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.
| 151. |
Radioactive contamination can be controlled by |
| A. | stable particles |
| B. | metastable particles |
| C. | small particles |
| D. | electrons |
| Answer» C. small particles | |
| 152. |
High temperature is favorable for occurrence of |
| A. | plasma |
| B. | solid |
| C. | liquid |
| D. | gas |
| Answer» B. solid | |
| 153. |
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 | |
| 154. |
The state of matter which exists in a narrow temperature range is |
| A. | plasma |
| B. | liquid |
| C. | gas |
| D. | solid |
| Answer» C. gas | |
| 155. |
Plasma can be used in sterilization of |
| A. | households |
| B. | sanitary |
| C. | medical products |
| D. | water |
| Answer» D. water | |
| 156. |
The value of attraction coefficient is constant in case of |
| A. | particular real gas |
| B. | ideal gas |
| C. | mixture of gases |
| D. | none |
| Answer» B. ideal gas | |
| 157. |
Electric current produces plasma and light when passed through |
| A. | neon gas |
| B. | sulphur |
| C. | hydrogen |
| D. | oxygen |
| Answer» B. sulphur | |
| 158. |
The pressure exerted by mixture of gases is equal to sum of pressure of each gas in case of |
| A. | reacting gas |
| B. | nonreacting gas |
| C. | individualized gas |
| D. | inert gases |
| Answer» C. individualized gas | |
| 159. |
Standard temperature is considered to be as |
| A. | 234.17K |
| B. | 244K |
| C. | 279.14K |
| D. | 273.16K |
| Answer» E. | |
| 160. |
Distribution of energies within the gas molecules was studied by |
| A. | Maxwell |
| B. | Boyle |
| C. | Bernoulli |
| D. | boltzman |
| Answer» E. | |
| 161. |
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 | |
| 162. |
Gases when mixed in liquids |
| A. | shifts |
| B. | slows down |
| C. | rise up |
| D. | go down |
| Answer» D. go down | |
| 163. |
The average translational energy is represented by |
| A. | 3R/9N*T |
| B. | 3R/5N*T |
| C. | 3R/2N*T |
| D. | 3R/5N*T |
| Answer» D. 3R/5N*T | |
| 164. |
The lowest temperature for a substance to be in gaseous state is |
| A. | atmosphere |
| B. | 273.16 degree negative |
| C. | 208 K |
| D. | 0 degree centigrade |
| Answer» C. 208 K | |
| 165. |
Aqueous tension is the pressure exerted by |
| A. | molecules of gas |
| B. | water vapors |
| C. | ions |
| D. | atoms |
| Answer» C. ions | |
| 166. |
Color of NO2 gas is |
| A. | black |
| B. | blue |
| C. | brown |
| D. | pink |
| Answer» D. pink | |
| 167. |
Diffusion and effusion is property of |
| A. | Gases |
| B. | liquids |
| C. | solids |
| D. | plasma |
| Answer» B. liquids | |
| 168. |
Molecules of liquids due to their motion possess |
| A. | potential energy |
| B. | kinetic energy |
| C. | heat energy |
| D. | thermal energy |
| Answer» C. heat energy | |
| 169. |
Pressure is exerted by gases due to their |
| A. | circular motion |
| B. | linear motion |
| C. | random motion |
| D. | vibratory otion |
| Answer» D. vibratory otion | |
| 170. |
The plasma which occurs naturally is usually |
| A. | more |
| B. | rare |
| C. | hidden |
| D. | not present |
| Answer» C. hidden | |
| 171. |
k' according to Boyle's law s equal to |
| A. | PT |
| B. | PV |
| C. | P/V |
| D. | P/T |
| Answer» C. P/V | |
| 172. |
the temperature at which molecular movement is ceased is |
| A. | absolute zero |
| B. | absolute 1 |
| C. | absolute3 |
| D. | absolute 5 |
| Answer» B. absolute 1 | |
| 173. |
The fragrance of a flower spreads because of |
| A. | pressure |
| B. | effusion |
| C. | diffusion |
| D. | volume |
| Answer» D. volume | |
| 174. |
The molecules of a gas are close to each other when it is |
| A. | compressed |
| B. | expanded |
| C. | heated |
| D. | pressurized |
| Answer» B. expanded | |
| 175. |
The gas having low value of 'a' is |
| A. | chlorine |
| B. | sulphurdioxide |
| C. | ammonia |
| D. | hydrogen bonding |
| Answer» E. | |
| 176. |
The value of R becomes 62400 if unit of pressure taken is |
| A. | Nm |
| B. | torr |
| C. | joule |
| D. | none |
| Answer» C. joule | |
| 177. |
Experiments with plasma are done in |
| A. | high temperature regions |
| B. | special chambers |
| C. | local laboratories |
| D. | cold laboratories |
| Answer» C. local laboratories | |
| 178. |
The constant used in pressure correction by Van der Waal is |
| A. | d |
| B. | c |
| C. | b |
| D. | a |
| Answer» E. | |
| 179. |
The value of constant 'a' increases with increase in |
| A. | pressure |
| B. | volume |
| C. | intermolecular forces |
| D. | temperature |
| Answer» D. temperature | |
| 180. |
In deducing Boyles law from kinetic equation of gases the constant is |
| A. | 2/3kT |
| B. | 4/3kT |
| C. | 7/3kT |
| D. | 9/3kT |
| Answer» B. 4/3kT | |
| 181. |
Law of distribution of velocities was given by |
| A. | Maxwell |
| B. | Clausius |
| C. | Bernoulii |
| D. | Dalton |
| Answer» B. Clausius | |
| 182. |
When air in Linde's method comes out of jet is |
| A. | expanded |
| B. | cooled |
| C. | heated |
| D. | deatomized |
| Answer» B. cooled | |
| 183. |
The gases are compressed at about 200atm pressure for |
| A. | liquefaction |
| B. | solidification |
| C. | heating |
| D. | gaseous form |
| Answer» B. solidification | |
| 184. |
The motion possessed by solid state is |
| A. | rotatory motion |
| B. | vibratory motion |
| C. | circular motion |
| D. | random motion |
| Answer» C. circular motion | |
| 185. |
The critical temperature of ammonia is |
| A. | 405.6K |
| B. | 605k |
| C. | 404k |
| D. | 890K |
| Answer» B. 605k | |
| 186. |
The simplest state of matter is |
| A. | plasma |
| B. | solid |
| C. | gases |
| D. | liquids |
| Answer» D. liquids | |
| 187. |
The gas which cannot be liquefied by Linde's method is |
| A. | helium |
| B. | Nitrogen gas |
| C. | oxygen |
| D. | carbon dioxide |
| Answer» B. Nitrogen gas | |
| 188. |
Plasma state is more likely to occur at temperature of |
| A. | 25 degree Celsius |
| B. | 2000 degree Celsius |
| C. | 100000 degree Celsius |
| D. | 70 degree Celsius |
| Answer» D. 70 degree Celsius | |
| 189. |
In van der Waal equation n/V represents moles of a gas per |
| A. | cm cube |
| B. | dm cube |
| C. | m cube |
| D. | none |
| Answer» C. m cube | |
| 190. |
In Linde's method the heat of compression is removed in |
| A. | hot pipe |
| B. | water cooled pipe |
| C. | round pipe |
| D. | spiral pipe |
| Answer» C. round pipe | |
| 191. |
Gas molecules do not posses definite |
| A. | atoms |
| B. | molecules |
| C. | volume |
| D. | state |
| Answer» D. state | |
| 192. |
The 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 | |
| 193. |
When the volume becomes zero temperature of gases is |
| A. | 0 kelvin |
| B. | 0 degree centigrade |
| C. | 0 farenheit |
| D. | none |
| Answer» B. 0 degree centigrade | |
| 194. |
Ionization of gas can be used to produce |
| A. | plasma |
| B. | solid |
| C. | liquid |
| D. | gas |
| Answer» B. solid | |
| 195. |
the movement from a very small opening is |
| A. | diffusion |
| B. | effusion |
| C. | expulsion |
| D. | explosion |
| Answer» C. expulsion | |
| 196. |
Plasma is present in about visible universe about |
| A. | 0.8 |
| B. | 0.99 |
| C. | 0.78 |
| D. | 0.6 |
| Answer» C. 0.78 | |
| 197. |
Plasma are used to drive particle accelerators and |
| A. | motors |
| B. | fans |
| C. | lasers |
| D. | cars |
| Answer» D. cars | |
| 198. |
Kinetic molecular theory was given by |
| A. | Dalton |
| B. | Bernoulli |
| C. | Boyle's law |
| D. | Charles |
| Answer» C. Boyle's law | |
| 199. |
Gases have weak intermolecular |
| A. | spaces |
| B. | atoms |
| C. | volume |
| D. | forces |
| Answer» E. | |
| 200. |
The collisions which are produced by gas molecules are |
| A. | easy |
| B. | elastic |
| C. | non elastic |
| D. | plastic |
| Answer» C. non elastic | |