Related Mcqs:

1. To increase the speed of response of a pressure spring liquid or gas expansion thermometer, the clearance space between the thermometer bulb and the thermal well should not be filled with ________________?

   A. Air
   B. A metal powder or graphite
   C. Oil
   D. Mercury

2. For increased speed of response of an expansion pressure spring thermometer, the thermometer bulb should have a__________________?

   A. Large area but small mass
   B. High thermal conductivity
   C. Small specific heat
   D. All A , B & C

3. Working principle of mercury in glass thermometer is based on volumetric expansion of mercury with increase in temperature. Which of the following undergoes minimum volumetric expansion for a given temperature change ?

   A. Water
   B. Mercury
   C. Methyl alcohol
   D. Carbon-tetrachloride

4. 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?

   A. 250
   B. 350
   C. 550
   D. 700

5. Normal mercury thermometer can be used to measure a temperature of about 300°C. However, its maximum temperature measurement range can be increased upto about 500°C by__________________?

   A. Filling nitrogen under pressure in the stem
   B. Increasing the diameter of the tube
   C. Using steel tube in place of glass tube
   D. Accounting for the tube expansion

6. 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?

   A. 961.93
   B. 630.74
   C. 1064.43
   D. 1261.93

7. Which of the following filled system expansion thermometer has the capability to measure the lowest temperature ?

   A. Mercury in glass thermometer
   B. Mercury in steel thermometer
   C. Alcohol in glass thermometer
   D. Fused metal (Na or K) in steel thermometer

8. A bimetallic thermometer as compared to industrial mercury in glass thermometer has almost the same_________________?

   A. Temperature measuring range (- 40°C to 450°C)
   B. Accuracy (± 1% of span)
   C. Speed of response
   D. All a, b & c

9. Nitrogen gas constant volume thermometer is suitable for measuring a temperature of _____________ °C?

   A. 0-100
   B. < 0
   C. > 100
   D. > 50

10. 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