H2+NO2
- Na2CO3.(H2O)5 + HCl
- NaCl + H2O + NH3
- NaCl + HNO3
A base is a class of chemical substances which includes all
- metal oxides
- metal hydroxides
- non-metal oxides
- none of above
In the presence of phenolphthalein, alkali shows
- blue color
- violet color
- pink color
- green color
IGCSE O Level Chemistry Practice Tests
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