The acid(s) which is/are used in the manufacture of chemical fertilizers is/are
Nitric acid
Sulphuric acid
The table given below shows the acids and their usage:
AcidUsageAcetic AcidPickles and other food substancesCitric AcidFood preservation and in soft drinksSulphuric and Nitric AcidManufacture of chemical fertilizersSulphuric AcidAutomobile batteryTannic AcidProduction of ink and leather
The acids which are used in the manufacture of chemical fertilizers are nitric acid and sulphuric acid.