Why is someone IN a film but they are ON television?

In a cinema or theatre, which arm rest is yours?

In the word scent, is the ‘S’ silent or the ‘C’?

Why is there a ‘D’ in fridge, but not in refrigerator?

Why isn’t a fireman called a waterman?

Why are goods sent by ship called CARGO and those sent by lorry SHIPMENT?

Why is it called ‘rush hour’ when traffic moves at its slowest then?

How is it that noses RUN and feet SMELL?

If a pig loses its voice, is it disgruntled?