There is/ are in the refrigerator.

There is one dozen of eggs.
There are 12 oranges!!
There is one lettuce
There is one bottle of milk
There is a carton of juice
There is a cola
There are 8 treys of meat
There is a chiken
There  is one mayonnaise
There is a mustard
There are some bacon
There  are some ham
There is a dressing
There is a ice cream
There are 2 bottles of yogurt