A high pressure boiler generates steam at a pressure greater than __________ kg/cm2.

A. 10

B. 30

C. 50

D. 80

Please do not use chat terms. Example: avoid using "grt" instead of "great".

You can do it
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  8. Dielectric
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  18. Which of the following does not discharge the dust collected as a dry solid?
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  20. Specific __________ is a dimensionless quantity.
  21. Sub zero treatment of steel is done to
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