Directions : Following question consists of a statement followed by three arguments I, II and III . You have to decide which of the arguments is a STRONG arguments and which is a WEAK Argument. Statement : Should coal engines be replaced by electric engines in trains? Arguments : I. Yes. Coal engines cause a lot of pollution. II. Yes. Electric engines are good on performance, easy to operate and low on maintenance. III. No. India does not produce enough electricity to fulfil its domestic needs also.

The correct answer is: Only I is strong.

Argument I is strong because it is based on evidence. Coal engines are a major source of air pollution, and air pollution is a serious health hazard. Argument II is also strong because it is based on evidence. Electric engines are more efficient than coal engines, and they produce less pollution. However, argument III is weak because it is based on an assumption. The assumption is that India does not produce enough electricity to fulfill its domestic needs. However, this assumption is not necessarily true. India is a major producer of electricity, and it is possible that India could produce enough electricity to power electric trains.

In conclusion, only argument I is strong. Arguments II and III are weak because they are based on assumptions.