InterviewSolution
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InterviewSolution
This section includes InterviewSolutions, each offering curated multiple-choice questions to sharpen your knowledge and support exam preparation. Choose a topic below to get started.
| 2001. |
Which one of the following gases can deplete ozone layer in the upper atmosphere ?A. MethaneB. AmmoniaC. Carbon monoxideD. Sulphur dioxide |
| Answer» Correct Answer - A | |
| 2002. |
A lake with an inflow of domestic sewage rich in organic waste may result inA. Drying up due to algal bloomB. Increased fish production due to higher nutrient availabilityC. Death of fish due to oxygen depletionD. Increased food web organisation. |
| Answer» Correct Answer - C | |
| 2003. |
Drinking of mineral water with very low levels of pesticides (about 0.02 ppm) for long periods may:A. produce immunity against mosquitoB. cause leukemia (blood cancer) in most peopleC. cause cancer of the intestineD. lead to accumulation of pesticide residues in body fat |
| Answer» Correct Answer - D | |
| 2004. |
Nitrogen oxides produced from the emission of automibiles and power plants are the source of fine air borne particles which lead to:A. Dry acid depositionB. Photochemical smogC. Wet acid depositionD. Industrial smog. |
| Answer» Correct Answer - B | |
| 2005. |
Nitrogen oxides produced from the emission of automobiles and power plants are the source of fine air borne particles which lead toA. photochemical smogB. dry acid depositionC. industrial smogD. wet acid deposition |
| Answer» Correct Answer - A | |
| 2006. |
Blood analysis of a patient reveals an unusually high quantity of carboxyhemoglobin content. Which of the following conclusion is the most likely to be correct? The patient has been inhaling poliuted air containing unusually high content ofA. Carbon monoxideB. Carbon disulfideC. ChloroformD. Carbom dioxide |
| Answer» Correct Answer - A | |
| 2007. |
DDT contant in the water of a lake that supplies drinking water to the nearby villages, is found to be 0.003 ppm. The kingfishers of that area reported to have 2 ppm of DDT. Why has the concentration increased in these birds ? What harm will this cause to the bird population ? Name the phenomenon. |
| Answer» DDT is non-biodegradable pollutant. It gets biomagnified at different trophic levels. From water, it accumulates in phytoplanktons, then to fish and finally to predatory birds (king fishers). Higher conc. Of DDT disturbs calcium metabolism in birds resulting in thinking of egg shells, premature breaking. The phenomenon is called biomagnification. | |
| 2008. |
Explain accelerated eutophicatio. Mention any two consequences of this phenomenon. |
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Answer» Increased concentrations of phosphorus and nitrates from industries and residences etc. in a water body act as nutrients and accelerate the growth of algae that may form a mat on the water surface. This increased productivity is called accelerated entrophication. Consequences. (i) Eutrophication leads to lowering of DO in water body leading to death of aquatic life. (ii) Nitrates from fertilizers and detergents contaminate drinking water leading to decrease in oxygen carrying capacity of haemoglobin in human beings. |
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| 2009. |
A crane had DDT level as 5 ppm in its body. What would happen to the population of such birds? Explain giving reasons. |
| Answer» Increased conc. Of DDT in birds effects calcium metabolism in them. As a result, the egg shells become thin and break before maturity. It will result in decline in bird population. | |
| 2010. |
$ The animals in which body temperature varies according to the surroundings are called poikilothermal animals. ! Human beings have four chambered heart.A. If both As and R are correct and R is correct explanation of AsB. If both As and R are correct but R is not correct explanation of AsC. If As is correct, R is wrongD. If both As and R are wrong. |
| Answer» Correct Answer - B | |
| 2011. |
"Good ozone" is found in theA. StratosphereB. IonosphereC. MeasosphereD. Troposphere |
| Answer» Correct Answer - A | |
| 2012. |
$ The animals which give birth to young ones are called oviparous. ! Earthworms lay eggs and are unisexual.A. If both As and R are correct and R is correct explanation of AsB. If both As and R are correct but R is not correct explanation of AsC. If As is correct, R is wrongD. If both As and R are wrong. |
| Answer» Correct Answer - D | |
| 2013. |
"Good ozone" is found in:A. ionosphereB. mesosphereC. troposphereD. stratosphere |
| Answer» Correct Answer - D | |
| 2014. |
"Good ozone" is found in theA. MesophereB. TrophosphereC. StratophereD. lonosphere |
| Answer» Correct Answer - C | |
| 2015. |
Black lung disease is common in:A. FarmersB. workers of petrochemical industryC. coal minersD. Refinery workers. |
| Answer» Correct Answer - C | |
| 2016. |
Match and find the correct combination A. a-iv,b-iii,c-I,d-iiB. a-I,b-ii,c-iii,d-ivC. a-ii,b-iii,c-iv,d-iD. a-iv,b-iii,c-ii, d-i |
| Answer» Correct Answer - D | |
| 2017. |
The domestic sewage in large citiesA. Has a high BOD as it contains both aerobic and anaerobic bacteriaB. Is processed by aerobic and then anaerobic bacteria in the secondary treatment in Sewage Treatment Plants (STPs)C. When treated in STPs does not really require the aeration step as the sewage contains adequate oxygenD. Has very low amounts of suspended solids and dissolved salts |
| Answer» Correct Answer - B | |
| 2018. |
The domestic sewage in large citiesA. Has a high BOD as it contains both aerobic and anaerobic bacteriaB. Is processed by aerobic and then anaerobic bacteria in the secondary treatment in Sewage Treatment Plants (STPs)C. When treated in STPs does not really require the aeration step as the sewage contains adequate oxygenD. Has very high amounts of suspended solids and dissolved salts |
| Answer» Correct Answer - B | |
| 2019. |
Acid rain (a) Causes necrosis (b) Convert chlorophyll-a into pheophytin (c) Responsible for the formation of PANA. Only (a) and (b) are correctB. Only (b) and (c) are correctC. Only (a) is correctD. Only (c) is correct |
| Answer» Correct Answer - A | |
| 2020. |
Which of the following is a reddish-brown pollutant gas? |
| Answer» Correct Answer - C | |
| 2021. |
Acid rain (a) Causes necrosis (b) Convert chlorophyll-a into pheophytin (c) Responsible for the formation of PANA. Only (a) and (b) are correctB. Only (b) and ( c) are correctC. Only (a) is correctD. Only (c) is correct |
| Answer» Correct Answer - A | |
| 2022. |
Integrated organic farming as zero-waste, cyclical procedure is related toA. Ahmed KhanB. Ramesh Chandra DagarC. Amrita DeviD. C.P. Bhatt |
| Answer» Correct Answer - B | |
| 2023. |
The town people of Arcata, created an integrated waste water treatment process, within a natural system, by collaborating with biologists fromA. Leeds University, U.K.B. Humboldt State University, CaliforniaC. Indiana University, BloomingtonD. University of Minnesota, USA |
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Answer» Correct Answer - B The town people of Arcata, created an integrated waste water treatment process, within a natural system, by collaborating with biologists from Humboldt State University, California. |
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| 2024. |
Reserve osmosis is done in treatment `"……………."` stage of waste water.A. primaryB. secondaryC. tertiaryD. `NO_(2)` |
| Answer» Correct Answer - C | |
| 2025. |
Assertion: After the first stage of integrated waste water treatment, lots of dangerous pollutants like dissolved heavy metals still remain. Reason: To combat this, a conventional approach was taken.A. If both assertion and reason are true and the reason is the correct explanation of the assertionB. If both assertion and reason are true but reason is not the correct explanation of the assertionC. If assertion is true but reason is falseD. If both assertion and reason are false. |
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Answer» Correct Answer - C After the first stage of integrated waste water treatment, lots of dangerous pollutants like dissolved heavy metals still remain. To combat this, an innovative approach was taken. |
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| 2026. |
Sudden rattling of doors and windwos is due toA. EarthquakeB. sonic boomC. movements of crustal layers of earthD. sliping of glaciers on the nearby mountain |
| Answer» Correct Answer - B | |
| 2027. |
A supersonic jet produces sonic boom in aA. Cone-like area behind the jetB. 10-100 km areaC. both A and BD. Area of 10 km all around it. |
| Answer» Correct Answer - C | |
| 2028. |
Anatomical barrier to disease isA. SkinB. Mucouse membraneC. Mucus and ciliaD. All the above |
| Answer» Correct Answer - D | |
| 2029. |
Number of lymphocytes present in a healthy human isA. 1 trillionB. 100 billionC. 10 trillionD. 100 trillion |
| Answer» Correct Answer - A | |
| 2030. |
In female genital tract, sperm capacitation is brought about byA. Hyaluronic acidB. Removal of membrane fatty acidsC. ProstaglandinsD. Oxytocin |
| Answer» Correct Answer - B | |
| 2031. |
Photochemical smog is caused by a light mediated reaction between :A. `NO_(2)` and unsaturated hydrocarbonsB. `NO_(2)` and `O_(3)`C. `SO_(2)` and unburnt hydrocarbonsD. `SO_(2) " and " O_(3)` |
| Answer» Correct Answer - A | |
| 2032. |
Acoustic zoning is related withA. Soil pollutionB. Noise pollutionC. Water pollutionD. Air pollution |
| Answer» Correct Answer - B | |
| 2033. |
Stirred-tank bioreactors have been designed forA. availability of oxygen throughout the processB. addition of preservatives to the productC. purification of the productD. ensuring anaerobic conditions in the culture vessel |
| Answer» Correct Answer - A | |
| 2034. |
Select the correct statement from the followingA. Activated sludge-sediment in settlement tanks of sewage treatment plant is a rich source of aerobic bacteria.B. Biogas is produced by the activity of aerobic bacteria on animal wasteC. Methanobacterium is an aerobic bacterium found in rumen of cattleD. Biogas, commonly called gobar gas, is pure methane |
| Answer» Correct Answer - A | |
| 2035. |
Silicosis occurs toA. Acir rainB. ozone depletionC. Inhalation of aerosolsD. Inhalation of `SO_(2)` |
| Answer» Correct Answer - C | |
| 2036. |
Mass emission norms are related toA. COB. hydrocarbonsC. `NO_(x)`D. All of these |
| Answer» Correct Answer - D | |
| 2037. |
$ ATP is a type of coenzyme. ! Adenine is a type of pyrimidine.A. If both As and R are correct and R is correct explanation of AsB. If both As and R are correct but R is not correct explanation of AsC. If As is correct, R is wrongD. If both As and R are wrong. |
| Answer» Correct Answer - C | |
| 2038. |
$ Respiration releases energy in the form of ATP ! Respiration in the presence of `O_(2)` is called Aerobic respiration.A. If both As and R are correct and R is correct explanation of AsB. If both As and R are correct but R is not correct explanation of AsC. If As is correct, R is wrongD. If both As and R are wrong. |
| Answer» Correct Answer - A | |
| 2039. |
$ Process of conversion of ADP into ATP is called phosporylation. ! Glycolysis is also called EMP.A. If both As and R are correct and R is correct explanation of AsB. If both As and R are correct but R is not correct explanation of AsC. If As is correct, R is wrongD. If both As and R are wrong. |
| Answer» Correct Answer - A | |
| 2040. |
$ Respiration is an endogenous reaction. ! Anaeroboic respiration releases more energy than aerobic respiration.A. If both As and R are correct and R is correct explanation of AsB. If both As and R are correct but R is not correct explanation of AsC. If As is correct, R is wrongD. If both As and R are wrong. |
| Answer» Correct Answer - D | |
| 2041. |
$ DNA helix to 20Å wide. One complete turn of DNA is 34Å long.A. If both As and R are correct and R is correct explanation of AsB. If both As and R are correct but R is not correct explanation of AsC. If As is correct, R is wrongD. If both As and R are wrong. |
| Answer» Correct Answer - A | |
| 2042. |
$ Minerals from 25 to 30% of the cell contents. ! Lipids form 40 to 50% of the cell contents.A. If both As and R are correct and R is correct explanation of AsB. If both As and R are correct but R is not correct explanation of AsC. If As is correct, R is wrongD. If both As and R are wrong. |
| Answer» Correct Answer - D | |
| 2043. |
$ The chief respiratory substrate of a cell is carbohydrate ! Fermentaiton is also called Glycolytic pathway.A. If both As and R are correct and R is correct explanation of AsB. If both As and R are correct but R is not correct explanation of AsC. If As is correct, R is wrongD. If both As and R are wrong. |
| Answer» Correct Answer - A | |
| 2044. |
$ Proteins, polysaccharides and nucleic acid are the macromolecules of a cell. ! DNA contains Ribose Sugar.A. If both As and R are correct and R is correct explanation of AsB. If both As and R are correct but R is not correct explanation of AsC. If As is correct, R is wrongD. If both As and R are wrong. |
| Answer» Correct Answer - C | |
| 2045. |
$ Agar-agar is a carbohydrate obtained from some sea weeds. ! Agar agar is a polysaccharides formed of many galactose monomers.A. If both As and R are correct and R is correct explanation of AsB. If both As and R are correct but R is not correct explanation of AsC. If As is correct, R is wrongD. If both As and R are wrong. |
| Answer» Correct Answer - A | |
| 2046. |
$ In conjugated proteins, the protein molecule is joined to a non proteins group called prosthetic group. ! Nucleproteins are a type of conjugated proteins.A. If both As and R are correct and R is correct explanation of AsB. If both As and R are correct but R is not correct explanation of AsC. If As is correct, R is wrongD. If both As and R are wrong. |
| Answer» Correct Answer - A | |
| 2047. |
Slash and burn agriculture is known asA. striping farmingB. intercrop farmingC. jhum cultivationD. None of these |
| Answer» Correct Answer - C | |
| 2048. |
It is a common practice to plant trees and shrubs near the boundary walls of buildings. What purpose do they serve? |
| Answer» A common practice to grow and maintain trees and shrub near the boundary wall of residential, offcial building acts as a barrier for sound and check noise pollution , This green belt of tree and shrub also acts as an effective measure to check primary air pollutants like dust, flyash etc. | |
| 2049. |
How can slash and burn agriculture become environment friendly? |
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Answer» Slash and burn agriculture can be environment friendly if (i) small widely scattered plots are used for cultivation as the forest ecosystem will not suffer damage. (ii) crop rotation is used so that soil does not loose fertillity entirely. (iii) keeping cropping period small and fallow (unplanted) period longer. |
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| 2050. |
What percentage of forest for hills has been recommended by National Forest Policy (1988) of India?A. 0.33B. 0.67C. `19.4%`D. 0.23 |
| Answer» Correct Answer - B | |