Q:

Which of the following methods is the correct one for using pepprament oil to detect the source of air leakage?

A) Put the pepprament oil on the suspected joint and wait for the bubbles B) Put the pepprament oil on the suspected joint and wait for it to get sucked
C) Put the pepprament oil on the suspected joint and check for pepprament odour at the discharge of air ejector D) Put the pepprament oil on the suspected joint, pepprament oil being coloured will change the colour of condensed water
 

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