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. |
Pressure exerted by gases is result of total number of |
| A. | containers |
| B. | atoms |
| C. | units |
| D. | collisions |
| Answer» E. | |
| 2. |
101325Pa is equal to |
| A. | 790 torr |
| B. | 760torr |
| C. | 750 torr |
| D. | 780 torr |
| Answer» C. 750 torr | |
| 3. |
Ar is non polar gas with low |
| A. | polarizability |
| B. | temperature |
| C. | weight |
| D. | volume |
| Answer» B. temperature | |
| 4. |
Nitrogen makes up 78% of the earth's atmosphere and is |
| A. | metal |
| B. | non-metallic |
| C. | alkaline |
| D. | amphoteric |
| Answer» C. alkaline | |
| 5. |
The molecules of gas are squashed together and they will hit walls more often when there is a decrease in its |
| A. | volume |
| B. | temperature |
| C. | humidity |
| D. | pressure |
| Answer» B. temperature | |
| 6. |
Temperature which cannot be attained is |
| A. | absolute 1 |
| B. | absolute4 |
| C. | absolute7 |
| D. | absolute zero |
| Answer» E. | |
| 7. |
The gas particles are in constant motion was suggested in the |
| A. | kinetic theory of gases |
| B. | Kinetic theory of matter |
| C. | kinetic theory of liquids |
| D. | none of above |
| Answer» B. Kinetic theory of matter | |
| 8. |
Mean square of velocities of molecules of gas is derived according to |
| A. | Boyles law |
| B. | Maxwell law |
| C. | Charles law |
| D. | Daltons law |
| Answer» C. Charles law | |
| 9. |
Atoms and molecules are ionized when they get |
| A. | heat |
| B. | cooling |
| C. | space |
| D. | definite volume |
| Answer» B. cooling | |
| 10. |
Simplest state of matter is |
| A. | plasma |
| B. | solid |
| C. | gases |
| D. | liquids |
| Answer» D. liquids | |
| 11. |
Motion of gas molecules is negligible which occurs due to |
| A. | collisions |
| B. | gravity |
| C. | pressure |
| D. | both b and c |
| Answer» C. pressure | |
| 12. |
The unit of pressure is |
| A. | calories |
| B. | liters |
| C. | cubes |
| D. | Pascal's |
| Answer» E. | |
| 13. |
Plasma can be used to help in food |
| A. | cooking |
| B. | cooling |
| C. | pickling |
| D. | pasteurization |
| Answer» E. | |
| 14. |
The important part of the nitrogen cycle is |
| A. | nitrogen oxide |
| B. | nitric acid |
| C. | ammonia |
| D. | nitrogen |
| Answer» C. ammonia | |
| 15. |
Gases show more ideal behaviour at |
| A. | High pressure |
| B. | low pressure |
| C. | low density |
| D. | low temperature |
| Answer» C. low density | |
| 16. |
Which option is incorrect about a bloom of algae? |
| A. | provides food for aquatic life |
| B. | blocks sunlight for aquatic life |
| C. | utilize oxygen in water leaving lesser oxygen for rest of water life |
| D. | forms a layer over water surface |
| Answer» B. blocks sunlight for aquatic life | |
| 17. |
Low temperature reduces the |
| A. | kinetic energy |
| B. | potential energy |
| C. | surface free energy |
| D. | atomic energy |
| Answer» B. potential energy | |
| 18. |
In case of R dm cube(decimeter)-atm(atmosphere) is unit of |
| A. | heat |
| B. | pressure |
| C. | energy |
| D. | volume |
| Answer» D. volume | |
| 19. |
Constant 'b' has units of |
| A. | volume |
| B. | pressure |
| C. | temperature |
| D. | density |
| Answer» B. pressure | |
| 20. |
Molecules of a gas are close to each other when it is |
| A. | compressed |
| B. | expanded |
| C. | heated |
| D. | pressurized |
| Answer» B. expanded | |
| 21. |
Kinetic molecular theory was given by |
| A. | Dalton |
| B. | Bernoulli |
| C. | Boyle's law |
| D. | Charles |
| Answer» C. Boyle's law | |
| 22. |
Which of these do not react vigorously with Oxygen? |
| A. | Na(s) |
| B. | Mg(s) |
| C. | Al(s) |
| D. | S(s) |
| Answer» D. S(s) | |
| 23. |
At absolute zero volume of gases is increased or decreased by |
| A. | 1/273 |
| B. | 1/275 |
| C. | 1/280 |
| D. | 1/290 |
| Answer» B. 1/275 | |
| 24. |
Elements that can be converted into metastable state are |
| A. | oxygen |
| B. | hydrogen |
| C. | uranium only |
| D. | plutonium and uranium |
| Answer» E. | |
| 25. |
Coldest temperature which is ever achieved is |
| A. | 0 kelvin |
| B. | 0 degree |
| C. | 0 Fahrenheit |
| D. | 0 Celsius |
| Answer» B. 0 degree | |
| 26. |
The main cause of Acid Rain is |
| A. | Nitrogen (IV) oxide |
| B. | Nitrogen (II) oxide |
| C. | NO |
| D. | all of above |
| Answer» E. | |
| 27. |
The volume occupied by 0.5 moles of carbon dioxide at a pressure of 150kPa and the temperature of 19 °C will be |
| A. | 8.09 dm³ |
| B. | 8.89 dm³ |
| C. | 9.09 dm³ |
| D. | 8.13 dm³ |
| Answer» B. 8.89 dm³ | |
| 28. |
The oxidation number of sulfur dioxide is |
| A. | +2 |
| B. | +4 |
| C. | +6 |
| D. | +8 |
| Answer» C. +6 | |
| 29. |
Fahrenheit scale is divided into |
| A. | 180 divisions |
| B. | 120 divisions |
| C. | 60 divisions |
| D. | 70 divisions |
| Answer» B. 120 divisions | |
| 30. |
Sum of partial pressures of dry gas and water vapors is actually pressure of |
| A. | moist gas |
| B. | inert gas |
| C. | solidified gas |
| D. | gas molecules |
| Answer» B. inert gas | |
| 31. |
Slope of a straight line is increased in graph of Charle's law by increasing |
| A. | mass of gas |
| B. | pressure of gas |
| C. | temperature of gas |
| D. | moles of gas |
| Answer» B. pressure of gas | |
| 32. |
Kinetic molecular theory describes behaviour of gases |
| A. | quantitatively |
| B. | qualitatively |
| C. | on basis of nature |
| D. | on base of sizes |
| Answer» B. qualitatively | |
| 33. |
Pulsed power switches use |
| A. | plasma |
| B. | solid |
| C. | liquid |
| D. | gas |
| Answer» B. solid | |
| 34. |
Critical volume for hydrogen is |
| A. | 74.42cm cube |
| B. | 95.65 cm cube |
| C. | 64.51cm cube |
| D. | 89cm cube |
| Answer» D. 89cm cube | |
| 35. |
Fluorescent lights and lightning discharges are composed of |
| A. | liquids |
| B. | solids |
| C. | plasma |
| D. | gases |
| Answer» D. gases | |
| 36. |
Graham law states that rate of effusion is inversely proportional to |
| A. | square root of density |
| B. | square root of temperature |
| C. | square root of pressure |
| D. | square root of area |
| Answer» B. square root of temperature | |
| 37. |
1 mm of Hg is equal to |
| A. | 1 torr |
| B. | 1 pascal |
| C. | 1 newton per metre square |
| D. | 1 kilopascal |
| Answer» B. 1 pascal | |
| 38. |
Standard temperature is considered to be as |
| A. | 234.17K |
| B. | 244K |
| C. | 279.14K |
| D. | 273.16K |
| Answer» E. | |
| 39. |
The force of attraction and repulsion in the gaseous molecule is |
| A. | present |
| B. | absent |
| C. | slight |
| D. | huge |
| Answer» C. slight | |
| 40. |
Excluded volume is greater than actual volume of gases about |
| A. | five times |
| B. | four times |
| C. | six times |
| D. | seven times |
| Answer» C. six times | |
| 41. |
Plasma to maintain its electrical properties contains |
| A. | neutral particles |
| B. | electrically charged particles |
| C. | nucleus |
| D. | protons |
| Answer» C. nucleus | |
| 42. |
Tools can be made corrosion resistant by use of |
| A. | water |
| B. | plasma |
| C. | light |
| D. | charcoal |
| Answer» C. light | |
| 43. |
In Graham's law of diffusion constants are |
| A. | temperature and pressure |
| B. | volume and pressure |
| C. | density and volume |
| D. | temperature and density |
| Answer» B. volume and pressure | |
| 44. |
We feel comfortable in breathing when partial pressure of oxygen is |
| A. | 117 torr |
| B. | 159 torr |
| C. | 179 torr |
| D. | 134 torr |
| Answer» C. 179 torr | |
| 45. |
According to Lord Kelvin the particles in a gas will stop moving and gas will have zero volume at temperature in °C i.e. |
| A. | −273 |
| B. | −723 |
| C. | −732 |
| D. | −700 |
| Answer» B. −723 | |
| 46. |
Motion possessed by solid state is |
| A. | rotatory motion |
| B. | vibratory motion |
| C. | circular motion |
| D. | random motion |
| Answer» C. circular motion | |
| 47. |
Gas which is diffused into blood during diving is |
| A. | hydrogen |
| B. | helium |
| C. | nitrogen |
| D. | oxygen |
| Answer» D. oxygen | |
| 48. |
The mole concept helps us in the calculation of |
| A. | reacting masses |
| B. | volume of gases |
| C. | volumes and concentrations of solutions |
| D. | mass of solution |
| Answer» E. | |
| 49. |
The original name of Lord Kelvin was |
| A. | William Kelvin |
| B. | Thomson Kelvin |
| C. | William Thomson |
| D. | William II Smith |
| Answer» D. William II Smith | |
| 50. |
Gas molecules move haphazardly according to |
| A. | Charle's law |
| B. | Dalton theory |
| C. | Boyle's law |
| D. | Kinetic theory of gases |
| Answer» E. | |