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.
| 451. |
Green house effect is due toA. `CO_(2)`B. `CH_(4),SO_(2)` and `NO_(2)`C. Combination of many gasesD. Gases which absorb infra-red rays reflected from earth. |
| Answer» Correct Answer - D | |
| 452. |
The peak concentration ozone above surface of Earth is at:A. 10 kmB. 15 kmC. 20 kmD. 30 km |
| Answer» Correct Answer - C | |
| 453. |
Green house effect is increasing due toA. Increasing `CO_(2)` concentrationB. increasing `SO_(2)` concentrationC. Increasing concentration of chlorofluorocarbonsD. Hole in ozone layer. |
| Answer» Correct Answer - A | |
| 454. |
A hyper metal accumulator isA. Daucos carotaB. Nicotiana tabacumC. ArabidopsisD. Thlaspi geosingensis |
| Answer» Correct Answer - C | |
| 455. |
The first biocide used on a large scale wasA. Boreaux mixtureB. DDTC. ThuriosideD. Benzene haxachloride. |
| Answer» Correct Answer - B | |
| 456. |
Green house effect is increasing due toA. High concentration of `NO_(2)`B. High concentration of `SO_(2)`C. High concentration of `CO_(2)`D. High concentration of CO |
| Answer» Correct Answer - C | |
| 457. |
Water (Preventation and control of pollution ) Act was enacted duringA. 1952B. 1972C. 1991D. 1994 |
| Answer» Correct Answer - B | |
| 458. |
Criteria for rain water to be called acid rain is for pH:A. 7B. 6.5C. 6D. 5.6 |
| Answer» Correct Answer - D | |
| 459. |
Mark the correct statement (w.r.t. photochemical smog)A. Also called classical smogB. Formed in traffic congested cities where warm condition and intense solar radiation are presentC. Secondary pollutant and has no effect on vegetationsD. Occurs at low temperature and contains `H_(2)S` and `SO_(2)` |
| Answer» Correct Answer - B | |
| 460. |
The pH of the acid rain is approximatelya)5.6b)`2-3`c)`7-9`d)` gt 10`A. 7B. 6.56C. `lt 5.65`D. 11 |
| Answer» Correct Answer - C | |
| 461. |
When was the first nuclear reactor builtA. 1942B. 1944C. 1945D. 1947 |
| Answer» Correct Answer - A | |
| 462. |
The major ozone depleting substance out of the following isA. CFCsB. `O_(2)`C. nitrogenD. all of these. |
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Answer» Correct Answer - A Ozone depleting substances (ODS) are substnces which react with ozone present in the stratosphere and destroy the same. The major ODS are chlorofluorocarbons (14 % of total depletion), nitrogen oxides (3.5 % depletion), sulphur dioxide, halon, carbon tetrachloride, methyl chloroform, chlorine, etc. |
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| 463. |
Greenhouse effect is due toA. accumulation of `O_(3)` and depletion of `CO_(2)`B. accumulation of both `O_(3) " and " CO_(2)`C. accumulation of `CO_(2)` and depletion of `O_(3)`D. presence of green plants on the Earth. |
| Answer» Correct Answer - C | |
| 464. |
Ozone layer of upper atmosphere is being destroyed byA. chlorofluorocarbonsB. `SO_(2)`C. `O_(2) " and " CO_(2)`D. smog. |
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Answer» Correct Answer - A CFCs are widely used as refrigerants. CFCs discharged in the lower part of atmosphere move upward and reach stratosphere. In stratosphere, UV rays act on them releasing Cl atoms. Cl degrades ozone releasing molecular oxygen, with these atoms acting merely as catalysts, Cl atoms are not consumed in the reaction. CFCs added to the stratosphere have permanent and continuing affects on ozone levels. |
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| 465. |
Which of the following are the correct approaches to reduce global warming ? (i) Use of fossil fuels Improving efficiency of energy usage (iii)Afforestation (iv) Increasin growth of human populationA. (i) and (ii)B. (ii) and (iii)C. (iii) and (iv)D. (i), (ii) and (iii) |
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Answer» Correct Answer - B To reduce global warming following measures must be taken : (i) Cutting down the use of fossil fuel (ii) Improving efficiency of energy usage (iii) Reducing deforestation (iv) Planting trees and slowing down the growth of human population. |
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| 466. |
Chlorofluorocarbons are major depletor of ozone layer in stratosphere . They split to release chlorine. One atom of chlorine converts how many molecules of ozone into oxygen ?A. 1 lakhB. 2C. 40D. 1 million |
| Answer» Correct Answer - A | |
| 467. |
e-wastes refer toA. radioactivity wasteB. nuclear wasteC. can be both (1) and (2)D. electronic waste |
| Answer» Correct Answer - D | |
| 468. |
$ Phylloclade is a stem modification. ! There are present flowers on these.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 | |
| 469. |
$ Sieve tubes have "P" proteins. ! In gymnosperms, sieve tubes are associated with albuminous cells.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 | |
| 470. |
$ Xylem is a simple permanent tissue. ! Xylem is present in Bryophytes.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 | |
| 471. |
$ A simple but dominant gametophyte is called Prothallus. ! Prothallus is found in Bryophytes.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 | |
| 472. |
$ Chlamydomonas has many pyrenoids. ! Pyrenoids help in the storage of oil droplets.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 | |
| 473. |
$ Carragenin can coagulate blood. ! Carrangenin is a type of phycocolloid.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 | |
| 474. |
Our forests are on the decline because ofA. soil erosionB. heavy floordsC. no afforestationD. indiscriminate felling of trees and grazing |
| Answer» Correct Answer - D | |
| 475. |
Forests near equator region are called-A. deciduous forestsB. tropical forestsC. coniferous forestsD. grasslands |
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Answer» Correct Answer - B Correct option is (B) tropical forest |
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| 476. |
Which one is not correct for the effects of deforestation ?A. It leads to soild erosionB. It alters the weather pattern by decreasing rainfallC. It speeds up nutrient recyclingD. It destroys natural habitats of wild life |
| Answer» Correct Answer - C | |
| 477. |
Ozone hole is measured inA. DecibelB. Dobson Units (DU)C. Parts Per Million (PPM)D. Cubic Centimeter |
| Answer» Correct Answer - B | |
| 478. |
‘Van Mahotsav’ was started byA. K.M. MunshiB. Sunder La! BahugunaC. Vinoha BhaveD. J.L. Nehru |
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Answer» Correct Answer - A ‘Van Mahotsav’ was started by K.M. Munshi |
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| 479. |
Terracing helps in soil conservation inA. PlainsB. DesertsC. Hilly areasD. Wet areas |
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Answer» Correct Answer - C Terracing helps in soil conservation in hilly areas. |
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| 480. |
Deforestation meansA. Growing plants and trees in an area where there is no forestB. Growing plants and trees in an area where the forest is removedC. Growing plants and trees in a pondD. Removal of plants and trees |
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Answer» Correct Answer - D Deforestation means removal of plants and trees |
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| 481. |
Which is matched for composite wasteA. Waste clothing, waste plastics such as toysB. Waste clothing, rocksC. Toys, green wasteD. Toys, bottles, paper. |
| Answer» Correct Answer - A | |
| 482. |
Deforestation meansA. Growing plants and trees in an area where there is no forestB. Growing plants and trees in an area where the forest is removedC. Growing plants and trees in a pondD. Removal of plants and trees. |
| Answer» Correct Answer - D | |
| 483. |
Black foot disease occurs due to:A. Oil spillsB. ArsenicC. CooperD. Mercury |
| Answer» Correct Answer - B | |
| 484. |
Noise isA. Loud soundB. Unwanted soundC. Constant soundD. Sound of high frequency. |
| Answer» Correct Answer - B | |
| 485. |
Aerosols reduce primary productivity by :A. Decreases `O_(2)` concentrationB. Preventing `N_(2)` fixationC. Reducing photosynthesisD. None of the above. |
| Answer» Correct Answer - C | |
| 486. |
Black foot disease is caused by pollution of ground water as a consequence of increased seepaga ofA. NitratesB. FluoridesC. ArsenicD. Mercury. |
| Answer» Correct Answer - C | |
| 487. |
Polluted water do not containA. Stone fly larvaeB. Sewage fungusC. Water hyacinthD. Cyanobacteria |
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Answer» Correct Answer - A Polluted waters do not contain stone fly larvae. |
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| 488. |
DDT is a /anA. OrganophosphateB. OrganochlorineC. CarbanateD. Triazine |
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Answer» Correct Answer - B DDT is an organochlorine. |
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| 489. |
Fluoride polllution mainly affectsA. BrainB. HertC. TeethD. Kidney. |
| Answer» Correct Answer - C | |
| 490. |
Fluoride polllution mainly affectsA. BrainB. HeartC. TeethD. Kidney |
| Answer» Correct Answer - C | |
| 491. |
What is BOD ?A. The amount of `O_(2)` utilised by organisms in waterB. The amount of `O_(2)` utilised by microorganisms for decompositionC. The total amount of `O_(2)` present in waterD. All of the above |
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Answer» Correct Answer - B Biological Oxygen Demand (BOD) is the amount of `O_(2)` required for biological oxidation of organic matter present in polluted water by microorganisms in any unit volume of water. |
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| 492. |
Which of the following is absent in polluted water ?A. HydrillaB. Water hyacinthC. Larva of stone flyD. Blue-green algae |
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Answer» Correct Answer - C Stone flies are exopterygote insects with aquatic nymphs, long antennae, biting mouth parts and weak flight. Adults have the tendency of feed on lichens and unicellular algae. These are good pollution indicators. |
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| 493. |
Which of the following is absent in polluted water?A. HydrillaB. Water hyacinthC. Larva of stone flyD. Blue green algae |
| Answer» Correct Answer - C | |
| 494. |
Tidal volume in human being isA. 100 mlB. 1500 mlC. 500 mlD. 4.5 liters |
| Answer» Correct Answer - C | |
| 495. |
Mammilian heart isA. NeurogenicB. MyogenicC. DigenicD. None of the above |
| Answer» Correct Answer - B | |
| 496. |
Sour taste is perceived on the tongue atA. TipB. SidesC. Upper suface of front halfD. Back |
| Answer» Correct Answer - B | |
| 497. |
Organs of Ruffini are receptors ofA. ColdB. PressureC. HeatD. Touch |
| Answer» Correct Answer - C | |
| 498. |
Blood isA. AlkalineB. AcidicC. NeutralD. None of the above |
| Answer» Correct Answer - A | |
| 499. |
Function of SA node isA. Muscular painB. Contraction of lungsC. UricotelicD. None of the above |
| Answer» Correct Answer - C | |
| 500. |
Which cells do not divide after birth ?A. Nerve cellsB. Germ cellsC. Muscle cellsD. Osteocytes |
| Answer» Correct Answer - A | |