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Process Control and Instrumentation

Process Control and Instrumentation
Composition of natural gas is determined by the

Both B and C
Haldane apparatus
Mass spectrometer
Chromatograph

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Process Control and Instrumentation
__________ temperature scale assigns 0° to the 'ice point' and 80° to the 'steam point'

Celcius
Rankine
Reumur
Farenhite

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Process Control and Instrumentation
Which of the following shows maximum dip effect (indicating reverse direction of temperature change)?

Mercury thermometer
Radiation pyrometer
Bimetallic thermometer
Thermocouple

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Process Control and Instrumentation
Emf developed by a thermocouple, while measuring a temperature of 600°C is about 5.5 mV. The type of thermocouple used is

Chromel-alumel
Either A, B or C
Platinum-platinum+rhodium
Iron-constantan

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Process Control and Instrumentation
Ordinary mercury in glass thermometer is used for measuring temperature upto 120°C. However, for measuring higher temperature upto __________ °C, thermometer is made by filling nitrogen under pressure above the mercury, which stops the evaporation of mercury and reduces the chance of broken thread of mercury.

700
550
250
350

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

Refractrometer
Polarograph
Polarimeter
Dilatometer

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