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.
| 201. |
Clay treatment is used to remove ___________________ ? |
| A. | Salt from the crude oil |
| B. | Colour & dissolved gases from cracked gasoline |
| C. | Wax from lube oil |
| D. | None of these |
| Answer» D. None of these | |
| 202. |
Choose the correct statement regarding thermal cracking ? |
| A. | Moderate changes in operating temperature does not change the depth of cracking |
| B. | Increased residence time results in the decreased severity of cracking |
| C. | At low pressure, the yield of lighter hydrocarbons are more |
| D. | Greater depth of cracking gives lower octane number gasoline |
| Answer» E. | |
| 203. |
_____________ chloride present in crude petroleum as impurity is the most prolific producer of HCl during distillation? |
| A. | Magnesium |
| B. | Potassium |
| C. | Calcium |
| D. | Sodium |
| Answer» B. Potassium | |
| 204. |
Char value of Kerosene is the amount of charred oil deposition on the wick obtained after burning it in a standard wick lamp at a standard rate for 24 hours. Char value of a good quality kerosene should be less than ________________ mg/kg of kerosene? |
| A. | 1 |
| B. | 20 |
| C. | 100 |
| D. | 500 |
| Answer» C. 100 | |
| 205. |
Cetane number of high speed diesel must be ≥_________________? |
| A. | 30 |
| B. | 45 |
| C. | 75 |
| D. | 95 |
| Answer» C. 75 | |
| 206. |
Cetane number of diesel used in trucks may be about __________________? |
| A. | 50 |
| B. | 14 |
| C. | 35 |
| D. | 85 |
| Answer» B. 14 | |
| 207. |
Cetane number of alpha methyl naphthalene is assumed to be_________________? |
| A. | 0 |
| B. | 100 |
| C. | 50 |
| D. | ∞ |
| Answer» B. 100 | |
| 208. |
Cetane number of a diesel fuel is the measure of its____________________? |
| A. | Ignition delay |
| B. | Smoke point |
| C. | Viscosity |
| D. | Oxidation stability |
| Answer» B. Smoke point | |
| 209. |
Catalytic desulphurisation process used for sweetening of straight run gasoline and kerosene uses _______________ as catalyst? |
| A. | Bauxite |
| B. | Fuller’s earth |
| C. | Activated clay |
| D. | All A., B. & C. |
| Answer» E. | |
| 210. |
Catalytic cracking compared to thermal cracking of residue of vacuum distillation of crude oil__________________? |
| A. | Gives higher yield of petrol |
| B. | Lower octane number of petrol |
| C. | Higher sulphur content in the product |
| D. | Higher gum forming material in petrol |
| Answer» B. Lower octane number of petrol | |
| 211. |
Catalyst used in the isomerisation is_______________________? |
| A. | Aluminium chloride |
| B. | Alumina |
| C. | Nickel |
| D. | Phosphoric acid |
| Answer» B. Alumina | |
| 212. |
Catalyst used in the catalytic polymerisation is__________________? |
| A. | Phosphoric acid on kieselguhr |
| B. | Aluminium chloride |
| C. | Nickel |
| D. | Vanadium pentoxide |
| Answer» B. Aluminium chloride | |
| 213. |
Catalyst used in the catalytic cracking is_____________________? |
| A. | Silica-alumina |
| B. | Silica gel |
| C. | Vanadium pentoxide |
| D. | Nickel |
| Answer» B. Silica gel | |
| 214. |
Catalyst used in isomerisation process is __________________ ? |
| A. | H2SO4 |
| B. | H3PO4 |
| C. | HF |
| D. | AlCl3 |
| Answer» E. | |
| 215. |
Catalyst used in catalytic reforming is__________________? |
| A. | Platinum on alumina |
| B. | Nickel |
| C. | Iron |
| D. | Aluminium chloride |
| Answer» B. Nickel | |
| 216. |
Catalyst used in catalytic polymerisation which produces polymer gasoline is_________________? |
| A. | H2SO4 |
| B. | H3PO4 |
| C. | Both A. and B. |
| D. | AlCl3 |
| Answer» D. AlCl3 | |
| 217. |
Catalyst used in alkylation process is__________________? |
| A. | Sulphuric acid |
| B. | Nickel |
| C. | Silica gel |
| D. | Alumina |
| Answer» B. Nickel | |
| 218. |
Casing head gasoline is the liquid __________________? |
| A. | Butane |
| B. | Propane |
| C. | Natural gas |
| D. | Gasoline separated from wet natural gas by compression |
| Answer» B. Propane | |
| 219. |
Carbon/hydrogen ratio (by weight) is maximum (out of following) for_________________? |
| A. | Gasoline |
| B. | Kerosene |
| C. | Light gas oil |
| D. | Heavy fuel oil |
| Answer» B. Kerosene | |
| 220. |
Carbon percentage (by weight) in crude petroleum may be about_________________? |
| A. | 65 |
| B. | 75 |
| C. | 85 |
| D. | 95 |
| Answer» D. 95 | |
| 221. |
Butadiene is a/an_________________? |
| A. | Di-olefin |
| B. | Naphthene |
| C. | Aromatic |
| D. | Olefin |
| Answer» B. Naphthene | |
| 222. |
“Breathing loss” on storage of gasoline occurs due to the _____________________? |
| A. | Presence of unsaturated air |
| B. | Fluctuation of ambient temperature during day and night |
| C. | Both A. and B. |
| D. | Neither A. nor B. |
| Answer» C. Both A. and B. | |
| 223. |
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 | |
| 224. |
Both asphalt and wax are produced by ______________ base crude oils? |
| A. | Naphthenic |
| B. | Asphalt |
| C. | Paraffin |
| D. | Mixed |
| Answer» E. | |
| 225. |
Boiling range of motor gasoline is an indication of the ___________________? |
| A. | Case of starting |
| B. | Rate of acceleration |
| C. | Vapour locking tendency |
| D. | All A., B. and C. |
| Answer» C. Vapour locking tendency | |
| 226. |
_____________ base crude oil is also called asphaltic crude? |
| A. | Paraffinic |
| B. | Naphthenic |
| C. | Mixed |
| D. | Aromatic |
| Answer» C. Mixed | |
| 227. |
Asphalts are _________________? |
| A. | Low molecular weight & low boiling point compounds present in petroleum |
| B. | Desirable in catalytic cracking feedstock, because they produce coke |
| C. | Readily oxidisable and form carbonaceous sludge |
| D. | All A., B. & C. |
| Answer» D. All A., B. & C. | |
| 228. |
Aromatics have the highest ________________ of all the hydrocarbons of same carbon atoms? |
| A. | Smoke point |
| B. | Octane number |
| C. | Cetane number |
| D. | Viscosity |
| Answer» C. Cetane number | |
| 229. |
Aromatics are desired constituents of____________________? |
| A. | Lubricating oil |
| B. | Diesel |
| C. | Kerosene |
| D. | Petrol |
| Answer» E. | |
| 230. |
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 | |
| 231. |
Aniline point of the diesel is a measure of its ______________ content? |
| A. | Aromatic |
| B. | Paraffin |
| C. | Olefin |
| D. | Naphthene |
| Answer» C. Olefin | |
| 232. |
Aniline point of high speed diesel may be about ____________ °C ? |
| A. | 35 |
| B. | 70 |
| C. | 105 |
| D. | 150 |
| Answer» C. 105 | |
| 233. |
Aniline point test of an oil qualitatively indicates the ______________ content of an oil? |
| A. | Paraffin |
| B. | Olefin |
| C. | Aromatic |
| D. | Naphthene |
| Answer» D. Naphthene | |
| 234. |
Aniline point is the _________________? |
| A. | Characteristic property of diesel & lubricating oils |
| B. | Measure of aromatic content of oil |
| C. | Both A. and B. |
| D. | Neither A. nor B. |
| Answer» D. Neither A. nor B. | |
| 235. |
Aniline point is the temperature at which___________________? |
| A. | Equal weight of diesel & the aniline are completely miscible |
| B. | Equal weight of aniline & the test sample are completely miscible |
| C. | Equal volume of aniline & the test sample are completely miscible |
| D. | Aniline vaporises |
| Answer» D. Aniline vaporises | |
| 236. |
Aniline point is a property of the__________________? |
| A. | Diesel |
| B. | LPG |
| C. | Naphtha |
| D. | Gasoline |
| Answer» D. Gasoline | |
| 237. |
An upper limit of oil content is limited to about ______________ percent for achieving efficient and satisfactory level of wax sweating? |
| A. | 5 |
| B. | 15 |
| C. | 40 |
| D. | 60 |
| Answer» D. 60 | |
| 238. |
Alkylation_____________________? |
| A. | Causes olefins to combine with each other |
| B. | Causes olefins to combine with iso-paraffins |
| C. | Converts iso-paraffin into olefin |
| D. | Converts olefin into paraffin |
| Answer» C. Converts iso-paraffin into olefin | |
| 239. |
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. | 4 |
| B. | 3 |
| C. | 2 |
| D. | 1 |
| Answer» B. 3 | |
| 240. |
A typical yield of kerosene in straight run distillation of crude oil may be about __________________ percent? |
| A. | 4 |
| B. | 10 |
| C. | 18 |
| D. | 26 |
| Answer» C. 18 | |
| 241. |
A typical yield of diesel in straight run distillation of crude oil may be about ________________ percent? |
| A. | 8 |
| B. | 18 |
| C. | 28 |
| D. | 35 |
| Answer» B. 18 | |
| 242. |
A petroleum well is called ‘dry’, if it contains ____________________? |
| A. | Very little oil |
| B. | No natural gas |
| C. | Only natural gas |
| D. | All A., B. and C. |
| Answer» D. All A., B. and C. | |
| 243. |
A multigrade lubricating oil means an oil having high __________________? |
| A. | Viscosity index |
| B. | Viscosity |
| C. | Aniline point |
| D. | Flash point |
| Answer» B. Viscosity | |
| 244. |
A good lubricant should have high _____________________ ? |
| A. | Viscosity index |
| B. | Volatility |
| C. | Pour point |
| D. | None of these |
| Answer» B. Volatility | |
| 245. |
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 | |
| 246. |
1 centistoke is equal to ______________ Redwood I seconds? |
| A. | 1 |
| B. | 4.08 |
| C. | 0.408 |
| D. | 40.8 |
| Answer» C. 0.408 | |