Initial pressure of oxygen introduced into the ‘bomb’ of the bomb calorimeter for determination of calorific value of coal/fuel oil may be around _____________ atm?

Related Mcqs:

1. During its calorific value determination by bomb calorimeter, coal is combusted by _________________?

   A. Air
   B. Oxygen
   C. Oxygen enriched air
   D. None of these

2. Bomb calorimeter is used to determine the (where, GCV – Gross Calorific Value. NCV – Net Calorific Value.) ?

   A. GCV at constant pressure
   B. GCV at constant volume
   C. NCV at constant pressure
   D. NCV at constant volume

3. Bomb calorimeter is used for the determination of calorific value of the _____________ fuels?

   A. Gaseous
   B. Solid
   C. Liquid
   D. Both B. and C.

4. A fuel containing carbon and carbon monoxide (but containing no hydrogen or its compounds) is burnt in pure oxygen at constant pressure. Its gross calorific value as compared to net calorific value will be_________________?

   A. More
   B. Less
   C. Same
   D. Data insufficient; can’t be predicted

5. Calorific value of coal middling generated in coal washeries during washing of coal may be around _____________ Kcal/kg?

   A. 1000
   B. 4000
   C. 6000
   D. 8000

6. The main reason for making the copper calorimeter (used in bomb calorimeter) silvery white and shining/polished is to___________________?

   A. Minimise its corrosion
   B. Avoid radiation heat loss
   C. Make it look attractive
   D. None of these

7. Calorific value as determined by bomb calorimeter is the__________________?

   A. Higher calorific value at constant volume
   B. Gross calorific value at constant pressure
   C. Lower calorific value at constant pressure
   D. Net calorific value at constant volume

8. Gasification of the solid fuel converts its organic part into combustible by interaction with air/oxygen and steam so as to obtain a secondary gaseous fuel of high calorific value having no ash. Gasification reactions are normally carried out at about _____________ °C?

   A. 400-500
   B. 900-1000
   C. 1400-1500
   D. 1700-1800

9. Bomb calorimeter can be used to determine the _____________ of the coal?

   A. Sulphur content
   B. Calorific value
   C. Both A. & B.
   D. Neither A. nor B.

10. Junker’s calorimeter is used to determine the calorific value of______________________?

    A. Pulverised coal
    B. Gaseous fuels
    C. Fuel oil
    D. None of these