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. |
Which one of the following is used as a sowing agent in the preparation of soft drinks? |
| A. | hosphoric acid |
| B. | hosphorus acid |
| C. | alicylic acid |
| D. | oric acid |
| Answer» B. hosphorus acid | |
| 2. |
Which of the following is not a nitrogenous fetiliser? |
| A. | mmonium sulphate |
| B. | rea |
| C. | mmonium nitrate |
| D. | uperphosphate |
| Answer» E. | |
| 3. |
Which one of the following is used as an anti-freeze for the automobile engines ? |
| A. | ropyl alcohol |
| B. | thanol |
| C. | ethanol |
| D. | thylene glycol |
| Answer» E. | |
| 4. |
The chemical used in developing photographic films is |
| A. | ilver bromide |
| B. | ypo |
| C. | odium sulphate |
| D. | ydroquinone |
| Answer» B. ypo | |
| 5. |
Poison used for killing rats is |
| A. | alcium phosphide (Ca3P2) |
| B. | inc phosphide (Zn3P2) |
| C. | agnesium nitride (Mg3N2) |
| D. | agnesium phosphide (Mg3P2) |
| Answer» C. agnesium nitride (Mg3N2) | |
| 6. |
Which of the following is a natural dye ? |
| A. | rystal violet |
| B. | niline blue |
| C. | lizarin |
| D. | henolphthalein |
| Answer» D. henolphthalein | |
| 7. |
The advantage of detergents over soaps is |
| A. | etergents are soluble in water |
| B. | etergents could not give much lather |
| C. | etergents give lather even with hard water |
| D. | oaps give lather with only soft water |
| Answer» D. oaps give lather with only soft water | |
| 8. |
Tear gas used by the police to disperse the mob contains |
| A. | arbon dioxide |
| B. | hlorine |
| C. | mmonia |
| D. | ydrogen sulphide |
| Answer» C. mmonia | |
| 9. |
Which of the following is an antidiabatic drug? |
| A. | nsulin |
| B. | enicillin |
| C. | hloroquine |
| D. | spirin |
| Answer» B. enicillin | |
| 10. |
Which of the following statements are correct about chloroform? a. Liquid fuel b. Anaesthetic in nature c. Produces phosgene d. Fire extinguisher |
| A. | , B |
| B. | , C |
| C. | , C |
| D. | , A |
| Answer» D. , A | |
| 11. |
Many people died in London in 1952 as result of air pollution producing |
| A. | ist |
| B. | og |
| C. | mog |
| D. | leet |
| Answer» D. leet | |
| 12. |
Ultraviolet radiation striking the earth is due to the depletion of |
| A. | arbon monoxide |
| B. | arbon dioxide |
| C. | zone |
| D. | xygen |
| Answer» D. xygen | |
| 13. |
Which of the following is a secondary pollutant ? |
| A. | O |
| B. | O |
| C. | O2 |
| D. | AN |
| Answer» C. O2 | |
| 14. |
Charcoal is used in water treatment as a/an |
| A. | bsorbent |
| B. | oagulant |
| C. | olvent |
| D. | dsorbent |
| Answer» E. | |
| 15. |
Ferrous sulphate is used in water treatment as a/an |
| A. | xidizing agent |
| B. | educing agent |
| C. | oagulant aid |
| D. | dsorbent |
| Answer» D. dsorbent | |
| 16. |
Which of the toxic heavy metals is found in modern tannery industries ? |
| A. | ickel |
| B. | inc |
| C. | hromium |
| D. | ead |
| Answer» D. ead | |
| 17. |
The chemical name of rat poison is |
| A. | inc oxide |
| B. | otassium cyanide |
| C. | ead nitrate |
| D. | inc phosphide |
| Answer» E. | |
| 18. |
Malathion is a/an |
| A. | nsecticide |
| B. | umigant |
| C. | reservative |
| D. | esticide |
| Answer» B. umigant | |
| 19. |
The most commonly used chemicals in the artificial rainmaking or cloud seeding are |
| A. | ilver Iodide (AgI) |
| B. | odium Chloride (NaCl) |
| C. | ry Ice (Frozen CO2) |
| D. | ll of the above |
| Answer» B. odium Chloride (NaCl) | |
| 20. |
The function of sedimentation tank in sewage treatment is to: |
| A. | isinfect the sewage |
| B. | emove water content |
| C. | erate the sewage |
| D. | emove suspended solids |
| Answer» E. | |
| 21. |
Bhopal gas tragedy is associated with leakage of |
| A. | arbon dioxide |
| B. | itrogen dioxide |
| C. | ulphur dioxide |
| D. | ethyl isocyanate |
| Answer» E. | |
| 22. |
Kinetics is the study of: |
| A. | he rate of chemical reaction |
| B. | ow fast the reactions go |
| C. | he mechanisms and paths of the molecules take in joining from one reactant to products |
| D. | ll of these are correct |
| Answer» E. | |
| 23. |
In a reaction of the type A+B -> C+D one could ensure it to be a first order reaction by : |
| A. | ncreasing the temperature |
| B. | ncreasing the concentration of a product |
| C. | ncreasing the concentration of a reactant |
| D. | dding a catalyst |
| Answer» D. dding a catalyst | |
| 24. |
When a bond is formed between two atoms, the energy of the system will |
| A. | ncrease |
| B. | ecrease |
| C. | emain the same |
| D. | ay increase or decrease |
| Answer» D. ay increase or decrease | |
| 25. |
Which of the following kinds of spectroscopy can provide information on the energy difference between the initial and final states rather the energy levels involved in the transition? |
| A. | V absorption spectroscopy |
| B. | V photoelectron spectroscopy |
| C. | nfrared absorption spectroscopy |
| D. | otational spectroscopy |
| Answer» C. nfrared absorption spectroscopy | |
| 26. |
Spontaneous change is one in which there is: |
| A. | lowering of entropy |
| B. | lowering of free energy |
| C. | ncrease in free energy |
| D. | n increase in Internal energy |
| Answer» C. ncrease in free energy | |
| 27. |
Which one of the following species has the highest bond order, shortest bond length and maximum bond strength? |
| A. | 2 |
| B. | 2 |
| C. | -2 |
| D. | -22 |
| Answer» C. -2 | |
| 28. |
Mark the compound which possess ionic, covalent and coordinate bonds. |
| A. | H4Cl |
| B. | O3 |
| C. | O2 |
| D. | 2O |
| Answer» B. O3 | |
| 29. |
Gunpowder consists of a mixture of |
| A. | and and TNT |
| B. | NT and charcoal |
| C. | itre, sulphur and charcoal |
| D. | ulphur, sand and charcoal |
| Answer» D. ulphur, sand and charcoal | |
| 30. |
DDT and BHC may act as |
| A. | llergens |
| B. | arcinogens |
| C. | sthematic agents |
| D. | one of these |
| Answer» C. sthematic agents | |
| 31. |
The element used for making solar cells is |
| A. | agnesium |
| B. | odium |
| C. | alcium |
| D. | ilicon |
| Answer» E. | |
| 32. |
One of the constituents of tear gas is |
| A. | thane |
| B. | thanol |
| C. | ther |
| D. | hloropicrin |
| Answer» E. | |
| 33. |
Stains of rust on clothes can be removed by : |
| A. | xalic acid |
| B. | etrol |
| C. | lcohol |
| D. | 2O2 |
| Answer» B. etrol | |
| 34. |
Which of the following chemicals is used in photography ? |
| A. | luminium hydroxide |
| B. | ilver bromide |
| C. | otassium nitrate |
| D. | odium chloride |
| Answer» C. otassium nitrate | |
| 35. |
Which one of the following chemicals helps in fruit ripening? |
| A. | thephon |
| B. | trazine |
| C. | soproturan |
| D. | alathion |
| Answer» B. trazine | |
| 36. |
Detergents used for cleaning clothes and utensils contain |
| A. | itrates |
| B. | icarbonates |
| C. | ulphonates |
| D. | ismuthates |
| Answer» D. ismuthates | |
| 37. |
Electric fuse is an alloy of |
| A. | in and lead |
| B. | inc and lead |
| C. | opper and iron |
| D. | arbon and tin |
| Answer» B. inc and lead | |
| 38. |
Laughing gas is |
| A. | itric oxide |
| B. | itrous oxide |
| C. | itrogen trioxide |
| D. | itrogen pentoxide |
| Answer» C. itrogen trioxide | |
| 39. |
Soap helps in better cleaning of clothes because |
| A. | oap acts like catalyst |
| B. | t reduces the surface tension of solution |
| C. | t gives strength to solution |
| D. | t absorbs the dirt |
| Answer» C. t gives strength to solution | |
| 40. |
By-product obtained by soap industry is |
| A. | austic soda |
| B. | lycerol |
| C. | aphthalene |
| D. | austic potash |
| Answer» C. aphthalene | |
| 41. |
Aspirin is common name of |
| A. | alicylic Acid |
| B. | alicylate |
| C. | ethyl Salicylate |
| D. | cetyl Salicylic Acid |
| Answer» E. | |
| 42. |
Aspirin is |
| A. | ethoxy benzoic acid |
| B. | ethyl Salicilate |
| C. | cetyl Salicilic acid |
| D. | henyl Salicilate |
| Answer» D. henyl Salicilate | |
| 43. |
Antacid tablets consist of |
| A. | ydroxides of sodium, magnesium and aluminium |
| B. | ydroxides of magnesium and aluminium |
| C. | ydroxides of sodium and aluminium |
| D. | ydroxides of magnesium and sodium |
| Answer» C. ydroxides of sodium and aluminium | |
| 44. |
Alum is used as |
| A. | n analgesic |
| B. | fertilizer |
| C. | disinfectant |
| D. | purifier for water |
| Answer» E. | |
| 45. |
Commercial Vaseline is derived from |
| A. | lant gums |
| B. | oal tar |
| C. | ool wax |
| D. | etroleum |
| Answer» E. | |
| 46. |
This group of alumino-silicate minerals is widely used in making electrical insulators |
| A. | auxite |
| B. | hromite |
| C. | anganese |
| D. | ica |
| Answer» E. | |
| 47. |
The element used in the manufacture of safety matches is |
| A. | hosphorous |
| B. | agnesium |
| C. | ilicon |
| D. | ulphur |
| Answer» B. agnesium | |
| 48. |
A detergent is a |
| A. | leansing agent |
| B. | rug |
| C. | atalyst |
| D. | oap |
| Answer» B. rug | |
| 49. |
KMnO4 can be used as |
| A. | nsecticide |
| B. | ertilizer |
| C. | esticide |
| D. | isinfectant |
| Answer» E. | |
| 50. |
Which one of the following vegetable oils is used in the manufacture of paints? |
| A. | alm oil |
| B. | unflower oil |
| C. | inseed oil |
| D. | ottonseed oil |
| Answer» D. ottonseed oil | |