Measurement of sub-zero Celsius temperature in industry is done most commonly by __________________?

Related Mcqs:

1. Thermodynamic Celsius scale of temperature measurement is________________?

   A. Defined on the basis of melting point of ice and evaporation temperature of water vapor
   B. Defined on the basis of melting point of ice and condensation temperature of water vapor
   C. Having an interval of 100° between ice point to steam point
   D. Both B. and C.

2. Continuous shell temperature measurement in a liquid-liquid heat exchanger is done by a __________________?

   A. Thermocouple
   B. Resistance thermometer
   C. Mercury in glass thermometer
   D. Vapor pressure thermometer

3. Continuous measurement of moisture content of paper in paper industry is done by measuring the_________________?

   A. Thermal conductivity through the paper
   B. Electrical resistance through the paper
   C. Magnetic susceptibility
   D. None of these

4. A constant volume gas thermometer employing ______________ is used to measure sub-zero (i.e., < 0°C) temperature?

   A. Helium
   B. Hydrogen
   C. Nitrogen
   D. None of these

5. _______________ thermometer cannot measure sub-zero (< 0° C) temperature ?

   A. Mercury in glass
   B. Bimetallic
   C. Vapor pressure
   D. Resistance

6. Sub-zero temperature (< 0°C) can be measured by a constant volume gas thermometer employing ?

   A. Helium
   B. Nitrogen
   C. Hydrogen
   D. None of these

7. Mercury thermometer is commonly used for low temperature measurement. The freezing point and boiling point of mercury are respectively _____________ °C?

   A. – 39 and 350
   B. – 51 and 439
   C. – 79 and 395
   D. – 10 and 425

8. Measurement of pressure in ammonia reactor is done by __________________?

   A. Bourdon gauge
   B. U-tube manometer
   C. Inclined tube manometer
   D. Pirani gauge

9. Continuous measurement of specific gravity of a liquid is done by __________________?

   A. Hydrometer
   B. Contact-type electric indicators
   C. Displacement meter
   D. Both A. and C.

10. Temperature measurement by optical pyrometer is done above ____________ point, which is 1063°C ?

    A. Antimony
    B. Gold
    C. Silver
    D. Nickel