On the basis of the reactions given below, identify the compound 'X'. Mention the name and chemical formulae of 'P','Q' and 'R'.

From the reactions given below, identify the most reactive and the less reactive metal among iron,copper and magnesium. Fe (s) + CuSO_4 (aq) rarr FeSO_4 (aq) + Cu (s) Mg (s) + FeSO_4 (aq) rarr MgSO_4 (aq) + Fe (s)

Find the roots of the quadratic equations given in Q-1 above by applying the quadratic formula.(i) 2x^2-7x+3=0

Given below is the scientific name of Mango. Identify the correctly written name. Mangifera Indica