4. d and f- block elements — Chemistry STD 12 Science — Question
CBSE BoardEnglish MediumSTD 12 ScienceChemistry4. d and f- block elements1 Mark
MCQ
Which of the following metals make the most efficient catalyst
✓
Transition
B
Alkali
C
Alkaline earth
D
Coloured metals
✓
Answer
Correct option: A.
Transition
a Transition metals can form unstable intermediate products with suitable reactants. These intermediate products lower the activation energy of the reaction which makes the reaction faster. So, transition elements are the most efficient catalysts.
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