A customs duty or due is the indirect tax levied on the import or export of goods in international trade. In economic sense, a duty is also a kind of consumption tax.A duty levied on goods being imported is referred to as an import duty.Similarly, a duty levied on exports is called an export duty.A tariff, which is actually a list of commodities along with the leviable rate (amount) of customs duty, is popularly referred to as a customs duty. customs duty or due is the indirect tax levied on the import or export of goods in international trade. In economic sense, a duty is also a kind of consumption tax.
1 A variety of substances are used in lithium batteries, but a common combination is a lithium cobalt oxide cathode and a carbon anode. 2  Lead-acid battery (rechargeable) : This is the chemistry used in a typical car battery. Zinc-carbon battery: The zinc-carbon chemistry is common in many inexpensive AAA, AA, C and D dry cell batteries. 2  The anode is zinc, the cathode is manganese dioxide, and the electrolyte is ammonium chloride or zinc chloride. 3  Alkaline battery: This chemistry is also common in AA, C and D dry cell batteries.
Battery acid could refer to any acid used in a chemical cell or battery, but usually this term s applied to describe the acid used in a lead-acid battery, such as is found in a motor vehicle. Answer: Car or automotive battery acid is 30-50% sulfuric acid (H2SO4) in water. Usually the acid has a mole fraction of 29%-32% sulfuric acid, density of 1.25â1.28 kg/L and concentration of 4.2â5 mol/L. Battery acid has a pH of approximately 0.8. Lead-Acid Battery Construction and Chemical Reaction. A lead-acid battery consists of two lead plats separated by a liquid or gel containing sulfuric acid in water. The battery is rechargeable, with charging and discharge chemical reactions. When the battery is being used (discharged), electrons move from the negatively-charged lead plate to the positively-charged plate.