Question

Aspirin,gammexane,quinine,pencilin which is used as an insecticide

Answer 1

Hey there, 
-> Aspirin  is the common name of Acetylsalicylic acid, and it has a chemical formula of $C_9H_8O_4$ 
It is used in medications as a non-narcotic analgesic drug. It helps in relieving pain.
 
-> Gammaxene, and also Lindane, are both common names of Gamma Hexachlorocyclohexane. Its molecular formula is $C_6H_6Cl_6$


Gammaxene is used as an insecticide!  [Hence your answer] 

-> Quinine has a molecular formula $C_{20}H_{24}N_2O_2$  
It is used as a medicine to cure malaria.

-> Penicillin  is a group of antibiotics with the formula $C_9H_{11}N_2O_4S$ 
It is used as antibiotic for bacterial infections.   


Overall, your answer is Gammaxene. 


Hope it helps  
Purva   
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