MCQOPTIONS
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MCQOPTIONS
This section includes 2 Mcqs, each offering curated multiple-choice questions to sharpen your Applied Chemistry knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
The coal sample contains=80%; H=4%; O=2%; N=12%; S=2%, the remainder is ash and then calculate the volume of air required for perfect combustion of 1kg of fuel assuming STP conditions. |
| A. | weight of oxygen required=10.65kg; volume of the oxygen=8725l |
| B. | weight of oxygen required=11.25kg; volume of the oxygen=8500l |
| C. | weight of oxygen required=11.25; volume of the oxygen=8200l |
| D. | weight of oxygen required=10.65kg; volume of the oxygen=8166.6l |
| Answer» E. | |
| 2. |
A sample of coal containing the following elements:C=90%; H=5%; ash=4%; weight of the coal burnt=0.90g; weight of the water taken=600g; water equivalent of bomb calorimeter=2000g; rise in temperature=2.48oC; fuse wire correction=10cal; cooling correction=0.02oC; acid correction=50 cal. Calculate net and GCV of coal in cal/g. Assume latent heat of steam is 580cal/g. |
| A. | HCV=7155.55cal/g; NCV=6894.55cal/g |
| B. | HCV=6894.55cal/g; NCV=7155.55cal/g |
| C. | HCV=7171.2cal/g; NCV=6889.2cal/g |
| D. | HCV=6889.2cal/g; NCV=7171.2cal/g |
| Answer» B. HCV=6894.55cal/g; NCV=7155.55cal/g | |