MCQOPTIONS
Saved Bookmarks
MCQOPTIONS
This section includes 46 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. |
What is the catalyst used in Bergius process? |
| A. | nickel oleate |
| B. | phosphoric acid |
| C. | zirconium oxide |
| D. | aluminum oxide |
| Answer» B. phosphoric acid | |
| 2. |
A fuel is a combustible substance containing ______ as major constitute. |
| A. | nitrogen |
| B. | oxygen |
| C. | carbon |
| D. | hydrogen |
| Answer» D. hydrogen | |
| 3. |
Boiling point of LPG____ |
| A. | 546k |
| B. | 373k |
| C. | above room temperature |
| D. | below room temperature |
| Answer» E. | |
| 4. |
A coal has the following composition by weight: C=90%, O=4%, N=1%, S=0.5% and ash=5%.The NCV of the fuel was found to be 8480cal/g. Calculate the percentage of hydrogen and HCV of the fuel. |
| A. | H=4.21%, HCV=8621.80cal/g |
| B. | H=4.521%, HCV=8221.80cal/g |
| C. | H=4.686%, HCV=8727.37cal/g |
| D. | H=4.1%, HCV=8221.37cal/g |
| Answer» D. H=4.1%, HCV=8221.37cal/g | |
| 5. |
Calculate the HCV and NCV of the coal for the following data.Weight of the coal=0.8gWater equivalent of calorimeter=460gWeight of the water=2600gRise in temperature=2.42oCCooling corrections=0.052oCFuse wire corrections=10 caloriesH=6% and assume latent heat of steam=600cal/g. |
| A. | 9131.4cal/g |
| B. | 9113.6cal/g |
| C. | 9800cal/g |
| D. | 9220cal/g |
| Answer» B. 9113.6cal/g | |
| 6. |
The flame colour of the aromatic compounds is ________ |
| A. | yellow |
| B. | orange |
| C. | green |
| D. | pink |
| Answer» B. orange | |
| 7. |
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 | |
| 8. |
Naphthenes having more than 20 C-atoms are called as________ |
| A. | cyclo alkenes |
| B. | cyclo alkanes |
| C. | cyclo paraffins |
| D. | cyclo alkynes |
| Answer» D. cyclo alkynes | |
| 9. |
Olefins are slightly soluble in _____ |
| A. | water |
| B. | alcohol |
| C. | kerosene |
| D. | ethanol |
| Answer» B. alcohol | |
| 10. |
The calorific value of LPG is______ |
| A. | 34800kcal/m3 |
| B. | 84000kcal/m3 |
| C. | 278000kcal/m3 |
| D. | 29000kcal/m3 |
| Answer» D. 29000kcal/m3 | |
| 11. |
A formula giving the gross heating value of coal in terms of the weight fractions of carbon, hydrogen, oxygen and sulphur from the _________ |
| A. | ultimate analysis |
| B. | proximate analysis |
| C. | distillation |
| D. | filtration |
| Answer» B. proximate analysis | |
| 12. |
Paraffins are obtained by______ process from petroleum. |
| A. | fractional distillation |
| B. | sedimentation |
| C. | filtration |
| D. | fermentation |
| Answer» B. sedimentation | |
| 13. |
The scales formed during the removal of harmful impurities can be removed by_____ |
| A. | electrolysis |
| B. | electroplating |
| C. | electrotyping |
| D. | dehydration |
| Answer» E. | |
| 14. |
Heavy oil on refractionation produces____ |
| A. | Asphalt |
| B. | diesel oil |
| C. | grease |
| D. | kerosene oil |
| Answer» D. kerosene oil | |
| 15. |
General formula for Naphthenes |
| A. | CnH2n+2 |
| B. | CnH2n |
| C. | CnH2n-6 |
| D. | CnH2n-2 |
| Answer» C. CnH2n-6 | |
| 16. |
Which of the following fuels has the highest calorific value? |
| A. | lignite |
| B. | wood |
| C. | bituminous |
| D. | anthracite |
| Answer» E. | |
| 17. |
CO=40%, H2=12%, CO2=6%, CH2=2%, N2=50% are the components in the coal. What will be the composition of the dry flue gas, if the 50% excess air was used for burning 100m3 of gas? |
| A. | CO2=14.9%,N2=80%,O2=5.2% |
| B. | CO2=12.2%,N2=70.8%,O2=6.5% |
| C. | CO2=14.9%,N2=79.9%,O2=5.2% |
| D. | CO2=13%,N2=77%,O2=75 |
| Answer» D. CO2=13%,N2=77%,O2=75 | |
| 18. |
Which of the following order of petrol knocking is true? |
| A. | aromatics > branched paraffins > olefins > cyclo paraffins > aromatics |
| B. | straight chain paraffins > olefins > branched paraffins > cyclo paraffins > straight chain paraffins |
| C. | straight chain paraffins > branched paraffins > olefins > cyclo paraffins > aromatics |
| D. | straight chain paraffins > branched paraffins > olefins > aromatics > cyclo paraffins |
| Answer» D. straight chain paraffins > branched paraffins > olefins > aromatics > cyclo paraffins | |
| 19. |
Lignite is also called as __________ |
| A. | black coal |
| B. | brown coal |
| C. | char coal |
| D. | crude oil |
| Answer» C. char coal | |
| 20. |
Paraffins are mostly used as_______ |
| A. | dye |
| B. | lubricant |
| C. | catalyst |
| D. | coolent |
| Answer» C. catalyst | |
| 21. |
Calculate the HCV of the coal from the given data:Weight of the fuel burnt=0.92Initial temperature=120CFinal temperature=19.20CWeight of the water in calorimeter is 1458gWater equivalent of calorimeter =14g |
| A. | 11520k.cal/m3 |
| B. | 11560k.cal/m3 |
| C. | 11000k.cal/m3 |
| D. | 11590k.cal/m3 |
| Answer» B. 11560k.cal/m3 | |
| 22. |
Find the % of C from following data:% of moisture:10g% of volatile matter:9.5g% of ash:11.6g |
| A. | 68.9g |
| B. | 62.1g |
| C. | 63.1g |
| D. | 70.8g |
| Answer» B. 62.1g | |
| 23. |
In determination of % of C and H, the coal is burnt in the stream of _______ |
| A. | pure sulphur |
| B. | pure nitrogen |
| C. | pure alcohol |
| D. | pure oxygen |
| Answer» E. | |
| 24. |
Aromatic compounds are produced from ________ |
| A. | natural gas |
| B. | coal tar |
| C. | oil gas |
| D. | heavy gas |
| Answer» C. oil gas | |
| 25. |
In moving bed catalytic cracking, the catalyst is in the form of ____________ |
| A. | fine powder |
| B. | pallets |
| C. | liquid form |
| D. | gaseous form |
| Answer» B. pallets | |
| 26. |
Aromatic compounds are _____ with water. |
| A. | dissolves |
| B. | immiscible |
| C. | forms lump |
| D. | easily dissolves |
| Answer» C. forms lump | |
| 27. |
Calculate the GCV and NCV of a fuel from the following data. Volume of the fuel burnt at STP is 0.08m2.Weight of the water used for cooling is 24kg.Temperature of inlet and outlet water is 25oC. and 30oC respectively. Weight of water obtained by steam condensation is 0.02kg. |
| A. | 1234.50cal/g |
| B. | 1353.25cal/g |
| C. | 1225.50cl/g |
| D. | 1335.25cal/g |
| Answer» C. 1225.50cl/g | |
| 28. |
Which of the following is a synthetic fuel in gas form? |
| A. | Natural gas |
| B. | Producer gas |
| C. | LPG |
| D. | Petroleum |
| Answer» C. LPG | |
| 29. |
In fixed bed catalytic cracking, the catalyst is reactivated after every __________ |
| A. | 8-10hrs |
| B. | 20-24hrs |
| C. | 5-7hrs |
| D. | 12-15hrs |
| Answer» B. 20-24hrs | |
| 30. |
% of nitrogen can be determined by the process: |
| A. | dulong's formula |
| B. | orsat's apparatus |
| C. | kjeldahl's method |
| D. | fractional distillation |
| Answer» D. fractional distillation | |
| 31. |
Ultimate analysis of coal is also called as: |
| A. | quantitative analysis |
| B. | elementary analysis |
| C. | qualitative analysis |
| D. | secondary analysis |
| Answer» D. secondary analysis | |
| 32. |
The boiling range of un-condensed gas is_____ |
| A. | < 300C |
| B. | < 400C |
| C. | > 500C |
| D. | < 200C |
| Answer» B. < 400C | |
| 33. |
The moisture content in the coal can be given by heating the coal for _____ hours. |
| A. | 2 |
| B. | 1 |
| C. | 4 |
| D. | 6 |
| Answer» C. 4 | |
| 34. |
Liquid paraffin is used as________ |
| A. | Dye |
| B. | Medical purposes |
| C. | Inhibitor |
| D. | Catalyst |
| Answer» C. Inhibitor | |
| 35. |
Naphthenes are also called as _______ |
| A. | cyclo alkanes |
| B. | aromatics |
| C. | cyclo alkenes |
| D. | cyclo alkynes |
| Answer» B. aromatics | |
| 36. |
The dulong's formula is not applicable for_____ |
| A. | solid fuel |
| B. | gaseous fuel |
| C. | liquid fuel |
| D. | any fuel |
| Answer» C. liquid fuel | |
| 37. |
Natural gas contains______ |
| A. | methane=70-90% |
| B. | benzene=40-30% |
| C. | hydrogen=50% |
| D. | methane=80-40% |
| Answer» B. benzene=40-30% | |
| 38. |
Olefins containing 2 to 4 carbon atoms are ______ at ordinary temperature. |
| A. | solid |
| B. | liquid |
| C. | gaseous |
| D. | semisolid |
| Answer» D. semisolid | |
| 39. |
What is the pressure applied during hydrogenation of coal |
| A. | 200-280atm |
| B. | 200-250atm |
| C. | 300-380atm |
| D. | 300-350atm |
| Answer» C. 300-380atm | |
| 40. |
In vapour phase thermal cracking, the temperature achieved is ___________ |
| A. | 200-400oC |
| B. | 600-650oC |
| C. | 500-820oC |
| D. | 700-800oC |
| Answer» C. 500-820oC | |
| 41. |
The major advantage of a good fuel is _______ |
| A. | ease of transportation |
| B. | production of more oxygen |
| C. | production of more nitrogen |
| D. | production of more vapor |
| Answer» B. production of more oxygen | |
| 42. |
CNG is stored at a pressure of____ |
| A. | 281-621kg/cm2 |
| B. | 482-591kg/cm2 |
| C. | 200-248kg/cm2 |
| D. | 800-828kg/cm2 |
| Answer» D. 800-828kg/cm2 | |
| 43. |
During metallurgical operations, n2 causes ___________ |
| A. | hardness to sample |
| B. | softness to sample |
| C. | moisture to sample |
| D. | heat to sample |
| Answer» B. softness to sample | |
| 44. |
The moisturizing the coal before introducing into furnace is called as: |
| A. | moisturizing |
| B. | filtering |
| C. | tempering |
| D. | combustion |
| Answer» D. combustion | |
| 45. |
Calculate the net calorific value of a coal sample having the following composition:C=80%, H=5%, O=4%, N=3%, S=3.5% and ash=5% |
| A. | 7251.8cal/g |
| B. | 7780.5cal/g |
| C. | 7621.5cal/g |
| D. | 7830.75cal/g |
| Answer» E. | |
| 46. |
Modification of the dulong's formula can be done by considering the______ |
| A. | latent heat |
| B. | heat |
| C. | fuel state |
| D. | liquid fuels |
| Answer» B. heat | |