# If an electric train runs in the direction from North to South with a speed of 150 km/hr covering 2000 km, then in which direction will the smoke of its engine go ?

 [ A ]    N$\rightarrow$S [ B ]    S$\rightarrow$N [ C ]    E$\rightarrow$W [ D ]    No direction
 Answer : Option D Explanation : An electric train does not emit smoke. Therefore, no smoke will be going in any of the direction