Attendant Operator is a simple e-Book for ITI & Engineering Course Attendant Operator (Chemical Plant). It contains objective questions with underlined & bold correct answers MCQ covering all topics including all about the latest & Important about Hack-sawing marking punching Chiseling Filing Drilling countersinking counter boring reaming Taping melting point boiling point compare properties of metals & alloys Fire extinguisher pipe joints fittings valves on pipes dismantling overhauling cleaning &assembling valves centrifugal pump gear pump metering pump screw pump multistage compressor fluid flow heat transfer and mass transfer operations Shell and tube Heat exchangers evaporators Distillation columns manufacturing processes and pressure vessels petroleum.