MCQOPTIONS
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MCQOPTIONS
This section includes 9 Mcqs, each offering curated multiple-choice questions to sharpen your Engineering Chemistry knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
How can fuel have good flexibility? |
| A. | Should have high calorific value |
| B. | Should have high moisture content |
| C. | Should be easy to handle and control |
| D. | Should have high cost |
| Answer» D. Should have high cost | |
| 2. |
Why does the flame temperatures calculated solely are invariably higher? |
| A. | Since the combustion takes place instantly and completely |
| B. | Since some heat is lost as latent heat of steam produced |
| C. | Since the dissociating gas molecules does not absorb a little heat |
| D. | Since the specific heat of gases decreases with temperature. |
| Answer» C. Since the dissociating gas molecules does not absorb a little heat | |
| 3. |
On what factors does the temperature of flame depends? |
| A. | Calorific value of gas, total gaseous products formed and pressure |
| B. | Calorific value of gas, total gaseous products formed and specific heat |
| C. | Calorific value of gas, total gaseous products formed and area |
| D. | Calorific value of gas, total gaseous products formed and intensity |
| Answer» C. Calorific value of gas, total gaseous products formed and area | |
| 4. |
Flaming fuels burn with lower calorific intensities then the flameless fuels. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 5. |
When does a fuel burn with high calorific intensity? |
| A. | When solid fuel burns in high local fuel-bed temperature |
| B. | When the fuel burns with an appreciable flame |
| C. | When the combustion of fuel is not proper |
| D. | When the fuel is of large size |
| Answer» B. When the fuel burns with an appreciable flame | |
| 6. |
How can we calculate the calorific value of a fuel at constant pressure? |
| A. | QC.V. = QC.P. – (Δn)×R×T |
| B. | QC.V. = QC.P. + (Δn)×R×T |
| C. | QC.P. = QC.V. – (Δn)×R×T |
| D. | QC.V. = QC.P. – (Δn)×R×T×S |
| Answer» D. QC.V. = QC.P. – (Δn)×R×T×S | |
| 7. |
Calculate the net calorific value of the fuel if it’s ultimate analysis comes out to be containing C = 64%, O = 14.56%, H = 10.44%, N = 6.52%, S = 4.48%? |
| A. | 8245.452 cal/gm |
| B. | 7865.550 cal/gm |
| C. | 7693.907 cal/gm |
| D. | 8890.654 cal/gm |
| Answer» D. 8890.654 cal/gm | |
| 8. |
A coal sample contains C=75.5%, H=11.25%, O=11.25, N=1%, S=1%. Caluclate gross calorific value? |
| A. | 9568 cal/gm |
| B. | 10000 cal/gm |
| C. | 9799.010 cal/gm |
| D. | 9518.893 cal/gm |
| Answer» E. | |
| 9. |
Which of the following factor does not affect the gross calorific value? |
| A. | CO2 emissions from the fuel |
| B. | Latent heat produced in the fuel |
| C. | Size of the fuel |
| D. | Moisture content of the fuel |
| Answer» D. Moisture content of the fuel | |