Description : Assertion: Suspended particulate matter(SPM) is an important pollutant released by diesel vehicles. Reason : Catalytic convertes greatly reduce pollut
Last Answer : Assertion: Suspended particulate matter(SPM) is an important pollutant released by diesel vehicles. Reason : ... but reason is wrong D. Both are wrong
Description : In which year Air (Prevention and Control of Pollution) Act was amended to include noise as an air pollutant?
Last Answer : In which year Air (Prevention and Control of Pollution) Act was amended to include noise as an air pollutant? A. 1972 B. 1981 C. 1987 D. 1990
Last Answer : In which year Air (Prevention and Control of Pollution) Act was amended to include noise as an air pollutant ... . Noise C. Water D. None of the above
Description : Ringelmann chart is used for the evaluation of __________ pollution. (A) Air (B) Water (C) Noise (D) Radioactive
Last Answer : (A) Air
Description : How do industries create thermal and noise pollution ? -SST 10th
Last Answer : Hot water from factories when is allowed to flow into rivers and ponds is caused thermal pollution. Thermal pollution would affect on aquatic life greatly. Industrial and constructional ... machineries create unwanted sound of intolerable nature which impaired human ears and nervous breakdown.
Last Answer : Hot water from factories when is allowed to flow into rivers and ponds is caused thermal pollution.
Description : Electrostatic precipitator is used to control the pollution of – (1) air (2) water (3) noise (4) thermal
Last Answer : (1) air Explanation: An electrostatic precipitator (ESP), or electrostatic air cleaner is a particulate collection device that removes particles from a flowing gas (such as air) using the force of an ... particles from a flowing gas (such as air) using the force of an induced electrostatic charge.
Description : The most serious environmental pollution from a nuclear reactor is: w) radioactivity x) particulate formation y) thermal pollution z) noise pollution
Last Answer : ANSWER: Y -- THERMAL POLLUTION
Description : Electrostatic precipitator is used to control the pollution of (1) air (2) water (3) noise (4) thermal
Last Answer : air
Description : Ozone is (A) A primary pollutant (B) A secondary pollutant (C) Impervious to ultra-violet rays (D) Both (B) and (C)
Last Answer : (D) Both (B) and (C)
Description : Which of the following is the common pollutant emitted from metallurgical smelters, thermal power plant and cement plants? (A) NOx (B) Hg (C) SO2 (D) F
Last Answer : (C) SO2
Description : The main industrial source of emission of hydrogen sulphide air pollutant is (A) Petroleum refineries (B) Coal based thermal power plants (C) Pulp and paper plant (D) Metallurgical roasting & smelting plant
Last Answer : (B) Coal based thermal power plants
Description : The atomic number of a radioactive element is not changed, when it emits __________ rays. (A) α (B) β (C) γ (D) α & β
Last Answer : (C) γ
Description : Which of the following accounts for the maximum energy release in the nuclear fission process? (A) Kinetic energy of fission products (B) Radioactive decay of fission products (C) Instantaneous release of γ-rays (D) Kinetic energy of neutrons
Last Answer : (A) Kinetic energy of fission products
Description : β-rays emission in radioactive disintegration is always accompanied by the emission of (A) γ-rays (B) α-rays (C) Neutrons (D) None of these
Last Answer : (A) γ-rays
Description : Which of the following radioactive wastes emits all α, β & γ rays and hence is the most hazardous of all radioactive emitters? (A) I-131 (B) Sr-90 (C) Au-198 (D) Ra-226
Last Answer : (D) Ra-226
Description : Define the following terms: environment, pollution, pollutant.
Last Answer : The natural world that surrounds a living thing is called environment. The environment affects the growth and development of living things. When some unwanted and harmful thing appears in an environment we ... noise' air' water and Land. Anything which harms the environment is called a pollutant.
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 : Forget about the price. Would you want to be launched into space for 10-15 minutes and be weightless? What a rush!
Last Answer : Nope. I hear a lot of people throw up. No thanks.
Description : Is there a certain reason why mosquitos are so weightless?
Last Answer : I think you just stated it. Their weightlessness is part of their success strategy. If they were heavy, you’d feel it and brush them off. Also their saliva contains an anesthetic so we don’t feel the bite. Clever little buggers.
Description : Whats weightless, visible to the naked eye, and when you put it in a barrel of water it will make the barrel lighter in weight.? -Riddles
Last Answer : A hole!!!!!!!
Description : I am weightless, but you can see me. Put me in a bucket, and I'll make it lighter. What am I? -Riddles
Last Answer : A hole.
Description : Which is a hypothetical string theory weightless particle? -Technology
Last Answer : In theories of quantum gravity, the graviton is the hypothetical quantum of gravity, an elementary particle that mediates the force of gravity. ... In string theory, believed to be a consistent theory of quantum gravity, the graviton is a massless state of a fundamental string.
Description : The work done by a weightless piston in causing an expansing `Delta V` (at constant temperature), when the opposing pressure P is variable, is given b
Last Answer : The work done by a weightless piston in causing an expansing `Delta V` (at constant temperature), when the opposing ... 0 C. `W = -P Delta V` D. None
Description : A balloon filled with helium rises in air because – (1) air exerts an upward force on the balloon (2) the balloon is weightless (3) helium is less dense than air (4) helium pushes down on the air below the balloon
Last Answer : (3) helium is less dense than air Explanation: A gas balloon is any balloon that stays aloft due to being filled with a gas less dense than air or lighter than air (such as helium ... balloons) as the dominant form of airship. as balloons remained popular throughout the age before powered flight.
Description : A balloon filled with helium rises in air because (1) air exerts an upward force on the balloon (2) the balloon is weightless (3) helium is less dense than air (4) helium pushes down on the air below the balloon
Last Answer : helium is less dense than air
Description : Major gaseous pollutant of the thermal power station is – (1) H2S (2) NH3 (3) NO2 (4) SO2
Last Answer : (4) SO2 Explanation: A flue-gas stack is a type of chimney, a vertical pipe, channel or similar structure through which combustion product gases called flue gases are exhausted to the outside air ... CO2) and water vapor as well as nitrogen and excess oxygen remaining from the intake combustion air.
Description : The major source of the pollutant gas, carbon mono-oxide (CO), in urban areas is (A) Thermal power sector (B) Transport sector (C) Industrial sector (D) Domestic sector
Last Answer : (B) Transport sector
Description : Major gaseous pollutant of the thermal power station is (1) H2 S (2) NH3 (3) NO2 (4) SO2
Last Answer : SO2
Description : Which of the following is the most penetrating power of radioactive rays ?
Last Answer : Gamma ( γ) rays have the highest penetrating power among radioactive rays .
Description : What are the rays emitted from radioactive material ? What are their names ?
Last Answer : Three types of rays are emitted from the nucleus of radioactive material. Their names are ফাalpha ( α) ray , beta ( ß) ray and gamma ( γ) ray.
Description : The rays are given off by a radioactive element from A)Nucleus B)Valence electrons C)All the orbits D)Outer orbit
Last Answer : The rays are given off by a radioactive element from A)Nucleus B)Valence electrons C)All the orbits ... electrons C. all the orbits D. outer orbit
Description : The depletion of Ozone layer is mainly due to – (1) Volcanic eruptions (2) Aviation fuels (3) Radioactive rays (4) Chlorofluorocarbons
Last Answer : (4) Chlorofluorocarbons Explanation: Chlorofluorocarbons (CFCs) and other halogenated ozone depleting substances (ODS) are mainly responsible for man-made chemical ozone depletion. Chloroiluorocarbon (CFC) is ... , chlorine, and fluorine, produced as a volatile derivative of methane and ethane.
Description : Beta rays emitted by a radioactive material are – (1) The electrons orbiting around the nucleus (2) Charged particles emitted by nucleus (3) Neutral particles (4) Electromagnetic radiations
Last Answer : (2) Charged particles emitted by nucleus Explanation: A beta ray is a high-energy, highspeed electron (negatively charged) or positron (positively charged) emitted in the radioactive decay of an atomic nucleus, such as a potassium40 nucleus, in the process of beta decay.
Description : What do radioactive substances emit? (1) Radio waves (2) Infrared waves (3) Ultraviolet waves (4) α, β and γ rays
Last Answer : (4) α, β and γ rays Explanation: Of the three main types of radiation given off during radioactive decay, two are particles and one is energy; scientists call them alpha, beta and gamma after the first three letters of the Greek alphabet.
Description : What are Alpha rays emitted from a radioactive substance?
Last Answer : Helium nuclear
Description : In radioactive decay, the emission of an electron is characteristic of: w) Alpha decay x) Beta decay y) Gamma decay z) X-rays
Last Answer : ANSWER: X -- BETA DECAY
Description : The depletion of Ozone layer is mainly due to (1) Volcanic eruptions (2) Aviation fuels (3) Radioactive rays (4) Chlorofluorocarbons
Last Answer : Chlorofluorocarbons
Description : Beta rays emitted by a radioactive material are (1) The electrons orbiting around the nucleus (2) Charged particles emitted by nucleus (3) Neutral particles (4) Electromagnetic radiations
Last Answer : Charged particles emitted by nucleus
Description : Which is not correct about harmful effect of SPM of 2.5 `mu`m or less
Last Answer : Which is not correct about harmful effect of SPM of 2.5 `mu`m or less A. It can directly ... inhaled into lungs D. It can cause respiratory problems.
Description : What is SPM causes
Last Answer : SPM causes A. Respiratory diseases B. Bone deformities C. Skin diseases D. All the above
Description : Which one of the following cannot be controlled by a 3 way catalytic converter? (a) HC emission (b) CO emission (c) NOx emission (d) SPM emission
Last Answer : Ans :d
Description : If the claim does not exceed Rs. 1,00,000, the claimant should be asked to submit an application duly completed to the authorities mentioned below who are competent to sanction claims without production of legal ... director, Director GPO is Rs 75000/- d) CPMG/PMG Rs 10000/- e) All the above
Last Answer : e) All the above
Description : In a coal fired power plant electrostatic precipitators are installed to control emission of (a) NOX (b) SPM (c) CO (d) SO2
Last Answer : (b) SPM
Description : When a remittance is made to a SO through a special carrier, in which document a remark should be written for the information of SPM as to how the money was sent a) In SO daily account b) In SO Slip c) In HO summary d) In treasurer cash book
Last Answer : b) In SO Slip
Description : Accounts and branch office bags received in mail bags should be transferred to a) The Sorting PA b) The sub account PA c) The PM/SPM d) The treasurer
Last Answer : d) The treasurer
Description : The book of information is maintained in ______ . The book should be kept up to date and retained by _____ in his personal custody. a) Each Head office, Postmaster b) Each branch officer, BPM c) Each HO and SO, PM, SPM d) None of these
Last Answer : c) Each HO and SO, PM, SPM
Description : Preservation period of ED SPM leave form APP-45 is a) Two years b) Three years b) One year d) Six month
Last Answer : b) Three years
Description : Indent of furniture may be submitted by_____. Only after personal inspection by him or by ________, of the office for which the articles are required . a) Head postmaster, SPM b) Superintendent, Inspector c) Inspector, SPM d) None of these
Last Answer : b) Superintendent, Inspector
Description : If any correction is made in the total of entries in regd. list a) It should be attested by the initials Sorting Assistant concerned b) It should be attested by the PM/SPM or Head sorting assistant c) It should be destroyed and a fresh one prepared d) It can be sent with corrections
Last Answer : c) It should be destroyed and a fresh one prepared