MCQ
In which among the following pair both the elements are metalloids?
- A$Be, B$
- ✓$Si, Ge$
- C$B, C$
- D$Sn, Pb$
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Assertion $A$ :Phenolphthalein is a $pH$ dependent indicator, remains colourless in acidic solution and gives pink colour in basic medium
Reason $R$ : Phenolphthalein is a weak acid. It doesn't dissociate in basic medium.
In the light of the above statements, choose the most appropriate answer from the options given below.