can this chemical occur naturally?
No, it is not encountered naturally on Earth in anhydrous form, due to its great affinity for water.
Sulfuric acid
Pure sulfuric acid is not encountered naturally on Earth in anhydrous form, due to its great affinity for water. Dilute sulfuric acid is a constituent of acid rain, which is formed by atmospheric oxidation of sulfur dioxide in the presence of water – i.e., oxidation of sulfurous acid. When sulfur-containing fuels such as coal or oil are burned, sulfur dioxide is the main byproduct (besides the chief products carbon oxides and water).

Sulfuric acid is formed naturally by the oxidation of sulfide minerals, such as iron sulfide. The resulting water can be highly acidic and is called acid mine drainage (AMD) or acid rock drainage (ARD). This acidic water is capable of dissolving metals present in sulfide ores, which results in brightly colored, toxic solutions. The oxidation of pyrite (iron sulfide) by molecular oxygen produces iron(II), or :
most common cause of death in burn patients Infections being the most common  pneumonia, cellulitis, urinary tract infections and respiratory failure. what is burn? A burn is a type of injury to skin, or other tissues, caused by heat, cold, electricity, chemicals, friction, or radiation. what are the indications? Severe burns may indicate discomfort or complain of feeling pressure rather than pain, there are superficial burns, full-thickness burns. how is it caused by chemical? Chemicals like strong base or a strong acid can cause deep burns. can you name such chemicals? Sulfuric acid, sodium hypochlorite, halogenated hydrocarbons, hydrofluoric acid, formic acid. what type of acid is the first one? It is a mineral acid composed of the elements sulfur, oxygen and hydrogen, with molecular formula HSO. how is this react with water? It causes a hydration reaction.
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Sulfuric acid [SEP] Occurrence
Pure sulfuric acid is not encountered naturally on Earth in anhydrous form, due to its great affinity for water. Dilute sulfuric acid is a constituent of acid rain, which is formed by atmospheric oxidation of sulfur dioxide in the presence of water – i.e., oxidation of sulfurous acid. When sulfur-containing fuels such as coal or oil are burned, sulfur dioxide is the main byproduct (besides the chief products carbon oxides and water). Sulfuric acid is formed naturally by the oxidation of sulfide minerals, such as iron sulfide. The resulting water can be highly acidic and is called acid mine drainage (AMD) or acid rock drainage (ARD).