Select the wrong pair from the following given below
A. Strengite : FePO4·2H2O
B. Variscite : AlPO4·2H2O
C. Gibbsite : Al2O3·3H2O
D. Hematite : FeOOH
Answer: Option D
Solution(By Examveda Team)
Strengite is a relatively rare iron phosphate mineral with the formula FePO4·2H2O.Variscite is a hydrated aluminum phosphate mineral with the formula AlPO4·2H2O. it is a relatively rare phosphate mineral.
Gibbsite is one of the mineral forms of aluminium hydroxide with the chemical formula Al2O3·3H2O. It is an important ore of aluminium.
Hematite is a heavy and relatively hard oxide mineral, ferric oxide (Fe2O3), that constitutes the most important iron ore because of its high iron content (70 percent) and its abundance.
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