When making an instrument approach at the selected alternate airport, what landing minimums apply?

What action should you take if your DME fails at FL 240?

An abbreviated departure clearance “…CLEARED AS FILED…” will always contain the name

For aircraft other than helicopters, what minimum conditions must exist at the destination airport to avoid listing an alternate airport on an IFR flight plan when a standard IAP is available?

While on an IFR flight, a pilot has an emergency which causes a deviation from an ATC clearance. What action must be taken?