MCQOPTIONS
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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.
| 951. |
The earth is tilted at an angle of 23.5o with respect to the plane of its orbit around the sun. If the amount of tilt were increased to 40o, we would expect in middle latitudes: |
| A. | Hotter summers and colder winters than at present |
| B. | Cooler summers and milder winters than at present |
| C. | Hotter summers and milder winters than at present |
| D. | Cooler summers and colder winters than at present |
| E. | No appreciable change from present conditions |
| Answer» B. Cooler summers and milder winters than at present | |
| 952. |
Organ affected by pneumonia |
| A. | Liver |
| B. | Kidney |
| C. | Heart |
| D. | Lungs |
| Answer» E. | |
| 953. |
Which one of the following environmental pollutants has the problem of biomagnifications? |
| A. | SO2 |
| B. | NO3 |
| C. | Hg fungicides |
| D. | O3 and CO2 |
| Answer» D. O3 and CO2 | |
| 954. |
Atmospheric humidity is measured by |
| A. | Auxanometer |
| B. | Photometer |
| C. | Hygrometer |
| D. | none |
| Answer» D. none | |
| 955. |
Mullaperiyar dam is in the district? |
| A. | Thrissur |
| B. | Pathanamthitta |
| C. | Idukki |
| D. | Alappuzha |
| Answer» D. Alappuzha | |
| 956. |
In meteorology, the word insolation refers to: |
| A. | A well-constructed, energy-efficient home |
| B. | The solar constant |
| C. | Incoming solar radiation |
| D. | An increase in solar output |
| Answer» D. An increase in solar output | |
| 957. |
Disease aggravated by air pollution is |
| A. | cholera |
| B. | rheumatism |
| C. | bronchitis |
| D. | haemophilia |
| Answer» D. haemophilia | |
| 958. |
Major consumer of wood from forest is ___________ |
| A. | Thermal Power Plant |
| B. | Paper Industry |
| C. | Chemistry Industry |
| D. | none |
| Answer» C. Chemistry Industry | |
| 959. |
On a clear, calm, night, the ground and air above cool mainly by this process: |
| A. | Evaporation |
| B. | Reflection |
| C. | Convection |
| D. | Conduction |
| E. | Radiation |
| Answer» F. | |
| 960. |
A narrow valley with steep sides is known as |
| A. | Gorge |
| B. | Canyon |
| C. | Waterfall |
| D. | Landslide |
| Answer» B. Canyon | |
| 961. |
The combined albedo of the earth and the atmosphere is approximately ____ percent. |
| A. | 4 |
| B. | 10 |
| C. | 30 |
| D. | 50 |
| E. | 90 |
| Answer» D. 50 | |
| 962. |
The type of ecosystem with the highest mean plant productivity is |
| A. | tropical rain forest |
| B. | temperate grassland |
| C. | desert |
| D. | tundra |
| Answer» B. temperate grassland | |
| 963. |
The algal booin often releases __________ in water |
| A. | acidic |
| B. | toxins |
| C. | bacteria |
| D. | virus |
| Answer» C. bacteria | |
| 964. |
What is symbiosis? |
| A. | Study of distribution of related species |
| B. | Association between members of same species |
| C. | Association between members of two species |
| D. | None |
| Answer» D. None | |
| 965. |
Which phytoplankton exists at the size of 60 micro metre |
| A. | Nanoplankton |
| B. | Ultraplankton |
| C. | Net plankton |
| D. | Picoplankton |
| Answer» B. Ultraplankton | |
| 966. |
Minamata disease was caused by pollution of water by |
| A. | Mercury |
| B. | Lead |
| C. | Tin |
| D. | Methyl iso cyanate |
| Answer» B. Lead | |
| 967. |
Which one is true? |
| A. | symbiosis when neither population affects each other |
| B. | symbiosis when the interaction is useful to both the populations |
| C. | commensalism when none of the interacting populations affect each other |
| D. | commensalism when the interaction is useful to both the populations |
| Answer» C. commensalism when none of the interacting populations affect each other | |
| 968. |
Cigarette smoking exposes one to __________ |
| A. | Sulphur dioxide |
| B. | Carbon dioxide |
| C. | Nitrogen peroxide |
| D. | Carbon monoxide |
| Answer» E. | |
| 969. |
The earth's first atmosphere was composed primarily of: |
| A. | Carbon dioxide and water vapor |
| B. | Hydrogen and helium |
| C. | Oxygen and water vapor |
| D. | Argon and nitrogen |
| Answer» C. Oxygen and water vapor | |
| 970. |
What is the man-made green house gas known as? |
| A. | Carbon dioxide |
| B. | HFC |
| C. | Ozone |
| D. | Water Vapour |
| Answer» C. Ozone | |
| 971. |
In middle latitudes, which cloud will have the lowest base? |
| A. | Cirrostratus |
| B. | Stratocumulus |
| C. | Altocumulus |
| D. | Cirrus |
| Answer» C. Altocumulus | |
| 972. |
The temperature at which water boils depends mainly on: |
| A. | Air temperature |
| B. | Relative humidity |
| C. | Air pressure |
| D. | Air density |
| E. | The specific heat of air |
| Answer» D. Air density | |
| 973. |
The atmospheric greenhouse effect is produced mainly by the: |
| A. | Absorption and re-emission of visible light by the atmosphere |
| B. | Absorption and re-emission of ultraviolet radiation by the atmosphere |
| C. | Absorption and re-emission of infrared radiation by the atmosphere |
| D. | Absorption and re-emission of visible light by clouds |
| E. | Absorption and re-emission of visible light by the ground |
| Answer» D. Absorption and re-emission of visible light by clouds | |
| 974. |
The strongest radiation inversions occur when |
| A. | Skies are overcast |
| B. | Skies are partly cloudy |
| C. | Skies are clear |
| D. | Precipitation is falling |
| Answer» D. Precipitation is falling | |
| 975. |
The lowest temperature is usually observed: |
| A. | At the time of sunset |
| B. | Near midnight |
| C. | Several hours before sunrise |
| D. | Around sunrise |
| E. | Several hours after sunrise |
| Answer» E. Several hours after sunrise | |
| 976. |
The worst nuclear accident happened to date is occurred at |
| A. | Chernobyl in 1986 |
| B. | Three Mile Power Plant in 1979 |
| C. | Sellafield in 1957 |
| D. | Fukushima in 2011 |
| Answer» B. Three Mile Power Plant in 1979 | |
| 977. |
North American grassland are called |
| A. | Pampas |
| B. | Prairies |
| C. | Savannah |
| D. | None |
| Answer» C. Savannah | |
| 978. |
Drinking of fluoride containing water results : |
| A. | fluorosis |
| B. | chlorosis |
| C. | minemata |
| D. | methaemoglobinema |
| Answer» B. chlorosis | |
| 979. |
The intensity of earthquake is measured in ____________ |
| A. | Beaufort scale |
| B. | Richter scale |
| C. | Mohs scale |
| D. | Joules |
| Answer» C. Mohs scale | |
| 980. |
The electrified region of the upper atmosphere is called the: |
| A. | Thermosphere |
| B. | Mesosphere |
| C. | Stratosphere |
| D. | Ionosphere |
| E. | Troposphere |
| Answer» E. Troposphere | |
| 981. |
Our seasons are caused by: |
| A. | The changing distance between the earth and the sun |
| B. | The angle at which sunlight reaches the earth |
| C. | The length of the daylight hours |
| D. | All of the above |
| E. | Only (b) and (c) are correct |
| Answer» F. | |
| 982. |
Low clouds retard surface cooling at night better than clear skies because: |
| A. | The clouds absorb and radiate infrared energy back to earth |
| B. | The water droplets in the clouds reflect infrared energy back to earth |
| C. | The clouds start convection currents between them |
| D. | The clouds are better conductors of heat than is the clear night air |
| E. | The formation of the clouds releases latent heat energy |
| Answer» B. The water droplets in the clouds reflect infrared energy back to earth | |
| 983. |
The most abundant gas in the stratosphere is: |
| A. | Oxygen (O2) |
| B. | Nitrogen (N2) |
| C. | Carbon dioxide (CO2) |
| D. | Ozone (O3) |
| E. | Chlorofluorocarbons (CFCs) |
| Answer» C. Carbon dioxide (CO2) | |
| 984. |
Heat is energy in the process of being transferred from: |
| A. | Hot objects to cold objects |
| B. | Low pressure to high pressure |
| C. | Cold objects to hot objects |
| D. | High pressure to low pressure |
| E. | Regions of low density toward regions of high density |
| Answer» B. Low pressure to high pressure | |
| 985. |
During the afternoon the greatest temperature difference between the surface air and the air several meters above occurs on a: |
| A. | Clear, calm afternoon |
| B. | Clear, windy afternoon |
| C. | Cloudy, calm afternoon |
| D. | Cloudy, windy afternoon |
| Answer» B. Clear, windy afternoon | |
| 986. |
During the course of a year, the sun will disappear from view near the North Pole on what date? |
| A. | June 21 |
| B. | September 23 |
| C. | December 23 |
| D. | January 1 |
| E. | March 21 |
| Answer» C. December 23 | |
| 987. |
The total number of major languages in India are |
| A. | 18 |
| B. | 17 |
| C. | 16 |
| D. | 15 |
| Answer» D. 15 | |
| 988. |
The formula of growth rate for population in given time is |
| A. | dt/dN=rN |
| B. | dt/rN=dN |
| C. | dt/rN=dt |
| D. | dN/dt=rN |
| E. | dN/rN=dt |
| Answer» E. dN/rN=dt | |
| 989. |
All species on earth together with their environments collectively comprise |
| A. | lithosphere |
| B. | hydrosphere |
| C. | atmosphere |
| D. | biosphere |
| Answer» E. | |
| 990. |
Solar radiation reaches the earth's surface as: |
| A. | Visible radiation only |
| B. | Ultraviolet radiation only |
| C. | Infrared radiation only |
| D. | Visible and infrared radiation only |
| E. | Ultraviolet, visible, and infrared radiation |
| Answer» F. | |
| 991. |
Habitat loss and fragmentation, over exploitation, alien species invasion and co extinction are causes for |
| A. | Population exploitation |
| B. | Pollution |
| C. | Migration |
| D. | Ecological succession |
| E. | Biodiversity loss |
| Answer» F. | |
| 992. |
The pyramid of number of a parasitic food chain in forest ecosystem is |
| A. | always inverted |
| B. | always upright |
| C. | mixture of inverted and upright |
| D. | sometimes inverted and sometimes upright |
| Answer» B. always upright | |
| 993. |
Enrichment of water body by nutrients like phosphorus and nitrogen is called _____________ |
| A. | Succession |
| B. | Eutrophication |
| C. | Stratification |
| D. | Climax Vegetation |
| Answer» C. Stratification | |
| 994. |
Valuable, practical services that help to preserve ecosystem performed by nature are called |
| A. | Ecosystem service |
| B. | Biological control |
| C. | The green house effect |
| D. | Biosphere balancing |
| Answer» B. Biological control | |
| 995. |
A biomass pyramid is important because it illustrates |
| A. | How energy flows through a food web |
| B. | The number of species in each tropic level |
| C. | The biomass of all organisms at each tropic level in a system |
| D. | The number of tropic levels in a system |
| Answer» E. | |
| 996. |
Which of the following green house gases trap more heat? |
| A. | Methane |
| B. | Nitrous oxide |
| C. | Carbon dioxide |
| D. | Trifluoro methyl sulphurpentafluoride |
| Answer» E. | |
| 997. |
_________ element had guided the earlier navigators to keep them on right path. |
| A. | Magnetite |
| B. | Carbon |
| C. | Coal |
| D. | Uranium |
| Answer» B. Carbon | |
| 998. |
This holds a planet's atmosphere close to its surface: |
| A. | Radiation |
| B. | Gravity |
| C. | Cloud cover |
| D. | Moisture |
| E. | Pressure |
| Answer» C. Cloud cover | |
| 999. |
In grazer food chain the living plants are directly |
| A. | destroyed |
| B. | consumed |
| C. | decayed |
| D. | grown |
| Answer» C. decayed | |
| 1000. |
The global temperature has risen by about __________ degree Celsius, since the peak of last glacialisation. |
| A. | 10 |
| B. | 7 |
| C. | 8 |
| D. | 5 |
| Answer» D. 5 | |