Inhibition of 5-lipoxygenase is useful in -
Cardiac failure
Bronchial asthma
Hepatic failure
Ahritis
Ans. is 'b' i.e., Bronchial Asthma Lipoxygenase acts on Arachidonic acid to release leukotrienes which are impoant inflammatory mediators. They are respnsible for the bronchospasm during asthma attack. o So as obvious any drug which inhibits 5 lipoxygenase will prevent the formation of Leukotrienes and will be useful in the tit of Asthma.