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MCQOPTIONS
This section includes 1049 Mcqs, each offering curated multiple-choice questions to sharpen your General Knowledge knowledge and support exam preparation. Choose a topic below to get started.
| 1001. |
An important reason for the large daily temperature range over deserts is: |
| A. | There is little water vapor in the air to absorb and re-radiate infrared radiation |
| B. | The light-colored sand radiates heat very rapidly at night |
| C. | Dry air is a very poor heat conductor |
| D. | Free convection cells are unable to form above the hot desert ground |
| E. | The ozone content of desert air is very low |
| Answer» B. The light-colored sand radiates heat very rapidly at night | |
| 1002. |
The abiotic and biotic components constitute the structure of an |
| A. | energy flow |
| B. | environment |
| C. | atmosphere |
| D. | Ecosystem |
| Answer» E. | |
| 1003. |
Most of the radiation emitted by a human body is in the form of: |
| A. | Ultraviolet radiation and is invisible |
| B. | Visible radiation but is too weak to be visible |
| C. | Infrared radiation and is invisible |
| D. | Humans do not emit electromagnetic radiation |
| Answer» D. Humans do not emit electromagnetic radiation | |
| 1004. |
At which city might you be able to observe cirrus clouds at an altitude of 3,000 m (10,000 feet) above the surface? |
| A. | Barrow, Alaska |
| B. | Honolulu, Hawaii |
| C. | Miami, Florida |
| D. | Chicago, Illinois |
| Answer» B. Honolulu, Hawaii | |
| 1005. |
The density of water vapor in a given parcel of air is expressed by the: |
| A. | Absolute humidity |
| B. | Relative humidity |
| C. | Mixing ratio |
| D. | Specific humidity |
| E. | Saturation vapor pressure |
| Answer» B. Relative humidity | |
| 1006. |
Water vapor contains a huge amount of stored energy known as |
| A. | Latent heat |
| B. | Solar energy |
| C. | Stored heat |
| D. | Mechanical energy |
| Answer» B. Solar energy | |
| 1007. |
All the statements are correct regarding ecological succession except |
| A. | It is a random process |
| B. | Species diversity increases as succession proceeds |
| C. | The food chain relationships becomes more complex |
| D. | The role of decomposers becomes more and more important |
| Answer» B. Species diversity increases as succession proceeds | |
| 1008. |
Killing of animals disturbs |
| A. | Good for eco system |
| B. | Good for man |
| C. | The balance of nature |
| D. | None |
| Answer» D. None | |
| 1009. |
Atmospheric ozone layer which protect us from UV-B and C is getting depleted most by addition of |
| A. | chloro fluorocarbon |
| B. | carbon monoxide |
| C. | carbon dioxide |
| D. | sulpur dioxide |
| Answer» B. carbon monoxide | |
| 1010. |
In a photochemical smog, which gas is an eye and mucous membrane irritant? |
| A. | SO2 |
| B. | O3 |
| C. | CO2 |
| D. | N2O |
| Answer» C. CO2 | |
| 1011. |
Heavy dust can cause |
| A. | leaf blights |
| B. | opening of stomata |
| C. | closure of stomata |
| D. | browning of leaves |
| Answer» D. browning of leaves | |
| 1012. |
Which one of the following problems is not created by noise pollution? |
| A. | Diarrhoea |
| B. | Hypertension |
| C. | Deafness |
| D. | Irritation |
| Answer» B. Hypertension | |
| 1013. |
If the absolute temperature of an object doubles, the maximum energy emitted goes up by a factor of: |
| A. | 2 |
| B. | 4 |
| C. | 8 |
| D. | 16 |
| E. | 32 |
| Answer» E. 32 | |
| 1014. |
Which of the following is the most responsible for world water crisis? |
| A. | Dams |
| B. | Floods |
| C. | Drought |
| D. | Population growth |
| Answer» D. Population growth | |
| 1015. |
The greatest variation in daily temperature usually occurs: |
| A. | At the ground |
| B. | About 5 feet above the ground |
| C. | At the top of a high-rise apartment complex |
| D. | At the level where thermals stop rising |
| Answer» B. About 5 feet above the ground | |
| 1016. |
Which of the following has a wavelength shorter than that of violet light? |
| A. | Green light |
| B. | Blue light |
| C. | Infrared radiation |
| D. | Red light |
| E. | Ultraviolet radiation |
| Answer» F. | |
| 1017. |
The cause of Bhopal disaster is |
| A. | Methyl Alcohol |
| B. | Methyl Carbonate |
| C. | Methyl Iso Cyanate |
| D. | Methyl Sulphate |
| Answer» D. Methyl Sulphate | |
| 1018. |
The maximum pressure that water vapor molecules would exert if the air were saturated is called the: |
| A. | Absolute humidity |
| B. | Boiling point |
| C. | Mixing ratio |
| D. | None of the above |
| Answer» E. | |
| 1019. |
Fog that forms off the coast of Newfoundland is mainly a form of: |
| A. | Advection fog |
| B. | Frontal fog |
| C. | Steam fog |
| D. | Radiation fog |
| E. | Upslope fog |
| Answer» B. Frontal fog | |
| 1020. |
During an equinox: |
| A. | The days and nights are of equal length except at the poles |
| B. | At noon the sun is overhead at the equator |
| C. | The earth is not tilted toward nor away from the sun |
| D. | All of the above |
| Answer» E. | |
| 1021. |
The earth's radiative equilibrium temperature is: |
| A. | The temperature at which the earth is absorbing solar radiation and emitting infrared radiation at equal rates |
| B. | The temperature at which the earth is radiating energy at maximum intensity |
| C. | The average temperature the earth must maintain to prevent the oceans from freezing solid |
| D. | The temperature at which rates of evaporation and condensation on the earth are in balance |
| Answer» B. The temperature at which the earth is radiating energy at maximum intensity | |
| 1022. |
The gas that absorbs most of the harmful ultraviolet radiation in the stratosphere: |
| A. | Water vapor |
| B. | Nitrous oxide |
| C. | Carbon dioxide |
| D. | Ozone |
| E. | Chlorofluorocarbons |
| Answer» E. Chlorofluorocarbons | |
| 1023. |
Example of primary pollutant |
| A. | SO2 |
| B. | NO2 |
| C. | CO |
| D. | hydrocarbons |
| Answer» E. | |
| 1024. |
Typically, water vapor occupies about what percentage of the air's volume near the earth's surface? |
| A. | About 78 percent |
| B. | About 21 percent |
| C. | Close to 10 percent |
| D. | Less than 4 percent |
| E. | None of these |
| Answer» E. None of these | |
| 1025. |
The source of energy in an ecosystem is |
| A. | ATP |
| B. | Sunlight |
| C. | D.N.A |
| D. | R.N.A |
| Answer» C. D.N.A | |
| 1026. |
How many types of habitats are there in a biosphere? |
| A. | 4 |
| B. | 2 |
| C. | 3 |
| D. | 6 |
| Answer» B. 2 | |
| 1027. |
The word Biophilia was coined by |
| A. | Dr. Hackel |
| B. | Dr.Johanssen |
| C. | Dr. Benjamine |
| D. | E. O. Wilson |
| Answer» E. | |
| 1028. |
The deepest radiation inversion would be observed: |
| A. | At the equator any day of the year |
| B. | In polar regions in winter |
| C. | At the top of a high mountain in winter |
| D. | On a desert in winter |
| E. | In a deep valley during the summer |
| Answer» C. At the top of a high mountain in winter | |
| 1029. |
Electromagnetic radiation with wavelengths between 0.4 and 0.7 micrometers is called: |
| A. | Ultraviolet light |
| B. | Visible light |
| C. | Infrared light |
| D. | Microwaves |
| Answer» C. Infrared light | |
| 1030. |
Which of the following will increase in a rising parcel of air? |
| A. | Saturation vapor pressure |
| B. | Relative humidity |
| C. | Mixing ratio |
| D. | Air temperature |
| E. | None of the above |
| Answer» C. Mixing ratio | |
| 1031. |
One greenhouse gas contributes 14% to total global warming and another contributes 6%. These are respectively identified as |
| A. | N2O and CO2 |
| B. | CFCs and N2O |
| C. | Methane and CO2 |
| D. | Methane and CFCs |
| E. | CFCs and CO2 |
| Answer» C. Methane and CO2 | |
| 1032. |
Which of the following will increase in a rising parcel of air? |
| A. | Saturation vapor pressure |
| B. | Relative humidity |
| C. | Mixing ratio |
| D. | Air temperature |
| E. | None of the above |
| Answer» C. Mixing ratio | |
| 1033. |
Water pollution is due to |
| A. | agricultural discharges |
| B. | Sewage and other wastes |
| C. | industrial effluents |
| D. | all the above |
| Answer» E. | |
| 1034. |
If the air temperature increased, with no addition or removal of water vapor, the actual vapor pressure would: |
| A. | Increase |
| B. | Decrease |
| C. | Stay the same |
| D. | Become greater than the saturation vapor pressure |
| Answer» D. Become greater than the saturation vapor pressure | |
| 1035. |
The main reason(s) for warm summers in northern middle latitudes is that: |
| A. | The earth is closer to the sun in summer |
| B. | The sun is higher in the sky and we receive more direct solar radiation |
| C. | The days are longer |
| D. | All of the above |
| E. | Only (b) and (c) are correct |
| Answer» F. | |
| 1036. |
Meteorology is the study of: |
| A. | Landforms |
| B. | The oceans |
| C. | The atmosphere |
| D. | Outer space |
| E. | Extraterrestrial meteoroids that enter the atmosphere |
| Answer» D. Outer space | |
| 1037. |
The Term Smog was introduced in 1905 by |
| A. | Des Voeux |
| B. | Hult |
| C. | Canon |
| D. | Le Chatelier |
| Answer» B. Hult | |
| 1038. |
Ideal conditions for a strong radiation inversion: |
| A. | Clear, calm, dry, winter night |
| B. | Clear, calm, moist, summer night |
| C. | Cloudy, calm, moist, winter night |
| D. | Cloudy, windy, moist, summer night |
| E. | Clear, windy, dry, summer night |
| Answer» B. Clear, calm, moist, summer night | |
| 1039. |
The final stable community in an ecological succession is called the |
| A. | final community |
| B. | ultimate community |
| C. | climax community |
| D. | seral community |
| Answer» D. seral community | |
| 1040. |
A dim, "watery" sun visible through a gray sheet-like cloud layer is often a good indication of ____ clouds. |
| A. | Stratocumulus |
| B. | Cirrostratus |
| C. | Cumulonimbus |
| D. | Altostratus |
| E. | Nimbostratus |
| Answer» E. Nimbostratus | |
| 1041. |
On the average, about what percentage of the solar energy that strikes the outer atmosphere eventually reaches the earth's surface? |
| A. | 5% |
| B. | 15% |
| C. | 30% |
| D. | 50% |
| E. | 70% |
| Answer» E. 70% | |
| 1042. |
_________ is the most inhuman of social crimes. |
| A. | Rape |
| B. | Kidnap |
| C. | Dowry death |
| D. | Robbery |
| Answer» D. Robbery | |
| 1043. |
The time of day when the relative humidity reaches a maximum value is usually: |
| A. | At the time when the air temperature is highest |
| B. | In the middle of the afternoon |
| C. | At the time when the air temperature is lowest |
| D. | Just before sunrise |
| E. | About midnight |
| Answer» D. Just before sunrise | |
| 1044. |
Water pollution is due to |
| A. | agricultural discharges |
| B. | Sewage and other wastes |
| C. | industrial effluents |
| D. | all the above |
| Answer» E. | |
| 1045. |
Frost forms when: |
| A. | Objects on the ground cool below the dew point temperature. |
| B. | The dew point is 32oF or below. |
| C. | Water vapor changes into ice without first becoming a liquid. |
| D. | All of the above |
| Answer» E. | |
| 1046. |
The most abundant greenhouse gas in the earth's atmosphere: |
| A. | Carbon dioxide (CO2) |
| B. | Nitrous oxide (N2O) |
| C. | Water vapor (H2O) |
| D. | Methane (CH4) |
| E. | Chlorofluorocarbons (CFCs) |
| Answer» D. Methane (CH4) | |
| 1047. |
The gas that shows the most variation from place to place and from time to time in the lower atmosphere: |
| A. | Ozone (O3) |
| B. | Carbon dioxide (CO2) |
| C. | Water vapor (H2O) |
| D. | Methane (CH4) |
| E. | Argon (Ar) |
| Answer» D. Methane (CH4) | |
| 1048. |
Which of the following is not a reason why water warms and cools much more slowly than land? |
| A. | Solar energy penetrates more deeply into water |
| B. | Heat energy is mixed in a deeper layer of water |
| C. | Water has a higher heat capacity |
| D. | A portion of the solar energy that strikes water is used to evaporate it |
| E. | It takes more heat to raise the temperature of a given amount of soil 1o C than it does to raise the temperature of water 1o C. |
| Answer» F. | |
| 1049. |
Which is an example for sedimentary biogeochemical cycle |
| A. | Oxygen cycle |
| B. | Nitrogen cycle |
| C. | Water cycle |
| D. | Phosphorus cycle |
| Answer» E. | |