Main constituent of bone ash is____________________?

Related Mcqs:

1. The main constituent of bones is ______________________?

   A. CaF2
   B. Ca3(PO4)2
   C. CaCO3
   D. CaCl2

2. Alcohols are not suitable as diesel engine fuel because the cetane number of alcohols is____________________?

   A. Very low which prevents their ignition by compression
   B. Very high which prevents their ignition by compression
   C. Zero
   D. None of these

3. The surface tension of a liquid, at critical temperature is____________________?

   A. Indeterminate
   B. Zero
   C. Infinity
   D. Same as that at any other temperature

4. Corrosion is____________________?

   A. A physical phenomenon
   B. A chemical phenomenon
   C. Same as erosion
   D. An uncontrollable phenomenon

5. One face of a furnace wall is at 1030°C and the other face is exposed to room temperature (30°C). If the thermal conductivity of furnace wall is 3 W. m-1. k-1 and the wall thickness is 0.3 m, the maximum heat loss (in W/m) is____________________?

   A. 100
   B. 900
   C. 9000
   D. 10000

6. Ultimate strength in tension as compared to that in shear for steel is____________________?

   A. Half
   B. One third
   C. One and half times
   D. One fourth

7. The trace metal present in insulin is____________________?

   A. Cu
   B. Zn
   C. Fe
   D. Ni

8. For an ideal gas, Cp – Cv is____________________?

   A. R
   B. -R
   C. 0
   D. (3/2) R

9. Which of the following is an acidic constituent of B.F. slag ?

   A. SiO2
   B. FeO
   C. MgO
   D. CaO

10. _______________ is a non volatile film forming constituent of a paint ?

    A. Thinner
    B. Dryer
    C. Drying oil
    D. None of these