MCQOPTIONS
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MCQOPTIONS
This section includes 2171 Mcqs, each offering curated multiple-choice questions to sharpen your Current Affairs knowledge and support exam preparation. Choose a topic below to get started.
| 1951. |
Urea is a __________ fertiliser. |
| A. | nitrogenous |
| B. | potassic |
| C. | phosphatic |
| D. | none of these |
| Answer» B. potassic | |
| 1952. |
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. | |
| 1953. |
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. | |
| 1954. |
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 | |
| 1955. |
Plant tranquillisers |
| A. | hold back stem growth and halt plants at a desired height. |
| B. | cause early maturation of plants. |
| C. | accelerate ripening of food and grain. |
| D. | produce seedless fruit. |
| Answer» B. cause early maturation of plants. | |
| 1956. |
Catalyst used in the oxidation of ammonia is |
| A. | platinum-beryllium |
| B. | platinum-rhodium |
| C. | cobalt-molybdenum |
| D. | platinum-molybdenum |
| Answer» C. cobalt-molybdenum | |
| 1957. |
With increases in pressure, the conversion of ammonium carbamate into urea |
| A. | increases |
| B. | decreases |
| C. | remains unaltered |
| D. | can either increase or decrease depends on biuret content |
| Answer» B. decreases | |
| 1958. |
Hydrogen content of coke oven gas is __________ percent. |
| A. | 4 |
| B. | 22 |
| C. | 58 |
| D. | 84 |
| Answer» D. 84 | |
| 1959. |
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 | |
| 1960. |
In natural gas, the C/H ratio (by weight) varies in the range of |
| A. | 3-4 |
| B. | 8-10 |
| C. | 15-17 |
| D. | 20-25 |
| Answer» B. 8-10 | |
| 1961. |
Which of the following fertilisers is used as a cattle feed? |
| A. | Urea |
| B. | Calcium ammonium nitrate |
| C. | Superphosphate |
| D. | Ammonium sulphate |
| Answer» B. Calcium ammonium nitrate | |
| 1962. |
NPK means a __________ fertiliser. |
| A. | mixed |
| B. | potassic |
| C. | liquid |
| D. | solid |
| Answer» B. potassic | |
| 1963. |
Ammonium sulphate fertiliser is |
| A. | the highest concentration nitrogenous fertiliser. |
| B. | the best fertiliser for paddy. |
| C. | a basic fertiliser. |
| D. | a neutral fertiliser. |
| Answer» C. a basic fertiliser. | |
| 1964. |
Rock phosphate constitutes mainly of |
| A. | fluorapatite |
| B. | di-calcium phosphate |
| C. | mono-calcium phosphate |
| D. | di-ammonium phosphate |
| Answer» B. di-calcium phosphate | |
| 1965. |
Ammonia synthesis reaction is |
| A. | exothermic |
| B. | endothermic |
| C. | autocatalytic |
| D. | none of these |
| Answer» B. endothermic | |
| 1966. |
Effectiveness of a fertiliser is independent of the |
| A. | nature of soil |
| B. | type of crop |
| C. | pH of soil |
| D. | none of these |
| Answer» E. | |
| 1967. |
Potassic fertiliser is graded based on its __________ content. |
| A. | KCl |
| B. | K₂O |
| C. | KNO₃ |
| D. | K₂SO₄ |
| Answer» C. KNO₃ | |
| 1968. |
Fertiliser produced during soda ash manufacture by dual process is ammonium |
| A. | chloride |
| B. | sulphate |
| C. | nitrate |
| D. | none of these |
| Answer» B. sulphate | |
| 1969. |
Nitrogen content in ammonium sulphate (a fertiliser) is around __________ percent. |
| A. | 5 |
| B. | 20 |
| C. | 50 |
| D. | 65 |
| Answer» C. 50 | |
| 1970. |
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. | |
| 1971. |
Which of the following fertilisers is required for the development of fibrous materials of the plants and of the sugar of vegetable & fruits ? |
| A. | Nitrogenous fertilisers |
| B. | Phosphatic fertilisers |
| C. | Potassic fertiliser |
| D. | None of these |
| Answer» D. None of these | |
| 1972. |
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 | |
| 1973. |
A mixture of phosphate rock __________ is heated in an electric furnace to produce phosphorous. |
| A. | salt & coke |
| B. | sand & coke |
| C. | and coke |
| D. | and sand |
| Answer» C. and coke | |
| 1974. |
Nitrogen content of a nitrogenous fertiliser is 35%. It could be |
| A. | urea |
| B. | ammonium nitrate |
| C. | calcium ammonium nitrate (CAN) |
| D. | ammonium sulphate |
| Answer» C. calcium ammonium nitrate (CAN) | |
| 1975. |
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 | |
| 1976. |
Flushing liquor used for cooling coke oven gas constitutes of |
| A. | ammoniacal liquor |
| B. | K₂CO₃ solution |
| C. | dilute H₂SO₄ |
| D. | dilute HCl |
| Answer» B. K₂CO₃ solution | |
| 1977. |
Pick out the wrong statement. |
| A. | All the nitrogenous fertilisers are not soluble in water. |
| B. | A straight fertiliser contains only one nutrient. |
| C. | Calcium cynamide is used as weed killer in onion fields. |
| D. | The phosphorous nutrient makes the plant stem stronger and increases its branches. |
| Answer» B. A straight fertiliser contains only one nutrient. | |
| 1978. |
P₂O₅ content in triple superphosphate is about __________ percent. |
| A. | 42-50 |
| B. | 15-20 |
| C. | 85-90 |
| D. | 70-75 |
| Answer» B. 15-20 | |
| 1979. |
Chemical formula of biuret is |
| A. | NH₂.CO.NH₂ |
| B. | NH₃.COO.NH₃ |
| C. | NH₂CONHCONH₂ |
| D. | NH₄COONH₂ |
| Answer» D. NH₄COONH₂ | |
| 1980. |
In the manufacture of H₃PO₄ (ortho), ; strong H₂SO₄ 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. | |
| 1981. |
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 | |
| 1982. |
Heating of coke, sand & phosphate rock in an electric furnace is done for the manufacture of |
| A. | phosphoric acid. |
| B. | superphosphate. |
| C. | phosphorous. |
| D. | triple superphosphate. |
| Answer» D. triple superphosphate. | |
| 1983. |
Multistage operation (as in the case of catalytic oxidation of SO₂) is not carried out for NH₃ synthesis, because of |
| A. | comparatively higher pressure drop. |
| B. | high cost of the high pressure vessel used for the reactor. |
| C. | higher pumping cost. |
| D. | chances of entrainment and disturbance of catalyst bed. |
| Answer» C. higher pumping cost. | |
| 1984. |
Catalyst used in desulphurisation of naphtha is |
| A. | Co-Mo |
| B. | Pt-Rh |
| C. | silica gel |
| D. | nickel |
| Answer» B. Pt-Rh | |
| 1985. |
Neutralisation of nitric acid with ammonia to produce ammonium nitrate is a/an __________ reaction. |
| A. | catalytic |
| B. | endothermic |
| C. | exothermic |
| D. | autocatalytic |
| Answer» D. autocatalytic | |
| 1986. |
In which decade was the American Institute of Electrical Engineers (AIEE) founded? |
| A. | 1850s |
| B. | 1880s |
| C. | 1930s |
| D. | 1950s |
| Answer» C. 1930s | |
| 1987. |
What is part of a database that holds only one type of information? |
| A. | Report |
| B. | Field |
| C. | Record |
| D. | File |
| Answer» C. Record | |
| 1988. |
'OS' computer abbreviation usually means ? |
| A. | Order of Significance |
| B. | Open Software |
| C. | Operating System |
| D. | Optical Sensor |
| Answer» D. Optical Sensor | |
| 1989. |
In which decade with the first transatlantic radio broadcast occur? |
| A. | 1850s |
| B. | 1860s |
| C. | 1870s |
| D. | 1900s |
| Answer» E. | |
| 1990. |
'.MOV' extension refers usually to what kind of file? |
| A. | Image file |
| B. | Animation/movie file |
| C. | Audio file |
| D. | MS Office document |
| Answer» C. Audio file | |
| 1991. |
Thermal efficiency of a limestone calcination rotary kiln may be around __________ percent. |
| A. | 20 |
| B. | 40 |
| C. | 65 |
| D. | 80 |
| Answer» C. 65 | |
| 1992. |
The purpose of controlling the furnace atmosphere is to prevent surface attack by |
| A. | oxidation/scaling |
| B. | decarburising |
| C. | sulphur penetration |
| D. | either of the above |
| Answer» E. | |
| 1993. |
In producer gas making furnace, steam is added along with air to mainly control the |
| A. | fusion of coal ash & clinker formation. |
| B. | C. V. of producer gas. |
| C. | temperature of producer gas. |
| D. | tar content in producer gas. |
| Answer» B. C. V. of producer gas. | |
| 1994. |
Which of the following is the most suitable for preheating combustion air above 650°C ? |
| A. | Regenerator |
| B. | Metallic recuperator |
| C. | Ceramic recuperator |
| D. | None of these |
| Answer» D. None of these | |
| 1995. |
Soaking pits are meant for heating steel |
| A. | ingots |
| B. | coils |
| C. | sheets |
| D. | slabs |
| Answer» B. coils | |
| 1996. |
Vicat's apparatus is used for |
| A. | fineness test |
| B. | consistency test |
| C. | setting time test |
| D. | soundness test |
| Answer» C. setting time test | |
| 1997. |
M 150 grade of concrete approximates |
| A. | 1 : 3 : 6 mix |
| B. | 1 : 1 :2 mix |
| C. | 1 : 2 : 4 mix |
| D. | 1 : 1.5 : 3 mix |
| Answer» C. 1 : 2 : 4 mix | |
| 1998. |
If X, Y and Z are the fineness modulli of coarse, fine and combined aggregates, the percentage (P) of fine aggregates to combined aggregates, is |
| A. | A |
| B. | B |
| C. | C |
| D. | D |
| Answer» C. C | |
| 1999. |
Workability of concrete is measured by |
| A. | Vicat apparatus test |
| B. | Slump test |
| C. | Minimum void method |
| D. | Talbot Richard test. |
| Answer» C. Minimum void method | |
| 2000. |
Concrete mainly consists of |
| A. | cement |
| B. | aggregates |
| C. | admixture |
| D. | all the above. |
| Answer» E. | |