Chemical Engineering Basics
Function of feed check valve in a boiler is to

Prevent the back flow of water
Facilitate circulation of high pressure feed water
Check the water level in the boiler drum
Regulate the water flow to boiler

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Chemical Engineering Basics
Which of the following are made out of the carbon steel having carbon content of 0.9 to 1% ?

Forgings like can shaft, structural steel plate, threading dies and drawing dies
Cutlery, screws, rivets and files
Mandrels, twist drills, small lathe tools and razors
Small punches, broaches reamers and springs

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