Question
Iron is absorbed by plants in which of the following
forms? (a)Â Fe2+ (b)Â Fe4+ (c)Â Fe (d)Â Fe3+Solution
In soil iron is available in both forms Fe3+ and Fe2+ but mostly plants absorb it in Fe3+ form.Â
The difference between the compound interest and simple interest on a certain sum for 2 years at 12% per annum is 144. Find the principal amount.
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