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. |
The gas used for artificial fruit ripening of green fruit is |
| A. | thylene |
| B. | cetylene |
| C. | thane |
| D. | ethane |
| Answer» B. cetylene | |
| 2. |
Freon used as refrigerant is chemically |
| A. | hlorinated hydrocarbon |
| B. | luorinated hydrocarbon |
| C. | hlorofluoro hydrocarbon |
| D. | luorinated aromatic compound |
| Answer» D. luorinated aromatic compound | |
| 3. |
Which of the following is used for refrigeration? |
| A. | ulphur dioxide |
| B. | hlorine |
| C. | reon |
| D. | hosphine |
| Answer» D. hosphine | |
| 4. |
The pair of compounds used as anaesthetic in medicines : |
| A. | ther, Ammonia |
| B. | itrous oxide, Chloroform |
| C. | hloroform, Nitrogen dioxide |
| D. | itrogen dioxide, ether |
| Answer» C. hloroform, Nitrogen dioxide | |
| 5. |
Which of the following is not a nitrogenous fertilizer ? |
| A. | a(CN)2 |
| B. | aCN2 |
| C. | H4NO3 |
| D. | rea |
| Answer» B. aCN2 | |
| 6. |
The compound to which H2 does not add is |
| A. | iphenyl ethylene |
| B. | etraphenyl ethylene |
| C. | etra – a –naphthylethylene |
| D. | etra –9 – phenanthrylethylene |
| Answer» C. etra – a –naphthylethylene | |
| 7. |
Saccharin is made up of |
| A. | oluene |
| B. | henol |
| C. | ropane |
| D. | utane |
| Answer» B. henol | |
| 8. |
Which one is the simplest aromatic hydrocarbon? |
| A. | spirin |
| B. | enzene |
| C. | hloride |
| D. | icric acid |
| Answer» C. hloride | |
| 9. |
Benzene cannot undergo : |
| A. | ubstitution |
| B. | ddition |
| C. | limination |
| D. | xidation |
| Answer» D. xidation | |
| 10. |
Adding Cl2 to benzene in the presence of AlCl3 is an example of : |
| A. | limination reaction |
| B. | ubstitution reaction |
| C. | one of the options |
| D. | ddition reaction |
| Answer» C. one of the options | |
| 11. |
Wax used for making candle is chemically a mixture of |
| A. | liphatic hydrocarbons |
| B. | romatic hydrocarbons |
| C. | yclic hydrocarbons |
| D. | liphatic and aromatic hydrocarbons |
| Answer» B. romatic hydrocarbons | |
| 12. |
When conc. H2SO4 is added to dry KNO3, brown fumes are evolved. These fumes are due to |
| A. | O3 |
| B. | O2 |
| C. | O2 |
| D. | 2O |
| Answer» D. 2O | |
| 13. |
Sulphuric acid is |
| A. | onobasic |
| B. | ibasic |
| C. | ribasic |
| D. | etrabasic |
| Answer» C. ribasic | |
| 14. |
Which one of the following nonmetals shows allotropy in the liquid state? |
| A. | arbon |
| B. | ulphur |
| C. | hosphorous |
| D. | romine |
| Answer» C. hosphorous | |
| 15. |
The most suitable vessel for storing concentrated sulphuric acid is |
| A. | opper vessel |
| B. | luminium vessel |
| C. | lass vessel |
| D. | arthen vessel |
| Answer» D. arthen vessel | |
| 16. |
Who first published the periodic table? |
| A. | ohn Dalton |
| B. | ulius Lothar Meyer |
| C. | enry Moseley |
| D. | mitri Mendeleev |
| Answer» E. | |
| 17. |
Which one is the most reactive halogen? |
| A. | odine |
| B. | romine |
| C. | luorine |
| D. | hlorine |
| Answer» D. hlorine | |
| 18. |
Ionisation energy of nitrogen is greater than that of oxygen because nitrogen has |
| A. | igh bond dissociation energy |
| B. | maller atomic radius |
| C. | table half filled 2p sub level |
| D. | igh nuclear charge |
| Answer» D. igh nuclear charge | |
| 19. |
Which of the following laser types is used in a laser printer? |
| A. | ye laser |
| B. | emiconductor laser |
| C. | xcimer laser |
| D. | as laser |
| Answer» C. xcimer laser | |
| 20. |
Gypsum is used for improvement of: |
| A. | lkaline soils |
| B. | aline soils |
| C. | odsols |
| D. | cidic soils |
| Answer» C. odsols | |
| 21. |
Aspirin is chemically known as |
| A. | ethyl salicylate |
| B. | ydroxysalicylate |
| C. | cetylsalicylic acid |
| D. | lkylsalicylic acid |
| Answer» D. lkylsalicylic acid | |
| 22. |
Which of the following is used as anesthetic ? |
| A. | H3 |
| B. | O |
| C. | O2 |
| D. | 2O |
| Answer» C. O2 | |
| 23. |
The chemical used for cloud seeding for artificial rains is |
| A. | ilver Nitrate |
| B. | otassium Bromide |
| C. | ilver Iodide |
| D. | otassium Nitrate |
| Answer» D. otassium Nitrate | |
| 24. |
The chemical name of 'laughing gas' is |
| A. | itric oxide |
| B. | itrogen dioxide |
| C. | itrogen pentoxide |
| D. | itrous oxide |
| Answer» E. | |
| 25. |
Which of the following is used to remove ink and rust stains on cloth? |
| A. | xalic acid |
| B. | lcohol |
| C. | ther |
| D. | erosene oil |
| Answer» B. lcohol | |
| 26. |
Exposure to mixtures of chemicals are greater than expected on the basis of effects of exposure to each chemical individually. This is known as |
| A. | dditives |
| B. | ntagonism |
| C. | ynergism |
| D. | ndependent |
| Answer» D. ndependent | |
| 27. |
The chemical used in embalming biological materials is |
| A. | ormaldehyde in water |
| B. | ormaldehyde in methanol |
| C. | thylene glycol |
| D. | aseous formaldehyde |
| Answer» B. ormaldehyde in methanol | |
| 28. |
The common refrigerant in domestic refrigerator is |
| A. | eon |
| B. | xygen |
| C. | itrogen |
| D. | reon |
| Answer» E. | |
| 29. |
The gas used in the artificial ripening of fruits is |
| A. | cetylene |
| B. | ethane |
| C. | thane |
| D. | utane |
| Answer» B. ethane | |
| 30. |
Commonly used antiseptic 'Dettol' is a mixture of |
| A. | -chlorophenoxylenol + terepineol |
| B. | -cresol + terepineol |
| C. | henol + terepineol |
| D. | hloroxylenol + terepineol |
| Answer» E. | |
| 31. |
Synthetic detergents are made from |
| A. | odium stearate |
| B. | odium salt of benzene sulphonic acid |
| C. | odium salt of benzene carboxylic acid |
| D. | odium palmitate |
| Answer» C. odium salt of benzene carboxylic acid | |
| 32. |
Who developed Hydrogen Bomb? |
| A. | ernher Von Braun |
| B. | . Robert Oppen Heimer |
| C. | dward Teller |
| D. | amuel Cohen |
| Answer» D. amuel Cohen | |
| 33. |
Silver halides are used in photographic plates because they are |
| A. | xidised in air |
| B. | oluble in hyposolution |
| C. | educed by light |
| D. | otally colourless |
| Answer» D. otally colourless | |
| 34. |
Iodex, a pain relief balm, has the smell of ________ . |
| A. | ethyl salicylate |
| B. | thyl salicylate |
| C. | ropyl salicylate |
| D. | utyl salicylate |
| Answer» B. thyl salicylate | |
| 35. |
What is a mixture of potassium nitrate, powdered charcoal and sulphur called? |
| A. | lass |
| B. | ement |
| C. | aint |
| D. | un powder |
| Answer» E. | |
| 36. |
Which is not an anasthetic agent in surgical operations? |
| A. | hloroform |
| B. | ther |
| C. | itrous oxide |
| D. | cetone |
| Answer» E. | |
| 37. |
Which of the following is used to remove rust stains on cloth? |
| A. | erosene |
| B. | ime |
| C. | xalic acid solution |
| D. | etrol |
| Answer» D. etrol | |
| 38. |
Substance used as an anti freeze in radiators of automobiles is : |
| A. | ethyl alcohol and H2O |
| B. | ethyl alcohol |
| C. | thyl alcohol |
| D. | thyl alcohol and H2O |
| Answer» B. ethyl alcohol | |
| 39. |
The metal compound commonly found in Sindhoor or Kumkum is based on |
| A. | in |
| B. | ead |
| C. | opper |
| D. | inc |
| Answer» C. opper | |
| 40. |
Detergents are |
| A. | odium salts of fatty acids |
| B. | odium salts of sulphonic acids |
| C. | odium salt of benzoic acid |
| D. | one of the above |
| Answer» C. odium salt of benzoic acid | |
| 41. |
The oldest rocks in the earth's crust were once molten, and came from deep inside the earth. The molten rock, called magma, spewed out in volcanic eruptions during the earth's early life and solidified into hard rock's called |
| A. | ranite |
| B. | asalt |
| C. | gneous rocks |
| D. | edimentary rocks |
| Answer» D. edimentary rocks | |
| 42. |
The number of g-molecule of oxygen in 6.02 x 1024 CO molecules is |
| A. | gram of molecule |
| B. | .5 gram of molecule |
| C. | gram of molecule |
| D. | 0 gram of molecule |
| Answer» D. 0 gram of molecule | |
| 43. |
The metal that is used as a catalyst in the hydrogenation of oils is |
| A. | Ni |
| B. | Pb |
| C. | Cu |
| D. | Pt |
| Answer» B. Pb | |
| 44. |
The most electropositive elements among the following is |
| A. | Na |
| B. | Ca |
| C. | K |
| D. | Cs |
| Answer» E. | |
| 45. |
The molecular formula of phosphorous is |
| A. | P1 |
| B. | P2 |
| C. | P3 |
| D. | P4 |
| Answer» E. | |
| 46. |
The inexpensive and commonly used variety of glass is called soda glass. It is called so because |
| A. | was used initially for making bottles of soda(carbonated drink) |
| B. | is made using soda(sodium carbonate) |
| C. | was initially used for storing sodium carbonate |
| D. | is made using soda lime |
| Answer» C. was initially used for storing sodium carbonate | |
| 47. |
The mass number of an atom is equal to |
| A. | the number of protons |
| B. | the number of protons and electrons |
| C. | the number of nucleons |
| D. | the number of neutrons |
| Answer» D. the number of neutrons | |
| 48. |
The oil used in the froth floatation process is |
| A. | coconut oil |
| B. | olive oil |
| C. | kerosene oil |
| D. | pine oil |
| Answer» E. | |
| 49. |
The mineral containing both magnesium and calcium is |
| A. | magnesite |
| B. | calcite |
| C. | carnallite |
| D. | dolomite |
| Answer» E. | |
| 50. |
The isomerism which exists between CH3CHCI2 and CH2CI. CH2CI is |
| A. | chain isomerism |
| B. | functional group isomerism |
| C. | positional isomerism |
| D. | metamerism |
| Answer» D. metamerism | |