Description : Mention some measures that can be taken to control air pollution at source
Last Answer : a) Reducing the use of vehicles for short travel. b) Using car pooling to travel & reducing individual vehicles. c) Installing electrostatic precipitators in chimneys of factories & industries.
Description : The radioactive pollution may result from: 1. medical waste 2. coal ash 3. production of nuclear arsenal 4. mining of uranium 5. decommissioning of nuclear weapons The correct causes are: (a) 1, 3 and 4 only (b) 1, 3, 4 and 5 only (c) 2, 3, 4 and 5 only (d) 1, 2, 3, 4 and 5
Last Answer : Ans:(b)
Description : What is meant by radioactive pollution?
Last Answer : The pollution caused due to emission of protons (alpha particles), electrons (beta particles) and gamma rays is called radioactive pollution.
Description : Which of the following caused radioactive pollution along the coast of Kerala? (1) Plutonium (2) Zinc (3) Thorium (4) Radium
Last Answer : (3) Thorium Explanation: Thorium-rich monazite sand deposits on the Kerala coast have been responsible for natural radioactive contamination. It has been pronounced on the south-west coastal line of ... been found to have elevated levels of background radioactivity due to high abundance of thorium.
Description : Chernobyl disaster is the result of pollution by – (1) Oil spill (2) Acid rain (3) Carbon dioxide (4) Radioactive waste
Last Answer : (4) Radioactive waste Explanation: The Chernobyl disaster was a catastrophic nuclear accident that occurred on 26 April 1986 at the Chernobyl Nuclear Power Plant in the city of Pripyat, then ... radioactive particles into the atmosphere, which spread over much of the western USSR and Europe.
Description : World's worst radioactive pollution was caused by nuclear reactor disaster which occured in (A) Arizona (U.S.A.) (B) Chernobyl (undivided U.S.S.R.) (C) Pennsylvania (U.S.A.) (D) Moscow (U.S.S.R.)
Last Answer : (B) Chernobyl (undivided U.S.S.R.)
Description : Ringelmann chart is used for the evaluation of __________ pollution. (A) Air (B) Water (C) Noise (D) Radioactive
Last Answer : (A) Air
Description : Which of the following is not a weightless pollutant? (A) SPM (B) Thermal pollution (D) Noise pollution (C) Radioactive rays
Last Answer : (A) SPM
Description : Which of the following is the leading cause of death and diseases worldwide? A. water pollution B. radioactive pollution C. air pollution D. soil pollution
Last Answer : A. water pollution
Description : Which of the following caused radioactive pollution along the coast of Kerala ? (1) Plutonium (2) Zinc (3) Thorium (4) Radium
Last Answer : Thorium
Description : Chernobyl disaster is the result of pollution by (1) Oil spill (2) Acid rain (3) Carbon dioxide (4) Radioactive waste
Last Answer : Radioactive waste
Description : What source and strength of radioactivity could cause mercury dental fillings to become radioactive?
Last Answer : answer:In general, things don't become radioactive simply by being exposed to radioactivity. (I hate to say never , because I don't know if an incredibly large radioactive burst ... think it is possible for dental fillings to become radioactive from exposure to (survivable) ionizing radiation.
Description : Which is the unit of activity of a radioactive source? -Do You Know?
Last Answer : answer:
Description : A frheshly prepared radioactive source of half life 2 hrs emits radiation of intensity which is 32 times the permissible safe value of intensity. Whic
Last Answer : A frheshly prepared radioactive source of half life 2 hrs emits radiation of intensity which is 32 times the ... B. 5hrs C. 10 hrs D. 32 hrs
Description : A freshely prepared radioactive source of half 2 hours emits radiations of intensity which is 64 times the permissible safe level. The minimum time af
Last Answer : A freshely prepared radioactive source of half 2 hours emits radiations of intensity which is 64 times the ... 12 hours C. 24 hours D. 48 hours
Description : Which is the unit of activity of a radioactive source?
Last Answer : – Becquerel
Last Answer : Becquerel
Description : Most of what we call background radiation comes from two sources. One is the naturally radioactive elements around us. What is the other source?
Last Answer : ANSWER: COSMIC RADIATION
Description : Mention some sources of indoor air pollution.
Last Answer : Molds and bacteria, carpets and upholstery, pollen, tobacco, pesticides and fumes from chemicals, dust mites, pets, animal hair and dead skin.
Description : Mention the main causes of air pollution.
Last Answer : a) Coal combustion b) Diesel combustion c) Petrol combustion d) Smoking of tobacco e) Waste incineration
Description : Mention two natural sources of water pollution in India. -Geography
Last Answer : (i) use of chemical fertilizers and pesticides (ii) Industrial effluents
Description : Mention the problems which the authorities faced while trying to provide pollution free environment to the people living in the cities. -SST 10th
Last Answer : (i) Factory owners and steam engine owners did not want to spend on technologies that would improve their machines. (ii) By the 1840s. a few towns such as Derby. Leeds and Manchester had laws to control ... Abatement Acts of 1547 and 1853. as they were called, did nor always work to clear the air.
Description : “Wind energy is absolutely pollution free, inexhaustible source of energy”. Discuss the statement. -Geography
Last Answer : (i) The mechanism of energy conversion from blowing wind is simple. The kinetic energy of wind through turbines is converted into electrical energy. (ii) The permanent wind systems-trade winds, ... generate energy as per their requirement and investment. A bright future is seen in this field.
Description : What is the main source of water pollution in unindustralized nations?
Last Answer : What is the answer ?
Description : Highest source of air pollution in the world is – (1) Automobiles (2) Industries (3) Household wastes (4) Aircraft
Last Answer : (1) Automobiles Explanation: According to the US Environmental Protection Agency (EPA), automobile emissions are the number one source of carbon monoxide, lead, nitrogen oxides, and volatile organic compounds released into the atmosphere that are primarily responsible for air pollution.
Description : The bacterium Bacillus thuringiensis is widely used in contemporary biology as (a) insecticide (b) agent for production of dairy products (c) source of industrial enzyme (d) indicator of water pollution
Last Answer : (a) insecticide
Description : Which of the following acts as a natural source of air pollution? (A) Forest fire (B) Deforestation (C) Volcanic eruption (D) None of these
Last Answer : (C) Volcanic eruption
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 a manmade source of air pollution? (A) Automobile exhaust (B) Forest fire (C) Bacterial action in soil and swamp areas (D) All (A), (B) and (C)
Last Answer : (A) Automobile exhaust
Description : The factor for the selection of pumping station site, is (A) Distance of the source of contamination or pollution (B) Height above the H.F.L. of the river (C) Future expansion (D) All the above
Last Answer : (D) All the above
Description : 10)The major source of noise pollution worldwide is due to – a)office equipment b)transport system c)sugar, textile and paper industries d)oil refineries and thermal powerplants
Last Answer : b)transport system
Description : The dominant source of pollution due to oxides of nitrogen (NOx) in urban areas is (A) Road trAns:port (B) Commercial Sector (C) Energy use in industry (D) Power plants
Last Answer : (B) Commercial Sector
Description : Which of the following is the largest source of water pollution in major rivers of India? (A) Untreated sewage (B) Agriculture run-off (C) Unregulated small scale industries (D) Religious practices
Last Answer : (A) Untreated sewage
Description : Inside rural homes, the source/sources of Nitrogen Oxide Pollution may be: (a) Unvented gas stoves (b) Wood stoves (c) Kerosene heaters Choose the correct code: (A) (a) and (b) only (B) (b) and (c) only (C) (b) only (D) (a), (b) and (c)
Last Answer : Answer: D
Description : The primary source of organic pollution in fresh water bodies is (A) run-off urban areas (B) run-off from agricultural forms (C) sewage effluents (D) industrial effluents
Last Answer : (C) sewage effluents
Description : Which of the following is not a source of pollution in soil? (A) Transport sector (B) Agriculture sector (C) Thermal power plants (D) Hydropower plants
Last Answer : (D) Hydropower plants
Description : In mega cities of India, the dominant source of air pollution is (A) transport sector (B) thermal power (C) municipal waste (D) commercial sector
Last Answer : (A) transport sector
Description : Highest source of air pollution in the world is (1) Automobiles (2) Industries (3) Household wastes (4) Aircraft
Last Answer : Automobiles
Description : Mention one important source used by historians in writing about the last 230 years of Indian history. -Science
Last Answer : The official records of the British administration.
Description : Name the hormones produced only during pregnancy in human female. Mention their source organ. -Biology
Last Answer : The hormones produced only during pregnancy in human female are human Chorionic Gonadotropin (hCG), human Placental Lactogen (hPL) and relaxin. The source of hCG and hPL — Placenta, and Relaxin — Ovary.
Description : Mention the advantages of Wilson current source.
Last Answer : (i) Provides high output resistance. (ii) Offers low sensitivity to transistor base currents.