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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.
| 201. |
The unit used by meterologists is |
| A. | centibar |
| B. | millibar |
| C. | millimetre |
| D. | decibar |
| Answer» C. millimetre | |
| 202. |
English scientist who discovered plasma was |
| A. | William Crookes |
| B. | Wilson |
| C. | Watson |
| D. | Wauker |
| Answer» B. Wilson | |
| 203. |
Clausius was the 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 | |
| 204. |
Joule Thomson effect describes gases' |
| A. | contraction |
| B. | sudden expansion |
| C. | expansion |
| D. | volume increase |
| Answer» C. expansion | |
| 205. |
P' is given by formula |
| A. | a/V square |
| B. | a/V cube |
| C. | a square/V |
| D. | a/P |
| Answer» B. a/V cube | |
| 206. |
Definite velocities are owned by molecules of gases which occur in |
| A. | chains |
| B. | groups |
| C. | independently |
| D. | as entity |
| Answer» C. independently | |
| 207. |
PV/nRT is called as |
| A. | pressure factor |
| B. | compressibility factor |
| C. | surface area |
| D. | volume factor |
| Answer» C. surface area | |
| 208. |
The excluded volume of gas is represented by |
| A. | a |
| B. | c |
| C. | b |
| D. | d |
| Answer» D. d | |
| 209. |
Gases can be compressed because of |
| A. | empty spaces |
| B. | large volume |
| C. | shape |
| D. | molecules |
| Answer» B. large volume | |
| 210. |
Uniform behaviour is shown by gases towards |
| A. | internal conditions |
| B. | atmosphere |
| C. | external conditions |
| D. | sea level |
| Answer» D. sea level | |
| 211. |
The gases which have more tendency to liquefy includes |
| A. | carbon dioxide |
| B. | ammonia |
| C. | hydrogen |
| D. | sulphur |
| Answer» C. hydrogen | |
| 212. |
In Graham's law of diffusion the constants are |
| A. | temperature and pressure |
| B. | volume and pressure |
| C. | density and volume |
| D. | temperature |
| Answer» B. volume and pressure | |
| 213. |
1 atmosphere is equal to |
| A. | 760 mm of Hg |
| B. | 740 mm of Hg |
| C. | 720 mm of Hg |
| D. | 780 mm of Hg |
| Answer» B. 740 mm of Hg | |
| 214. |
The temperature which cannot be attained is |
| A. | absolute 1 |
| B. | absolute4 |
| C. | absolute7 |
| D. | absolute zero |
| Answer» E. | |
| 215. |
Plasma is used to conduct electricity in |
| A. | neon signs |
| B. | ammonia signs |
| C. | sulphur signs |
| D. | hydrogen signs |
| Answer» B. ammonia signs | |
| 216. |
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 | |
| 217. |
Linde's method for liquefaction is based upon |
| A. | Joule Thomson effect |
| B. | hydrogen effect |
| C. | pressure effect |
| D. | volume effect |
| Answer» B. hydrogen effect | |
| 218. |
Plasma can also be used to remove |
| A. | dust |
| B. | hazardous chemicals |
| C. | vapors |
| D. | colors |
| Answer» C. vapors | |
| 219. |
Charle's law defines value of 'k' as |
| A. | V/n |
| B. | V/V |
| C. | V/P |
| D. | V/T |
| Answer» E. | |
| 220. |
760 mmof Hg is taken at an area of |
| A. | 1 cm square |
| B. | 2 cm square |
| C. | 3 cm square |
| D. | 4 cm square |
| Answer» B. 2 cm square | |
| 221. |
The boiling point of water on kelvin scale is |
| A. | 273 |
| B. | 373 |
| C. | 253 |
| D. | 267 |
| Answer» C. 253 | |
| 222. |
The value of compressibility factor for ideal gases is |
| A. | 1 |
| B. | 2 |
| C. | 3 |
| D. | 4 |
| Answer» B. 2 | |
| 223. |
Fluorescent bulbs to produce electricity uses |
| A. | solid state |
| B. | liquids |
| C. | gases |
| D. | plasma |
| Answer» E. | |
| 224. |
Pulsed power switches use |
| A. | plasma |
| B. | solid |
| C. | liquid |
| D. | gas |
| Answer» B. solid | |
| 225. |
In Avogadro's law volume is directly propotional to |
| A. | Pressure |
| B. | (no of moles) |
| C. | Volume |
| D. | Temperature |
| Answer» C. Volume | |
| 226. |
The fahrenheit scale is divided into |
| A. | 180 divisions |
| B. | 120 divisions |
| C. | 60 divisions |
| D. | 70 divisions |
| Answer» B. 120 divisions | |
| 227. |
Any thing can be vaporized when it comes in contact with |
| A. | vacuum |
| B. | ice |
| C. | natural plasma |
| D. | ions |
| Answer» D. ions | |
| 228. |
For Boyle's law if we plot graph between inverse of volume and pressure the result is |
| A. | curve line |
| B. | straight line |
| C. | circular line |
| D. | elliptical |
| Answer» C. circular line | |
| 229. |
In deducing Charle's law from kinetic equation of gases the constant is |
| A. | 9P/6k |
| B. | 6k/9P |
| C. | 3k/2P |
| D. | 2k/3P |
| Answer» E. | |
| 230. |
Metastable molecules have long |
| A. | survival |
| B. | wavelength |
| C. | chains |
| D. | none |
| Answer» B. wavelength | |
| 231. |
Boyle's law is used only for |
| A. | non ideal gases |
| B. | light gases |
| C. | ideal gases |
| D. | heavy gases |
| Answer» D. heavy gases | |
| 232. |
PM/RT is an expression for |
| A. | density |
| B. | pressure |
| C. | volume |
| D. | temperature |
| Answer» B. pressure | |
| 233. |
The minimum temperature at which natural plasma exists is |
| A. | 600000degree Celsius |
| B. | 20000 degree Celsius |
| C. | 700000degree Celsius |
| D. | 900000 degree Celsius |
| Answer» C. 700000degree Celsius | |
| 234. |
Plasma to maintain its electrical properties contains |
| A. | neutral particles |
| B. | electrically charged particles |
| C. | nucleus |
| D. | protons |
| Answer» C. nucleus | |
| 235. |
The size of tube taken in case of experimental description of Graham's law is |
| A. | 300cm |
| B. | 100cm |
| C. | 150cm |
| D. | 200cm |
| Answer» C. 150cm | |
| 236. |
Plasma have the property that they are not degenerated |
| A. | instantly |
| B. | over a period of time |
| C. | in space |
| D. | at storage |
| Answer» B. over a period of time | |
| 237. |
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 | |
| 238. |
The volume of gas is very large in comparison to |
| A. | actual volume of gas molecules |
| B. | pressurized volume of molecules |
| C. | volume taken at high temperature |
| D. | apparent volume of gas |
| Answer» B. pressurized volume of molecules | |
| 239. |
The idea of deviation of gases from ideal behaviour was given by |
| A. | van der Waal |
| B. | Boyle's |
| C. | Charle's |
| D. | Dalton |
| Answer» B. Boyle's | |
| 240. |
Joule Thomson effect was implied by scientist |
| A. | Linde |
| B. | Joule |
| C. | Dalton |
| D. | Boyle's law |
| Answer» B. Joule | |
| 241. |
The constant'b' has units of |
| A. | volume |
| B. | pressure |
| C. | temperature |
| D. | density |
| Answer» B. pressure | |
| 242. |
The state of matter which shows maximum expansion is |
| A. | solids |
| B. | gases |
| C. | liquids |
| D. | plasma |
| Answer» C. liquids | |
| 243. |
The kinetic energy of gases is usually directly changes with |
| A. | pressure |
| B. | temperature |
| C. | volume |
| D. | density |
| Answer» C. volume | |
| 244. |
Liquids have definite |
| A. | Shape |
| B. | volume |
| C. | surfaces |
| D. | forces |
| Answer» C. surfaces | |
| 245. |
In deducing Graham's law of diffusion the constant is |
| A. | under root of 3P |
| B. | under root of 4V |
| C. | under root of 6P |
| D. | under root of 4P |
| Answer» B. under root of 4V | |
| 246. |
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 | |
| 247. |
To prove charle's law temperature is taken in |
| A. | high temperature |
| B. | farenheit scale |
| C. | Kelvin scale |
| D. | centigrade scale |
| Answer» D. centigrade scale | |
| 248. |
Diffusion and effusion is least present in |
| A. | gases |
| B. | liquids |
| C. | solids |
| D. | plasma |
| Answer» C. solids | |
| 249. |
In defining Charle's law volume is directly proportional to |
| A. | temperature |
| B. | pressure |
| C. | moles |
| D. | atoms |
| Answer» B. pressure | |
| 250. |
Mole fraction has unit of |
| A. | gram |
| B. | moles |
| C. | no unit |
| D. | pressure |
| Answer» C. no unit | |