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.
| 901. |
Mulching helps in |
| A. | soil fertility |
| B. | moisture conservation |
| C. | improvements soil structure |
| D. | soil sterility |
| Answer» C. improvements soil structure | |
| 902. |
In ecological succession from pioneer to climax community, the biomass shall |
| A. | decrease |
| B. | no relation |
| C. | increase and then decrease |
| D. | increase continuously |
| Answer» E. | |
| 903. |
The outermost zone of a biosphere reserve is |
| A. | manipulation zone |
| B. | core zone |
| C. | buffer zone |
| D. | all the above |
| Answer» B. core zone | |
| 904. |
_________ is the 12th Mega Biodiverse Country in the world. |
| A. | India |
| B. | America |
| C. | China |
| D. | Sri Lanka |
| Answer» B. America | |
| 905. |
What is desertification? |
| A. | Conversion of forests into desert |
| B. | Conversion of croplands into desert |
| C. | Conversion of grassland into desert |
| D. | all of the above |
| Answer» E. | |
| 906. |
The temperature to which air must be cooled in order to become saturated is the: |
| A. | Minimum temperature |
| B. | Dew point temperature |
| C. | Wet-bulb temperature |
| D. | Freezing point |
| Answer» C. Wet-bulb temperature | |
| 907. |
Oil, coal and natural gas supply approximately __________ % of the energy used in the United States |
| A. | 10 |
| B. | 25 |
| C. | 40 |
| D. | 90 |
| Answer» E. | |
| 908. |
Carbon sequestration is a strategy used to control |
| A. | pollution |
| B. | population explosion |
| C. | desertification |
| D. | global warming |
| Answer» E. | |
| 909. |
The first protected area in India is ____________ |
| A. | Silent valley |
| B. | Corbett National Park |
| C. | Bandipur sanctuary |
| D. | Nagar-Hole |
| Answer» C. Bandipur sanctuary | |
| 910. |
Where are the days and nights of equal length all year long? |
| A. | At 66.5o |
| B. | Nowhere |
| C. | At 23.5o |
| D. | At the Equator |
| Answer» E. | |
| 911. |
Sea water is |
| A. | acidic |
| B. | alkaline |
| C. | neutral |
| D. | hypotonic |
| Answer» B. alkaline | |
| 912. |
What is "temporary threshold shift"? |
| A. | Hearing loss due to excessive noise |
| B. | Noise that is untolerable |
| C. | Tolerable noise |
| D. | inaudible noise |
| Answer» B. Noise that is untolerable | |
| 913. |
A population is a group of |
| A. | individuals in a species |
| B. | species in a community |
| C. | communities in an ecosystem |
| D. | individuals in a family |
| Answer» B. species in a community | |
| 914. |
Of the gases listed below, which is NOT believed to be responsible for enhancing the earth's greenhouse effect? |
| A. | Chlorofluorocarbons (CFCs) |
| B. | Molecular oxygen (O2) |
| C. | Nitrous oxide (N2O) |
| D. | Carbon dioxide (CO2) |
| E. | Methane (CH4) |
| Answer» C. Nitrous oxide (N2O) | |
| 915. |
Which gas is likely to be reduced in the atmosphere by deforestation? |
| A. | Carbon dioxide |
| B. | Nitrogen |
| C. | Oxygen |
| D. | Sulphur dioxide |
| Answer» D. Sulphur dioxide | |
| 916. |
Which of the following is not a green house gas? |
| A. | Carbon dioxide |
| B. | Methane |
| C. | Ozone |
| D. | SF6 |
| Answer» D. SF6 | |
| 917. |
Which association below is not correct? |
| A. | Cumulus congestus - anvil top |
| B. | Cumulus - fair weather cumulus |
| C. | Altocumulus castellanus - resemble "little castles" |
| D. | Stratus fractus - scud |
| E. | Cumulonimbus - thunderstorm clouds |
| Answer» B. Cumulus - fair weather cumulus | |
| 918. |
In a temperature inversion: |
| A. | Air temperature increases with increasing height |
| B. | Air temperature decreases with increasing height |
| C. | Air temperature remains constant with increasing height |
| D. | It is warmer at night than during the day |
| Answer» B. Air temperature decreases with increasing height | |
| 919. |
The blueness of the sky is mainly due to: |
| A. | The scattering of sunlight by air molecules |
| B. | The presence of water vapor |
| C. | Absorption of blue light by the air |
| D. | Emission of blue light by the atmosphere |
| Answer» B. The presence of water vapor | |
| 920. |
The darkening of the skin due to arsenic poisoning is called |
| A. | Black syndrome |
| B. | Diffuse melanosis |
| C. | Skin scaling |
| D. | None of these |
| Answer» C. Skin scaling | |
| 921. |
Species that occur in different geographical regions separated by special barrier are: |
| A. | Allopatric |
| B. | Sympatric |
| C. | Sibling |
| D. | None of the above |
| Answer» B. Sympatric | |
| 922. |
Energy of motion is also known as: |
| A. | Dynamic energy |
| B. | Kinetic energy |
| C. | Sensible heat energy |
| D. | Static energy |
| E. | Latent heat energy |
| Answer» C. Sensible heat energy | |
| 923. |
African grasslands are called |
| A. | Prairies |
| B. | Pampas |
| C. | Savannah |
| D. | None |
| Answer» D. None | |
| 924. |
How do red and blue light differ? |
| A. | Blue light has a higher speed of propagation. |
| B. | The wavelength of red light is longer. |
| C. | Red light has a higher intensity. |
| D. | Red and blue light have different directions of polarization. |
| Answer» C. Red light has a higher intensity. | |
| 925. |
The range of normal human hearing is in the range of |
| A. | 10 Hz to 80 Hz |
| B. | 50 Hz to 80 Hz |
| C. | 50Hz to 15000 Hz |
| D. | 15000 Hz and above |
| Answer» D. 15000 Hz and above | |
| 926. |
World Forest day is celebrated on |
| A. | 21st March |
| B. | 5th June |
| C. | 1st Dec |
| D. | 7th June |
| Answer» B. 5th June | |
| 927. |
Major consumer of wood from forest is ___________ |
| A. | Thermal Power Plant |
| B. | Paper Industry |
| C. | Chemistry Industry |
| D. | none |
| Answer» C. Chemistry Industry | |
| 928. |
When both partners are affected negatively the nature of interaction is |
| A. | commensalism |
| B. | competition |
| C. | predation |
| D. | amensalism |
| Answer» C. predation | |
| 929. |
The species of plants that play a vital role in controlling the relative abundance of other species in a community are called |
| A. | Edge species |
| B. | Link species |
| C. | Pioneer species |
| D. | Successional species |
| E. | Keystone species |
| Answer» F. | |
| 930. |
Vermi-composting is a natural method of |
| A. | Producing compost manure |
| B. | Producing worms |
| C. | Managing waste it creates |
| D. | Destroying worms |
| Answer» B. Producing worms | |
| 931. |
Name the disease caused by mercury poisoning in Japan |
| A. | Itai itai |
| B. | Xeroderma pigmentosum |
| C. | Measles |
| D. | Minamata disease |
| Answer» E. | |
| 932. |
A pond, serves as a good example for a __________ water ecosystem. |
| A. | fresh |
| B. | brackish |
| C. | marine |
| D. | sea |
| Answer» B. brackish | |
| 933. |
Ozonosphere seen in |
| A. | ionosphere |
| B. | thermosphere |
| C. | mesophere |
| D. | stratosphere |
| Answer» E. | |
| 934. |
The amount of solar radiation reaching the surface of the earth is called |
| A. | Solar flux |
| B. | reflected light |
| C. | minerals |
| D. | solvents |
| Answer» B. reflected light | |
| 935. |
A human population is small, there is a greater chance of : |
| A. | gene flow |
| B. | genetic drift |
| C. | natural selection |
| D. | mutation |
| Answer» C. natural selection | |
| 936. |
Non-lonizing radiations with specific biological effects are |
| A. | Gamma rays |
| B. | Beta-rays |
| C. | UV radiations |
| D. | X-rays |
| Answer» D. X-rays | |
| 937. |
Which chemical was responsible for Bhopal gas tragedy? |
| A. | Methyl iso Cyanate |
| B. | Benzene Hexa Chloride |
| C. | Tri Nitro Toluene |
| D. | B & C |
| Answer» B. Benzene Hexa Chloride | |
| 938. |
How much radiant energy will an object emit if its temperature is at absolute zero? |
| A. | The maximum theoretical amount |
| B. | None |
| C. | The same as it would at any other temperature |
| D. | Depends on the chemical composition of the object |
| Answer» C. The same as it would at any other temperature | |
| 939. |
The top layer of the lake is called as |
| A. | Thermocline |
| B. | Epilimnion |
| C. | Thermonion |
| D. | Hypolimnion |
| Answer» C. Thermonion | |
| 940. |
When water changes from a liquid to a vapor, we call this process: |
| A. | Freezing |
| B. | Condensation |
| C. | Sublimation |
| D. | Deposition |
| E. | Evaporation |
| Answer» F. | |
| 941. |
The primary cause of a radiation inversion is: |
| A. | Infrared radiation emitted by the earth's surface |
| B. | Infrared radiation absorbed by the earth's surface |
| C. | Solar radiation absorbed by the earth's surface |
| D. | Solar radiation reflected by the earth's surface |
| E. | Infrared radiation absorbed by the atmosphere and clouds |
| Answer» B. Infrared radiation absorbed by the earth's surface | |
| 942. |
Lead in water can cause |
| A. | eye disease |
| B. | arthritis |
| C. | kidney damage |
| D. | hair falling |
| Answer» D. hair falling | |
| 943. |
Which of the following regarding ecological pyramids is not correct? |
| A. | In most ecosystems, the pyramid of numbers and biomass are up right |
| B. | In tree dominated ecosystem the pyramid of numbers is inverted |
| C. | The pyramid of energy expresses mainly the rate of food production |
| D. | In deep water ecosystem, the pyramid of biomass is upright |
| E. | The total energy flow at successive tropical level always decreases |
| Answer» B. In tree dominated ecosystem the pyramid of numbers is inverted | |
| 944. |
If a glass of water were surrounded by saturated air: |
| A. | The level of the water in the glass would slowly decrease |
| B. | The water's temperature would slowly increase |
| C. | The level of the water in the glass would not change |
| D. | The water's temperature would slowly decrease |
| Answer» D. The water's temperature would slowly decrease | |
| 945. |
The amount of force exerted over an area of surface is called: |
| A. | Density |
| B. | Weight |
| C. | Temperature |
| D. | Pressure |
| Answer» E. | |
| 946. |
Green Land biome |
| A. | Tundra |
| B. | Pampas |
| C. | Taiga |
| D. | Thaar |
| Answer» C. Taiga | |
| 947. |
Abyssal zone in ocean has |
| A. | no sunlight but contains decomposers and consumers |
| B. | no sunlight but contain producers |
| C. | sunlight and decomposers |
| D. | sunlight and producers |
| Answer» B. no sunlight but contain producers | |
| 948. |
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 | |
| 949. |
How do red and blue light differ? |
| A. | Blue light has a higher speed of propagation. |
| B. | The wavelength of red light is longer. |
| C. | Red light has a higher intensity. |
| D. | Red and blue light have different directions of polarization. |
| Answer» C. Red light has a higher intensity. | |
| 950. |
Pangolins feed on |
| A. | ants |
| B. | fruits |
| C. | leaves |
| D. | roots |
| Answer» B. fruits | |