Ethylamine (C₂H₅NH₂) can be obtained from N-ethylphatalimide on treatment with :

A bacterial infection in an internal wound grows as N'(t) = N₀ exp(t), where the time t is in hours. A does of antibiotic, taken orally, needs 1 hour to reach the wound. Once it reaches there, the bacterial population goes down as $${{dN} \over {dt}} = - 5{N^2}$$. What will be the plot of $${{{N_0}} \over N}$$ vs. t after 1 hour?

Major products of the following reaction are :

Amylopectin is compound of :