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.
| 601. |
Wood requirement for Indian industries isA. 10 million `m^(3)`B. 20 million `m^(3)`C. 30 million `m^(3)`D. 40 million `m^(3)` |
| Answer» Correct Answer - D | |
| 602. |
A movement similar to Chipko which has spread in South isA. UlisoB. AppikoC. BelesuD. Balasu. |
| Answer» Correct Answer - B | |
| 603. |
Chipko movement originated in Gopeshwar inA. 1953B. 1963C. 1973D. 1983 |
| Answer» Correct Answer - C | |
| 604. |
Chipko movement originated in :A. AllahabadB. ChamoliC. HardwarD. Dehradun . |
| Answer» Correct Answer - B | |
| 605. |
(A) : A habitat is the actual location in the environmental where an organism lives. (R) : A species cannot survive without its natural habitat.A. If both (A) and (R) are true but (R) is not the correct explanation of (A).B. If both (A) and (R) are true and (R) is the correct explanation of (A).C. If (A) is true but (R) is false.D. If both (A) and (R) are false. |
| Answer» Correct Answer - B | |
| 606. |
Which one is homogenetics ?A. Human childB. Human embryoC. Human maleD. Human female |
| Answer» Correct Answer - B | |
| 607. |
Adapater molecule isA. mRNAB. rRNAC. DNAD. tRNA |
| Answer» Correct Answer - D | |
| 608. |
A codon specifies the same amino acid in Brassica and homo because codons areA. Non-overlappingB. CommalessC. UniversalD. Nonambiguous |
| Answer» Correct Answer - C | |
| 609. |
Baterial transformation was discovered byA. Avery et alB. Watson and CrickC. GriffithD. Hershey and Chase |
| Answer» Correct Answer - C | |
| 610. |
A gene that takes part in synthesis of polypeptide isA. Structural geneB. Regulator geneC. Operator geneD. Leading strand |
| Answer» Correct Answer - A | |
| 611. |
Maximum greenhouse gases are released from:A. IndiaB. FranceC. USAD. Britain |
| Answer» Correct Answer - A | |
| 612. |
Find the correct order of biomagnification of DDT in an aquatic food chain:A. Water -0.003 ppm, zooplankton -0.5 ppm, small fish -0.04 ppm, large fish -2 ppm , fish eating birds -25 ppmB. Water-0.003 ppm , zooplankton-0.04 ppm, zooplankton -0.5 ppm , large fish -2ppm, fish eating birds -25 ppmC. Water-0.003 ppm, small fish-0.04 ppm, zooplankton-0.5 ppm, large fish-2 ppm, fish eating birds -25 ppm .D. Water-0.003 ppm, fish eating birds-25 ppm, zooplankton -0.5 ppm , small fish -0.04 ppm, large fish -2.5 ppm |
| Answer» Correct Answer - B | |
| 613. |
Given figure represents biomagnification of DDT in an aquatic food chain. Select the incorrect statement regarding this. A. When agricultural fields are sprayed with DDT, it is carried by runoff water into nearby aquatic bodies.B. River water may have a very low concentration of DDT, but the carnivorous fish in that river may contain high concentration of DDT, which is still suitable for consumption by huyman beings.C. Increased concentration of DDT in birds affects calucium metabolism due to which egg shells become thin and break before maturity.D. None of these |
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Answer» Correct Answer - B River water will always have a very lowconcentration of DDT, but as we go to higher trophic levels concentration of DDT increases due to biomagnification. So carnivorous fish has high level of DDt and it is not suitable for consumption by human beings, because of presence of DDT. |
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| 614. |
Which of the following statements is not correct regarding biomagnification ? (i) Mercury accumulated by an organism cannot be metabolised. (ii) In the process of biomagnification, concentration of DDT is increased at successive trophic levels. (iii) Accumulation of cadmimu can cause thinning of egg shell in birds. (iv) DDT accumulation is a major cause of reduced population of fish eating birds. (v) Biomagnification occurs only in aquatic food chain.A. (i), (iii) and (v)B. (iii) and (iv)C. (iii) and (v)D. (i), (ii) and (iv) |
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Answer» Correct Answer - C The higher amounts of pesticide like DDT, disturb calcium metabolism of birds resulting in thinning of egg shells and their premature breaking. This is a major cause of reduction of population of fish eating birds. Biomagnification is found in all types of food chains. |
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| 615. |
Biomagnification occurs due to toxic chemical accumulated by an organism. a.Cannot be metabolised b. Can be metabolised c. Cannot be excreted d. Can be excretedA. a and cB. b and dC. a, b and cD. a, b, c and d |
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Answer» Correct Answer - A A few non-biodegradable toxic substances often pres ent in industrial waste water can undergo biological magnification or biomngnification in the aquatic food chain. This happens because a toxic substance accumulated by an organism cannot be metabolised or excreted and thus passed to the next higher trophic level. |
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| 616. |
During eutrophication, marsh plants eventually gives way to large masses of floating plants calledA. PeatB. BogC. PlanktonD. Bloom |
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Answer» Correct Answer - B During eutrophication, marsh plants eventually gives way to Large masses of floating plants called bog. |
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| 617. |
The smog which is formed at high temperature isA. London smogB. Classical smogC. Los Angeles smogD. Sulfurous smog |
| Answer» Correct Answer - C | |
| 618. |
Brown air and gray air is due to the oxides ofA. SulfurB. NitrogenC. CarbonD. Phosphorus |
| Answer» Correct Answer - B | |
| 619. |
Pollutant responsible for causing phaeophytization isA. `SO_(2)`B. NOxC. `CO_(2)`D. Aeroallergens |
| Answer» Correct Answer - A | |
| 620. |
The most effective greenhouse gas isA. CFCB. `CO_(2)`C. MethaneD. `O_(2)` |
| Answer» Correct Answer - A | |
| 621. |
Acid rain is due toA. `O_(3),` PANB. Oxides of nitrogen and sulfurC. Greenhouse effectD. All of these |
| Answer» Correct Answer - B | |
| 622. |
BOD is meausre ofA. Industrial waste being poured in water bodyB. Extent of pollution with organic compoundsC. CO combined with haemoglobinD. `O_(2)` required by green plants during night . |
| Answer» Correct Answer - B | |
| 623. |
Green muffler is meant forA. Reduction smogB. Sound insulationC. Preventing haze formationD. Reduction ground frost. |
| Answer» Correct Answer - B | |
| 624. |
The loudest noise is that ofA. Jet at take offB. Rocket launchC. Humpback WhaleD. Both A and B |
| Answer» Correct Answer - C | |
| 625. |
Kerala beaches are radioactive due toA. Uranium -238B. Radon-222C. Radium -224D. Thorium -232 |
| Answer» Correct Answer - D | |
| 626. |
In sea, the call of Humpback Whale is audible upto a distance ofA. 20 kmB. 200 kmC. 400 kmD. 800 km |
| Answer» Correct Answer - D | |
| 627. |
Maximum background radiatioon occurs inA. Chennai beachesB. mumbai beachesC. kerela beachesD. Andaman and nicobar islands |
| Answer» Correct Answer - C | |
| 628. |
Chernobyl is known for itsA. Reactor mishapB. Acir rainC. Water-loggingD. Salinisation of soil |
| Answer» Correct Answer - A | |
| 629. |
The first reactor mishap occurred inA. windscaleB. church rockC. three-mile islandD. kyshym. |
| Answer» Correct Answer - A | |
| 630. |
The biggest cause of reactor mishap isA. Radioactive in coolantB. meltdown of reactor coreC. crumbling of concrete coveringD. sinking of ground |
| Answer» Correct Answer - B | |
| 631. |
CO is harmful becauseA. It forms stable compound with hemoglobinB. It blocks mitosisC. It is mutagenicD. It causes defloation |
| Answer» Correct Answer - A | |
| 632. |
Besides `CH_(4) and CO_(2),` other greenhouse gas from agriculture area isA. `SO_(2)`B. `NH_(3)`C. `NO_(2)`D. CFC |
| Answer» Correct Answer - C | |
| 633. |
Most abundant water pollutant is:A. detergentsB. pesticidesC. industrial wastesD. ammonia. |
| Answer» Correct Answer - C | |
| 634. |
Catalytic converter brings aboutA. Complete oxidation of hydrocarbonsB. Oxidation of carbon monoxide to carbon dioxideC. Reduction of nitrogen oxide to nitrogenD. All the above |
| Answer» Correct Answer - D | |
| 635. |
Smoke or dust dispersed in air is calledA. fogB. hazeC. mistD. smog |
| Answer» Correct Answer - B | |
| 636. |
Mist is fog with horizontal visibility ofA. 100 mB. 200 mC. 500 mD. 1km |
| Answer» Correct Answer - D | |
| 637. |
What initiatives were taken for reducing vehicular air pollution in Delhi? Has air quality improved in Delhi ? |
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Answer» Under the direction of Supreme Court of India, the state government of Delhi took following measures to improve the quality of air: (i) Switching over the entire fleet of public transport buses from diesel to CNG by the end of 2002m (ii) Phasing out of old vehicles, (iii) Use of unleaded petrol, (iv) Use of low sulphur petrol and diesel, (v) Use of catalytic converters in vehicles, and (vi) Application of Euro II norms for vehicles. |
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| 638. |
Discuss briefly the following: (a) Greenhouse gases (b) Catalytic converter (c) Ultraviolet B . |
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Answer» (a) Greenhouse gases: The greenhouse effect refers to an overall increase in the average temperature of the Earth due to the presence of greenhouse gases. Greenhouse gases mainly consist of carbon dioxide, methane, and water vapour. When solar radiations reach the Earth, some of these radiations are absorbed. These absorbed radiations are released back into the atmosphere. These radiations are trapped by the greenhouse gases present in the atmosphere.. This helps in keeping our planet warm and thus, helps in human survival. However, an increase in the amount of greenhouse gases can lead to an excessive increase in the Earth’s temperature, thereby causing global warming. (b) Catalytic converter: Catalytic converters are devices fitted in automobiles to reduce vehicular pollution. These devices contain expensive metals such as platinum, palladium, and rhodium that act as catalysts. As the vehicular discharge passes through the catalytic converter, the unburnt hydrocarbons present in it get converted into carbon dioxide and water. Carbon monoxide and nitric oxide released by catalytic converters are converted into carbon dioxide and nitrogen gas (respectively). (c) Ultraviolet-B: Ultraviolet-B is an electromagnetic radiation which has a shorter wavelength than visible light. It is a harmful radiation that comes from sunlight and penetrates through the ozone hole onto the Earth’s surface. It induces many health hazards in humans. UV −B damages DNA and activates the process of skin ageing. It also causes skin darkening and skin cancer. High levels of UV −B cause corneal cataract in human beings. |
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| 639. |
Size of population tells us a lot about its status in the habits. |
| Answer» Correct Answer - T | |
| 640. |
Irrigation without proper drainage of water leads toA. DesertificationB. Soil erosionC. Water loggingD. All of the above |
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Answer» Correct Answer - C Irrigation without proper drainage of water leads to waterlogging. |
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| 641. |
Waterlogging and soil salinity are some of the problems that have come inA. Population explosionB. Green RevolutionC. Soil erosion and desertificationD. All of the above |
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Answer» Correct Answer - B Waterlogging and soil salinity are some of the problems that have come in the wake of the green revolution. |
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| 642. |
Conversion of forested areas to non-forested ones is calledA. AfforestationB. ReforestationC. DeforestationD. Both A and C |
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Answer» Correct Answer - C Conversion of forested areas to non-forested ones is called deforestation. |
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| 643. |
The Chernobyl disaster in the then USSR (nor Ukraine) was caused on 26.4.1986 by aA. pesticide factory accidentB. nuclear reactor accidentC. nuclear waste disposalD. nuclear weapon accident |
| Answer» Correct Answer - B | |
| 644. |
Smog is consequence ofA. rapid build of `CO_(2)` in atmosphereB. depletion of ozone layerC. presence of high pressure in atmosphereD. rapid build up of photochemical oxidants, pollutants and thermal inversions |
| Answer» Correct Answer - D | |
| 645. |
The most serious pollutant to rubber tyres isA. `CO_(2)`B. `CO`C. `O_(3)`D. `NO_(2)` |
| Answer» Correct Answer - C | |
| 646. |
Assertion: Amount of biodegradable organic matter present in water is measured by BOD of water Reason: During biodegradation of organic compounds. Oxygen is releasedA. If both are true with reason being correct explanationB. Both are true but reason is not correct explanationC. assertion is true but reason is wrongD. both are wrong |
| Answer» Correct Answer - C | |
| 647. |
TIP isA. Tuber inducing proteinB. Tuber inducing pricipleC. Tumour inducing proteinD. Tumour inducing principle |
| Answer» Correct Answer - D | |
| 648. |
In polygonum type of embryo sac, the cells areA. HaploidB. DiploidC. Both A and BD. Poiyploid |
| Answer» Correct Answer - C | |
| 649. |
Gene gun can introduced genes into cells with the help ofA. PlasmidsB. CosmideC. Microscopic pelletsD. Moringa |
| Answer» Correct Answer - C | |
| 650. |
Censer mechanism of seed dispersal occurs inA. BombaxB. AlstoniaC. PoppyD. Moringa |
| Answer» Correct Answer - C | |