MCQOPTIONS
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MCQOPTIONS
This section includes 288 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. |
Potassic fertiliser is graded based on its __________ content. |
| A. | KCl |
| B. | K2O |
| C. | KNO3 |
| D. | K2SO4 |
| Answer» C. KNO3 | |
| 202. |
Nitrogenous fertiliser is required |
| A. | during the early stage of growth to promote development of stem and leaves. |
| B. | for accelerating fruit formation in later stage of growth. |
| C. | to lessen the effect of excessive potash application. |
| D. | none of these. |
| Answer» B. for accelerating fruit formation in later stage of growth. | |
| 203. |
Superphosphate is manufactured by reacting phosphate rock with |
| A. | acetic acid |
| B. | sulphuric acid |
| C. | aluminium chloride |
| D. | none of these |
| Answer» C. aluminium chloride | |
| 204. |
Steam reforming of naphtha is a source of hydrogen production for nitrogeneous fertiliser industry. What is the usual ratio of steam to carbon maintained in the process of steam reforming of naphtha ? |
| A. | 1.5:1 |
| B. | 3.5:1 |
| C. | 0.41736111111111 |
| D. | 0.62569444444444 |
| Answer» C. 0.41736111111111 | |
| 205. |
Urea (a nitrogeneous fertiliser) is produced from carbon dioxide and |
| A. | nitric acid |
| B. | ammonia |
| C. | ammonium nitrate |
| D. | nitric oxide |
| Answer» C. ammonium nitrate | |
| 206. |
Reaction of orthophosphoric acid with soda ash produces |
| A. | sodium tripolyphosphate (STPP) |
| B. | tricresyl phosphate |
| C. | tributyl phosphate |
| D. | nitrophosphate |
| Answer» B. tricresyl phosphate | |
| 207. |
The fertiliser plant getting hydrogen by electrolysis of water is situated at |
| A. | Namrup |
| B. | Nangal |
| C. | Rourkela |
| D. | Korba |
| Answer» C. Rourkela | |
| 208. |
Conditioners like finely divided peat are added to the fertiliser to |
| A. | counteract burning. |
| B. | avoid caking & hardening. |
| C. | produce bulk. |
| D. | increase its solubility. |
| Answer» C. produce bulk. | |
| 209. |
Calcium ammonium nitrate (CAN) is |
| A. | a mixed fertiliser |
| B. | a straight fertiliser |
| C. | a complex fertiliser |
| D. | not a fertiliser ; it is an explosive |
| Answer» D. not a fertiliser ; it is an explosive | |
| 210. |
Though liquid ammonia itself is a fertiliser (with 82% nitrogen content) yet it is commonly not used as such in a tropical country like India, because it |
| A. | has a pungent smell. |
| B. | vaporises at normal temperature. |
| C. | is toxic and highly corrosive. |
| D. | is in short supply. |
| Answer» C. is toxic and highly corrosive. | |
| 211. |
Sodium tri poly phosphate (STPP) is manufactured by reaction of phosphoric acid with sodium |
| A. | carbonate |
| B. | phosphate |
| C. | bicarbonate |
| D. | silicate |
| Answer» B. phosphate | |
| 212. |
Bio-fertilisers are cheaper, renewable and pollution free. They improve the __________ of the soil. |
| A. | nutrient supply |
| B. | texture |
| C. | water holding capacity |
| D. | all (a), (b) and (c) |
| Answer» E. | |
| 213. |
Vetrocoke solution is |
| A. | a mixture of K2CO3 and As2O3. |
| B. | K2SO4. |
| C. | a mixture of Na2CO3 and As2O3. |
| D. | Na2SO4. |
| Answer» B. K2SO4. | |
| 214. |
Vapor phase reaction of ammonia & nitric acid to produce ammonium nitrate is termed as the __________ process. |
| A. | Haber's |
| B. | Stengel |
| C. | Le-chatlier's |
| D. | Du-pont's |
| Answer» C. Le-chatlier's | |
| 215. |
Color of nitric acid is light yellow due to the presence of |
| A. | NO |
| B. | NO2 |
| C. | N2H5 |
| D. | NH3 |
| Answer» C. N2H5 | |
| 216. |
Which fertiliser is made (using coke oven gas) in by products plant of an integrated steel plant ? |
| A. | Urea |
| B. | CAN |
| C. | Ammonium sulphate |
| D. | Superphosphate |
| Answer» D. Superphosphate | |
| 217. |
Commercial production of hydrogen for the manufacture of nitrogeneous fertilisers is done by |
| A. | steam reforming of naphtha and cracking of natural gas. |
| B. | electrolysis of water. |
| C. | cryogenic separation of hydrogen from coke oven gas. |
| D. | all (a), (b) and (c) |
| Answer» E. | |
| 218. |
Fertiliser plant making ammonium sulphate employing gypsum-ammonia reaction (usual practice is to use ammonia and sulphuric acid) is located at |
| A. | Rourkela (under SAIL) |
| B. | Bokaro (under SAIL) |
| C. | Sindri (under FCI) |
| D. | Baroda (under G.S.F.C.) |
| Answer» D. Baroda (under G.S.F.C.) | |
| 219. |
Liquid ammonia is not used as such a fertiliser in tropical countries like India, because |
| A. | its N2 content is very low. |
| B. | it is very costly. |
| C. | it will evaporate on spraying. |
| D. | it is not available. |
| Answer» D. it is not available. | |
| 220. |
Heating of orthophosphoric acid to about 900°C, produces$ |
| A. | metaphosphoric acid |
| B. | pyrophosphoric acid |
| C. | no change in it |
| D. | none of these |
| Answer» B. pyrophosphoric acid | |
| 221. |
Red phosphorous is changed into white phosphorous by |
| A. | heating in presence of light. |
| B. | melting under pressure. |
| C. | vaporisation followed by condensation. |
| D. | none of these. |
| Answer» D. none of these. | |
| 222. |
Electric process as compared to wet process (for the manufacture of phosphoric acid) |
| A. | can use only high grade phosphate rock. |
| B. | is used less frequently. |
| C. | produces a valuable by-product called gypsum. |
| D. | is weak acid process. |
| Answer» C. produces a valuable by-product called gypsum. | |
| 223. |
Oxidation of ammonia is |
| A. | exothermic |
| B. | endothermic |
| C. | non-catalytic |
| D. | autocatalytic |
| Answer» B. endothermic | |
| 224. |
NPK fertiliser is a __________ fertiliser. |
| A. | complex |
| B. | mixed |
| C. | nitrogenous |
| D. | phosphatic |
| Answer» C. nitrogenous | |
| 225. |
Which of the following fertilisers contains the least percentage of nitrogen? |
| A. | Liquid ammonia |
| B. | Urea |
| C. | Ammonium phosphate |
| D. | Ammonium sulphate |
| Answer» D. Ammonium sulphate | |
| 226. |
5-10-5 fertilisers mean that they contain |
| A. | 5, 10, 5% respectively of N2, P2O5 and K2O. |
| B. | only 5 to 10% active fertiliser constituents. |
| C. | 5 to 10% filler & carrier of soil conditioners. |
| D. | none of these. |
| Answer» B. only 5 to 10% active fertiliser constituents. | |
| 227. |
Phosphoric acid is produced in wet process from phosphate rock and |
| A. | dilute H2SO4 |
| B. | concentrated H2SO4 |
| C. | concentrated NHO3 |
| D. | concentrated HCl |
| Answer» B. concentrated H2SO4 | |
| 228. |
In the manufacture of H3 PO4 (ortho), ; strong H2 SO4 leaching wet process as compared to electric furnace process |
| A. | uses lower grade phosphate rock. |
| B. | requires lower capital investment in the plant. |
| C. | produces lower purity acid. |
| D. | is very costly. |
| Answer» D. is very costly. | |
| 229. |
Nitrolime is chemically known as |
| A. | calcium nitrate |
| B. | ammonium nitrate |
| C. | calcium ammonium nitrate (CAN) |
| D. | none of these |
| Answer» D. none of these | |
| 230. |
C/H ratio (by weight) of naphtha used in nitrogenous fertiliser making is about |
| A. | 2 |
| B. | 6 |
| C. | 13 |
| D. | 20 |
| Answer» C. 13 | |
| 231. |
Monte catini process is a widely used process for the manufacture of |
| A. | urea |
| B. | calcium ammonium nitrate |
| C. | triple superposphate |
| D. | none of these |
| Answer» B. calcium ammonium nitrate | |
| 232. |
Triple superphosphate is chemically represented as |
| A. | CaF2.3Ca3(PO4)2 |
| B. | 3Ca3(PO4)2 |
| C. | Ca(PO3)2 |
| D. | Ca(H2PO4)2 |
| Answer» B. 3Ca3(PO4)2 | |
| 233. |
Urea is represented as |
| A. | NH2.CO.NH2 |
| B. | NH3CO.CH3 |
| C. | NH.CO2.NH |
| D. | NH3.CO2.NH3 |
| Answer» B. NH3CO.CH3 | |
| 234. |
Which is the most suitable fertiliser for paddy ? |
| A. | CAN |
| B. | Ammonium sulphate |
| C. | Ammonium nitrate |
| D. | Superphosphate |
| Answer» C. Ammonium nitrate | |
| 235. |
Two gas based fertiliser plants are located in |
| A. | Maharashtra and Gujarat |
| B. | Maharashtra and Orissa |
| C. | Gujarat and Madhya Pradesh |
| D. | Jharkhand and Chattisgarh |
| Answer» B. Maharashtra and Orissa | |
| 236. |
Catalyst used in the oxidation of ammonia is |
| A. | platinum-beryllium |
| B. | platinum-rhodium |
| C. | cobalt-molybdenum |
| D. | platinum-molybdenum |
| Answer» C. cobalt-molybdenum | |
| 237. |
Fertiliser plants get their N2 requirements |
| A. | by fractionation of liquified air. |
| B. | by dissociating oxides of nitrogen. |
| C. | from coal gas (coke oven gas). |
| D. | from producer gas. |
| Answer» B. by dissociating oxides of nitrogen. | |
| 238. |
Which of the following is the costliest method for commercial production of hydrogen for ammonia synthesis ? |
| A. | H2 separation from coke oven gas |
| B. | Steam reforming of naphtha |
| C. | Cracking of natural gas |
| D. | Electrolysis of water |
| Answer» E. | |
| 239. |
Action of phosphoric acid on rock phosphate produces |
| A. | superphosphate |
| B. | triple superphosphate |
| C. | nitrophosphate |
| D. | diammonium phosphate |
| Answer» C. nitrophosphate | |
| 240. |
Which of the following does not come under the category of 'secondary nutrient' for plant growth? |
| A. | Calcium |
| B. | Magnesium |
| C. | Sulphur |
| D. | Oxygen |
| Answer» E. | |
| 241. |
Use of catalyst is a must in the ammonia manufacture, because the reaction is reversible as well as the heat of dissociation of N2 & H2 is high. The presence of promoter along with the catalyst helps in __________ of the catalyst. |
| A. | stabilisation |
| B. | increasing the effectiveness |
| C. | improving the strength & heat resistance |
| D. | all a, b & c |
| Answer» E. | |
| 242. |
I argest capacity nitrogenous fertiliser plants (2700 tons of NH3 per day) (2 Nos) in India are located at |
| A. | Thal-Vaishet (under RCF in Maharashtra) and Hazira (under IFFCO in Gujarat). |
| B. | Talchar (Orissa) and Ramagundam (A.P.) both under FCI. |
| C. | Korba (M.P.) and Talchar (Orissa) both under FCI. |
| D. | Haldia (W.B) and Namrup (Assam) both under HFC. |
| Answer» B. Talchar (Orissa) and Ramagundam (A.P.) both under FCI. | |
| 243. |
Fauser Monte Catini converter is used for |
| A. | ammonia synthesis (e.g. at FCI Sindri). |
| B. | methanation of CO and CO2. |
| C. | shift conversion (i.e. CO to CO2). |
| D. | none of these. |
| Answer» B. methanation of CO and CO2. | |
| 244. |
Main constituent of phosphate rock is |
| A. | ammonium phosphate |
| B. | flour apatite |
| C. | calcium fluoride |
| D. | calcium phosphate |
| Answer» C. calcium fluoride | |
| 245. |
Which is a catalyst promoter used in catalytic ammonia synthesis reaction ? |
| A. | Al2O3 |
| B. | Cr2O3 |
| C. | K2O |
| D. | MnO |
| Answer» D. MnO | |
| 246. |
Lower temperature and large excess of ammonia in urea melt |
| A. | increases biuret formation |
| B. | decreases biuret formation |
| C. | is undersirable |
| D. | does not effect biuret formation |
| Answer» C. is undersirable | |
| 247. |
Urea is a __________ fertiliser. |
| A. | nitrogenous |
| B. | potassic |
| C. | phosphatic |
| D. | none of these |
| Answer» B. potassic | |
| 248. |
(CH3 C6 H4)3 PO4 is the chemical formula of |
| A. | triple superphosphate |
| B. | tricresyl phosphate |
| C. | flourapatite |
| D. | superphosphate |
| Answer» C. flourapatite | |
| 249. |
Urea is a better fertilizer than ammonium sulphate, because |
| A. | it is cheaper. |
| B. | nitrogen content is higher. |
| C. | it is not poisonous. |
| D. | it is easy to manufacture. |
| Answer» C. it is not poisonous. | |
| 250. |
Gas based fertiliser plants use |
| A. | natural gas as a source of hydrogen. |
| B. | natural gas as heating medium. |
| C. | coal gas as a source of hydrogen. |
| D. | coal gas as heating medium. |
| Answer» B. natural gas as heating medium. | |