MCQOPTIONS
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MCQOPTIONS
This section includes 374 Mcqs, each offering curated multiple-choice questions to sharpen your Engineering Physics knowledge and support exam preparation. Choose a topic below to get started.
| 251. |
The volume of lessened pressure is increased when volume of the vessel used is |
| A. | greater |
| B. | undefined |
| C. | small |
| D. | large |
| Answer» D. large | |
| 252. |
According to equation PV=nRT the pressure of mixture of gases depend upon |
| A. | number of moles of gas |
| B. | collisions of gas |
| C. | units of gas |
| D. | inertness of gas |
| Answer» B. collisions of gas | |
| 253. |
0 degree celsius is equal to |
| A. | 240 K |
| B. | 296k |
| C. | 286K |
| D. | 273K |
| Answer» E. | |
| 254. |
The example of a polar gas is |
| A. | hydrogen |
| B. | Ammonia |
| C. | helium |
| D. | neon |
| Answer» C. helium | |
| 255. |
Electrical energy from fusion pollution control can be created by |
| A. | plasma |
| B. | liquid |
| C. | gases |
| D. | solids |
| Answer» B. liquid | |
| 256. |
The coldest temperature which is ever achieved is |
| A. | 0 kelvin |
| B. | 0 degree |
| C. | 0 farenheit |
| D. | none |
| Answer» B. 0 degree | |
| 257. |
Ar is non polar gas with low |
| A. | polarizability |
| B. | temperature |
| C. | weight |
| D. | volume |
| Answer» B. temperature | |
| 258. |
Tools can be made corrosion resistant by use of |
| A. | water |
| B. | plasma |
| C. | light |
| D. | charcoal |
| Answer» C. light | |
| 259. |
Elements that can be converted into metastable state are |
| A. | oxygen |
| B. | hydrogen |
| C. | uranium only |
| D. | plutonium and uranium |
| Answer» E. | |
| 260. |
The expansion in Linde's method takes place from 200atm to |
| A. | 1atm |
| B. | 5 atm |
| C. | 7 atm |
| D. | 9 atm |
| Answer» B. 5 atm | |
| 261. |
The molecules of gas helium are |
| A. | diatomic |
| B. | triatomic |
| C. | monoatomic |
| D. | tetraatomic |
| Answer» D. tetraatomic | |
| 262. |
The fourth state of matter was identified in |
| A. | 1867 |
| B. | 1879 |
| C. | 1857 |
| D. | 1843 |
| Answer» B. 1879 | |
| 263. |
R is known as |
| A. | molar gas constant |
| B. | volume constant |
| C. | pressure constant |
| D. | temperature constant |
| Answer» B. volume constant | |
| 264. |
General gas constant is represented by |
| A. | B |
| B. | S |
| C. | K |
| D. | R |
| Answer» E. | |
| 265. |
The molecule which is present in interior of gas is attracted by molecules |
| A. | on one side |
| B. | on two sides |
| C. | on all sides |
| D. | on three sides |
| Answer» D. on three sides | |
| 266. |
The compressed air in Linde's method is cooled by |
| A. | vacuum pump |
| B. | cool air |
| C. | ice |
| D. | water |
| Answer» C. ice | |
| 267. |
Pilot feels uncomfortable at high altitudes because of difference in |
| A. | partial pressure of oxygen |
| B. | partial pressure of hydrogen |
| C. | partial pressure of helium |
| D. | none |
| Answer» B. partial pressure of hydrogen | |
| 268. |
The fourth state of matter is called |
| A. | gas |
| B. | solid |
| C. | liquid |
| D. | plasma |
| Answer» E. | |
| 269. |
The word 'iso' means |
| A. | different |
| B. | same |
| C. | conditional |
| D. | constant |
| Answer» C. conditional | |
| 270. |
Plasma is also known as |
| A. | heat |
| B. | energy |
| C. | fourth state of matter |
| D. | fantasy |
| Answer» D. fantasy | |
| 271. |
The expression for pressure of an ideal gas was deduced by |
| A. | Boyle |
| B. | Clausius |
| C. | Dalton |
| D. | Charles |
| Answer» C. Dalton | |
| 272. |
Effusion occurs in region of |
| A. | High pressure |
| B. | low pressure |
| C. | high area |
| D. | high volume |
| Answer» B. low pressure | |
| 273. |
P(i) represents the |
| A. | kinetic pressure |
| B. | potential pressure |
| C. | combined pressure |
| D. | none |
| Answer» B. potential pressure | |
| 274. |
In equation p=xP(total pressure of gas) x is |
| A. | molar mass of gas |
| B. | mole fraction of gas |
| C. | molarity of gas |
| D. | molecularity of gas |
| Answer» B. mole fraction of gas | |
| 275. |
Charle's law was given by |
| A. | Dutch scientist |
| B. | French scientist |
| C. | Polish scientist |
| D. | American scientist |
| Answer» C. Polish scientist | |
| 276. |
The 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. | |
| 277. |
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 | |
| 278. |
Solids are non compressible because they have negligible |
| A. | spaces |
| B. | volume |
| C. | shape |
| D. | energy |
| Answer» B. volume | |
| 279. |
Plasma is present in majority in |
| A. | inter stellar space |
| B. | intermolecular space |
| C. | inter cellular space |
| D. | intra cellular space |
| Answer» B. intermolecular space | |
| 280. |
The gas chlorine has high value of constant |
| A. | b |
| B. | a |
| C. | c |
| D. | d |
| Answer» B. a | |
| 281. |
The unit of pressure pounds per square inch is used in |
| A. | meterologists |
| B. | mathematics |
| C. | sea level |
| D. | engineering |
| Answer» E. | |
| 282. |
The gas molecules have large number of |
| A. | empty spaces |
| B. | surfaces |
| C. | contaminants |
| D. | nuclei |
| Answer» B. surfaces | |
| 283. |
Sun is usually heated by |
| A. | nuclear fusion |
| B. | fission |
| C. | ions |
| D. | atoms |
| Answer» C. ions | |
| 284. |
Graham law was discovered by |
| A. | Peter Graham |
| B. | David graham |
| C. | Thomas Graham |
| D. | Dalton |
| Answer» D. Dalton | |
| 285. |
square root of 3RT/M gives us |
| A. | square root of density |
| B. | Root mean square velocity |
| C. | mean square velocity |
| D. | mean pressure |
| Answer» C. mean square velocity | |
| 286. |
In demonstration of Graham's law fumes are produced at point of |
| A. | junction of gases |
| B. | where pressure is high |
| C. | where area is greater |
| D. | at end of tube |
| Answer» B. where pressure is high | |
| 287. |
The pressure felt by sea diver at every 100 feet is approximately |
| A. | 2 atm |
| B. | 6 atm |
| C. | 3atm |
| D. | 5atm |
| Answer» D. 5atm | |
| 288. |
According to Boyle's law the pressure and volume are |
| A. | inversely propotional |
| B. | directly propotional |
| C. | propotional |
| D. | none |
| Answer» B. directly propotional | |
| 289. |
The reign of Thomas Graham is from |
| A. | 1809 - 1885 |
| B. | 1889 - 1996 |
| C. | 1945 - 1987 |
| D. | 1805 - 1869 |
| Answer» E. | |
| 290. |
The motion of gas molecules is negligible which occurs due to |
| A. | collisions |
| B. | gravity |
| C. | pressure |
| D. | none |
| Answer» C. pressure | |
| 291. |
The gas molecules move haphazardly according to |
| A. | Charle's law |
| B. | Dalton theory |
| C. | Boyle's law |
| D. | Kinetic theory of gases |
| Answer» E. | |
| 292. |
The attractive forces among gas molecules becomes more at |
| A. | high pressure and low temperature |
| B. | high temperature only |
| C. | high pressure only |
| D. | low temperature |
| Answer» B. high temperature only | |
| 293. |
The mixture containing ions ,atoms and electrons is known as |
| A. | solid |
| B. | liquid |
| C. | plasma |
| D. | gas |
| Answer» D. gas | |
| 294. |
The kinetic molecular theory was given in year |
| A. | 1755 |
| B. | 1760 |
| C. | 1750 |
| D. | 1738 |
| Answer» E. | |
| 295. |
Dalton's law of partial pressure has applications in |
| A. | metabolism |
| B. | excretion |
| C. | respiration |
| D. | circulation |
| Answer» D. circulation | |
| 296. |
Magnetic fields creates plasma which is known as |
| A. | stable state |
| B. | shifted state |
| C. | metastable state |
| D. | degenerated state |
| Answer» D. degenerated state | |
| 297. |
Low temperature reduces the |
| A. | kinetic energy |
| B. | potential energy |
| C. | surface free energy |
| D. | none |
| Answer» B. potential energy | |
| 298. |
The volume of the vessel containing gas minus effective volume of gas gives us |
| A. | Free volume |
| B. | compressed volume |
| C. | pressurized volume |
| D. | none |
| Answer» B. compressed volume | |
| 299. |
In experimental demonstration of graham's law the fumes produced are |
| A. | dense white |
| B. | black |
| C. | brown |
| D. | purple |
| Answer» B. black | |
| 300. |
Plasma is an efficient source of |
| A. | cooling |
| B. | radiation |
| C. | energy |
| D. | color |
| Answer» C. energy | |