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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.
1751. |
Plants do not get benefits fromA. `N_(2)` in airB. `O_(2)` in airC. `CO_(2)` in airD. `O_(3)` in air |
Answer» Correct Answer - D | |
1752. |
Photochemical smog formed in congested metropolitan cities mainly consists of :A. Ozone, peroxyacyl nitrate and `NO_(x)`B. smokes peroxyacyl nitrate and `SO_(2)`C. hydrocarbons , `SO_(2)` and `CO_(2)`D. Hydrocarbons, ozone and `SO_(x)` |
Answer» Correct Answer - A | |
1753. |
Process by which insecticides like DDT reach man isA. BioaccumulationB. biomagnificationC. BioremediationD. Eutrophication. |
Answer» Correct Answer - B | |
1754. |
Match the columns A. a-5, b-3,c-1,d-2,e-4B. a-2,b-3,c-5,d-1,e-4C. a-3,b-4,c-5,d-1,e-2D. a-5,b-4,c-3,d-2,e-1 |
Answer» Correct Answer - A | |
1755. |
A mutagen pollutant is:A. OrganosphosphatesB. ResinsC. HydrocarbonsD. Nitrogen oxides. |
Answer» Correct Answer - C | |
1756. |
Excess atmosperic `CO_(2)` increases greenhouse effect as it:A. Is opaque to infra-red raysB. is not opaque to infra-red raysC. Precipitates dust in the atmosphereD. Reduces atmospheric pressure. |
Answer» Correct Answer - A | |
1757. |
Worker Bees aiding queen to reproduce and converting other females into workers is an example ofA. social set upB. altruismC. parental careD. peck order |
Answer» Correct Answer - B | |
1758. |
Strontium-90 causesA. bone cancerB. TBC. hepatitisD. jaundice |
Answer» Correct Answer - A | |
1759. |
The most abundant nucleides found in river insects areA. P-32B. SC. Zm-65D. Both (a) and (c) |
Answer» Correct Answer - D | |
1760. |
The two gases making highest relative contribution to the greenhouse gases are:A. `CO_(2)` and `CH_(4)`B. `CH_(4)` and `N_(2)O`C. CFCs and `N_(2)O`D. `CO_(2)` and `N_(2)O` |
Answer» Correct Answer - A | |
1761. |
One greenhouse gas contributes 14% to total global warming and another contributes 6%. These are respectively indentified as:A. `N_(2)O` and `CO_(2)`B. CFCs and `N_(2)O`C. Methane and `CO_(2)`D. Methane and CFCs |
Answer» Correct Answer - B | |
1762. |
One greenhouse gas contributes 14% to total global warming and another contributes 6%. These are respectively indentified as:A. `N_(2)O` and `CO_(2)`B. CFCs and `N_(2)O`C. Methan and `CO_(2)`D. Methane and CFCs |
Answer» Correct Answer - B | |
1763. |
One greenhouse gas contributes 14% to total global warming and another contributes 6%. These are respectively indentified as:A. `N_(2)O` and `CO_(2)`B. `N_(2)O` and CFCsC. CFCs and methaneD. `N_(2)O` and methane |
Answer» Correct Answer - D | |
1764. |
One greenhouse gas contributes 14% to total global warming and another contributes 6%. These are respectively indentified as:A. `NO_(2)` and `CO_(2)`B. CFC and `N_(2)O`C. Methan and `CO_(2)`D. Methane and CFCs |
Answer» Correct Answer - B | |
1765. |
One greenhouse gas contributes 14% to total global warming and another contributes 6%. These are respectively indentified as:A. `N_(2)O and CO_(2)`B. `CFCs and N_(2)O`C. `CH_(4) and CO_(2)`D. `CH_(4) and CFCs` |
Answer» Correct Answer - B The relative contribution of various greenhouse hases to total global warming is as follows `{:("Gas","Per cent"),(CO_(2),60%),(CH_(4),20%),(CFSs,14%),(N_(2)O,6%):}` |
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1766. |
Which one of the following impuritites is easiest to remove from wastewater ?A. BacteriaB. ColloidsC. Dissolved soildsD. Suspended solids |
Answer» Three type of impurites are found in waste water , suspended particle (solids). Colloidal impurities and dissolved material (inorganic) like calcium, ammonia, toxic material , phosphate , sodium , calcium and nitrate. Out of them suspended solids like sand silt and clay impurities are easily removes , in sewage treatment plants. | |
1767. |
Assertion : BOD of river polluted by sewage is more than 20 ppm. Reason: Polluted river contains excess of organic matter.A. If both are true with reason being correct explanationB. Both true but reason is not correct explanationC. assertion is true but reason is wrongD. Both are wrong |
Answer» Correct Answer - A | |
1768. |
Why is it necessary to remove sulphur from petroleum products ?A. To reduce the emission of sulphur dioxide in exhaust fumesB. To increase efficency of automobiles enginesC. To use sulphur removed from petroleum for commercial purposesD. To increase the life span of engine silencers |
Answer» Correct Answer - A By removing sulphur from petrol and diesel, the emission of `SO_(2)` can be reduced in exhaust.` SO_(2)` is a very harmful air pollutant. It can damage the vegetation by causing chlorosis. It can cause acid rain (by forming `H_(2)SO_(3)` and `H_(2)SO_(4))`, damaging buildings and plants. In human beings it causes irritation in eyes and damage to respiratory system (e.g., bronchitis). |
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1769. |
Which one of the following impuritites is easiest to remove from wastewater ?A. BacteriaB. ColloidsC. Dissolved solidsD. Suspended solids |
Answer» Correct Answer - D | |
1770. |
Match correctly the following and choose the correct option. The correct matches is:A. A-ii, B-i, C-iv, D-iiiB. A-iii, B-i,i C-iv, D-iC. A-iii, B-iv, C-i, D-iiD. A-iii, B-I, C-iv, D-i |
Answer» Correct Answer - C | |
1771. |
Why is it necessary to remove sulphur from petroleum products ?A. To increases the life span of engine silencers.B. To reduce the emission of sulphur dioxide in exhaust fumes.C. To increases efficiency of automobiles enginesD. To use sulphur removed from petroleum for commercial purposes. |
Answer» Correct Answer - B | |
1772. |
Catalytic converters are fitted into automobiles to reduce emission of harmful gases. Catalytic convertes change unburnt hydrocarbons intoA. methaneB. carbon monoxideC. carbon dioxide and waterD. carbon dioxide and methane |
Answer» Correct Answer - C | |
1773. |
Catalytic converters are fitted into automobiles to reduce emission of harmful gases. Catalytic convertes change unburnt hydrocarbons intoA. carbon dioxide and waterB. carbon monoxideC. methaneD. carbon dioxide and methane |
Answer» Correct Answer - A | |
1774. |
Assertion: Suspended particulate matter(SPM) is an important pollutant released by diesel vehicles. Reason : Catalytic convertes greatly reduce pollution caused by automobiles.A. If both are true with reason being correct explanationB. Both true but reason is not correct explanationC. assertion is true but reason is wrongD. Both are wrong |
Answer» Correct Answer - B | |
1775. |
Which is the coolant in fast breeder reactorA. Pressurised light waterB. boiling light waterC. deuterium or heavy waterD. liquid sodium |
Answer» Correct Answer - D | |
1776. |
World environment day coincides with commemoration ofA. Montreal protocolB. Vienna conventionC. First united nations conferences on human environmentD. Helsinki declaration |
Answer» Correct Answer - C | |
1777. |
The innermost wall layer of pollen sac is tapetum. Its functions is inA. ProtectionB. NutritionC. DhisenceD. Mechanical strength |
Answer» Correct Answer - B | |
1778. |
In monocot embryo the radicle is produced byA. LagerstroemiaB. MoringaC. ColuteaD. Shorea |
Answer» Correct Answer - B | |
1779. |
The true statement about "greenhouse effect" is that it is caused by:A. `CO_(2)` onlyB. `SO_(2)` onlyC. `CO_(2)` and `SO_(2)`D. `CO_(2), CFC, CH_(4)` and `NO_(2)` |
Answer» Correct Answer - D | |
1780. |
Greenhouse effect is due to theA. accumulation of `O_(3)` and depletion of `O_(2)`B. accumulation of `O_(3)` and `CO_(2)`C. depletion of `CO_(2)` and `O_(3)`D. accumulation of green plants |
Answer» Correct Answer - A | |
1781. |
Everything that goes out in trash, is calledA. Sanitary landfillsB. Solid wastesC. Electronic wastesD. Radioactive wastes |
Answer» Correct Answer - B Everything that goes out in trash is called solid wastes. |
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1782. |
Solid waste refer to anything that goes out in trash. |
Answer» Correct Answer - T | |
1783. |
"Grey Air" refers toA. Incomplete smog formationB. `N_(2)O`C. COD. `SO_(2)` |
Answer» Correct Answer - A | |
1784. |
The edile part in fruit of Almond/Trapa isA. EndrocarpB. MesocarpC. EpicarpD. Cothledons |
Answer» Correct Answer - B | |
1785. |
Expand BODA. Biological oxygen demandB. Biosynthetic oxygen demandC. Biogeochemical oxygen destroyerD. Biogeochemical oxygen dimension |
Answer» Correct Answer - A | |
1786. |
The reaction in which the same chemical reacts again and again with the substract isA. catalyticB. enzymaticC. chainamicticD. both A and B |
Answer» Correct Answer - C | |
1787. |
Best economic method to harvest the solar energy:-A. Solar cellB. Energy plantationC. Cultivation of sugarcane, then energy obtained by burning itD. Solar cooker |
Answer» Correct Answer - C | |
1788. |
The best method to preserve the wild relatives of plants isA. By growing them in natural habitatsB. Gene libraryC. By storing seedsD. Cryopreservation |
Answer» Correct Answer - A | |
1789. |
Stethoscope was invented byA. WaksmanB. KochC. LaennecD. Jenner |
Answer» Correct Answer - C | |
1790. |
The term "Nuclear winter" is associated with:A. nuclear warB. nuclear disarmamentC. nuclear weapon testingD. aftermath of a nuclear holocaust |
Answer» Correct Answer - D | |
1791. |
Nulcear leakage is:A. InfectiousB. CarcinogenicC. Auto-immunisingD. Immunosuppressant |
Answer» Correct Answer - B | |
1792. |
The animals in the deep sea water are severely affected by:A. sewageB. oil spillsC. heavy metalsD. nuclear wastes |
Answer» Correct Answer - D | |
1793. |
Mortality rate is higher inA. Male infants than female infantsB. Male youth than female youngC. Male elderly than female elderlyD. All of above |
Answer» Correct Answer - D | |
1794. |
Severely undernourished component of human population isA. 0.2B. 0.4C. 0.5D. 0.6 |
Answer» Correct Answer - A | |
1795. |
Foot and mouth disease of animals is caused byA. BacteriumB. ProtozoanC. VirusD. Worm |
Answer» Correct Answer - C | |
1796. |
Sympatric speciation develops reproductive isolation withoutA. GeographicB. Barrier to matingC. Barrier to gene flowD. Genetic change |
Answer» Correct Answer - A | |
1797. |
Antibiotic useful in treatment is anthrax isA. PenicillinB. ChloramphenicolC. CiprofloxacinD. Erythromycin |
Answer» Correct Answer - C | |
1798. |
Induced breeding is carried out with the help of extract fromA. ThyroidB. ParathyroidC. PituitaryD. Adrenal |
Answer» Correct Answer - C | |
1799. |
Immunodeficiency can result fromA. Gene mutationB. InfectionC. MalnutritionD. All the above |
Answer» Correct Answer - D | |
1800. |
Prosthesis that is designed to generate repetitive electrical impulses to the heart, is known asA. Artificial cadiac pacemakerB. Artificial heart valveC. Intra-aortic balloon pumpD. Heart- lung machine |
Answer» Correct Answer - A | |