MCQ
Which of the following elements is a lanthanide (Rare–earth element)
- ACadmium
- BCalifornium
- ✓Cerium
- DCesium
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The order of decreasing reactivities of these alcohols towards nucleophilic substitution with $HBr$ is
Reactant $P, Q$ and reagent used in above reaction are
Find out the correct statement from the options given below for the above $2$ reactions.