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.
| 1301. |
Green muffler scheme helps to reduceA. air pollutionB. noise pollutionC. e-wastesD. Both (a) and (b) |
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Answer» Correct Answer - D Green muffer or green belt vegetation is rows of trees and shrubs grown and maintained to serve as noise absorbers. It also reduces air pollution because the trees and shrubs absorb pollution gases and cause settling of suspended particulate matter. Green muffler or green belt vegetation is specially planted along roads and rails for absorption of noise, pollutant gases and dust generted by moving vehicles. |
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| 1302. |
Which of the following actions can be taken to control noise pollution ?A. Delimitation of horn-free zone around hospitals and schoolsB. Permissible sound-levels of crackers and of loudspeakersC. Set the timing after which loudspeakers cannot be playedD. All of these |
| Answer» Correct Answer - D | |
| 1303. |
Noise causeA. headache by constricting blood vessels of the brainB. eye strain by constricting the pupilC. digestive spasms through anxietyD. high blood pressure by decreasing cholesterol level in the blood. |
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Answer» Correct Answer - C Noise causes headache by dilating blood vessels of the brain, eye strain by diloating the pupil, digestive spasms through anxiety and high blood pressure by increasing choleterol level in the blood. |
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| 1304. |
Noise pollution may cause nervousness and irritability by stimulating the secretion ofA. thyroid hormoneB. adernaline hormoneC. parathyroid hormoneD. none of these. |
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Answer» Correct Answer - B Noise pollution causes anxiety, stress and irritability. Adernaline hormone is released when body is under stress. So, noise pollution leads to secretion of adernaline hormone, which provides the added energy to the body to deal the stressful situation. |
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| 1305. |
$ Soil soluiton is absorbed by all the parts of a root . ! Soil solution is always of a high concentration.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 | |
| 1306. |
$ In the cell wall of Dinoflagellates, there is present only one groove. ! Diatoms have two flagella.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 | |
| 1307. |
$ `X X^(C)` represents the genotype of a human femanle which acts as carrier of genes for colour blindness. ! Any change in the structure of a chromosomes leads to mutations.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 | |
| 1308. |
$ Those plants which produce seeds, without the formation of fruits are called Gymnosperms. ! Endosperm is triploid in AngiosphermsA. 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 | |
| 1309. |
$ In case of human beings, the process of focusing of an object by the eyes is called dioptric part. ! Diatoms are a type of Nektons.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 | |
| 1310. |
$ Those two pairs of genes which if present in dominant stage, do not produce any expression but when present collectively in dominant stage, produce a phenotypic expression are called complementory genes. ! Inheritance of purple flower colour in Pea gives a phenotypic ratio of 9:7, as a result of selfing of F-1 -offsprings.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 | |
| 1311. |
Give the till effect of benzpyrene. Mention its sources also. |
| Answer» Benzopyrene causes cancer. Its sources are tobacco smoke, coal and oil combustion, road and roof tar. | |
| 1312. |
What are quantitative pollutants? |
| Answer» The quantitative pollutants are materials that are normally present in the environment but are also added in large amount by man, e.g., `CO_(2)`. | |
| 1313. |
Name three nondegradable pollutants. |
| Answer» Glass and tin containers, plastics and radioactive materials. | |
| 1314. |
Which is the major air pollutant? Give its source. |
| Answer» Major air pollutant is CO, that accounts for over 50% of the total air pollutants. It is produced by incomplete combustion of fuel. | |
| 1315. |
What are biodegradable pollutants? Give one example. |
| Answer» That are quickly degraded by natural means, e.g., sewage. | |
| 1316. |
Name a few pollutants added to air by nature. |
| Answer» Gases and ashes from volcanic erruptions : gases from forest fires and decomposition , dust from storms, pollen, spores, cysts, bacteria from living organisms. | |
| 1317. |
Give the source of pathgens into water. |
| Answer» Correct Answer - Domestic sewage | |
| 1318. |
Does nature produce pollutants? Cite two examples. |
| Answer» Yes, volcanic emission, natural decay. | |
| 1319. |
Can useful materials cause pollution? Cite one example. |
| Answer» Correct Answer - Yes, fertilizers. | |
| 1320. |
Which is a greater air pollutant, man or nature? |
| Answer» Correct Answer - Nature. | |
| 1321. |
What is nuclear fallout? |
| Answer» Setting on land of radioactive materials released into air by atomic explosions. | |
| 1322. |
How do radiations affect the cells? |
| Answer» Nonionising radiations breack up the macromolecules. | |
| 1323. |
It is estimated that out of the total global warming the relative contribution of `CO_(2)`, `CH_(4)` CFCs and `N_(2)O` are found respectively as:A. 20%,14%,60%,6%B. 14%,6%,20%,60%C. 60%,20%,14%,6%D. 6%,14%,20%,60% |
| Answer» Correct Answer - C | |
| 1324. |
Mention the kids of pollutants regarding the form in which they persist after environment. |
| Answer» Primary and secondary | |
| 1325. |
Name the types of pollutants according to their natural disposal. |
| Answer» Biodegradable and nondegradable. | |
| 1326. |
How does nature depollutes the air? |
| Answer» Strong winds disperse the pollutants, reducing their concentration and diluting their effect, Precipitation (rain, snow) rids the air of pollutants. | |
| 1327. |
Gaseous pollutants can be controlled by:A. AdsorptionB. ESPC. ArrestorsD. Purolysis |
| Answer» Correct Answer - A | |
| 1328. |
Name the 5 main types of pollutants. |
| Answer» Hydrospheric, atmospheric, lithospheric, radioactive and noise. | |
| 1329. |
Particulate and gaseous pollutants along with harmless gases are released from the thermal power plants. (i) Name any two harmless gases released. (ii) Name the most widely used device of removing particulate pollutants from the airk. Explain how the device is used. |
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Answer» (i) The harmlesss gases released from thermal power plants are nitrogen and oxygen. (ii) Electrostatic precipitators. |
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| 1330. |
List the gaseous pollutants of atmosphere. |
| Answer» Oxides of carbon `(CO, CO_(2)), " nitrogen (NO, NO_(2)), " sulphur (SO_(2), SO_(3))`, hydrocarbons, photochemical oxidants, and fluorides. | |
| 1331. |
Name 3 types of particulate pollutants of air. |
| Answer» Settleable, suspended and nonsettleable particles. | |
| 1332. |
All the 3 kinds of water are polluted. Name them. |
| Answer» Surface water, underground water, and sea water | |
| 1333. |
Thermal pollution, is more prevalent nearA. Hot water springsB. Coal based power plantsC. Temperate zonesD. Tropical zones |
| Answer» Correct Answer - B | |
| 1334. |
What are index species? |
| Answer» The species that inhabit polluted water in highest concentration. | |
| 1335. |
What is thermal pollution? |
| Answer» Rise in temperature of air and water to a harmful level due to heat from power plants, automobiles and industries. | |
| 1336. |
Highly polluted waters haveA. high Algai waters haveB. low Algal Genus indexC. no algae at allD. a feq algal genera and a few bacteria |
| Answer» Correct Answer - B | |
| 1337. |
What is minimata disease? |
| Answer» Disease characterised by diarrhoea, haemolysis, impairing of senses, meningitis and death. | |
| 1338. |
Which greenhouse gas contributes 20% of global warmingA. MethaneB. CFCsC. `CO_(2)`D. `N_(2)O` |
| Answer» Correct Answer - A | |
| 1339. |
Water hyacinth grow abundantly inA. Eutrophic water bodiesB. Mesotrophic water bodiesC. Oligotrophic water bodiesD. All of the above |
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Answer» Correct Answer - A Water hyacinth grow abundantly in eutrophic water bodies. |
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| 1340. |
Assertion: Water hyacinth caused havoc in India. Reason: Water hyacinth causing blocks in our waterways by their excessive growth.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 - A Eichhornia caused havoc by their excessive growth by causing blocks in our water ways. |
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| 1341. |
Assertion: Terror of Bengal leads to an imbalance in the ecosystem dynamics of the water body. Reason: Water hyacinth grow faster than our ability to remove them.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 - B Terror of Bengal leads to an imbalance in the ecosystem dynamics of the water body Water hyacinth grow faster than our ability to remove them. |
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| 1342. |
During inflammation, which of the following is secreted by connective tissue?A. HeparinB. HistamineC. SerotoninD. Glucagon |
| Answer» Correct Answer - B | |
| 1343. |
Hydathodes occur onA. StemB. LeavesC. Root tip cultureD. All the above |
| Answer» Correct Answer - B | |
| 1344. |
The substrate for photorespiration isA. Malic acidB. Oxaloacetic acidC. Glycolic acidD. PGA |
| Answer» Correct Answer - C | |
| 1345. |
Plastocyanin containA. MoB. FeC. CuD. Zn |
| Answer» Correct Answer - C | |
| 1346. |
The greenhouse effect is a naturally occurring phenomenon that is responsible for heating of earth’s surface and atmosphere. Without greenhouse effect the average temperature at surface of earth would have beenA. `-15^@C`B. `15^@C`C. `-18^@C`D. `18^@D` |
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Answer» Correct Answer - C The greenhouse effect is a naturally occurring phenomenon that is responsible for heating of earth’s surf ace and atmosphere. Without greenhouse effect the average temperature at surface of earth would have been `-18^@C`. |
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| 1347. |
Assertion: Deforestation auses loss of biodiversity. Reason: Defoestationlead to habitat destructionA. 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 - A Deforestation causes loss of biodiversity as Deforestation leads to habitat destruction. |
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| 1348. |
The term succession was coined byA. Buffon (1742)B. king (1685)C. Halt (1885)D. cowles (1899) |
| Answer» Correct Answer - C | |
| 1349. |
Assertion : Reforesation may occur naturally in deforested area. Reason: This is secondary succession.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 - B Reforestation may occur naturally in deforsted area. This is secondary succession. |
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| 1350. |
Culmination of a succession at a stage other than the natural climax is calledA. deflected sereB. disclimaxC. plagioclimaxD. Both B and C |
| Answer» Correct Answer - D | |