MCQOPTIONS
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MCQOPTIONS
This section includes 281 Mcqs, each offering curated multiple-choice questions to sharpen your Chemical Engineering knowledge and support exam preparation. Choose a topic below to get started.
| 151. |
_Carbon percentage (by weight) in crude petroleum may be about$? |
| A. | 65 |
| B. | 75 |
| C. | 85 |
| D. | 95 |
| Answer» D. 95 | |
| 152. |
_Lane and Garton classification of petroleum is based on its$? |
| A. | Composition |
| B. | Specific gravity |
| C. | Optical properties |
| D. | Viscosity |
| Answer» C. Optical properties | |
| 153. |
_Pressure maintained in the high pressure primary tower of a three stage crude oil distillation system is about __________ kg/cm² .$? |
| A. | 1.5 |
| B. | 3 |
| C. | 6 |
| D. | 12 |
| Answer» C. 6 | |
| 154. |
_Crude oil produced by Indian oil fields are predominantly __________ in nature.$? |
| A. | Paraffinic |
| B. | Naphthenic |
| C. | Asphaltic |
| D. | Mixed base |
| Answer» D. Mixed base | |
| 155. |
_95% (by volume) of LPG at 760 mm Hg pressure will evaporate at __________ °C.$? |
| A. | 2 |
| B. | -40 |
| C. | 30 |
| D. | 55 |
| Answer» B. -40 | |
| 156. |
_Which of the following fractions of petroleum contains maximum sulphur?$? |
| A. | Diesel |
| B. | Gasoline |
| C. | Naphtha |
| D. | Atmospheric residue |
| Answer» E. | |
| 157. |
_In petroleum refining, the process used for conversion of hydrocarbons to aromatics is$? |
| A. | Catalytic cracking |
| B. | Catalytic reforming |
| C. | Hydrotreating |
| D. | Alkylation |
| Answer» C. Hydrotreating | |
| 158. |
_Doctor's solution used for sweetening of petroleum products is$? |
| A. | Sodium plumbite |
| B. | Sodium sulphite |
| C. | Sodium thiosulphate |
| D. | Lead sulphate |
| Answer» B. Sodium sulphite | |
| 159. |
_Mercaptans is represented as (where R and R' are alkyl groups)$? |
| A. | R-COOH |
| B. | R-S-H |
| C. | R-S-R |
| D. | R-S-R' |
| Answer» C. R-S-R | |
| 160. |
_The pressure (kg/cm² ) and temperature (°C) maintained in electrical desalters for crude oil are respectively$? |
| A. | 10 and 120 |
| B. | 1 and 200 |
| C. | 50 and 250 |
| D. | 10 and 300 |
| Answer» C. 50 and 250 | |
| 161. |
_Hydrocracking employs$? |
| A. | High pressure & temperature |
| B. | Low pressure & temperature |
| C. | High pressure and low temperature |
| D. | High temperature and low pressure |
| Answer» B. Low pressure & temperature | |
| 162. |
_Pressure & temperature maintained in catalytic cracking is about$? |
| A. | 2atm & 500°C |
| B. | 10atm & 500°C |
| C. | 30atm & 200°C |
| D. | 50atm. & 750°C |
| Answer» B. 10atm & 500¬¨‚àûC | |
| 163. |
_Which of the following has the lowest cetane number?$? |
| A. | Aromatics |
| B. | I-paraffins |
| C. | Naphthene |
| D. | Olefins |
| Answer» B. I-paraffins | |
| 164. |
___________ test is done to find out the softening point of bitumen.$? |
| A. | Impact |
| B. | Ball and ring |
| C. | Flame |
| D. | Viscosity |
| Answer» C. Flame | |
| 165. |
_Main boring diameter for petroleum well is 20-30 cms in diameter, while the depth of the oil well may be about __________ kms.$? |
| A. | 0.1 to 0.5 |
| B. | 1.5 to 4.5 |
| C. | 7.5 to 12.5 |
| D. | 15-20 |
| Answer» C. 7.5 to 12.5 | |
| 166. |
_Though increased pressure has a retarding effect on cracking reaction, yet in actual process, a positive pressure of 10-15 kgf/cm² is maintained during cracking mainly to$? |
| A. | Increase the yield of light distillates |
| B. | Suppress coke formation |
| C. | Enhance the octane number of gasoline |
| D. | Reduce gum content in gasoline |
| Answer» C. Enhance the octane number of gasoline | |
| 167. |
_Stabilisation of gasoline (petrol) means$? |
| A. | Removal of dissolved gases from it |
| B. | Increasing its oxidation stability |
| C. | Improving its lead susceptibility |
| D. | Increasing its vapour pressure |
| Answer» B. Increasing its oxidation stability | |
| 168. |
_In case of liquid petrofuels, momentary combustion is observed at its$? |
| 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 | |
| 169. |
_Petroleum deposits are detected by the.$? |
| A. | Oil seepage at the surface of the earth |
| B. | Measuremet of density, elasticity and magnetic & electric properties of the rock in the crust of the earth |
| C. | Age & nature of rocks inside the crust of the earth |
| D. | All of the above |
| Answer» E. | |
| 170. |
_Which of the following does not require preheating during storage in the storage tank as well as during atomisation through burners?$? |
| A. | PCM |
| B. | Tar |
| C. | Light diesel oil |
| D. | Low viscosity furnace oil |
| Answer» D. Low viscosity furnace oil | |
| 171. |
_Sour crude means the __________ bearing crude.$? |
| A. | Asphalt |
| B. | Sulphur compounds |
| C. | Wax |
| D. | Nitrogen compounds |
| Answer» C. Wax | |
| 172. |
_Catalyst used in alkylation process is$? |
| A. | Sulphuric acid |
| B. | Nickel |
| C. | Silica gel |
| D. | Alumina |
| Answer» B. Nickel | |
| 173. |
_Pyrolysis of kerosene or natural gasoline is done to produce mainly the$? |
| A. | Olefins and aromatics |
| B. | Lighter paraffins |
| C. | Stabilised gasoline |
| D. | Diesel |
| Answer» B. Lighter paraffins | |
| 174. |
_Absolute vapor pressure of petrofuels is found by Reid bomb which is heated in water bath to 100°F. In Reid apparatus, the ratio of the volume of air chamber to that of the liquid fuel chamber is$? |
| A. | 1 |
| B. | 2 |
| C. | 3 |
| D. | 4 |
| Answer» E. | |
| 175. |
_Equal volumes of aniline and diesel oil when mixed at room temperature (during summer) was found to be completely mis-cible. It means that the aniline point of the diesel is __________ the room temperature.$? |
| A. | More than |
| B. | Less than |
| C. | Same as |
| D. | Either more or less; depends on the room temperature |
| Answer» D. Either more or less; depends on the room temperature | |
| 176. |
_Which is the most desirable component of a good quality kerosene?$? |
| A. | I-paraffins |
| B. | Aromatics |
| C. | N-paraffins |
| D. | Naphthenes |
| Answer» D. Naphthenes | |
| 177. |
_Bottom product of atmospheric pressure crude oil distillation column is termed as$? |
| A. | Reduced crude |
| B. | Heavy ends |
| C. | Asphalt |
| D. | Residuum |
| Answer» B. Heavy ends | |
| 178. |
_Antioxidants are added in petrol to$? |
| A. | Impart colour to it, for easy identification |
| B. | Minimise the gum formation |
| C. | Prevent icing of the carburettor |
| D. | Prevent the lead build up in engines |
| Answer» C. Prevent icing of the carburettor | |
| 179. |
_The terminology used for the bottom most product from the vacuum crude distillation unit is$? |
| A. | Residual crude |
| B. | Residuum |
| C. | Reduced crude |
| D. | Petrolatum |
| Answer» C. Reduced crude | |
| 180. |
_Maximum use of petroleum coke is in$? |
| A. | Adsorption refining operation |
| B. | Fuel gas manufacture |
| C. | Carbon electrode manufacture |
| D. | Iron ore reduction |
| Answer» D. Iron ore reduction | |
| 181. |
_Specific gravity of a petroleum product gives an indication of its$? |
| A. | Degree of refinement |
| B. | Hydrocarbon content type (aromatic or paraffinic) |
| C. | Ease of atomisation |
| D. | Sulphur content |
| Answer» C. Ease of atomisation | |
| 182. |
_Which of the following is the most suitable feed for platforming process (reforming)?$? |
| A. | Olefinic hydrocarbon |
| B. | Naphtha |
| C. | Fuel oil |
| D. | Atmospheric residue |
| Answer» B. Naphtha | |
| 183. |
_Feedstock for the production of biodiesel is$? |
| A. | Herbal plants |
| B. | Used vegetable oils |
| C. | LSHS |
| D. | Bagasse |
| Answer» C. LSHS | |
| 184. |
_High aniline point of a petrofuel (say diesel) indicates that$? |
| A. | It is highly aromatic in nature |
| B. | It is highly paraffinic in nature |
| C. | It has a very low diesel index |
| D. | Its ignition quality is very poor |
| Answer» C. It has a very low diesel index | |
| 185. |
_Diesel index is defined as$? |
| A. | (°API) x (Aniline Point, °F)/100 |
| B. | (°API) x (Aniline Point, °C)/100 |
| C. | (°API) x (100)/Aniline Point, °F |
| D. | (°API) x (100)/Aniline Point, °C |
| Answer» B. (¬¨‚àûAPI) x (Aniline Point, ¬¨‚àûC)/100 | |
| 186. |
_Crude oil is transported inland from oil field to refineries, mainly by the$? |
| A. | Road tankers |
| B. | Rail tankers |
| C. | Underground pipelines |
| D. | None of these |
| Answer» D. None of these | |
| 187. |
___________ determination is not a very significant and important test for gasoline.$? |
| A. | Gum & sulphur content |
| B. | Viscosity |
| C. | Octane number |
| D. | Reid vapor pressure |
| Answer» C. Octane number | |
| 188. |
_Paraffin base crude oil as compared to asphalt base crude gives$? |
| A. | Higher yield of straight run gasoline |
| B. | Higher octane number gasoline |
| C. | Lower viscosity index lube oil |
| D. | Poorer yield of lube oil |
| Answer» B. Higher octane number gasoline | |
| 189. |
_Methyl tertiary butyl ether (MTBE), a high octane (octane no. = 115) gasoline blending component is produced by the simple additive reaction of isobutylene with$? |
| A. | Methyl alcohol |
| B. | Ethyl alcohol |
| C. | Methane |
| D. | Ethane |
| Answer» B. Ethyl alcohol | |
| 190. |
_Flash point of motor gasoline may be around __________ °C.$? |
| A. | 10 |
| B. | 45 |
| C. | 100 |
| D. | 150 |
| Answer» C. 100 | |
| 191. |
_Flash point of diesel/kerosene (>50°C) is determined by the$? |
| A. | Abel apparatus |
| B. | Pensky-Martens apparatus |
| C. | Saybolt chromometer |
| D. | None of these |
| Answer» B. Pensky-Martens apparatus | |
| 192. |
Naphtha yield in straight run distillation of crude oil may be about __________ percent.$? |
| A. | 2 |
| B. | 6 |
| C. | 12 |
| D. | 18 |
| Answer» C. 12 | |
| 193. |
The general formula of naphthenes is$? |
| A. | CnH2n + 2 |
| B. | CnH2n - 6 (where, n ‚â• 6) |
| C. | CnHn - 4 |
| D. | Same as that for olefins i.e. CnH2n |
| Answer» C. CnHn - 4 | |
| 194. |
Smoke point of kerosene is the$? |
| A. | Time after which smoking starts on burning |
| B. | Temperature at which smoking starts |
| C. | Maximum height of flame (in mm) without causing smoking, when burnt in a standard lamp |
| D. | None of these |
| Answer» C. Maximum height of flame (in mm) without causing smoking, when burnt in a standard lamp | |
| 195. |
Cracking is$? |
| A. | An exothermic reaction |
| B. | An endothermic reaction |
| C. | Favoured at very low temperature |
| D. | None of these |
| Answer» C. Favoured at very low temperature | |
| 196. |
Which of the following has maximum hydrogen/carbon ratio (by weight)?$? |
| A. | Naphtha |
| B. | Gasoline |
| C. | Diesel |
| D. | Fuel oil |
| Answer» C. Diesel | |
| 197. |
Crude topping column operates at __________ pressure.$? |
| A. | Atmospheric |
| B. | 10 atm |
| C. | Vacuum |
| D. | 3 atm |
| Answer» B. 10 atm | |
| 198. |
Water separometer index (modified) (WSIM) of a petrofuel is the measure of its$? |
| A. | Emulsification tendency |
| B. | Water separation characteristics |
| C. | Water content |
| D. | Water absorbing capacity from atmosphere |
| Answer» C. Water content | |
| 199. |
Higher boiling fractions like atmospheric residue is distilled under vacuum at low temperature because at high temperature, there is a tendency of the predominance of$? |
| A. | Thermal cracking |
| B. | Gum formation |
| C. | Coking |
| D. | Discoloration |
| Answer» D. Discoloration | |
| 200. |
Octane number of gasoline is a measure of its$? |
| A. | Resistance to knock |
| B. | Ignition delay |
| C. | Ignition temperature |
| D. | Smoke point |
| Answer» B. Ignition delay | |