MCQOPTIONS
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MCQOPTIONS
This section includes 246 Mcqs, each offering curated multiple-choice questions to sharpen your Chemical Engineering knowledge and support exam preparation. Choose a topic below to get started.
| 101. |
Octane number of n-heptane is assumed to be_________________? |
| A. | 100 |
| B. | 0 |
| C. | 70 |
| D. | ∞ |
| Answer» C. 70 | |
| 102. |
Octane number of gasoline produced by two stage fluidised catalytic cracking process is___________________? |
| A. | 80 |
| B. | 87 |
| C. | 92 |
| D. | 97 |
| Answer» E. | |
| 103. |
Octane number (unleaded) of reformed gasoline may be upto ________________? |
| A. | 60 |
| B. | 70 |
| C. | 80 |
| D. | 90 |
| Answer» E. | |
| 104. |
Octane number of gasoline is a measure of its__________________? |
| A. | Resistance to knock |
| B. | Ignition delay |
| C. | Ignition temperature |
| D. | Smoke point |
| Answer» B. Ignition delay | |
| 105. |
Natural gasoline is produced___________________? |
| A. | From oil wells |
| B. | In oil refineries |
| C. | By natural gas stripping |
| D. | None of these |
| Answer» D. None of these | |
| 106. |
Natural gas recovered along with crude oil from oil wells is called wet natural gas which has a higher ______________ compared to the dry natural gas? |
| A. | Unsaturated hydrocarbon content |
| B. | Calorific value |
| C. | Quantity of propane |
| D. | Quantity of butane |
| Answer» C. Quantity of propane | |
| 107. |
Naphthenic acid is represented by ___________________? |
| A. | CnH2n+2O2 |
| B. | CnH2n-2O2 |
| C. | CnH2n+2O2 (n ≥ 6) |
| D. | CnH2n+6O2 (n ≤ 6) |
| Answer» C. CnH2n+2O2 (n ≥ 6) | |
| 108. |
Naphthenic acid is a/an ______________ compound? |
| A. | Sulphur |
| B. | Nitrogen |
| C. | Oxygen |
| D. | None of these |
| Answer» D. None of these | |
| 109. |
Naphtha yield in straight run distillation of crude oil may be about _______________ percent? |
| A. | 2 |
| B. | 6 |
| C. | 12 |
| D. | 18 |
| Answer» C. 12 | |
| 110. |
Name the hydrocarbon having the poorest oxidation stability ? |
| A. | Naphthene |
| B. | Olefin |
| C. | Paraffin |
| D. | Aromatics |
| Answer» E. | |
| 111. |
Name the endothermic reaction out of the following ? |
| A. | Catalytic cracking |
| B. | Hydrocracking |
| C. | Dehydrogeneration of Naphthene to produce aromatic |
| D. | Catalytic polymerisation |
| Answer» D. Catalytic polymerisation | |
| 112. |
Most widely used solvent for dewaxing is__________________? |
| A. | Methyl-ethyl-ketone (MEK) |
| B. | Naphtha |
| C. | Petroleum ether |
| D. | Sodium plumbite |
| Answer» B. Naphtha | |
| 113. |
Most commonly used crude heater before the fractionation tower in a refinery is the ______________ heater? |
| A. | Electric immersion |
| B. | Pipestill |
| C. | Steam coil |
| D. | None of these |
| Answer» C. Steam coil | |
| 114. |
Molecular weight of petrol may be about ____________________? |
| A. | 40-60 |
| B. | 100-130 |
| C. | 250-300 |
| D. | 350-400 |
| Answer» C. 250-300 | |
| 115. |
Molecular weight of crude petroleum may be around________________? |
| A. | 50 |
| B. | 250 |
| C. | 1500 |
| D. | 5000 |
| Answer» D. 5000 | |
| 116. |
Methyl tertiary butyl ether (MTBE), a high octane (octane no. = 115) gasoline blending component is produced by the simple additive reaction of isobutylene with __________________? |
| A. | Methyl alcohol |
| B. | Ethyl alcohol |
| C. | Methane |
| D. | Ethane |
| Answer» B. Ethyl alcohol | |
| 117. |
Mercaptans is represented as (where R and R’ are alkyl groups) _____________________? |
| A. | R-COOH |
| B. | R-S-H |
| C. | R-S-R |
| D. | R-S-R’ |
| Answer» C. R-S-R | |
| 118. |
Mercaptans are________________? |
| A. | Low boiling sulphur compounds |
| B. | Added in LPG cylinders to detect gas leakage by its smell |
| C. | Undesirable in petrol, as they reduce its octane number |
| D. | All A., B. and C. |
| Answer» E. | |
| 119. |
Mercaptans are added to liquefied petroleum gas (LPG) to _____________________ ? |
| A. | Reduce its cost |
| B. | Narrow down its explosion limit |
| C. | Assist in checking its leakage from cylinder |
| D. | Increase its calorific value |
| Answer» D. Increase its calorific value | |
| 120. |
Maximum viscosity of tar/PCM/fuel oil for easy and efficient atomisation in conventional burner is _______________ centistokes (or 100 Redwood I seconds) ? |
| A. | 5 |
| B. | 25 |
| C. | 50 |
| D. | 100 |
| Answer» C. 50 | |
| 121. |
Maximum use of petroleum coke is in__________________? |
| A. | Adsorption refining operation |
| B. | Fuel gas manufacture |
| C. | Carbon electrode manufacture |
| D. | Iron ore reduction |
| Answer» D. Iron ore reduction | |
| 122. |
Maximum sulphur percentage in low sulphur heavy stock (LSHS) furnace oil is about_________________? |
| A. | 0.1 |
| B. | 1 |
| C. | 2.5 |
| D. | 3.5 |
| Answer» C. 2.5 | |
| 123. |
Main constituent of natural gas is___________________? |
| A. | CH4 |
| B. | C2H2 |
| C. | C2H4 |
| D. | C2H6 |
| Answer» B. C2H2 | |
| 124. |
Main boring diameter for petroleum well is 20-30 cms in diameter, while the depth of the oil well may be about _____________ kms? |
| A. | 0.1 to 0.5 |
| B. | 1.5 to 4.5 |
| C. | 7.5 to 12.5 |
| D. | 15-20 |
| Answer» C. 7.5 to 12.5 | |
| 125. |
LSHS is a type of furnace oil, which_____________________? |
| A. | Is more viscous than high viscosity furnace oil (HVFO) |
| B. | Stands for low sulphur heavy stock |
| C. | Is an ideal fuel for metallurgical furnaces due to its lower sulphur content (< 1%) |
| D. | All A., B. and C. |
| Answer» E. | |
| 126. |
LPG when brought to atmospheric pressure & temperature will be a________________? |
| A. | Liquid lighter than water |
| B. | Liquid heavier than water |
| C. | Gas lighter than air |
| D. | Gas heavier than air |
| Answer» E. | |
| 127. |
LPG stands for ____________________? |
| A. | Liquid petroleum gas |
| B. | Liquefied petrol gas |
| C. | Liquid petrol gas |
| D. | Liquefied petroleum gas |
| Answer» E. | |
| 128. |
Liquefied petroleum Gas (LPG) used for the household cooking comprises mainly of _______________? |
| A. | Propane & butane |
| B. | Butane & ethane |
| C. | Methane & ethane |
| D. | Methane & carbon monoxide |
| Answer» B. Butane & ethane | |
| 129. |
Liquefied Petroleum Gas (LPG) is mainly a mixture of _____________________? |
| A. | Propane & butane |
| B. | Methane & ethane |
| C. | High boiling olefins |
| D. | High boiling naphthenes |
| Answer» B. Methane & ethane | |
| 130. |
Liquefied Petroleum Gas (LPG) in domestic use cylinders is in the liquid form. The density of LPG in liquid form is about ________________ of that of water (i.e. 1 gm/c.c)? |
| A. | One fourth |
| B. | One third |
| C. | Half |
| D. | One eighth |
| Answer» D. One eighth | |
| 131. |
Lane and Garton classification of petroleum is based on its ____________________? |
| A. | Composition |
| B. | Specific gravity |
| C. | Optical properties |
| D. | Viscosity |
| Answer» C. Optical properties | |
| 132. |
Isomerisation converts the ___________________ tot-paraffins? |
| A. | Paraffins |
| B. | Olefins |
| C. | Naphthenes |
| D. | None of these |
| Answer» B. Olefins | |
| 133. |
Iso-octane is used as a reference substance in the definition of octane number and it is assigned an octane number value of 100. Iso-octane is chemically known as ___________________? |
| A. | α-methyl naphthalene |
| B. | 2-2-4 tri methyl pentane |
| C. | 1, 3 butadiene |
| D. | Tetra methyl ethylene |
| Answer» C. 1, 3 butadiene | |
| 134. |
____________ is not an important refinery process for upgrading the quality of lubricating oil ? |
| A. | Deoiling |
| B. | Solvent refining |
| C. | Clay treatment |
| D. | Hydro-treatment |
| Answer» B. Solvent refining | |
| 135. |
Increase in the specific gravity of petroleum products indicates________________? |
| A. | Decrease in paraffin content |
| B. | Increase in thermal energy per unit weight |
| C. | Increase in aromatic content |
| D. | Higher H/C ratio |
| Answer» B. Increase in thermal energy per unit weight | |
| 136. |
In the atmospheric pressure crude distillation, the content of _____________ from lighter fraction to heavier ones? |
| A. | Sulphur increases |
| B. | Sulphur decreases |
| C. | Nitrogen decreases |
| D. | None of these |
| Answer» B. Sulphur decreases | |
| 137. |
In sweetening process, solutizer agent used with caustic alkali is_______________? |
| A. | Potassium isobutyrate |
| B. | Sodium plumbite |
| C. | Methanol |
| D. | Phenol |
| Answer» B. Sodium plumbite | |
| 138. |
In solutizer sweetening process, solutizer solution used is_______________? |
| A. | Methanol in Unisol process |
| B. | Naphthenic acid in Mercapsol process |
| C. | Both A. and B. |
| D. | Neither A. nor B. |
| Answer» D. Neither A. nor B. | |
| 139. |
In petroleum refining, the process used for conversion of hydrocarbons to aromatics is________________? |
| A. | Catalytic cracking |
| B. | Catalytic reforming |
| C. | Hydrotreating |
| D. | Alkylation |
| Answer» C. Hydrotreating | |
| 140. |
In Hydrofining catalytic desulphurisation process for sweetening of petroleum products, use of hydrogen_________________? |
| A. | Enhances the desulphurisation process |
| B. | Minimises coke formation |
| C. | Both A. and B. |
| D. | Neither A. nor B. |
| Answer» D. Neither A. nor B. | |
| 141. |
In catalytic cracking, the___________________? |
| A. | Gasoline obtained has a very low octane number |
| B. | Pressure & temperature is very high |
| C. | Gasoline obtained has very high aromatic content |
| D. | Gasoline obtained has very high amount of gum forming compounds |
| Answer» D. Gasoline obtained has very high amount of gum forming compounds | |
| 142. |
In catalytic alkylation, higher iso-butane to olefin ratio gives_________________? |
| A. | Low final boiling point product |
| B. | Higher yield |
| C. | Both A. and B. |
| D. | Neither A. nor B. |
| Answer» B. Higher yield | |
| 143. |
In catalytic cracking process, olefins crack ______________ times faster than in thermal cracking process? |
| A. | 100 |
| B. | 200-300 |
| C. | 1000-10000 |
| D. | 10 |
| Answer» D. 10 | |
| 144. |
In case of liquid petrofuels, momentary combustion is observed at its ________________________? |
| A. | Flash point |
| B. | Preheating temperature corresponding to viscosity of 25 centistokes |
| C. | Flame temperature |
| D. | Fire point |
| Answer» B. Preheating temperature corresponding to viscosity of 25 centistokes | |
| 145. |
Illuminating characteristics of kerosene is expressed by its_____________? |
| A. | Smoke point |
| B. | Aniline point |
| C. | Luminosity number |
| D. | Aromatic content |
| Answer» D. Aromatic content | |
| 146. |
Hydrogen percentage (by weight) in crude petroleum may be about __________________? |
| A. | 5 |
| B. | 15 |
| C. | 25 |
| D. | 35 |
| Answer» C. 25 | |
| 147. |
Hydrogen content in petroleum products varies from 12 to 15% (by weight). As a result the difference between gross and net heating value of petroleum fuels varies in the range of ______________ kcal/kg? |
| A. | 600-750 |
| B. | 250-350 |
| C. | 1000-1500 |
| D. | 2000-2500 |
| Answer» B. 250-350 | |
| 148. |
Hydrofining is the most recent and effective method for the____________________ ? |
| A. | Removal of sulphur |
| B. | Improvement of smoke point |
| C. | Reduction of breathing loss |
| D. | Improvement of viscosity index |
| Answer» B. Improvement of smoke point | |
| 149. |
Hydrocracking employs ___________________? |
| A. | High pressure & temperature |
| B. | Low pressure & temperature |
| C. | High pressure and low temperature |
| D. | High temperature and low pressure |
| Answer» B. Low pressure & temperature | |
| 150. |
Highest quality bitumen is produced from the __________________ crude oil? |
| A. | Paraffinic |
| B. | Naphthenic |
| C. | Intermediate |
| D. | Mixed |
| Answer» C. Intermediate | |