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. |
What remains in the tip of the match? |
| A. | red phosphorus |
| B. | white phosphorus |
| C. | phosphorus trichloride |
| D. | none of these |
| Answer» B. white phosphorus | |
| 2. |
What is the mineralogy of diamond? |
| A. | nitrogen |
| B. | Carbon |
| C. | Such as |
| D. | all these |
| Answer» C. Such as | |
| 3. |
Are there diamond and graphite? |
| A. | Symmetrical |
| B. | isobars |
| C. | amorphous |
| D. | isomer |
| Answer» D. isomer | |
| 4. |
Which gas is filled in seasonal balloons? |
| A. | Wind |
| B. | helium |
| C. | hydrogen |
| D. | nitrogen |
| Answer» C. hydrogen | |
| 5. |
Which one of the following acids is used in batteries? |
| A. | hydrochloric acid |
| B. | sulfurous acid |
| C. | sulphuric acid |
| D. | none of these |
| Answer» B. sulfurous acid | |
| 6. |
Which of the following is not oxidised? |
| A. | combustion |
| B. | precipitation |
| C. | digestion of food |
| D. | respiration |
| Answer» C. digestion of food | |
| 7. |
What is the purest form of water? |
| A. | distilled water |
| B. | rain water |
| C. | ground water |
| D. | canal water |
| Answer» C. ground water | |
| 8. |
What type of indicator is turmeric, litmus paper etc.? |
| A. | synthesized |
| B. | natural |
| C. | natural and synthetic |
| D. | other |
| Answer» C. natural and synthetic | |
| 9. |
What is water soluble ash called? |
| A. | base |
| B. | alkali |
| C. | corrosion |
| D. | erosion |
| Answer» C. corrosion | |
| 10. |
Which of the following medicine is used to treat indigestion? |
| A. | Antacid |
| B. | antibiotic |
| C. | analgesic |
| D. | antiseptic |
| Answer» B. antibiotic | |
| 11. |
Which substance is formed by the action of chlorine gas on dry slaked lime? |
| A. | calcium chloride |
| B. | Bleaching powder |
| C. | hydrochloric acid |
| D. | water |
| Answer» C. hydrochloric acid | |
| 12. |
Mainly one atom is present in an acid which reacts with the metal to produce a gas. |
| A. | hydrogen |
| B. | oxygen |
| C. | nitrogen |
| D. | ammonia |
| Answer» B. oxygen | |
| 13. |
Which of the following are strongly acidic? |
| A. | pH =7 |
| B. | pH =14 |
| C. | pH = 0 |
| D. | pH =3 |
| Answer» D. pH =3 | |
| 14. |
Litmus dye is purple in colour, which is extracted from? |
| A. | Red |
| B. | Lichen |
| C. | Cabbage Turmeric |
| D. | petunia flower |
| Answer» C. Cabbage Turmeric | |
| 15. |
Which of the following gas turns into liquid at lowest temperature? |
| A. | nitrogen |
| B. | helium |
| C. | oxygen |
| D. | hydrogen |
| Answer» E. | |
| 16. |
What type of acid is found in curd? |
| A. | lactic acid |
| B. | citric acid |
| C. | oxalic acid |
| D. | other |
| Answer» B. citric acid | |
| 17. |
The amount of chlorine available in water after disinfection is called? |
| A. | free available chlorine |
| B. | Combined Available Chlorine |
| C. | free chlorine |
| D. | residual chlorine |
| Answer» E. | |
| 18. |
The substances which have sour taste and which turn blue litmus solution red are called? |
| A. | acid |
| B. | salt |
| C. | ashes |
| D. | base |
| Answer» B. salt | |
| 19. |
Which of the following is the main harmful gas emitted by automobiles which causes air pollution? |
| A. | Carbon dioxide |
| B. | carbon monoxide |
| C. | methane |
| D. | ozone gas |
| Answer» C. methane | |
| 20. |
For vulcanization of rubber, it is added to? |
| A. | Carbon |
| B. | Phosphorus |
| C. | methane |
| D. | Sulphur |
| Answer» E. | |
| 21. |
Which element is abundant in the human body? |
| A. | oxygen |
| B. | Carbon |
| C. | nitrogen |
| D. | Iron |
| Answer» B. Carbon | |
| 22. |
Which is a fire extinguishing gas? |
| A. | nitrogen |
| B. | Carbon dioxide |
| C. | oxygen |
| D. | none of these |
| Answer» C. oxygen | |
| 23. |
Laughing gas? |
| A. | helium |
| B. | nitrogen |
| C. | nitrous oxide |
| D. | hydrogen |
| Answer» D. hydrogen | |
| 24. |
How many milligram is one carat of diamond? |
| A. | 155 mg |
| B. | 250 mg |
| C. | 200 mg |
| D. | 150 mg |
| Answer» D. 150 mg | |
| 25. |
happens in the sun? |
| A. | hydrogen and helium |
| B. | nitrogen |
| C. | oxygen |
| D. | Phosphorus |
| Answer» B. nitrogen | |
| 26. |
Oxides of non-metals are usually? |
| A. | acidic |
| B. | Moody |
| C. | alkaline |
| D. | none of these |
| Answer» D. none of these | |
| 27. |
Phosphorus is abundantly found in what? |
| A. | Vitamins |
| B. | protein |
| C. | fat |
| D. | none of these |
| Answer» C. fat | |
| 28. |
The gas which is used in the formation of vegetation is? |
| A. | oxygen |
| B. | hydrogen |
| C. | nitrogen |
| D. | helium |
| Answer» C. nitrogen | |
| 29. |
Which of the following substances is made up of only one element? |
| A. | glass |
| B. | Water |
| C. | Diamond |
| D. | sand |
| Answer» D. sand | |
| 30. |
Which of the following is called universal solvent? |
| A. | Water |
| B. | Benzene |
| C. | alcohol |
| D. | acid |
| Answer» B. Benzene | |
| 31. |
Which of the following substances is a supercooled liquid? |
| A. | wood |
| B. | glass |
| C. | Ice Cream |
| D. | ammonia |
| Answer» C. Ice Cream | |
| 32. |
Which of the following is not a non-metal? |
| A. | Sulphur |
| B. | aluminum |
| C. | Carbon |
| D. | nitrogen |
| Answer» C. Carbon | |
| 33. |
Which element is known as stray element in chemistry? |
| A. | oxygen |
| B. | nitrogen |
| C. | hydrogen |
| D. | Carbon |
| Answer» D. Carbon | |
| 34. |
What is mainly contained in natural gas? |
| A. | ethane |
| B. | butane |
| C. | propane |
| D. | methane |
| Answer» E. | |
| 35. |
Which element is not found in fertilizer? |
| A. | hydrogen |
| B. | chlorine |
| C. | nitrogen |
| D. | none of these |
| Answer» C. nitrogen | |
| 36. |
Who is the discoverer of hydrogen? |
| A. | Priestley |
| B. | Cavendish |
| C. | eure |
| D. | Levizer |
| Answer» C. eure | |
| 37. |
How do plants take up nitrogen? |
| A. | nitrite |
| B. | Nitrogen oxide |
| C. | nitrous oxide |
| D. | nitrates |
| Answer» E. | |
| 38. |
What is the substance formed as a result of the reaction of acids and bases called? |
| A. | salt |
| B. | Easter |
| C. | alcohol |
| D. | acid |
| Answer» B. Easter | |
| 39. |
What is the tendency to lose electrons called? |
| A. | motivation |
| B. | Revision |
| C. | oxidation |
| D. | none of these |
| Answer» D. none of these | |
| 40. |
What is the pH level of a normal person's blood? |
| A. | 3.5 - 4.5 |
| B. | 7.35 - 7.45 |
| C. | 5.45 - 6.55 |
| D. | 7.35 - 7.55 |
| Answer» C. 5.45 - 6.55 | |
| 41. |
What is an aqueous solution of ammonium chloride? |
| A. | Moody |
| B. | colorful |
| C. | alkaline |
| D. | none of these |
| Answer» D. none of these | |
| 42. |
What is the process associated with the burning of hydrogen? |
| A. | Revision |
| B. | hydrogenation |
| C. | motivation |
| D. | oxidation |
| Answer» E. | |
| 43. |
Substances that give heat when burned are called? |
| A. | Coal |
| B. | fuel |
| C. | Warming |
| D. | igniter |
| Answer» C. Warming | |
| 44. |
Dung gas mainly contains? |
| A. | methane |
| B. | acetylene |
| C. | Ethylene |
| D. | none of these |
| Answer» B. acetylene | |
| 45. |
The photooxidation process is started by? |
| A. | by trigger |
| B. | by light |
| C. | By heat |
| D. | By oxygen |
| Answer» C. By heat | |
| 46. |
Which of the following compounds does not have an ionic bond? |
| A. | calcium chloride |
| B. | methane |
| C. | Sodium chloride |
| D. | none of these |
| Answer» C. Sodium chloride | |
| 47. |
Isobars are produced by the emission of which of the following? |
| A. | alpha ray |
| B. | beta ray |
| C. | gamma ray |
| D. | x rays |
| Answer» C. gamma ray | |
| 48. |
Which radioisotope is used to control blood cancer? |
| A. | cobalt-60 |
| B. | sodium-24 |
| C. | Iodine-131 |
| D. | none of these |
| Answer» B. sodium-24 | |
| 49. |
What is the number of isotopes of polonium? |
| A. | 20 |
| B. | 25 |
| C. | 27 |
| D. | 24 |
| Answer» D. 24 | |
| 50. |
What is the tendency to accept electrons called? |
| A. | oxidation |
| B. | Revision |
| C. | motivation |
| D. | inducement |
| Answer» C. motivation | |