Description : What refers to the heating of the earth’s atmosphere not caused by direct sunlight but by infrared light radiated by the surface and absorbed mainly by atmospheric carbon dioxide? A. Greenhouse effect B. Global warming C. Thermal rise effect D. Ozone effect
Last Answer : Greenhouse effect
Description : Which one of the following Greenhouse gases has the greatest warming effect? A. Carbon dioxide B. Methane C. Carbon monoxide D. Helium
Last Answer : ANSWER: A
Description : Which of the following gases cause global warming? (A) Carbon monoxide (B) Carbon dioxide (C) Nitrogen (D) Ozone
Last Answer : (B) Carbon dioxide
Description : Chemoautotrophic bacteria obtain the energy they need from a. The Reactions Of Photosynthesis. b. Sunlight. c. Carbon Dioxide In The Atmosphere. d. Inorganic Chemicals.
Last Answer : b. Sunlight.
Description : Trees play important roles in preventing global warming blank absorbing carbon dioxide and pumping water into the atmosphere?
Last Answer : Trees play an important role in global warming by absorbing carbon dioxide and pumping oxygen into the atmosphere.
Description : The effect of increase in carbon dioxide level of the atmosphere and its profound effect on our climate is called the (A) Catalytic conversion (B) Green house effect (C) Global warming (D) Both (B) and (C)
Last Answer : (D) Both (B) and (C)
Description : Pick out the wrong statement pertaining to 'green house' for the plants. (A) 'Green house' (made of glass) allows visible sunlight (i.e., short wavelength solar radiation like ultra-violet rays) ... ' thereby warming up the earth's surface (D) 'Green house' is colder than the outside atmosphere
Last Answer : (D) 'Green house' is colder than the outside atmosphere
Description : Look at the following gases: 1. Carbon dioxide 2. Helium 3. Nitrogen 4. Oxygen The two most abundant gases in the atmosphere are: (a) 1 and 3 (b) 2 and 4 (c) 3 and 4 (d) 1 and 4
Last Answer : Ans:(c)
Description : The main cause of global climatic change is – (1) increase in the content of carbon dioxide in the atmosphere (2) emissions of industrial gases (3) adding of dust (4) changes in plant cover
Last Answer : (1) increase in the content of carbon dioxide in the atmosphere Explanation: Our ever increasing addiction to electricity from coal burning power plants eleases enormous amounts of carbon dioxide ... sources, we are highly dependent on burning coal for our personal and commercial electrical supply.
Description : The highest volume of gases in lower atmosphere is comprised of - (1) Hydrogen (2) Carbon dioxide (3) Oxygen (4) Nitrogen
Last Answer : (4) Nitrogen Explanation: There are a number of atmospheric gases which make up air. In the lower atmosphere or troposphere, the main gases are nitrogen and oxygen, which make up 78% and 21% of the volume of air respectively. The remaining 1% of the atmospheric gases is made up of trace gases.
Description : Oceans act as sinks for atmospheric gases including carbon dioxide whose concentration in the atmosphere is increased by the (A) Forestation (B) Rain (C) Green house effect (D) Vegetation
Last Answer : (C) Green house effect
Description : Here is an interesting question. Which might be the major factor responsible for the rise in carbon dioxide ("greenhouse gases") in our atmosphere?? (There is not likely to be much consensus as to the 'correct' answer. Think critically and objectively about this issue.)
Last Answer : The major source of carbon dioxide is likely coming from volcanoes, vents in our earth's crust, the oceans, and weathering of the earth's crust.
Description : While many different gases are found in the atmosphere, a number do NOT contribute significantly to solar heating of the atmosphere. Which TWO of the following gases do NOT absorb much heat? w) carbon dioxide x) nitrogen y) water vapor z) oxygen
Last Answer : ANSWER: X and Z -- NITROGEN and OXYGEN
Description : Which one of the following green house gases has the shortest residence time in the atmosphere? (A) Chlorofluorocarbon (B) Carbon dioxide (C) Methane (D) Nitrous oxide
Last Answer : (C) Methane
Description : The highest volume of gases in lower atmosphere is comprised of (1) Hydrogen (2) Carbon dioxide (3) Oxygen (4) Nitrogen
Last Answer : Nitrogen
Description : The main cause of global climatic change is (1) increase in the content of carbon dioxide in the atmosphere (2) emissions of industrial gases (3) adding of dust (4) changes in plant cover
Last Answer : increase in the content of carbon dioxide in the atmosphere
Last Answer : photosynthesis or photophosphorylation.
Description : In the atmosphere, which of the following gases account for about 99.0 % per cent by volume?
Last Answer : Ans. Nitrogen, Oxygen, Carbon dioxide
Description : Green house gases blanket/block the infrared radiation from earth's surface to the atmosphere leading to its progressive warming up. Which of the following gases does not exhibit green house effect? (A) CO2 (B) H2 (C) SO3 (D) N2
Last Answer : (C) SO3
Description : Pick out the wrong statement. (A) Catalytic converter is fitted in automobiles to reduce carbon monoxide concentration in exhaust emissions (B) Inhalation of pollutant carbon monoxide results ... D) Decomposition of plants containing chlorophyll is a natural source of carbon monoxide in atmosphere
Last Answer : (C) Sulphur dioxide is the main pollutant emitted from the exhaust of petrol driven automobiles
Description : The major product obtained on interaction of phenol with sodium hydroxide and carbon dioxide is :
Last Answer : The major product obtained on interaction of phenol with sodium hydroxide and carbon dioxide is : A ... acid C. phthalic acid D. benzoic acid
Description : The autotrophic mode of nutrition requires (i) carbon dioxide and water (ii) chlorophyll (iii) sunlight (iv) all of the above -Biology
Last Answer : Autotrophic nutrition is the mode of nutrition in which green plants prepare their own food by the process of photosynthesis. It requires carbon dioxide, water, sunlight and chlorophyll. Hence, option (iv) is correct.
Description : What green molecule that enables plants to turn water carbon dioxide and sunlight into sugars?
Last Answer : Chlorophyll
Description : Why Plants use carbon dioxide water and sunlight to produce what?
Last Answer : Need answer
Description : Which of the following provides energy for photosynthesis? (1) Water (2) Sunlight (3) Chlorophyll (4) Carbon dioxide
Last Answer : (2) Sunlight Explanation: Photosynthesis is a process used by plants and other organisms to convert the light energy captured from the sun into chemical energy that can be used to fuel the ... is therefore: Carbon dioxide + electron donor + light energy -4 carbohydrate + oxidized electron donor.
Description : Ultraviolet radiations from sunlight causes a reaction that produces (a) fluorides (b) carbon monoxide (c) sulphur dioxide (d) ozone.
Last Answer : (d) ozone.
Description : Fruit stored in a cold chamber exhibit longer storage life because – a. exposure to sunlight is prevented b. the concentration of carbon dioxide in the environment is increased c. the rate of respiration is decreased d. there is increase in humidity
Last Answer : c. the rate of respiration is decreased
Last Answer : Sunlight
Description : Pick up the incorrect statement from the following: A. The process of decomposing the organic matter under controlled anaerobic conditions, is called sludge digestion B. Sludge digestion is carried ... contain 75% carbon dioxide D. The gases produced in sludge digestion process, contain 75% methane
Last Answer : ANS: C
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 : Pick out the correct statement. (A) Deforestation helps in controlling the green house effect (B) Global warming is detrimental for increase in food productivity and may cause flood and cyclone ( ... natural source of production of SO2 & H2S pollutant (D) Sulphur dioxide causes death by asphyxiation
Last Answer : (B) Global warming is detrimental for increase in food productivity and may cause flood and cyclone
Description : Global warming is mainly due to accumulation of – (1) Oxides of nitrogen (2) Oxides of sulphur (3) Carbon dioxide (4) Carbon monoxide
Last Answer : (3) Carbon dioxide Explanation: Global Warming refers to average increase in the earth's temperature due to increase in pollution which results in greenhouse effect which in turn leads to climate ... dioxide accumulate into the atmosphere and trap heat that would normally exit into the outer space.
Description : Greenhouse gas having largest contribution to global warming A) Carbon dioxide (60%) (B) Nitrous oxide (5%) (C) Methane (15%) (D) CFC
Last Answer : A) Carbon dioxide (60%)
Description : The gas predominantly responsible for global warming is (1) Carbon dioxide (2) Carbon monoxide (3) Nitrous oxide (4) Nitrogen peroxide
Last Answer : (1) Carbon dioxide
Description : Increase in temperature due to excess of carbon dioxide in air which traps heat energy is known as _______ . a) global warming b)soot c)ash d)acid rain
Last Answer : a) global warming
Description : Global warming is mainly due to accumulation of (1) Oxides of nitrogen (2) Oxides of sulphur (3) Carbon dioxide (4) Carbon monoxide
Last Answer : Carbon dioxide
Description : What process decreases the removal of carbon dioxide from the atmosphere?
Last Answer : There are several that remove carbon dioxidephotosynthesisthe dissolving of the CO2 into ocean waterformation of coral and crustacean shellprecipitation as carbonate compounds.Processes that ... first list: deforestationwarmer oceansdesertificationconversion of forest and farmland to urban areas.
Description : If an interaction effect is confounded with all the replicates of the treatment
Last Answer : Ans. Complete/total confounding
Description : The radiation in the sunlight that gives us the feeling of hotness is
Last Answer : Ans. Infra-red
Description : Mud houses are cooler in summers and wanner in winters as compared to brick houses because (1) mud is a good conductor (2) mud is a bad conductor (3) mud is a poor insulator (4) evaporation of water causes cooling in summers and sunlight coming through holes causes warming in winters
Last Answer : (2) mud is a bad conductor Explanation: The houses made of mud and thatched roofs are cool in summer and warm in winter as the thatched roof contains large amount of trapped air and also mud is ... . In summer, the outside heat cannot enter the house and in winter, inside heat cannot flow outside.
Description : Mud houses are cooler in summers and warmer in winters as compared to brick houses because (1) mud is a good conductor (2) mud is a bad conductor (3) mud is a poor insulator (4) evaporation of water causes cooling in summers and sunlight coming through holes causes warming in winters
Last Answer : mud is a bad conductor
Description : Chief green house gas responsible for global warming
Last Answer : Ans. CO2 (50%)
Description : Phenomenon of warming of eastern pacific
Last Answer : Ans. EI nino
Description : Why are nitrous oxide and carbon dioxide called greenhouse gases?