Related Mcqs:

1. __________________ of air does not increase with increase in temperature?

   A. Density
   B. Thermal diffusivity
   C. Viscosity
   D. Thermal conductivity

2. The temperature at which ferromagnetic material can no longer be magnetized by the outside forces, is termed as the____________________?

   A. Critical point
   B. Curie temperature
   C. Inversion temperature
   D. Eutectic temperature

3. The boiling & freezing points on a newly defined temperature scale in degree ‘D’ are 400°D & 100°D respectively. The temperature reading corresponding to 60°C on this new temperature scale will be equal to _____________ °D ?

   A. 140
   B. 180
   C. 240
   D. 280

4. Heating the Hypo-eutectoid steels to 30°C above the upper critical temperature line, soaking at that temperature and then cooling slowly to the room temperature to form a pearlite & ferrite structure is called_______________________?

   A. Tempering
   B. Hardening
   C. Annealing
   D. Normalising

5. The ratio of thermal & electrical conductivity is same for all the metals at the same temperature; and at around room temperature, this ratio is proportional to(where, T = absolute temperature, °K) ?

   A. T
   B. 1/T
   C. T2
   D. 1/T2

6. Evaporative cooling process employs a combination of cooling and humidification in which the____________________?

   A. Sensible heat is added
   B. Sensible heat is removed and the latent heat is added
   C. Latent heat is removed
   D. Sensible heat is added and latent heat is removed

7. Faraday’s law of electrolysis is related to the____________________?

   A. Cation speed
   B. Atomic number of the cation
   C. Equivalent mass of the electrolyte
   D. None of these

8. An oxidation process is accompanied with decrease in the____________________?

   A. Number of electrons
   B. Oxidation number
   C. Number of ions
   D. All A , B. & C.

9. An abrupt and sudden fall in the reading of barometer is an indication of the____________________?

   A. Storm
   B. Rain
   C. Clear weather
   D. Cold wave

10. In inventory control theory, the economic order quantity (EOQ) is the____________________?

    A. Lot size corresponding to break even analysis
    B. Average level of inventory
    C. Optimum lot size
    D. None of these