MCQOPTIONS
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MCQOPTIONS
This section includes 14620 Mcqs, each offering curated multiple-choice questions to sharpen your NEET knowledge and support exam preparation. Choose a topic below to get started.
| 3001. |
The ultraviolet radiations in the stratosphere are absorbed by [J&K CET 2005] |
| A. | Ozone |
| B. | Oxygen |
| C. | Carbon dioxide |
| D. | Sulphur dioxide |
| Answer» B. Oxygen | |
| 3002. |
Air quality indicator is [Bihar 2005] |
| A. | Lichen |
| B. | Moss |
| C. | Algae |
| D. | None of these |
| Answer» B. Moss | |
| 3003. |
Which one of the following is not used for disinfection of drinking water [CBSE PMT 2005] |
| A. | Chlorine |
| B. | Ozone |
| C. | Chloramine |
| D. | Phenyl |
| Answer» E. | |
| 3004. |
Which component of a living cell is affected by the pollutant SO2 |
| A. | Nucleus |
| B. | Membrane system |
| C. | Cell wall |
| D. | Plasmodesmata |
| Answer» C. Cell wall | |
| 3005. |
Eutrophication can be observed in [CPMT 2005] |
| A. | Saline soil |
| B. | Desert |
| C. | Lake |
| D. | Agricultural fields |
| Answer» D. Agricultural fields | |
| 3006. |
Which of the following strategy is not useful for global warming [AMU 2005] |
| A. | Use of fossil fuel in limit |
| B. | Increase in forest |
| C. | Increasing use of nitrogen fertilizers |
| D. | Use of other options in the place of CFC. |
| Answer» C. Increasing use of nitrogen fertilizers | |
| 3007. |
Examples of regional pollution are [DPMT 2004] |
| A. | Acid rain |
| B. | Smog |
| C. | Both a and b |
| D. | None of these |
| Answer» D. None of these | |
| 3008. |
Eutrophication is caused by [MHCET 2004] |
| A. | Acid rain |
| B. | Nitrates and phosphates |
| C. | Sulphates and carbonates |
| D. | and |
| Answer» C. Sulphates and carbonates | |
| 3009. |
Which of the following metal is a water pollutant and causes sterility in human being [Pb. PMT 2004] |
| A. | As |
| B. | Mn |
| C. | Mg |
| D. | Hg |
| Answer» C. Mg | |
| 3010. |
In the treatment of waste water discharge, which treatment stage involves biological treatment [BHU 2004] |
| A. | Primary treatment |
| B. | Secondary treatment |
| C. | Tertiary treatment |
| D. | Reverse osmosis stage |
| Answer» C. Tertiary treatment | |
| 3011. |
In 1984, the Bhopal gas tragedy took place because methyl isocyanate [CBSE PMT 2004] |
| A. | Reacted with |
| B. | Reacted with water |
| C. | Reacted with DDT |
| D. | Reacted with ammonia |
| Answer» C. Reacted with DDT | |
| 3012. |
Which one of the following gases can deplete ozone layer in the upper atmosphere [BVP 2004] |
| A. | Ammonia |
| B. | Methane |
| C. | Carbon monoxide |
| D. | Sulphur dioxide |
| Answer» C. Carbon monoxide | |
| 3013. |
Minamata disease was caused due to the consumption of [AIIMS 2004] |
| A. | Sea food containing lot of cadmium |
| B. | Fish contaminated with mercury |
| C. | Oysters with lot of pesticide |
| D. | Sea food contaminated with selenium |
| Answer» C. Oysters with lot of pesticide | |
| 3014. |
Nitrogen oxides produced from the emission of automobiles and power plants, are the source of line air borne particles which lead to [AIIMS 2004] |
| A. | Photochemical smog |
| B. | Dry acid deposition |
| C. | Industrial smog |
| D. | Wet acid deposition |
| Answer» B. Dry acid deposition | |
| 3015. |
The noise produced in office is normally at the level of [AIIMS 2004] |
| A. | 20 db. |
| B. | 30 db. |
| C. | 40 db. |
| D. | 60 db. |
| Answer» D. 60 db. | |
| 3016. |
Frequent occurrence of water blooms in a lake indicates [AIEEE 2003] |
| A. | Nutrient deficiency |
| B. | Oxygen deficiency |
| C. | Excessive nutrient availability |
| D. | Absence of herbivores in the lake |
| Answer» C. Excessive nutrient availability | |
| 3017. |
Which of the following would be a natural pollution |
| A. | Forest fires |
| B. | Eutrophication |
| C. | Occurrence of smog |
| D. | Occurrence ofin atmosphere |
| Answer» B. Eutrophication | |
| 3018. |
The pesticide used as preventive measure in buildings is [MP PMT 2003] |
| A. | Aldrin |
| B. | Dieldrin |
| C. | Endrin |
| D. | DDT |
| Answer» B. Dieldrin | |
| 3019. |
Which of the following is not a pollutant [MP PMT 2003] |
| A. | Hydrogen |
| B. | Carbon dioxide |
| C. | Sulphur dioxide |
| D. | Carbon Monooxide |
| Answer» C. Sulphur dioxide | |
| 3020. |
The main cause of water pollution is [MP PMT 2003] |
| A. | Soap |
| B. | Industrial effluents |
| C. | Smoke |
| D. | Ammonia |
| Answer» C. Smoke | |
| 3021. |
Chernobyl tragedy occured in [BHU 2003] |
| A. | 26th May, 1966 |
| B. | 26th April, 1986 |
| C. | 6th Aug., 1947 |
| D. | 9th May, 1945 |
| Answer» C. 6th Aug., 1947 | |
| 3022. |
The soil pollutants that affect the food chain and food web by killing micro organisms and plants are [Kerala CET 2003] |
| A. | Pathogens |
| B. | Chemical fertilisers |
| C. | Agricultural wastes |
| D. | Pesticides |
| Answer» E. | |
| 3023. |
In almost all Indian metropolitan cities like Delhi, the major atmospheric pollutant(s) is/ are [AIIMS 2003; AIEEE 2004] |
| A. | Suspended particulate matter (SPM) |
| B. | Oxides of sulphur |
| C. | Carbon dioxide and carbon monoxide |
| D. | Oxides of nitrogen |
| Answer» B. Oxides of sulphur | |
| 3024. |
Cadmium pollution may cause [HP PMT 2005] |
| A. | Minimata disease |
| B. | Skeletal fluorosis |
| C. | Black foot disease |
| D. | Itai-itai disease |
| Answer» E. | |
| 3025. |
Which of the following does not occur when the sewage is discharged into water [DPMT 2003] |
| A. | Increase in |
| B. | Cyanophycean blooms occur |
| C. | Depletion of layers |
| D. | Eutrophication |
| Answer» B. Cyanophycean blooms occur | |
| 3026. |
CFC are not recommended to be used in refrigerators because they [DPMT 2003; BVP 2004] |
| A. | Increase temperature |
| B. | Deplete ozone |
| C. | Affect environment |
| D. | Affect human body |
| Answer» C. Affect environment | |
| 3027. |
A range of loudness of sound of 70-90 decibles is rated as [AIEEE 2003] |
| A. | Very loud |
| B. | Uncomfortable |
| C. | Painful |
| D. | quiet |
| Answer» B. Uncomfortable | |
| 3028. |
Gases referred to as "green house gases' are [BHU 2003; CPMT 2003] |
| A. | ,,, |
| B. | Chlorofluoro carbon, , , |
| C. | , , , |
| D. | Chlorofluoro carbon, , , |
| Answer» E. | |
| 3029. |
pollution affects which part of the plant [AFMC 2003] |
| A. | Chloroplast |
| B. | Mitochondria |
| C. | E.R. |
| D. | Lysosome |
| Answer» B. Mitochondria | |
| 3030. |
A process that uses micro-organisms to convert harmful industrial wastes to less toxic or non-toxic compounds is [AIEEE 2003] |
| A. | Complement fixation |
| B. | Precipitation |
| C. | Bioremediation |
| D. | Bioconversion |
| Answer» D. Bioconversion | |
| 3031. |
Which are sensitive to pollution [MP PMT 2002; BHU 2003] |
| A. | Mosses |
| B. | Algae |
| C. | Lichen |
| D. | Ferns |
| Answer» D. Ferns | |
| 3032. |
Acid rain is the secondary effect of [MHCET 2002] |
| A. | Water pollution |
| B. | Air pollution |
| C. | Soil pollution |
| D. | Sound pollution |
| Answer» D. Sound pollution | |
| 3033. |
CO is more toxic than \[C{{O}_{2}}\] because [MHCET 2002] |
| A. | It affects the nervous system |
| B. | It damages lungs |
| C. | It reduces the oxygen carrying capacity of hemoglobin |
| D. | It forms acid with water |
| Answer» D. It forms acid with water | |
| 3034. |
Where did the epidemic bone softening disease 'Itai - Itai' occurred first |
| A. | Burma |
| B. | Japan |
| C. | South Korea |
| D. | USA |
| Answer» C. South Korea | |
| 3035. |
Effect of pollution first marked on [CPMT 2002] |
| A. | Micro-organisms |
| B. | Green vegetation of an area |
| C. | Food crop |
| D. | None of these |
| Answer» C. Food crop | |
| 3036. |
Green muffler is used against which type of pollution [AIIMS 2002] |
| A. | Air |
| B. | Water |
| C. | Soil |
| D. | Noise |
| Answer» E. | |
| 3037. |
Which is a degradable pollutant [MP PMT 2001] |
| A. | D.D.T. |
| B. | Aluminium foil |
| C. | Domestic wastes |
| D. | Mercury salts |
| Answer» D. Mercury salts | |
| 3038. |
What is the intensity of sound in normal conversation [CBSE PMT 2001] |
| A. | 10-20 dB |
| B. | 40-60 dB |
| C. | 90-120 dB |
| D. | 120-150 dB |
| Answer» C. 90-120 dB | |
| 3039. |
Increase in the concentration of pollutants in higher trophic levels is called [BHU 2001] |
| A. | Recycling |
| B. | Eutrophication |
| C. | Biodegradation |
| D. | Biomagnification |
| Answer» E. | |
| 3040. |
The result of ozone hole is [KCET 2001] |
| A. | Acid rain |
| B. | UV radiations |
| C. | Global warming |
| D. | Green house effect |
| Answer» C. Global warming | |
| 3041. |
Water pollution can be stopped best by |
| A. | Treating effluents to remove injurious chemicals |
| B. | Rearing more fishes |
| C. | Cultivating useful water plants |
| D. | Spraying with DDT |
| Answer» B. Rearing more fishes | |
| 3042. |
Water pollution is caused by [MP PMT 2000] |
| A. | Ammonia |
| B. | Phytoplankton |
| C. | Industrial effluents |
| D. | Smoke |
| Answer» D. Smoke | |
| 3043. |
Aerosols reduce primary productivity by [CPMT 2000] |
| A. | Destroying leaf tissue |
| B. | Premature leaf fall |
| C. | Reducing crop yields |
| D. | All of these |
| Answer» E. | |
| 3044. |
Water pollution is caused due to [Pb. PMT 1999; BHU 2001] |
| A. | Sewage and other wastes |
| B. | Industrial effluents |
| C. | Agricultural discharges |
| D. | All of these |
| Answer» E. | |
| 3045. |
Which among the following is likely to have the highest levels of D.D.T. depositions in its body [BHU 2000] |
| A. | Eel |
| B. | Crab |
| C. | Sea gull |
| D. | Phytoplankton |
| Answer» D. Phytoplankton | |
| 3046. |
Increasing of temperature due to scattering of energy is determine by ozone, and water vapour, is known as [Pb. PMT 1999; RPMT 1999] |
| A. | Radioactivity |
| B. | Ozone effect |
| C. | Solar reaction |
| D. | Greenhouse effect |
| Answer» E. | |
| 3047. |
Which of the following organism is likely to have more concentration of D.D.T in its body [CBSE PMT 1999] |
| A. | Herbivores |
| B. | Carnivores |
| C. | Top carnivores |
| D. | Primary producers |
| Answer» D. Primary producers | |
| 3048. |
Green house effect refers to [CBSE PMT 1999; CPMT 2004] |
| A. | Cooling of earth |
| B. | Trapping of UV rays |
| C. | Production of cereals |
| D. | Warming of earth |
| Answer» E. | |
| 3049. |
In B.O.D. test, oxygen plays an important role to |
| A. | Destroy inorganic matter |
| B. | Destroy pollution |
| C. | Destroy waste organic matter |
| D. | None of these |
| Answer» D. None of these | |
| 3050. |
In 1984, Bhopal gas tragedy was caused due to leakage of [RPMT 1997; CBSE PMT 1999; BHU 1998, 2000; KCET 2004; MHCET 2004; Haryana PMT 2005] |
| A. | Sodium monoxide |
| B. | Sodium thiocyanate |
| C. | Potassium isocyanate |
| D. | Methyl isocyanate |
| Answer» E. | |