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.
| 101. |
What does the phrase “anthropogenic CO₂ emissions” mean? |
| A. | Human made CO₂ emissions |
| B. | Industrial CO₂ emissions |
| C. | Natural CO₂ emissions |
| D. | All of the mentioned |
| Answer» B. Industrial CO₂ emissions | |
| 102. |
Which is the most abundant greenhouse gas in the atmosphere? |
| A. | Carbon dioxide |
| B. | Water vapour |
| C. | Methane |
| D. | Nitrogen |
| Answer» C. Methane | |
| 103. |
By how much has atmospheric carbon dioxide concentration increased ever since the Industrial Revolution? |
| A. | 20% |
| B. | 10% |
| C. | 40% |
| D. | 60% |
| Answer» D. 60% | |
| 104. |
How the Nitrogen oxide can be reduced in flue gases? |
| A. | Selective Catalytic reduction |
| B. | Flue Gas desulphurization |
| C. | Catalytic Cells |
| D. | By introducing filters in the chimney's |
| Answer» B. Flue Gas desulphurization | |
| 105. |
In coal fired power plants what is scrubbed out from the flue gases? |
| A. | Lead |
| B. | Mercury |
| C. | Sulphur |
| D. | Manganese |
| Answer» D. Manganese | |
| 106. |
What is the process of Flue gas Desulphurization? |
| A. | It's the conversion of sulphurdioxide to calcium sulphate |
| B. | It's the conversion of limestone to calcium sulphate |
| C. | conversion of Sulphurdioxide into Limestone |
| D. | Conversion of flue gases into limestone |
| Answer» B. It's the conversion of limestone to calcium sulphate | |
| 107. |
FGD stands for |
| A. | Focus group Discussion |
| B. | Flue Gas desulphurization |
| C. | Feature group Discussion |
| D. | Ferro Gas desulphurization |
| Answer» C. Feature group Discussion | |
| 108. |
What does “airborne fraction” with respect to greenhouse gases indicate? |
| A. | Amount of greenhouse gases that are released into air due to industrial process |
| B. | Proportion of greenhouse gases in air to all the other atmospheric gases |
| C. | Proportion of greenhouse gas emission that remain even after a specified time |
| D. | None of the mentioned |
| Answer» D. None of the mentioned | |
| 109. |
Which of the following is the largest sink for carbon dioxide gas? |
| A. | Forests |
| B. | Oceans |
| C. | Ice sheets |
| D. | Grasslands |
| Answer» C. Ice sheets | |
| 110. |
Apart from Earth, which other celestial body(s) exhibits greenhouse gas effect? |
| A. | Venus |
| B. | Mars |
| C. | Titan |
| D. | All of the mentioned |
| Answer» E. | |
| 111. |
Which of the following bodies in the solar system has anti-greenhouse effect? |
| A. | Jupiter |
| B. | Mars |
| C. | Titan |
| D. | Venus |
| Answer» D. Venus | |
| 112. |
Which of the following radiations of the sun do greenhouse gases trap? |
| A. | Visible radiations |
| B. | Infrared radiations |
| C. | UV radiations |
| D. | All the radiations |
| Answer» C. UV radiations | |
| 113. |
What does GWP in the context of greenhouse gases indicate? |
| A. | Global Warming Parameters |
| B. | Gradual Warming Pattern |
| C. | Global Warming Patterns |
| D. | Global Warming Potential |
| Answer» E. | |
| 114. |
Clouds help in cooling down the planet and do not contribute to greenhouse effect. |
| A. | True |
| B. | False |
| C. | May be True or False |
| D. | Can't say |
| Answer» C. May be True or False | |
| 115. |
What is the GWP of methane over a time period of 20 years? |
| A. | 86 |
| B. | 34 |
| C. | 43 |
| D. | 67 |
| Answer» B. 34 | |
| 116. |
The GWP depends on which of the following factors? |
| A. | Absorption capability of IR radiations |
| B. | Atmospheric life-time |
| C. | Range of IR wavelengths it can absorb |
| D. | All of the mentioned |
| Answer» E. | |
| 117. |
Which of the following mentioned GHGs has the highest atmospheric lifetime? |
| A. | Carbon tetrafluoride |
| B. | Nitrous oxide |
| C. | Methane |
| D. | CFC |
| Answer» B. Nitrous oxide | |
| 118. |
Which of the following gases has the highest radiative efficiency? |
| A. | Sulphur hexafluoride |
| B. | Carbon tetrachloride |
| C. | PFTBA |
| D. | CFC |
| Answer» D. CFC | |
| 119. |
Which of the following compounds have the highest GWP? |
| A. | Nitrous oxide |
| B. | CFC |
| C. | Water vapour |
| D. | Sulphur hexafluoride |
| Answer» E. | |
| 120. |
What is the reason for extreme difference in temperatures at day and night in deserts? |
| A. | Carbon dioxide concentrations are low in desert regions, therefore heat escapes easily |
| B. | Sand has high heat conduction properties |
| C. | Lack of moisture leads to escape of heat |
| D. | All of the mentioned |
| Answer» D. All of the mentioned | |
| 121. |
What does the method of “enhanced weathering” infer? |
| A. | It is a method used to spray sulphate aerosols to reduce the greenhouse effect |
| B. | It is a method of cloud seeding that is done to reduce the contribution of clouds to greenhouse effect |
| C. | It is a method used to remove CO₂from the air |
| D. | None of the mentioned |
| Answer» E. | |
| 122. |
Anthropogenic sources of carbon dioxide are 20 times greater than natural carbon dioxide sources. |
| A. | True |
| B. | False |
| C. | May be True or False |
| D. | Can't say |
| Answer» C. May be True or False | |
| 123. |
In the lower layers of atmosphere, what range of wavelengths of light is predominant? |
| A. | Less than 100 nm |
| B. | Greater than 300 nm |
| C. | Between 100-300 nm |
| D. | All wavelengths are equally present |
| Answer» C. Between 100-300 nm | |
| 124. |
At what concentration (in ppm), is nitrogen present in the atmosphere? |
| A. | 780,840 |
| B. | 390,420 |
| C. | 78,084 |
| D. | 900,000 |
| Answer» B. 390,420 | |
| 125. |
What is the region of mild and irregular wind in the equatorial region known as? |
| A. | Trade winds |
| B. | Westerlies |
| C. | Doldrums |
| D. | Easterlies |
| Answer» D. Easterlies | |
| 126. |
“Roaring forties” is the term used to describe which of the following winds? |
| A. | East-to-west air winds in the southern hemisphere |
| B. | West-to east air winds in the northern hemisphere |
| C. | East-to-west air winds in the northern hemisphere |
| D. | West-to-east air winds in the southern hemisphere |
| Answer» E. | |
| 127. |
What does the ratio of the mass of water vapour to mass of air indicate? |
| A. | Absolute humidity |
| B. | Specific humidity |
| C. | Relative humidity |
| D. | Approximate humidity |
| Answer» C. Relative humidity | |
| 128. |
Compressibility factor remains constant at constant |
| A. | pressure |
| B. | temperature |
| C. | volume |
| D. | surface area |
| Answer» C. volume | |
| 129. |
Plasma which is more reactive has |
| A. | high pressure |
| B. | low temperature |
| C. | low surface area |
| D. | low polarizability |
| Answer» C. low surface area | |
| 130. |
The forces of attraction present among gas molecules are |
| A. | excessive |
| B. | negligible |
| C. | highly packed |
| D. | hydrogen bonding |
| Answer» C. highly packed | |
| 131. |
Gases are usually composed of many small particles which are named as |
| A. | atoms |
| B. | molecules |
| C. | groups |
| D. | clusters |
| Answer» C. groups | |
| 132. |
Fluorescent lights and lightning discharges are composed of |
| A. | liquids |
| B. | solids |
| C. | plasma |
| D. | gases |
| Answer» D. gases | |
| 133. |
Kelvin scale starts from |
| A. | 173 |
| B. | 273 |
| C. | 293 |
| D. | 283 |
| Answer» C. 293 | |
| 134. |
Boyle law states that for increase in pressure the volume is |
| A. | increased |
| B. | decreased |
| C. | remains constant |
| D. | none |
| Answer» C. remains constant | |
| 135. |
Joule Thomson effect is based upon |
| A. | sudden compression of gases |
| B. | sudden expansion of gases |
| C. | cooling of gases |
| D. | heating of gases |
| Answer» C. cooling of gases | |
| 136. |
Most of the matter on earth is in |
| A. | solid state |
| B. | liquid state |
| C. | gaseous state |
| D. | plasma state |
| Answer» B. liquid state | |
| 137. |
The gas which is diffused into the blood during diving is |
| A. | hydrogen |
| B. | helium |
| C. | nitrogen |
| D. | oxygen |
| Answer» D. oxygen | |
| 138. |
In defining Charle's law the quantity which remains constant is |
| A. | volume |
| B. | pressure |
| C. | temperature |
| D. | forces |
| Answer» C. temperature | |
| 139. |
Gases occupy the volume of the |
| A. | Solids |
| B. | liquids |
| C. | air |
| D. | container |
| Answer» E. | |
| 140. |
The 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 | |
| 141. |
Definite shape is a chrachterization of |
| A. | solids |
| B. | liquids |
| C. | gases |
| D. | plasma |
| Answer» B. liquids | |
| 142. |
In the method of liquefaction of gases the quantity which falls is |
| A. | surface area |
| B. | density |
| C. | volume |
| D. | temperature |
| Answer» E. | |
| 143. |
116 torr is the partial pressure of oxygen in |
| A. | blood |
| B. | lungs |
| C. | air spaces |
| D. | cells |
| Answer» C. air spaces | |
| 144. |
Van der Waal states that for ideal gas the factors which must be corrected are |
| A. | volume |
| B. | pressure |
| C. | pressure and volume |
| D. | temperature |
| Answer» D. temperature | |
| 145. |
Atoms and molecules are ionized when they get |
| A. | heat |
| B. | cooling |
| C. | space |
| D. | definite volume |
| Answer» B. cooling | |
| 146. |
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 | |
| 147. |
The melting points of states of matter depends upon strength of |
| A. | intermolecular forces |
| B. | volume |
| C. | molecules |
| D. | atoms |
| Answer» B. volume | |
| 148. |
The kinetic energy of gas molecules is given by |
| A. | 1/7mN*mean square velocity |
| B. | 1/9mN*mean square velocity |
| C. | 1/6mN*mean square velocity |
| D. | 1/2mN*mean square velocity |
| Answer» E. | |
| 149. |
The excluded volume of gas depends upon |
| A. | volume |
| B. | size of gas |
| C. | shape of gas |
| D. | hydrogen bonding |
| Answer» C. shape of gas | |
| 150. |
The graph of gases move towards ideal at |
| A. | high temperature |
| B. | high pressure |
| C. | high volume |
| D. | density |
| Answer» B. high pressure | |