Description : Ultraviolet radiation in the stratosphere is absorbed by – (1) SO2 (2) Ozone (3) Oxygen (4) Argon
Last Answer : (2) Ozone Explanation: The ozone layer of Earth's stratosphere absorbs most of the Sun's ultraviolet radiation. It absorbs 97 to 99 percent of the Sun's medium-frequency ultravi-olet light ( ... 200 nm to 315 nm wavelength), which otherwise would potentially damage exposed life forms on the earth.
Description : In which of the following layer of atmosphere the absorption and scattering of the solar ultraviolet radiation takes place? (1) Troposphere (2) Stratosphere (3) Mesosphere (4) Thermosphere
Last Answer : Stratosphere
Description : Ozone layer is formed due to reactions of : (1) oxygen and ultraviolet rays (2) carbon dioxide and layers of atmosphere (3) cosmic rays and layers of atmosphere (4) infrared rays and ultraviolet rays
Last Answer : oxygen and ultraviolet rays
Description : Ozone layer in the upper parts of the atmosphere serves as a protective shield against harmful (1) solar ultraviolet radiation (2) solar infrared radiation (3) CO2 in the air (4) SO2 in the air
Last Answer : (1) solar ultraviolet radiation Explanation: Ozone layer serves as a protective shield against harmful solar ultraviolet radiation.
Last Answer : solar ultraviolet radiation
Description : Which layer of the earth’s atmosphere contains the ozone layer ? (1) Troposphere (2) Mesosphere (3) Ionosphere (4) Stratosphere
Description : Most of the ozone in the earth’s atmosphere is found in the : (1) Troposphere (2) Stratosphere (3) Mesophere (4) Thermosphere
Description : In the atmosphere ultraviolet rays are absorbed by – (1) Oxygen (2) Nitrogen (3) Ozone (4) Helium
Last Answer : (1) Oxygen Explanation: Most of the ultraviolet radiation in sunlight is absorbed by oxygen in Earth's atmosphere, which forms the ozone layer of the lower stratosphere. UV light is found ... and causes many substances to glow or fluoresce. Most ultraviolet is classified as non-ionizing radiation.
Description : In the atmosphere ultraviolet rays are absorbed by (1) Oxygen (2) Nitrogen (3) Ozone (4) Helium
Last Answer : Oxygen
Description : Very small amount of air pollutants are present in stratosphere also; though most of the atmospheric pollutants are present in the troposphere. Which of the following atmospheric pollutants does not cause the ozone layer depletion ... rate? (A) CO (B) SO2 (C) NOx (D) CFC (chloro fluoro carbons)
Last Answer : (A) CO
Description : Ultraviolet radiation striking the earth is due to the depletion of – (1) carbon monoxide (2) carbon dioxide (3) ozone (4) oxygen
Last Answer : (3) ozone Explanation: Ozone is a powerful oxidant (far more so than dioxygen) and has many industrial and consumer applications related to oxidation. This same high oxidizing potential, however, ... 100 parts per billion. This makes ozone a potent respiratory hazard and pollutant near ground level.
Description : Ultraviolet radiation striking the earth is due to the depletion of (1) carbon monoxide (2) carbon dioxide (3) ozone (4) oxygen
Last Answer : ozone
Description : Which one of the following is a greenhouse gas? (1) Oxygen (2) Nitrogen (3) Carbon-di-Oxide (4) Ozone
Last Answer : Carbon-di-Oxide
Description : Ozone-hole in the atmosphere is largely caused by the presence of (1) Oxygen (2) Hydrogen (3) Chloro-floro-carbon (4) Radio-active waste
Last Answer : Chloro-floro-carbon
Last Answer : (2) Stratosphere Explanation: Solar ultraviolet radiation undergoes absorption and scattering as it passes through the stratospheric layer of the earth's atmosphere. The ozone layer, a region of Earth's ... result, no UV radiation at wavelengths shorter than 290 nm reaches the surface of the earth.
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?
Description : In the stratosphere, why does temperature increase with increasing height? (a) Conduction. (b) Convection. (c) Greater absorption of ultraviolet radiation at the top of the strato- sphere. (d ... you go up through the strato- sphere, thus the ideal gas law requires temperature to increase too.
Last Answer : Greater absorption of ultraviolet radiation at the top of the strato- sphere.
Description : Which of the following is the lowest atmospheric layer ? (1) Lithosphere (2) Stratosphere (3) Troposphere (4) Hydrosphere
Last Answer : Troposphere
Description : The layer where the decrease in temperature with increasing altitude is totally absent is (1) Troposphere (2) Ionosphere (3) Stratosphere (4) Mesosphere
Description : A level of atmosphere which is composed partly of electrons and positive ions is called (1) Troposphere (2) Ionosphere (3) Stratosphere (4) Mesosphere
Last Answer : Ionosphere
Description : Which of the following is the uppermost layer of the atmosphere? (1) Stratosphere (2) Mesosphere (3) Ionosphere (4) Exosphere
Last Answer : Exosphere
Description : Which is the warmest layer of the atmosphere? (1) Thermosphere (2) Troposphere (3) Stratosphere (4) Mesosphere
Last Answer : Thermosphere
Description : All vital atmospheric processes leading to various climatic and weather conditions take place in the : (1) Stratosphere (2) Troposphere (3) Ionosphere (4) Exosphere
Description : Choose the correct option which represents the arrangement of atmospheric layers. (1) Ionosphere, Ecosphere, Mesosphere, Stratosphere, Troposphere (2) Ecosphere, Troposphere, Ionosphere, ... ) Mesosphere, Ionosphere. Ecosphere, Troposphere, Stratosphare (4) Troposphare, Ionosphere, Ecosphere
Last Answer : Troposphare, Ionosphere, Ecosphere
Description : The layer of atmosphere close to the earth’s surface is called (1) Exosphere (2) Troposphere (3) Stratosphere (4) Ionosphere
Description : The atmospheric layer farthest from the Earth’s surface is known as (1) Stratosphere (2)Exosphere (3) Ionosphere (4)Mesosphere
Description : The layer of the atmosphere in which Radio Waves are reflected back is called ; (1) Ionosphere (2) Troposphere (3) Stratosphere(4) Exosphere
Description : Which one of the four regions above the earth has smallest height (km.) ? (1) Stratosphere (2) Mesosphere (3) Thermosphere (4) Troposphere
Description : Density of the earth’s atmosphere is highest in the (1) Troposphere (2) Stratosphere (3) Mesosphere (4) Ionosphere
Description : The zone of Earth’s atmosphere immediately above its surface up to a height of about 16 kms above equator and 8 kms over the poles is known as : (1) Mesosphere (2) Thermosphere (3) Troposphere (4) Stratosphere
Description : The lowest layer of the atmosphere is : (1) Stratosphere (2) Thermosphere (3) Troposphere (4) Mesosphere
Description : Which is the lowest layer of the atmosphere? (1) Troposphere (2) Stratosphere (3) Mesosphere (4) Thermosphere
Description : Daily weather changes in the atmosphere are associated with (1) Troposphere (2) Mesosphere (3) Ionosphere (4) Stratosphere
Description : Where does most of the weather phenomena take place? (1) Ionosphere (2)Troposphere (3) Stratosphere (4)Tropopause
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 : Ozone layer prevents ------- radiation from entering the atmosphere? A. Infra-red B. Ultraviolet (Answer) C. X-rays
Last Answer : B. Ultraviolet (Answer)
Description : A considerable part of the harmful ultraviolet radiation of the sum does not reach the earth surface, because of the fact that, there is a layer of __________ high above earth's atmosphere, which absorbs it. (A) Hydrogen (B) Carbon dioxide (C) Ozone (D) None of these
Last Answer : (C) Ozone
Description : To what does the atmosphere's "greenhouse effect" refer to? w) the fact that ozone reflects ultraviolet radiation x) the fact that air prevents heat from leaving the earth y) the fact that clouds prevent sunlight from reaching the earth z) the fact that green plants use sunlight to produce food
Last Answer : ANSWER: X -- THE FACT THAT AIR PREVENTS HEAT FROM LEAVING THE EARTH
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 : In stratosphere, which of the following element acts as a catalyst in degradation of ozone a release of molecular oxygen ? (1) Carbon (2) Cl (3) Fe (4) Oxygen
Last Answer : (2) Cl
Description : The presence of ozone in the stratosphere is responsible for (1) increasing the average global temperature in recent years (2) higher rate of photosynthesis (3) checking the penetration of ultra-violet rays to the earth (4) supplying oxygen for people travelling in jets
Last Answer : checking the penetration of ultra-violet rays to the earth
Description : The Montreal Protocol 1987 refers to (1) saving the Bio-diversity of our planet (2) signing of an accord on the peaceful uses of atmoic energy (3) signing of an accord on keeping the antarctica as a nuclear free zone (4) saving the ozone layer from destruction by reducting the use of CFCs
Last Answer : saving the ozone layer from destruction by reducting the use of CFCs
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
Last Answer : (1) oxygen and ultraviolet rays Explanation: Ozone in the Earth's stratosphere is created by ultraviolet light striking ordinary oxygen molecules containing two oxygen atoms (O2), splitting them into ... (atomic oxygen). The atomic oxygen then combines with unbroken O2 to create ozone (O3).
Description : (1) the action of ultraviolet rays on oxygen Explanation: The majority of tropospheric ozone formation occurs when nitrogen oxides (NOx), carbon monoxide (CO ) and volatile organic compounds (VOCs), such as xylene, ... violet rays. NOx, CO, and VOCs are called ozone precursors. CO + 2O2 + CO2 + O3
Last Answer : Water is not effective in extinguishing a fire caused by petrol because - (1) the flame is too hot for water to cool it down (2) water and petrol react chemically (3) water and petrol are ... (4) water and petrol are immiscible with each other and petrol which forms the upper layer continues to burn
Description : In upper layer of atmosphere ozone is formed by (1) the action of ultraviolet rays on oxygen (2) the combination of oxygen molecules (3) subjecting oxygen to high pressure (4) the action of nitrogen on oxygen in atmosphere
Last Answer : the action of ultraviolet rays on oxygen
Description : Atmospheric temperature increasing at the higher altitudes is called (1) Radiation (2) Inversion (3) Conduction (4) Convection
Last Answer : Inversion
Description : Airmass near to the earth’s surface is warmer because it (1) radiates heat (2) contains dust particles (3) is warmed by terrestrial radiation (4) is far from the sun
Last Answer : is warmed by terrestrial radiation
Description : The solar radiation coming to Earth is called (1) Radiant energy (2) Insolation (3) Sunshine (4) Terrestrial radiation
Last Answer : Insolation
Description : Land and sea-breezes occur due to : (1) Conduction (2) Convection (3) Radiation (4) Tides
Last Answer : Convection