Description : Pick out the wrong statement. (A) Biological oxygen demand (B.O.D.) value of a sewerage sample is always lower than its chemical oxygen demand (C.O.D.) value (B) Environmental pollution by ... in but does not allow the short wavelength infra red radiation to escape out of the earth's atmosphere
Last Answer : (D) The characteristic of a green house body is that it allows the long wavelength incoming solar radiation to come in but does not allow the short wavelength infra red radiation to escape out of the earth's atmosphere
Description : Biological shield is provided in a nuclear power reactor to protect the __________ from radiation damage. (A) Fuel elements (B) Operating personnels (C) Walls of the reactor (D) None of these
Last Answer : (B) Operating personnels
Description : An ideal coolant for a nuclear reactor should (A) Be a good absorber of neutrons (B) Be capable of attaining high temperature, only when it is pressurised (C) Have high density, but low heat transfer co-efficient (D) Be free from radiation damage and non-corrosive
Last Answer : (D) Be free from radiation damage and non-corrosive
Description : Ceramic nuclear metals compared to solid nuclear metals have (A) Higher melting points (B) Low strength at high temperature (C) More chances of radiation damage (D) Poorer corrosion resistance
Last Answer : (A) Higher melting points
Description : Green House Effect' means (1) Pollution in houses in tropical region (2) Prevention of ultraviolet radiation by the ozone layer (3) Trapping of solar energy due to atmospheric gases (4) Damage to green painted buildings
Last Answer : (3) Trapping of solar energy due to atmospheric gases Explanation: The greenhouse effect occurs when Earth's atmosphere traps solar radiation because of the presence of certain gases, causing the ... , nitrous oxide (N2O) and other gases, ac-cording to the Environmental Protection Agency (EPA
Description : Green House Effect’ means (1) Pollution in houses in tropical region (2) Prevention of ultraviolet radiation by the ozone layer (3) Trapping of solar energy due to atmospheric gases (4) Damage to green painted buildings
Last Answer : Trapping of solar energy due to atmospheric gases
Description : What type of high energy radiation can cause damage to human tissue?
Last Answer : What is the answer ?
Description : Can noise pollution cause brain damage ?
Last Answer : Noise pollution causes sleep disturbances , anger , restlessness and mental illness in the brain.
Description : When the relative humidity is below 10%, what happens to magnetic tape and parts of a tape recorder that could cause environmental damage?
Last Answer : Dirt build-up caused by static electricity.
Description : Which of the following is not a reason for the small scale use of radio for educational purposes? Options: A) All subject-matter does not lend itself equally to its use B) Many teachers ... to give up our preconceptions of educations D) The evidence relative to its effectiveness is too inconclusive
Last Answer : D) The evidence relative to its effectiveness is too inconclusive
Description : A doctor studies the relative effectiveness of two drugs of dengue fever. His research would be classified as (A) Descriptive Survey (B) Experimental Research (C) Case Study (D) Ethnography
Last Answer : (B) Experimental Research
Description : Heavy water is preferred over ordinary water as a coolant, because it. (A) Acts both as an efficient coolant as well as a moderator (B) Can be heated to a higher temperature without pressurizing (C) Is less prone to radiation damage (D) All (A), (B) and (C)
Last Answer : (D) All (A), (B) and (C)
Description : Pick out the wrong statement pertaining to the cooling towers. (A) In case of induced draft cooling tower, the fan is placed at the top of the tower (B) Effectiveness of ... Effectiveness of a mechanical draft cooling tower is reduced with increase in air wet-bulb temperature
Last Answer : (D) Effectiveness of a mechanical draft cooling tower is reduced with increase in air wet-bulb temperature
Description : Thermal shield used in high powered nuclear reactor to protect the walls of the reactor from radiation damage is made of (A) Concrete (B) Steel (C) Zircaloy (D) Graphite
Last Answer : (B) Steel
Description : People living at sea level have around 5 million RBC per cubic millimeter of their blood whereas those living at an altitude to 5400 metres have around 8 million. This is because at high altitude ... required amount of O2 to survive (d) there is more UV radiation which enhances RBC production.
Last Answer : (c) atmospheric O2 level is less and hence more RBCs are needed to absorb the required amount of O2 to survive
Description : The sales channel effectiveness for the outside sales people is highest for a. High End and Size. b. Performance, High and Size. c. Traditional and Low. d. Low End and High End. e. Size.
Last Answer : a. High End and Size.
Description : Sales channel effectiveness for inside salespeople is highest for a. Traditional, Low end and High End b. Performance and High End c. Performance, Size and High End d. Performance e. High End
Last Answer : d. Performance
Description : The sales channel effectiveness for the distributors is highest for a. High End. b. Performance, High and Size. c. Traditional and Low. d. Low End and High End. e. Size.
Last Answer : c. Traditional and Low.
Description : Enlist different biological agents which damage paper based library resources. -Technology
Last Answer : The three biological agents that damage paper based library resources are Microorganisms, Insects and Rodents.
Description : The maximum biological damage is produced by – (1) X rays (2) gamma - rays (3) beta - rays (4) alpha - rays
Last Answer : (2) gamma - rays Explanation: Gamma radiation, also known as gamma rays, is electromagnetic radiation of high frequency and therefore high energy. Gamma rays are ionizing radiation and are thus biologically hazardous.
Description : Maximum biological damage occours due to
Last Answer : Gama Rays
Description : The maximum biological damage is produced by (1) X – rays (2) gamma – rays (3) beta – rays (4) alpha – rays
Last Answer : gamma – rays
Description : Which of the following is not a natural source of air pollution? (A) Volcanic eruptions and lightening discharges (B) Biological decay of vegetable matter (C) Photochemical oxidation of organic matter (D) None of these
Last Answer : (D) None of these
Description : Which of the following is NOT one of the 3 main types of water pollution? a. Physical pollution b. Chemical pollution c. Thermal pollution d. Biological pollution
Last Answer : c. Thermal pollution
Description : Water pollution can be identified by testing its A. PH level B. Biological Oxygen Demand (BOD) C. Both (a) and (b) D. None of these.
Last Answer : C. Both (a) and (b)
Description : ater pollution can be identified by testing its A. PH level B. Biological Oxygen Demand (BOD) C. Both (a) and (b) D. None of these.
Description : The ratio of oxygen available to the oxygen required for stabilisation of sewage is called the (A) Bacterial stability factor (B) Relative stability (C) Biological oxygen demand (BOD) (D) Oxygen ion concentration
Last Answer : (B) Relative stability
Description : In the United States, the units of measure for the potential biological risk associated with exposure to ionizing radiation are the rem and millirem. What comparable units are used in the metric system?
Last Answer : ANSWER: SIEVERTS or MILLISIEVERTS
Description : What factors can cause controls that are established and implemented for a prolonged period to lose their effectiveness in the composite risk management process?
Last Answer : Need answer
Description : 'Green Accounting' means measuring the National Income of the country taking into account estimation of – (1) the total forest area of the country (2) the destruction of forest cover of the country (3) pollution and environmental damage (4) area of reclaimed fallow land
Last Answer : (3) pollution and environmental damage Explanation: Green accounting is a type of accounting that attempts to factor environmental costs into the financial results of operations. It ... ignores the environment and therefore decisionmakers need a revised model that incorporates green accounting.
Description : ‘Green Accounting’ means measuring the National Income of the country taking into account estimation of (1) the total forest area of the country (2) the destruction of forest cover of the country (3) pollution and environmental damage (4) area of reclaimed fallow land
Last Answer : pollution and environmental damage
Description : Does reading a book in low light cause eye damage ?
Last Answer : Yes. When we read a book in low light, our eye rods and any cell activity starts. But if you study in the dark for a long time, the eye rod and any cell is damaged. This can lead to eye problems and brain problems.
Description : Which of the following statements describes the significance of ambient temperature in relation to the service life of electronic components? A. Ambient temperature should be as high as possible to drive ... is kept low. D. A reduced ambient temperature causes a corresponding reduced service life.
Last Answer : Answer: B
Description : Is the uv radiation from stars magnified enough to damage ones eyes when viewed from a telescope?
Last Answer : Well, omitting the sun I don’t think you will be able to damage your eyes looking at the night sky through a scope. There is just not enough light to concentrate.
Description : Long-term radiation damage to bowels?
Last Answer : Yep. I agree, but the only people who will agree with you are in alternative remedies. If your doctors are telling you everything’s fine and your instinct says it’s not, seek out a holistic medical doctor or a naturopath.
Description : Assertion (A): UV radiation causes photodissociation of ozone into `O_(2)` and O, thus causing damage to the stratospheric change. Reason (R): Ozone h
Last Answer : Assertion (A): UV radiation causes photodissociation of ozone into `O_(2)` and O, thus causing damage ... true but reason is wrong D. Both are wrong
Description : If by mistake radioactive substance gets into human body, then from the point of view of radiation damage, the most harmful will be one that emits.
Last Answer : If by mistake radioactive substance gets into human body, then from the point of view of radiation damage, ... neutrons C. `beta`-rays D. `alpha`-rays
Description : Damage to DNA caused by ultraviolet radiation can be repaired by (A) uvr ABC excinuclease (B) DNA polymerase I (C) DNA ligase (D) All of these
Last Answer : Answer : D
Description : The damage of the human body due to radiation (x-rays or y-rays etc,) is measured in (1) Rads (2) Rems (3) Roentgen (4) Curie
Last Answer : (1) Rads Explanation: The rad is a unit of absorbed radiation dose, defined as 1 rad = 0.01 Gy = 0.01 J/kg. It was originally defined in CGS units in 1953 as the dose causing 100 ergs of energy to be absorbed by one gram of matter.
Description : The damage of the human body due to radiation (X-rays or y-rays etc,) is measured in – (1) Rems (2) Roentgen (3) Curie (4) Rads
Last Answer : (1) Rems Explanation: In the case of damage to human body due to radiation, the most important factor is the amount of the dose - the amount of energy actually deposited in the body. The ... absorbed dose) = 1 rem or 1000 mrem (dose equivalent) (Source: United States Nuclear Regulatory Commission).
Description : The gas present in the stratosphere which filters out some of the sun's ultraviolet light and provides an effective shield against radiation damage to living things is?
Last Answer : ozone
Description : The bacterium Deinococcus radiodurans has been of interest to molecular biologists because a. it has the smallest known bacterial genome. b. it is a "living fossil" linking the Bacteria and Archaea. c. it has the largest known bacterial genome. d. it is very resistant to radiation damage.
Last Answer : d. it is very resistant to radiation damage.
Description : The damage of the human body due to radiation (X-rays or grays etc,) is measured in : (1) Rems (2) Roentgen (3) Curie (4) Rads
Last Answer : Rems
Description : What is Relative Radiation Power ?
Last Answer : The ratio of the irradiating power of an object to the irradiating power of an ideal black object is called relative irradiation power.
Description : Width measured in degrees of a major lobes between end of the love at which the relative power is one half (-3dB) its value from the peak of the lobe. A. Bandwidth B. Wavelength C. Radiation D. Beamwidth
Last Answer : D. Beamwidth
Description : Does the temperature of tap water affect fluoride's effectiveness in protecting teeth?
Last Answer : https://fluorideresearch.org/484/files/FJ2015_v48_n4_p338-344_sfs.pdf
Description : Carnot cycle efficiency depends upon (a) properties of the medium/substance used (b) condition of engine (c) working condition (d) temperature range of operation (e) effectiveness of insulating material around the engine.
Last Answer : Answer : d
Description : How low can the temperature go in an unheated but insulated cabin in order to damage LCD TV, phone, and computer?
Last Answer : answer:Are you the only one closing in on ten thousand Lurve? That is impressive! I think the computer can survive in very low tempts.. Not sure about the rest. I’m an IT girl and I know we have the AC on the severs 24/7.