Alpine tunnels are closed tunnels. In the past 30 yrs not even a single accident has been recorded for there is one accident in the railroad system. Even in case of a fire accident it is possible to shift the passengers into adjacent wagons and even the living fire can be detected and extinguished with in the duration of 30 min.

1. true

2.false

3.true

true

1) Can't say (bz it is said that no accident has been recoreded bt it does not mean that noaccident can occur. It can occur, there is a possibility of it.)

2) True (bz it is said that fire can be extinguished in 30 minutes.)

3) Can't say (bz nothins is said about rail shutters)

1. False.

2. Cannot say because the maximum limit for fire prevailing is 30mins, it may well be put off earlier than that.

3. Cannot say - nothing is mentioned on that.