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which of the following an inorganic compound?

CH3(CH2)3CH3 pentane

C6H12O6 glucose

C4H10 butane

H2O water molecule

Verified Answer :

An organic compound is one which consists of a chain of carbon atoms with other atoms bonded to the chain.

Pentane has 5 carbon atoms with surrounding hydrogens.
glucose is a chain of 6 carbon atoms
butane is similar to pentane

water has no carbon atoms, and the central atom is oxygen ---> therefore it is inorganic!