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. |
Effusion occurs in region of |
| A. | High pressure |
| B. | low pressure |
| C. | high area |
| D. | high volume |
| Answer» B. low pressure | |
| 2. |
Example of a polar gas is |
| A. | hydrogen |
| B. | Ammonia |
| C. | helium |
| D. | neon |
| Answer» C. helium | |
| 3. |
116 torr is partial pressure of oxygen in |
| A. | blood |
| B. | lungs |
| C. | air spaces |
| D. | cells |
| Answer» C. air spaces | |
| 4. |
Unit of pressure pounds per square inch is used in |
| A. | meteorologists |
| B. | mathematics |
| C. | sea level |
| D. | engineering |
| Answer» E. | |
| 5. |
Nitrogen forms N₂(g) through |
| A. | single covalent bond |
| B. | double covalent bond |
| C. | triple covalent bond |
| D. | ionic bond |
| Answer» D. ionic bond | |
| 6. |
If we use calorie unit to determine R its value becomes |
| A. | 1.987 |
| B. | 1.876 |
| C. | 1.657 |
| D. | 1.786 |
| Answer» B. 1.876 | |
| 7. |
Gas having low value of 'a' is |
| A. | chlorine |
| B. | sulphurdioxide |
| C. | ammonia |
| D. | hydrogen bonding |
| Answer» E. | |
| 8. |
Liquids have definite |
| A. | Shape |
| B. | volume |
| C. | surfaces |
| D. | forces |
| Answer» C. surfaces | |
| 9. |
Aqueous tension is pressure exerted by |
| A. | molecules of gas |
| B. | water vapors |
| C. | ions |
| D. | atoms |
| Answer» C. ions | |
| 10. |
The systematic name of sulfur trioxide is |
| A. | sulfur(III) oxide |
| B. | sulfur(IV) oxide |
| C. | sulfur(VI) oxide |
| D. | sulfur(V) oxide |
| Answer» D. sulfur(V) oxide | |
| 11. |
Compressed gas is cooled in condition when it is expanded in area of |
| A. | high temperature |
| B. | low temperature |
| C. | low volume |
| D. | low pressure |
| Answer» E. | |
| 12. |
Low temperature plasma are usually kept in |
| A. | vacuum |
| B. | cold place |
| C. | hot area |
| D. | open atmosphere |
| Answer» B. cold place | |
| 13. |
When heated, the metal that results in a change of state to gas is |
| A. | Si(s) |
| B. | Al(s) |
| C. | S(s) |
| D. | P(s) |
| Answer» D. P(s) | |
| 14. |
Clausius was scientist who derived |
| A. | volume equation |
| B. | kinetic equation of gases |
| C. | kinetic theory of gases |
| D. | laws of pressure |
| Answer» C. kinetic theory of gases | |
| 15. |
Constant used in Boyle's law is |
| A. | pressure |
| B. | temperature |
| C. | volume |
| D. | energy |
| Answer» C. volume | |
| 16. |
Critical temperature of a gas is a temperature above which gas does not remain |
| A. | solid |
| B. | liquid |
| C. | gases |
| D. | plasma |
| Answer» C. gases | |
| 17. |
0 degree Celsius is equal to |
| A. | 240 K |
| B. | 296k |
| C. | 286K |
| D. | 273K |
| Answer» E. | |
| 18. |
Collisions of gas molecules help to change |
| A. | surface area |
| B. | direction |
| C. | area |
| D. | unit pressure |
| Answer» C. area | |
| 19. |
Plasma which is more reactive has |
| A. | high pressure |
| B. | low temperature |
| C. | low surface area |
| D. | low polarizability |
| Answer» C. low surface area | |
| 20. |
Nitrogen always exists as |
| A. | mono atomic |
| B. | di-atomic molecule |
| C. | sub-molecule |
| D. | tertiary molecule |
| Answer» C. sub-molecule | |
| 21. |
Mixture containing ions ,atoms and electrons is known as |
| A. | solid |
| B. | liquid |
| C. | plasma |
| D. | gas |
| Answer» D. gas | |
| 22. |
Element that does not react with oxygen is |
| A. | Mg(s) |
| B. | P(s) |
| C. | S(s) |
| D. | Cl(s) |
| Answer» E. | |
| 23. |
Kinetic energy of gases is usually directly changes with |
| A. | pressure |
| B. | temperature |
| C. | volume |
| D. | density |
| Answer» C. volume | |
| 24. |
Plasma can be used in sterilization of |
| A. | households |
| B. | sanitary |
| C. | medical products |
| D. | water |
| Answer» D. water | |
| 25. |
In deducing Charle's law from kinetic equation of gases constant is |
| A. | 9P/6k |
| B. | 6k/9P |
| C. | 3k/2P |
| D. | 2k/3P |
| Answer» E. | |
| 26. |
Partial pressure is equal to total pressure multiply by |
| A. | mole fraction |
| B. | volume |
| C. | density |
| D. | molar weight |
| Answer» B. volume | |
| 27. |
Diffusion and effusion is least present in |
| A. | gases |
| B. | liquids |
| C. | solids |
| D. | plasma |
| Answer» C. solids | |
| 28. |
Nitrogen gas is found in a group of the periodic table of |
| A. | V |
| B. | VII |
| C. | VI |
| D. | X |
| Answer» B. VII | |
| 29. |
Uniform behaviour is shown by gases towards |
| A. | internal conditions |
| B. | atmosphere |
| C. | external conditions |
| D. | sea level |
| Answer» D. sea level | |
| 30. |
The product that has the liquid state in four of the following is |
| A. | MgCl₂ |
| B. | PCl₅ |
| C. | Al₂Cl₆ |
| D. | NaCl |
| Answer» C. Al₂Cl₆ | |
| 31. |
Gas molecules do not posses definite |
| A. | atoms |
| B. | molecules |
| C. | volume |
| D. | state |
| Answer» D. state | |
| 32. |
Gases which have very low critical temperature are usually |
| A. | polar |
| B. | non polar |
| C. | high molecular weight |
| D. | low molecular weight |
| Answer» C. high molecular weight | |
| 33. |
In Avogadro's law volume is directly proportional to |
| A. | Pressure |
| B. | (no of moles) |
| C. | Volume |
| D. | Temperature |
| Answer» C. Volume | |
| 34. |
Diffusion and effusion is property of |
| A. | Gases |
| B. | liquids |
| C. | solids |
| D. | plasma |
| Answer» B. liquids | |
| 35. |
Boiling point of water on kelvin scale is |
| A. | 273 |
| B. | 373 |
| C. | 253 |
| D. | 267 |
| Answer» C. 253 | |
| 36. |
Process of diffusion of gases is |
| A. | spontaneous |
| B. | non spontaneous |
| C. | fast |
| D. | slow |
| Answer» B. non spontaneous | |
| 37. |
Color of NO₂ gas is |
| A. | black |
| B. | blue |
| C. | brown |
| D. | pink |
| Answer» D. pink | |
| 38. |
760 mm of Hg is pressure taken at temperature of |
| A. | 1 °c |
| B. | 0 °c |
| C. | 5 °c |
| D. | 3 °c |
| Answer» C. 5 °c | |
| 39. |
Melting point of ice at Fahrenheit is |
| A. | 32 degree |
| B. | 212 degree |
| C. | 100 degree |
| D. | 75 degree |
| Answer» B. 212 degree | |
| 40. |
In defining Charle's law volume is directly proportional to |
| A. | temperature |
| B. | pressure |
| C. | moles |
| D. | atoms |
| Answer» B. pressure | |
| 41. |
Collisions which are produced by gas molecules are |
| A. | easy |
| B. | elastic |
| C. | non elastic |
| D. | plastic |
| Answer» C. non elastic | |
| 42. |
Dalton's law of partial pressure has applications in |
| A. | metabolism |
| B. | excretion |
| C. | respiration |
| D. | circulation |
| Answer» D. circulation | |
| 43. |
Kelvin was the name of a |
| A. | fish |
| B. | river |
| C. | city |
| D. | beach |
| Answer» C. city | |
| 44. |
Experiments with plasma are done in |
| A. | high temperature regions |
| B. | special chambers |
| C. | local laboratories |
| D. | cold laboratories |
| Answer» C. local laboratories | |
| 45. |
When volume becomes zero temperature of gases is |
| A. | 0 kelvin |
| B. | 0 degree centigrade |
| C. | 0 Fahrenheit |
| D. | 1 kelvin |
| Answer» B. 0 degree centigrade | |
| 46. |
Group 0 elements consist of |
| A. | giant metallic structure |
| B. | giant molecules |
| C. | simple molecules |
| D. | individual atoms |
| Answer» E. | |
| 47. |
In gases when molecules are compressed so closely forces which starts operating are |
| A. | attractive |
| B. | repulsive |
| C. | polar |
| D. | bonding |
| Answer» C. polar | |
| 48. |
Plants need Nitrogen (N₂) to aid in the formation of |
| A. | Chlorophylls |
| B. | Nitrogenous acids |
| C. | Protoplast |
| D. | cytoplasm |
| Answer» B. Nitrogenous acids | |
| 49. |
According to Boyle's law pressure and volume are |
| A. | inversely proportional |
| B. | directly proportional |
| C. | proportional |
| D. | not proportional |
| Answer» B. directly proportional | |
| 50. |
Consider the reaction: SiO₂(s) + NaOH(l) → Na₂SiO₃(aq) + H₂O(l). The moles of SiO₂ required to complete the reaction would be |
| A. | 1 |
| B. | 2 |
| C. | 3 |
| D. | 4 |
| Answer» B. 2 | |