remains constant

increases

decreases

none of these

Halide torch

Sulphur sticks

Soap and water

All of these

Raise the pressure of the refrigerant

Raise the temperrature of the refrigerant.

Circulate the refrigerant through the refrigeration system

All of the above

0.1 ton

5 ton

10 ton

40 ton

Always less than unity

always more than unity

equal to 1

None of these