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Process Control and Instrumentation

Process Control and Instrumentation
Sub-zero temperature (< 0°C) can be measured by a constant volume gas thermometer employing

Nitrogen
Hydrogen
Helium
None of these

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Process Control and Instrumentation
Platinum resistance thermometer can be used upto antimony point which is __________ °C, and is the temperature of equilibrium between solid antimony & liquid antimony at normal atmospheric pressure.

1261.93
961.93
1064.43
630.74

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Process Control and Instrumentation
Meleoid gauge measures the __________ pressure.

Sub-atmospheric
Atmospheric
Very high
Positive

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Process Control and Instrumentation
Zirconia probe is used for the continuous measurment of __________ flue gases going out of the furnace.

Temperature of
Carbon monoxide in
Oxygen in
Carbon dioxide in

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Process Control and Instrumentation
Optical activity of a solution can be determined using a

Refractrometer
Polarimeter
Dilatometer
Polarograph

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Process Control and Instrumentation
Alphatron measures pressure __________ microns.

< 3
< 1
< 0.1
> 3

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