About _________________ ton of coke is required in a cupola to produce one ton of casting ?

Related Mcqs:

1. One ton of refrigeration is defined as the heat rate corresponding to melting of one ton of ice in one ________________?

   A. Hour B. Day C. Minute D. Second...

2. COP of a refrigerator drawing 1 kW of power per ton of refrigeration is about____________________?

   A. 0.5 B. 3.5 C. 4.5 D. 8.5...

3. Phenolic water generated in coke ovens & by-product plant of a steel plant are disposed off by_________________?

   A. Quenching of hot coke B. Discharging in the river stream C. Filtration and recycling for cooling coke oven gas D. None of these...

4. Phenolic water generated in coke ovens & by-product plant attached to an integrated steel plant containing phenol in concentration of less than 100 mg/litre can be removed by_______________?

   A. Chlorination B. Treating in biological oxygen pond C. Chemical coagulation D. None of these...

5. Addition of small amount of ________________ to grey cast iron is done to produce nodular grey cast iron ?

   A. Manganese B. Phosphorous C. Magnesium D. Chromium...

6. Pure oxygen is mixed with air to produce an enriched air containing 50 volume % of oxygen. The ratio of moles of air to oxygen used is_________________?

   A. 1.72 B. 0.58 C. 0.5 D. 0.2...

7. In _______________ process, ions of salts react with water to produce acidity or alkalinity ?

   A. Hydration B. Hydrolysis C. Electrolysis D. Dialysis...

8. The amount of heat required to decompose a compound into its elements is _____________ the heat of formation of that compound from its elements?

   A. Less than B. More than C. Same as D. Not related to...

9. A rigid vessel containing three moles of nitrogen gas at 30°C is heated to 250°C. Assume the average capacities of nitrogen to be Cp = 29.1 J/mole.°C and, Cv = 20.8 J/mole.°C. The heat required, neglecting the heat capacity of the vessel, is__________________?

   A. 13728 J B. 19206 J C. 4576 J D. 12712 J...

10. The quantity of heat required to evaporate 1 kg of a saturated liquid is called __________________?

    A. Specific heat B. 1 Kcal C. Sensible heat D. Latent heat...