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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.
| 851. |
Suppose it is a winter night and at about 11 p.m., the air cools to the dew-point temperature and a thick radiation fog develops. If the air continues to cool during the night, in 5 hours the dew point temperature will probably: |
| A. | Decrease as the air becomes drier |
| B. | Decrease as the air becomes moister |
| C. | Increase as the air becomes drier |
| D. | Increase as the air becomes moister |
| Answer» B. Decrease as the air becomes moister | |
| 852. |
The aurora is produced by: |
| A. | Reflections of sunlight by polar ice fields |
| B. | Fast-moving charged particles colliding with air molecules |
| C. | Burning oxygen caused by the intense sunlight at high altitude |
| D. | The combination of molecular and atomic oxygen to form ozone |
| E. | Scattering of sunlight in the upper atmosphere |
| Answer» C. Burning oxygen caused by the intense sunlight at high altitude | |
| 853. |
Which plants die after flowering? |
| A. | Lotus |
| B. | Bamboo |
| C. | Chrysanthemum |
| D. | Butea |
| Answer» C. Chrysanthemum | |
| 854. |
A great deal of indoor air pollution comes from |
| A. | sludge |
| B. | carbon monoxide |
| C. | cooking |
| D. | carpets and furniture |
| Answer» E. | |
| 855. |
The lowest temperature that can be attained by evaporating water into the air is known as the: |
| A. | Heat index |
| B. | Minimum temperature |
| C. | Wet-bulb temperature |
| D. | Frost point |
| E. | Wind chill temperature |
| Answer» D. Frost point | |
| 856. |
Of all of the energy production in the United States, what percentage is lost in distribution and inefficient use? |
| A. | 10 |
| B. | 25 |
| C. | 40 |
| D. | 50 |
| Answer» D. 50 | |
| 857. |
Wild life is continuously decreasing. What is the main reason of this? |
| A. | Predation |
| B. | Cutting down of forest |
| C. | Destruction of habitat |
| D. | Hunting |
| Answer» D. Hunting | |
| 858. |
Centre of Modern nuclear technology in India |
| A. | CRAS |
| B. | SARC |
| C. | BARC |
| D. | None of these |
| Answer» D. None of these | |
| 859. |
During the winter solstice in the Northern Hemisphere: |
| A. | Astronomical winter begins in the Northern Hemisphere |
| B. | The noon sun is overhead at 23.5o S latitude |
| C. | At middle latitudes in the Northern Hemisphere, this marks the longest night of the year |
| D. | All of the above |
| Answer» E. | |
| 860. |
Name the endangered animal which is protected in Rajamalai National Park |
| A. | Chital |
| B. | Black buck |
| C. | Nilgiri Tahr |
| D. | None |
| Answer» D. None | |
| 861. |
In an average year, more people die from this than from any other natural disaster. |
| A. | Lightning |
| B. | Earthquakes |
| C. | Tornadoes |
| D. | Flash floods and flooding |
| E. | Droughts |
| Answer» E. Droughts | |
| 862. |
Rising air cools by this process: |
| A. | Expansion |
| B. | Evaporation |
| C. | Compression |
| D. | Condensation |
| Answer» B. Evaporation | |
| 863. |
The thickness of ozone layer is measured in |
| A. | Mm |
| B. | Du |
| C. | Nm |
| D. | Hg |
| Answer» C. Nm | |
| 864. |
In a volume of air near the earth's surface, ____ occupies 78 percent and ____ nearly 21 percent. |
| A. | Nitrogen, oxygen |
| B. | Hydrogen, oxygen |
| C. | Oxygen, hydrogen |
| D. | Nitrogen, water vapor |
| E. | Hydrogen, helium |
| Answer» B. Hydrogen, oxygen | |
| 865. |
The gas responsible for the greenhouse effect on Venus is: |
| A. | Carbon dioxide (CO2) |
| B. | Oxygen (O2) |
| C. | Ozone (O3) |
| D. | Nitrogen (N2) |
| E. | Water vapor (H2O) |
| Answer» B. Oxygen (O2) | |
| 866. |
The wind direction is: |
| A. | The direction from which the wind is blowing |
| B. | The direction to which the wind is blowing |
| C. | Always directly from high toward low pressure |
| D. | Always directly from low toward high pressure |
| Answer» B. The direction to which the wind is blowing | |
| 867. |
A term biotype means |
| A. | all individuals having same phenotype |
| B. | all individuals having same genotype |
| C. | all individual with different phenotype |
| D. | all individuals with different genotype |
| Answer» B. all individuals having same genotype | |
| 868. |
The atmosphere near the earth's surface is "heated from below." Which of the following does not significantly contribute to this heating? |
| A. | Conduction of heat upward from a hot surface |
| B. | Convection from a hot surface |
| C. | Absorption of infrared energy that has been radiated from the surface |
| D. | Heat energy from the earth's interior |
| Answer» E. | |
| 869. |
A change of one degree on the Celsius scale is ____ a change of one degree on the Fahrenheit scale. |
| A. | Equal to |
| B. | Larger than |
| C. | Smaller than |
| D. | Is in the opposite direction of |
| Answer» C. Smaller than | |
| 870. |
The crucial species that determine the ability of large number of other species is termed as _________ species. |
| A. | Important |
| B. | Crucial |
| C. | Significant |
| D. | Keystone |
| Answer» E. | |
| 871. |
World Ozone day is |
| A. | March 16 |
| B. | June 5 |
| C. | September 16 |
| D. | November 16 |
| Answer» D. November 16 | |
| 872. |
A Hawk that eats a frog is a |
| A. | Producer |
| B. | Primary Consumer |
| C. | Secondary Consumer |
| D. | Tertiary Consumer |
| Answer» E. | |
| 873. |
At which temperature would the earth be radiating energy at the greatest rate or intensity? |
| A. | -5o F |
| B. | -40o F |
| C. | 60o F |
| D. | 32o F |
| E. | 105o F |
| Answer» F. | |
| 874. |
The Indian Parliament passed the Biodiversity Bill in the year_________ |
| A. | 2000 |
| B. | 2005 |
| C. | 2002 |
| D. | 2007 |
| Answer» D. 2007 | |
| 875. |
Which of the following weather elements always decreases as we climb upward in the atmosphere? |
| A. | Wind |
| B. | Temperature |
| C. | Pressure |
| D. | Moisture |
| E. | All of the above |
| Answer» D. Moisture | |
| 876. |
The historical monument that is affected by acid rain is |
| A. | Taj Mahal |
| B. | Pyramid of Egypt |
| C. | Pisa Tower |
| D. | Golden Temple |
| Answer» B. Pyramid of Egypt | |
| 877. |
Plants that grows in saline water lodged habitat are called |
| A. | xerophytes |
| B. | halophytes |
| C. | mangroves |
| D. | mesophytes |
| Answer» D. mesophytes | |
| 878. |
The Chipko movement is started by |
| A. | Engler |
| B. | Sunderlal Bahuguna |
| C. | Medha Padkar |
| D. | None of these |
| Answer» C. Medha Padkar | |
| 879. |
What is lentic habitat ? |
| A. | Running water habitat |
| B. | Standing or still water habitat |
| C. | Marine habitat |
| D. | None |
| Answer» C. Marine habitat | |
| 880. |
Plants adapted to open, sunny habitats are |
| A. | Sciophytes |
| B. | Heliophytes |
| C. | Mesophytes |
| D. | Epiphytes |
| Answer» C. Mesophytes | |
| 881. |
The lag in daily temperature refers to the time lag between the: |
| A. | Time of maximum solar radiation and the time of maximum temperature |
| B. | Time of minimum temperature and the time of maximum solar radiation |
| C. | Minimum and maximum temperature for a day |
| D. | Minimum and maximum solar energy received at the surface for a given day |
| E. | Sunrise and sunset |
| Answer» B. Time of minimum temperature and the time of maximum solar radiation | |
| 882. |
Which of the following is least likely to contain an oil trap? |
| A. | an anticline |
| B. | fault |
| C. | natural stratigraphy |
| D. | syncline |
| Answer» E. | |
| 883. |
The most harmful of ultraviolet radiations are |
| A. | UV-C, |
| B. | UV-B, |
| C. | UV-A, |
| D. | All the above. |
| Answer» B. UV-B, | |
| 884. |
Complex interlinked food chains are called |
| A. | Food Web |
| B. | Food net work |
| C. | Trophiclevels |
| D. | Food pyramid |
| Answer» B. Food net work | |
| 885. |
Suppose last night was clear and calm. Tonight low clouds will be present. From this you would conclude that tonight's minimum temperature will be: |
| A. | Higher than last night's minimum temperature |
| B. | Lower than last night's minimum temperature |
| C. | The same as last night's minimum temperature |
| D. | Above freezing |
| Answer» B. Lower than last night's minimum temperature | |
| 886. |
The atmospheric layer in which we live is called the: |
| A. | Troposphere |
| B. | Stratosphere |
| C. | Thermosphere |
| D. | Ionosphere |
| E. | Exosphere |
| Answer» B. Stratosphere | |
| 887. |
The area to which a species is biologically adapted to live is known as ________ |
| A. | Niche |
| B. | Habitat |
| C. | Succession |
| D. | Community |
| Answer» C. Succession | |
| 888. |
Charged particles from the sun that travel through space at high speeds are called: |
| A. | Radiation |
| B. | The aurora |
| C. | Solar wind |
| D. | Solar flares |
| Answer» D. Solar flares | |
| 889. |
"A good absorber of a given wavelength of radiation is also a good emitter of that wavelength." This is a statement of: |
| A. | Stefan-Boltzmann's law |
| B. | Wien's Law |
| C. | Kirchoff's Law |
| D. | The First Law of Thermodynamics |
| E. | The Law of Relativity |
| Answer» D. The First Law of Thermodynamics | |
| 890. |
Which of the following statement is incorrect regarding ecological pyramids |
| A. | The pyramid of energy is inverted in ocean ecosystem |
| B. | The pyramid of biomass is inverted in aquatic ecosystem |
| C. | The pyramid of numbers is upright in grass land ecosystem |
| D. | The pyramid of biomass is upright in grass land ecosystem |
| Answer» B. The pyramid of biomass is inverted in aquatic ecosystem | |
| 891. |
In the food relationship where the lion eats the wilde beest, and the wilde beast eats plants |
| A. | The lion is the prey and the wilde beast is the predator |
| B. | The lion is the predator and the wilde beast is the prey |
| C. | The lion is the primary consumer and the wilde beast is the secondary consumer |
| D. | The lion is the secondary consumer and the wilde beast is the primary consumer |
| Answer» E. | |
| 892. |
Sedimentation is a |
| A. | Primary water treatment |
| B. | Secondary water treatment |
| C. | Tertiary water treatment |
| D. | Final process |
| Answer» B. Secondary water treatment | |
| 893. |
The wind-chill factor: |
| A. | Relates body heat loss with wind to an equivalent temperature with no wind |
| B. | Indicates the temperature at which water freezes on exposed skin |
| C. | Takes into account humidity and air temperature in expressing the current air temperature |
| D. | Tells farmers when to protect crops from a freeze |
| E. | Determines how low the air temperature will be on any given day |
| Answer» B. Indicates the temperature at which water freezes on exposed skin | |
| 894. |
Sunlight passes through a thicker portion of the atmosphere at |
| A. | Sunrise |
| B. | Noon |
| C. | Sunset |
| D. | Night |
| E. | Both a and c |
| Answer» F. | |
| 895. |
Incineration of Municipal waste involves |
| A. | Oxidation |
| B. | Deduction |
| C. | Redox action |
| D. | Disintegration |
| Answer» B. Deduction | |
| 896. |
Suppose saturated polar air has an air temperature and dew point of -10o C, and unsaturated desert air has an air temperature of 35o C and a dew point of 10o C. The desert air contains ______ water vapor and has a ________ relative humidity than the polar air. |
| A. | More, lower |
| B. | More, higher |
| C. | Less, lower |
| D. | Less, higher |
| Answer» B. More, higher | |
| 897. |
Which of the following is correctly matched? |
| A. | Butterfly - Camouflage |
| B. | Garden lizard -Mimicry |
| C. | House lizard -Autotomy |
| D. | None of these |
| Answer» D. None of these | |
| 898. |
_________ is essentially stored solar energy that can be converted in to electricity, fuel and heat. |
| A. | Biomass |
| B. | Fossil |
| C. | Heat |
| D. | Coal |
| Answer» B. Fossil | |
| 899. |
Bell-shaped polygonal pyramid indicates |
| A. | low percentage of young individuals |
| B. | moderate percentage of young individuals |
| C. | high percentage of young individuals |
| D. | low percentage of old individuals |
| Answer» C. high percentage of young individuals | |
| 900. |
Freshwater protozoans react to a/an __________ environment by removing water through |
| A. | hypotonic, turgor pressure |
| B. | isotonic, a contractile vacuole |
| C. | hypertonic, a contractile vacuole |
| D. | hypotonic, a contractile vacuole |
| Answer» E. | |