MCQOPTIONS
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MCQOPTIONS
This section includes 657 Mcqs, each offering curated multiple-choice questions to sharpen your Testing Subject knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
Bio-degradable detergents |
| A. | Can be readily oxidised |
| B. | Pose problem in sewerage plant |
| C. | Have an isoparaffinic structure |
| D. | Should not be used as it spoils the cloth |
| Answer» B. Pose problem in sewerage plant | |
| 2. |
The temperature in the calcium carbide furnace is __________ °C. |
| A. | 200-300 |
| B. | 700-850 |
| C. | 2000-2200 |
| D. | 4000-4500 |
| Answer» D. 4000-4500 | |
| 3. |
Platinum is a versatile catalyst for many processes in chemical industries. It is highly prone to be poisoned by the presence of |
| A. | Carbon |
| B. | Arsenic |
| C. | Lead |
| D. | Sulphur |
| Answer» C. Lead | |
| 4. |
Presence of H₂S in raw water (to be chlorinated) results in the |
| A. | Reduced softening capacity of zeolite |
| B. | Increased dosage of chlorine to provide a disinfecting residual in the water |
| C. | Easy removal of its hardness |
| D. | None of these |
| Answer» C. Easy removal of its hardness | |
| 5. |
Bakelite is |
| A. | Same as poly tetrafluoroethylene (PTFE) |
| B. | An inorganic polymer |
| C. | Same as thermosetting phenol-formaldehyde |
| D. | Not a polymer |
| Answer» D. Not a polymer | |
| 6. |
The main product of high temperature carbonisation of coal is |
| A. | Coke |
| B. | Ammonia |
| C. | Tar |
| D. | Phenol |
| Answer» B. Ammonia | |
| 7. |
Rancidity of the fatty oil can be reduced by its |
| A. | Decoloration |
| B. | Hydrogenation |
| C. | Oxidation |
| D. | Purification |
| Answer» C. Oxidation | |
| 8. |
Hydrogenation of edible vegetable oils |
| A. | Is an exothermic reaction |
| B. | Increases their melting point |
| C. | Is done in presence of nickel catalyst |
| D. | All of the above |
| Answer» E. | |
| 9. |
Lubricating greases are a mixture of |
| A. | Mineral oil, soap and additives |
| B. | Mineral oil and metallic soap |
| C. | Mineral oil and fatty oil |
| D. | Fatty oil and metallic soap |
| Answer» B. Mineral oil and metallic soap | |
| 10. |
Fatty material used in soap making is |
| A. | Fatty acid |
| B. | Fatty alcohols |
| C. | Tallow |
| D. | Detergents |
| Answer» D. Detergents | |
| 11. |
Salt is the basic raw material for the manufacture of |
| A. | Cement |
| B. | Glass |
| C. | Potteries |
| D. | Caustic soda |
| Answer» E. | |
| 12. |
Carbon tetrachloride (CCl₄) is the starting raw material for the manufacture of |
| A. | Trichloroethylene |
| B. | Perchloroethylene |
| C. | Parathion |
| D. | Methanol |
| Answer» C. Parathion | |
| 13. |
Phosphate rock is a raw material for the manufacture of |
| A. | Phosphoric acid |
| B. | Phosphorous |
| C. | Superphosphates |
| D. | All of the above |
| Answer» E. | |
| 14. |
__________ process is used for the commercial production of nitric acid by the catalytic oxidation of ammonia. |
| A. | Solvay |
| B. | Ostwald's |
| C. | Haber's |
| D. | None of these |
| Answer» C. Haber's | |
| 15. |
Vinyl chloride (CH₂ = CH.Cl) is produced by the thermal pyrolysis of ethylene dichloride at a pressure & temperature of |
| A. | 4 kgf/cm² & 500°C |
| B. | 10 kgf/cm² & 1000°C |
| C. | 40 kg/cm² & 200°C |
| D. | 100 kgi/cm² & 500°C |
| Answer» B. 10 kgf/cm² & 1000°C | |
| 16. |
Fermentator temperature during production of alcohol from molasses is around __________ °C. |
| A. | 5 |
| B. | 30 |
| C. | 150 |
| D. | 300 |
| Answer» C. 150 | |
| 17. |
Chemical name of aspirin (an analgesic drug) is |
| A. | Acetylsalicylic acid |
| B. | Nictonic acid |
| C. | Calcium acetate |
| D. | Methyl salicylate |
| Answer» B. Nictonic acid | |
| 18. |
Calcareous & argillaceous materials are used in the manufacture of |
| A. | Lead |
| B. | Cement |
| C. | Carbon disulphide |
| D. | None of these |
| Answer» C. Carbon disulphide | |
| 19. |
Nitroglycerene absorbed in wood flour, sodium nitrate or ammonium nitrate is commercially used as a controlled explosive called dynamite. The raw material used for its manufacture are glycerene, nitric acid and |
| A. | Sulphuric acid |
| B. | Phosphoric acid |
| C. | Hydrochloric acid |
| D. | Hydroflouric acid |
| Answer» B. Phosphoric acid | |
| 20. |
Penicillin is separated from fermented broth by |
| A. | Extraction with amyl or butyl acetate |
| B. | Ternery azeotropic distillation |
| C. | Evaporation in calendria |
| D. | Extractive distillation |
| Answer» B. Ternery azeotropic distillation | |
| 21. |
Raw materials for 'Solvay Process' for manufacture of the soda ash are |
| A. | Salt, limestone and coke or gas |
| B. | Ammonia, salt and limestone |
| C. | Ammonia limestone and coke |
| D. | None of these |
| Answer» B. Ammonia, salt and limestone | |
| 22. |
Digestion of wood-base materials (for manufacture of pulp) is done to |
| A. | Remove lignin |
| B. | Produce long fibres |
| C. | Prevent deterioration on storage |
| D. | None of these |
| Answer» B. Produce long fibres | |
| 23. |
__________ paper is used in the manufacture of newsprint paper. |
| A. | Groundwood |
| B. | Board |
| C. | Tissue |
| D. | Wrapping |
| Answer» B. Board | |
| 24. |
Antibiotic |
| A. | Inhibits/destroys the growth of microorganisms |
| B. | Is used as a pain reliever |
| C. | Is an antimalarial |
| D. | Is an anaesthetic |
| Answer» B. Is used as a pain reliever | |
| 25. |
Which of the following is used as a coagulant in treating turbid water? |
| A. | Chlorine |
| B. | Ferric sulphate |
| C. | Calcium sulphate |
| D. | Activated carbon |
| Answer» C. Calcium sulphate | |
| 26. |
Oxidation of ortho-xylene in presence of __________ catalyst is done to produce phthalic anhydride on commercial scale. |
| A. | Nickel |
| B. | Vanadium |
| C. | Alumina |
| D. | Iron |
| Answer» C. Alumina | |
| 27. |
Analgesic drugs are |
| A. | Pain relievers |
| B. | Antibiotics |
| C. | Used in the treatment of T.B. |
| D. | Used in the treatment of typhiod |
| Answer» B. Antibiotics | |
| 28. |
Which of the following is an organo-metal-lic compound? |
| A. | Isopropyl alcohol |
| B. | Tetra-ethyl lead |
| C. | Zeolite |
| D. | Cumene |
| Answer» C. Zeolite | |
| 29. |
Impurities present in brine is normally removed by treatment with |
| A. | NH₃ and CO₂ |
| B. | Lime and soda ash |
| C. | Lime, ammonia and carbon |
| D. | All of the above |
| Answer» E. | |
| 30. |
Reaction of an alcohol with organic acid is called the __________ reaction. |
| A. | Saponification |
| B. | Esterification |
| C. | Neutralisation |
| D. | Acidification |
| Answer» C. Neutralisation | |
| 31. |
All enzymes are made of |
| A. | Fats |
| B. | Carbohydrates |
| C. | Proteins |
| D. | Amino acids |
| Answer» D. Amino acids | |
| 32. |
__________ is produced using molasses as the starting raw material. |
| A. | Methyl alcohol |
| B. | Ethyl alcohol |
| C. | Benzol |
| D. | Dimethyl ether |
| Answer» C. Benzol | |
| 33. |
Electric bulbs are made of __________ glass. |
| A. | Jena |
| B. | Flint |
| C. | Crookes |
| D. | Pyrex |
| Answer» C. Crookes | |
| 34. |
Oxygen is produced by fractionation of air using __________ process. |
| A. | Linde's |
| B. | Claude's |
| C. | Either A or B |
| D. | None of these |
| Answer» D. None of these | |
| 35. |
Transportation of 35% oleum during winter suffers from the problem of freezing, which can be overcome by the addition of small quantity of |
| A. | Nitric acid |
| B. | Hydrochloric acid |
| C. | Methyl alcohol |
| D. | Formic acid |
| Answer» B. Hydrochloric acid | |
| 36. |
Alcohol is produced by the |
| A. | Oxidation of an aldehyde |
| B. | Hydrolysis of an ether |
| C. | Esterification of a fat |
| D. | None of these |
| Answer» C. Esterification of a fat | |
| 37. |
Addition of calcium oxide to water produces |
| A. | Exothermic heat |
| B. | Hissing sound |
| C. | Slaked lime |
| D. | All of the above |
| Answer» E. | |
| 38. |
In industrial nomenclature, alcohol means |
| A. | Butyl alcohol |
| B. | Propyl alcohol |
| C. | Ethanol |
| D. | Methyl alcohol |
| Answer» D. Methyl alcohol | |
| 39. |
Chemical name of Grignard reagent is |
| A. | Sodium thiosulphate |
| B. | Ethyl magnesium chloride |
| C. | Sodium sulphite |
| D. | Sodium bicarbonate |
| Answer» C. Sodium sulphite | |
| 40. |
Sizing material is incorporated in paper to |
| A. | Impart resistance to penetration by liquids |
| B. | Increase its thickness |
| C. | Increase its flexibility & opacity |
| D. | Increase its brightness |
| Answer» B. Increase its thickness | |
| 41. |
__________ nature of hypo (sodium thiosulphate) makes it useful in photography. |
| A. | Oxidising |
| B. | Reducing |
| C. | Complex forming |
| D. | Photochemical |
| Answer» D. Photochemical | |
| 42. |
Bakelite is chemically known as |
| A. | Polyvinyl chloride (PVC) |
| B. | Polybutadiene |
| C. | Phenol formaldehyde |
| D. | Polyurathane |
| Answer» D. Polyurathane | |
| 43. |
The major constituents of glass are |
| A. | Lime, clay and soda ash |
| B. | Sand, lime and soda ash |
| C. | Silica, alumina and clay |
| D. | Silica, alumina and soda ash |
| Answer» C. Silica, alumina and clay | |
| 44. |
Main constituent of dolomite is |
| A. | CaCO₃ |
| B. | MgCO₃ |
| C. | K₂CO₃ |
| D. | Na₂CO₃ |
| Answer» C. K₂CO₃ | |
| 45. |
Plasticisers are added to synthetic plastics to |
| A. | Impart flexibility |
| B. | Improve workability during fabrication |
| C. | Develop new improved properties not present in the original resins |
| D. | All of the above |
| Answer» E. | |
| 46. |
Polycaprolactum is commercially known as |
| A. | Nylon-6 |
| B. | Nylon-66 |
| C. | Dacron |
| D. | Rayon |
| Answer» B. Nylon-66 | |
| 47. |
Favourable conditions for the liquefaction of gases in general are |
| A. | High pressure & low temperature |
| B. | Low pressure & high temperature |
| C. | High pressure & high temperature |
| D. | Low pressure & low temperature |
| Answer» B. Low pressure & high temperature | |
| 48. |
Catalyst used in the manufacture of sulphuric acid by chamber & contact processes are respectively |
| A. | V₂O₅ & Cr₂O₃ |
| B. | Oxides of nitrogen & Cr₂O₃ |
| C. | V₂O₅ on a porous carrier & oxides of nitrogen |
| D. | Oxides of nitrogen & V₂O₅ on a porous carrier |
| Answer» E. | |
| 49. |
The basic difference between vegetable oils and fats is in their |
| A. | Density |
| B. | Chemical properties |
| C. | Physical state |
| D. | Composition |
| Answer» D. Composition | |
| 50. |
Washing soda is chemically represented by |
| A. | Na₂CO₃ |
| B. | Na₂CO₃.H₂O |
| C. | Na₂CO₃.10H₂O |
| D. | NaHCO₃ |
| Answer» D. NaHCO₃ | |