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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.
| 801. |
A flower which can be divided into two exactly equal halves by any vertical planes passing through centre isA. ZygomorphicB. ActinomorphicC. PerfectD. Regular |
| Answer» Correct Answer - A | |
| 802. |
Human placenta isA. HaemochorialB. SyndesmochorialC. Yolk sacD. Haemo-endothelial |
| Answer» Correct Answer - A | |
| 803. |
If an unfertilized ovum of frogs is pricked with a micro- needle , it will :A. Die immediatelyB. Start dividingC. Remain undividedD. None of these |
| Answer» Correct Answer - B | |
| 804. |
Foetus developing in the genital tract without getting nourishment from the mother is a case ofA. ViviparyB. OviparyC. Ovo-viviparyD. None of these |
| Answer» Correct Answer - C | |
| 805. |
$ Human population can be controlled with the help of certain devices such as condoms, copper T and diaphragm. ! All the above devices acts as barriers for fertilization.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 | |
| 806. |
$ DNA contains all the neccesary information and instructions for cell reproduction Reproduction is not essential for the living organisms.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 | |
| 807. |
$ Plants which live for many years are called perennials. Perennials which produce flowers and seeds only once during their life span are called monocarpic plants.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 | |
| 808. |
$ the sum total of anabolic and catabolic activities is called metabolism ! Organisms with positive metabolism remain healthy.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 | |
| 809. |
Cryosurgery is resorted isA. Crush gall bladder stonesB. Destroy cancerous tumoursC. Warts and tumoursD. In coronary bypass |
| Answer» Correct Answer - C | |
| 810. |
A sacred plant isA. Ocimum basilicumB. Ficus bengalensisC. Prospis cineraiaD. Aloe vera |
| Answer» Correct Answer - C | |
| 811. |
Critically endangered animal- species belonging to India isA. 31B. 18C. 44D. 109 |
| Answer» Correct Answer - B | |
| 812. |
In the treatment of waste water before discharge which treatment stage inovolve biological treatment ?A. Primary stageB. Secondary treatament stageC. Reverse osmosisD. Tertiary treatement stage |
| Answer» Correct Answer - B | |
| 813. |
Earth Summit at Rio de Janeioro was related to:A. conservation of environmentB. survey of natural resourcesC. soil fertilityD. preventation of afforestation |
| Answer» Correct Answer - A | |
| 814. |
In integrated waste water treatment cleaning occurs inA. Two stagesB. Three stagesC. Four StagesD. Five Stages |
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Answer» Correct Answer - A Waste water including sewage can be treated in an integrated manner by utilising a mix of artificial and natural processes. The people of town Arcata situated along the northern coast of California (USA) collaborating with biolog ist from Humboldt State University created on integ rated waste water treatment process. The cleaning occurs in two stages: 1. First stage or artificial method or conventional method. 2. Second stage or natural method or innovative approach. |
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| 815. |
Which of the following steps are taken in the first stage of integrated waste water treatment?A. SedimentationB. FilteringC. Chlorine treatmentD. All of the above |
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Answer» Correct Answer - D In first stage 3 process occurs: 1. Sedimentation, 2. Filtration and 3. Chlorine treatment. |
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| 816. |
Assertion: The marshes in the innovative approach also constitute a sanctuary. Reason: The marshes have a high level of biodiversity in the form of fishes, animals and birds.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 The marshes in the innovative approach also constitute a sanctuary as the marshes have a high level of biodiversity in the form of fishes, animals and birds. |
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| 817. |
Wastewater including sewage can be treated in an integrated manner, by utilising a mix of artificial and natural processes. An example of such an initiative is theA. State of India, i.e. Bengaluru/Banglore, by Ahmed KhanB. State of India, i.e. Sonipat, Haryana, by Ramesh Chandra DagarC. Town of Arcata, situated along the northern coast of California, USA (America)D. Gharwal Himalaya, Uttarakhand |
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Answer» Correct Answer - C Wastewater including sewage can be treated in an int egrated manner, by utilising a mix of artificial and natural processes. An example of such an initiative is the town of Arcata, situated along the northern coast of California, USA (America). |
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| 818. |
Which type of toxity was experienced by surviors of Nagasaki and hiroshimaA. Radioactive pollutionB. CosmicC. UltravioletD. Infra-red rays |
| Answer» Correct Answer - A | |
| 819. |
"Chipko Movement" is connected with :A. Conservation of water resorucesB. Conservation of forestsC. Conservation of tigerD. Conservation of biodiversity |
| Answer» Correct Answer - B | |
| 820. |
Ozone layer occurs inA. TroposphereB. HydrosphereC. StratosphereD. Lithosphere. |
| Answer» Correct Answer - C | |
| 821. |
DDT isA. OrganophosphatesB. OrganochlorineC. CarbonateD. Triazine |
| Answer» Correct Answer - B | |
| 822. |
Which pesticide is a herbicideA. MalathionB. LindaneC. BHCD. 2,4-D |
| Answer» Correct Answer - D | |
| 823. |
Following is the flow chart explaining major microbial processes occurring during anaerobic sludge digestion. Fill in the blanks(a), (b), (c) and (d). Also explain this treatment. |
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Answer» (a) Monomers (sugars, amino acids, fatty acids) (b) Acetate (c) `CH_(4) + CO_(2) (d) CH_(4)` |
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| 824. |
(a) Name the phenomenon which contributes to keep the earth warmer than the moon. (b) How it does so? (c) What are its consequences? |
| Answer» (a) Green house effect. | |
| 825. |
(a) How does activated sludge get producedd during sewage treatment? (b) Explain how this sludge is used in blogas production. |
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Answer» (a) Sewage, after primary treatment, is pumped into an aeration tank. Here, it is mixed with air and sludge containing algae and bacteria. Bacteria consume the organic matter and algae produce oxygen for the bacteria. The water which is now almost clear of organic matter, is removed and the activated sludged is allowed to settle at the bottom of settlink tank. (b) The activated sludge is then passed to anoxic sludge digester for anaerobic digestion of remaining organic matter, In this way, sewage is converted into finally methance `(CH_(4))`, and other gases. These are the major component of biogas. |
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| 826. |
Sewage water can be purified for recycling with action of :A. microorganismsB. penicillinC. fishesD. aquatic plants |
| Answer» Correct Answer - A | |
| 827. |
Sewage water is purified for recycling by the action ofA. LightB. MicroorganismsC. Aquatic plantsD. Fishes |
| Answer» Correct Answer - B | |
| 828. |
Sacred groves are found in |
| Answer» Correct Answer - T | |
| 829. |
Plankton areA. Free- floating formsB. Actively floating formsC. Passively floating formsD. Both A and C |
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Answer» Correct Answer - D Plankton are free-floating (passively floating) forms. |
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| 830. |
Read the following statements and find out the incorrect statement.A. Solids are relatively easy to remove from domestic sewage.B. Dissolved salts such as nitrates and phosphates, and toxic metal ions and organic compounds are most difficult to remove.C. Presence of large amounts of nutrients in waters causes excessive growth of fishes and other aquatic creatures.D. None of the above. |
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Answer» Correct Answer - C Presence of large amount of nutrients in waters also causes excessive growth of Planktonic (free floating algae) called an algal bloom, which imparts a distinct colour to Water bodies. Algal bloom causes deterioration of the water quality and fish mortality. |
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| 831. |
Acid rains are produced byA. Excess `NO_2` and `SO_2` form burning fossil fuelsB. Excess production of `NH_3` by industry and coal gasC. Excess release of carbon monoxide by incomplete combustionD. Excess formation of `CO_2` by combustion and animal respiration |
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Answer» Correct Answer - A Acid rain are produced by excess `NO_2` and `SO_2` from burning fossil fuel. |
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| 832. |
Which air pollutant could cause rains to be acidic?A. Dust particles from cement factoriesB. Insecticides from crop spraysC. Smoke from wood firesD. Sulphur dioxide from coal-fired power stations |
| Answer» Correct Answer - D | |
| 833. |
Which of the following isotopes is most dangerous to Homo sapiens?A. Phosphours - 32B. Strontium - 90C. Casesium - 137D. Iodine - 131 |
| Answer» Correct Answer - B | |
| 834. |
The congres grass/carrot grass that causes allergy arrived in India in 1956. It isA. Parthenium hysterophorousB. Eichhornia crassipesC. Opuntia dilleniD. Sorghum halepens |
| Answer» Correct Answer - A | |
| 835. |
Volcanic eruptions let out large quantities ofA. Harmful dust and sulfurous gasesB. Harmful dust and nitrous gasesC. Harmful dust and carbonous gasesD. Harmful dust and phosphorous gases |
| Answer» Correct Answer - C | |
| 836. |
As a general rule, ionizing radiation is most damaging toA. Mature, stable cellsB. Actively dividing cellsC. Highly specialized cellsD. Cells in which food is stored |
| Answer» Correct Answer - B | |
| 837. |
Environment planning organisation isA. CSIRB. NEERIC. ICARD. CEPHERI |
| Answer» Correct Answer - B | |
| 838. |
Find incorrect statement w.r.t. catalytic converterA. Platinum-palladium and rhodium as catalystsB. Lead in petrol activates the catalystsC. Reduced the emission of poisonous gasesD. CO and `NO_(x)` changed to `CO_(2)` and `N_(2)` gas |
| Answer» Correct Answer - B | |
| 839. |
One of the following acts as secondary pollutantsA. `Br_(2)`B. `Cl_(2)`C. `NO_(2)`D. `HNO_(3)` |
| Answer» Correct Answer - D | |
| 840. |
One of the following acts as secondary pollutantsA. BrB. `NO_(2)`C. `HNO_(3)`D. `Cl_(2)` |
| Answer» Correct Answer - C | |
| 841. |
Which of the following is not a cause of natural pollution ?A. Volcanic eruptionB. UV radiationC. Forest fireD. Mercury |
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Answer» Correct Answer - D Natural pollution comes from natural sources like release of methane by cattle and paddy fields, carbon dioxide from plants and animals, dust storms, nitrogen oxides, ozone, volcanic eruptions, emission of natural gas, soil erosion, ultraviolet rays, etc. Mercury is not a cause of natural pollution. |
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| 842. |
The Government of India has passed the environment (Protection) Act in the yearA. 1990B. 1987C. 1986D. 1992 |
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Answer» Correct Answer - C In order to control environmental pollution, the Government of India has passed the Environment (Protection) Act in 1986 to protect and improve the quality of our environment. |
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| 843. |
Which of the following statements is correct ?A. Primary pollutants are more harmful than secondary pollutants.B. Primary pollutants ans secondary pollutants are equally harmful.C. Secondary pollutants are more harmful than primary pollutants.D. DDT is a secondary pollutant. |
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Answer» Correct Answer - C Primary pollutants persist in the form they are released in the environment. Secondary pollutants are formed by reaction amongst the primary pollutants. Secondary pollutant are more toxic than primary pollutants. DDT is aprimary pollutant. |
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| 844. |
Which is wrong about Bhopal tragedyA. Radioactiv fallout engulfed BhopalB. Methyl isocyanate gas leakage took placeC. Throusands of human beings diedD. IT took place in the night of december 2/3 1984 |
| Answer» Correct Answer - A | |
| 845. |
Which one of the following statement is wrong in case of Bhopal tragedy ?A. It took place in the night of December 2/3, 1984.B. Methyl Isocyanate gas leakage took placeC. Thousands of human beings diedD. Radioactive fall out engulfed Bhopal |
| Answer» Correct Answer - D | |
| 846. |
Which is wrong about Bhopal tragedyA. Radioactive fallout engulfed Bhopal.B. Methyl isocyanate gas leakage took place.C. Thousands of human beings died.D. Take place in the night of Dec 2/3, 1984 |
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Answer» Correct Answer - A Bhopal Gas Tragedy occurs in the night of December 2/3, 1984 in which thousands of human being died. Gas released during BGT was MIC (Methyl Isocyanate). |
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| 847. |
Which of the following will not control particular pollutantsA. IncineratorB. ArresterC. ScrubberD. Filiter |
| Answer» Correct Answer - A | |
| 848. |
Act formulated in 1986A. The insecticide ActB. The Environmental (protection ) ActC. The water (Preventation and control of Pollution) ActD. The Air(Preventation and control of pollution ) act |
| Answer» Correct Answer - B | |
| 849. |
Which of the following will not control particular pollutantsA. IncineratorB. ArresterC. ScrubberD. Filter |
| Answer» Correct Answer - A | |
| 850. |
Which of the following strategy is not a correct approach to reduce global warming ?A. Developing substitutes of chlorofluorocarbonsB. Increasing use of air conditioners, refrigerator units and production of plastic foams and propellants in aerosol spray cansC. Minimising use of nitrogen fertilizers in agriculture for reducing nitrogen oxide emissionD. Increaseing vegetation cover, particularly forest, for photosynthetic utilisation of `CO_(2)` |
| Answer» Correct Answer - B | |