Description : Why normal rain is slightly acidic? A. due to presence of dust in air B. carbon dioxide and water in clouds react to form carbonic acid (Answer) C. Ozone depletion D. All of these
Last Answer : B. carbon dioxide and water in clouds react to form carbonic acid (Answer)
Description : Increasing high skin cancer and high mutation rate are a) O3 depletion b) Acid rain c) CO pollution d) CO2 Pollution.
Last Answer : a) O3 depletion
Description : Depletion of ozone layer in the outer atmosphere may cause A. Lung cancer B. Skin cancer C. Bronchitis D. Heart disorder
Last Answer : ANS: B
Description : Depletion of ozone layer in the atmosphere causes cancer of a) skin b)stomach c)blood d)lungs
Last Answer : a) skin
Description : Write short notes on any two of the following: a) Acid rain b) Green house effect c) Ozone depletion
Last Answer : Answers: a) Acid rain: The problem begins with the production of sulfur dioxide and nitrogen oxides from the burning of fossil fuels, such as coal, natural gas, and oil, and from certain ... and an increase in atmospheric carbon dioxide (Global Warming) due to the decrease in plants and plankton.
Description : Lung cancer & DNA breakage are the major ill effects of excessive ozone exposure to human beings. Ozone layer depletion in the atmosphere is mainly caused by the presence of (A) CO2 (B) SO2 (C) Hydrocarbons (D) CFC (chloro fluoro carbon)
Last Answer : (D) CFC (chloro fluoro carbon)
Description : Rio Summit is associated with – (1) Convention on Biological Diversity (2) Green house gases (3) Ozone depletion (4) Wet lands
Last Answer : (1) Convention on Biological Diversity Explanation: The United Nations Conference on Environment and Development (UNCED), otherwise known as the Earth Summit or Rio Summit, was held in Rio de Janeiro, ... for signature at the Rio Summiton 5 June 1992 and entered into force on 29 December 1993.
Description : Rio Summit is associated with (1) Convention on Biological Diversity (2) Green house gases (3) Ozone depletion (4) Wet lands
Last Answer : Convention on Biological Diversity
Description : Which factor is not responsible for Global ecological crisis? (a) Depletion of resources for satisfying the greed of few individuals. (b) Accumulation of resources in few hands. (c) Sustainable economic development. (d) Indiscriminate exploitation of resources.
Last Answer : (c) Sustainable economic development.
Description : Probiotics are (a) cancer inducing microbes (b) new kind of food allergens (c) live microbial food supplement (d) safe antibiotics.
Last Answer : (c) live microbial food supplement
Description : In atopy, the allergens are absorbed via the skin A. True B. False
Last Answer : Ans: A
Description : In the case of malignant melanoma occurring intra orally, which of the following is true: a. Uncommon on the palate when occurs intra orally. b. Should not biopsied, as this will increase metasis ... incidence of oral melanoma is the same as those on the skin. e. Commonly occurs intra orally.
Last Answer : c. The 5 year survival rate is 20%.
Description : In the case of malignant melanoma occurring intra orally, which of the following is true: A. Uncommon on the palate when occurs intra orally B. Should not biopsied, as this will increase metasis ... The incidence of oral melanoma is the same as those on the skin E. Commonly occurs intra orally
Last Answer : C. The 5 years survival rate is 20%
Description : Name some common allergens associated with type-I hypersensitivity ?
Last Answer : Penicillin, sulfonamide, eggs, milk, dust mites, animal air, vaccines etc.
Description : Which one of the following allergens is NOT associated with contact dermatitis? a. Foods b. Cosmetics c. Poison ivy d. Jewlery
Last Answer : a. Foods
Description : Development of malignant melanoma is associated with which of the following risk factors? a) Individuals with a history of severe sunburn Ultraviolet rays are strongly suspected as the etiology ... the southwestern United States appear to have a higher incidence of development of malignant melanoma.
Last Answer : a) Individuals with a history of severe sunburn Ultraviolet rays are strongly suspected as the etiology of malignant melanoma.
Description : An important finding in Refsum’s disease is (A) Accumulation of ceramide trihexoside in the kidney (B) Accumulation of phytanic acid in the blood and tissues (C) Accumulation of gangliosides in brain and spleen (D) Skin eruptions
Last Answer : Answer : B
Description : An important feature of Zellweger ’s syndrome is (A) Hypoglycemia (B) Accumulation of phytanic acid in tissues (C) Skin eruptions (D) Accumulation of C26-C38 polyenoic acid in brain tissues
Last Answer : Answer : D
Description : Basidiospores are considered to be a major source of ------? A. airborne allergens (Answer) B. water borne allergens C. animal faeces D. bio-weapon
Last Answer : A. airborne allergens (Answer)
Description : What is ozone depletion?
Last Answer : Ozone depletion refers to the thinning of the Earth's ozone layer, primarily in the stratosphere, caused by the release of certain chemicals, such as chlorofluorocarbons (CFCs), which can lead to increased exposure to harmful ultraviolet radiation from the sun.
Description : Mirage is due to (a) Unequal heating of different parts of the atmosphere (b) Magnetic disturbances in the atmosphere (c) Depletion of ozone layer in the atmosphere (d) Equal heating of different parts of the atmosphere
Last Answer : Ans:(a)
Description : The depletion of ozone layer is caused by?
Last Answer : Chlorofluorocarbon (CFC)
Description : What is the effect ozone depletion?
Last Answer : a) Thinning of the ozone layer allows high levels of UV radiations to reach the earth causing mutations in organisms. b) In humans, the incidence of skin cancer and cataract increases. c) ... e) In the atmosphere, it affects the natural balance of gases, particularly affecting the carbon cycle.
Description : What is meant by ozone depletion?
Last Answer : The reduction of the ozone in the stratosphere is called ozone depletion.
Description : Effect of ozone layer depletion?
Last Answer : It causes harmful activities like skin cancer, cataracts. Mainlychildren are worst affected. It is also harmful for eyes.
Description : Do you think there is global warming or some geographical regions are more affected by ozone depletion than others?
Last Answer : Global warming and ozone depletion both are different issues of global concerns. Global warming are due to release of green house gases and dealt with Kyoto protocol but ozone depletion are due to ... carbon and dealt with Montréal protocol. I think there is no any relation with each other
Description : Which is correct about statements X and Y statement X. DDT shows biological magnification Statement Y : UV radiations causes ozone depletion .
Last Answer : Which is correct about statements X and Y statement X. DDT shows biological magnification Statement Y : UV ... D. X is not correct, Y is correct.
Description : Depletion of ozone is mainly due to
Last Answer : Depletion of ozone is mainly due to A. `CO_(2)` B. CFC C. `SO_(2)` D. `CH_(4)`.
Description : Assertion (A) : Presently, the global atmosphere is warming up. Reason (R): The depletion of stratospheric ozone layer has resulted in increase in ult
Last Answer : Assertion (A) : Presently, the global atmosphere is warming up. Reason (R): The depletion of ... true but reason is wrong D. Both are wrong
Description : The depletion of ozone layer is due to:
Last Answer : The depletion of ozone layer is due to: A. Oxides of nitrogen B. Oxides of carbon C. Oxides of sulphur D. None of the above
Description : Nitrogen oxides released in the stratosphere causes ozone depletion due to
Last Answer : Nitrogen oxides released in the stratosphere causes ozone depletion due to A. catalysing conversion of ... . reacting with ozone D. All the above
Description : The gas, responsible for ozone depletion
Last Answer : Ans. CF2Cl2
Description : Of the following man-made disasters, which is socially induced? (1) Debris Avalanche (2) Salt Water Intrusion (3) Arson (4) Ozone depletion
Last Answer : (3) Arson Explanation: Arson is the crime of intentionally and maliciously setting lire to buildings, wild land areas, vehicles or other property with the intent to cause damage. Distinct from ... and natural wildfires, it is considered to be a man-made disaster which is socially induced.
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 : The depletion in Ozone layer is caused by - (1) Nitrous oxide (2) Carbon dioxide (3) Chlorofluorocarbons (4) Methane
Last Answer : (3) Chlorofluorocarbons Explanation: Chlorofluorocarbons (CFCs), also known as Freon, cause the breakdown of the ozone layer that protects the earth from the sun's ultraviolet (UV) radiation. In the ... depletion in the upper atmosphere, CFCs have been phased out under the Montreal Protocol of 1987.
Description : Which of the following chemicals is responsible for depletion of ozone layer in the atmosphere? (1) Chlorofluorocarbons (2) Nitrous oxide (3) Sulphur dioxide (4) Carbon dioxide
Last Answer : (1) Chlorofluorocarbons Explanation: Chlorofluorocarbon contributes to ozone depletion in the upper atmosphere. It is an organic compound that contains only carbon, chlorine, and fluorine, produced as a ... methane, ethane, propane. Its manufacture has been phased out under the Montreal Protocol.
Description : The depletion of ozone layer is due to - (1) chloro fluoro carbon (2) carbon dioxide (3) sulphur dioxide (4) ethane
Last Answer : (1) chloro fluoro carbon Explanation: A chlorofluorocarbon (CFC) is an organic compound that contains only carbon, chlorine, hydrogen and fluorine, produced as a volatile derivative of methane and ... R-4104 by the Montreal Protocol because they contribute to ozone depletion in the upper atmosphere.
Description : Ozone depletion in the atmosphere is mainly caused by - (1) sulphur dioxide (2) nitrogen dioxide (3) hydrogen sulphide (4) chlorofluorocarbon
Last Answer : (4) chlorofluorocarbon Explanation: A chlorofluorocarbon (CFC) is an organic compound that contains only carbon, chlorine, hydrogen and fluorine, produced as a volatile derivative of methane and ethane. They contribute to ozone depletion in the upper atmosphere.
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 : Write a note on Ozone Depletion?
Last Answer : i) Oxygen in the upper atmosphere forms ozone that forms a layer over the earth. ii) This ozone shield filters out of the ultraviolet rays of the sun and protects the earth from being ... due to air pollutants particularly nitric oxide and chlorine atoms that attack the ozone layer.
Description : Dangerous gas for depletion of ozone layer is: (A)Ethane (B) Methane (C)CFC (D) Carbon-dioxide
Last Answer : (C)CFC
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 : CFC (chloro fluoro carbon) is very highly reactive in causing depletion of ozone layer in the atmosphere. Each atom of chlorine liberated from CFC is capable of decomposing __________ molecules of ozone. (A) 10 2 (B) 10 5 (C) 10 9 (D) 10 15
Last Answer : (B) 10 5
Description : Which of the following compounds has been suggested as causing depletion of the ozone layer in the upper stratosphere? (a) CH4 (b) CCl2F2 (c) CF4 (d) CH2Cl2
Last Answer : CCl2F2
Last Answer : A layer in the upper atmosphere is called ozone (O3) layer. It prevents to enter ultraviolet (UV) rays to the earth. These rays are harmful for life. Chlorofluorocarbons (CFCs) react with ... the earth and causes serious diseases like skin cancer, eye problems. II. The temperature is increasing.
Description : How does ozone depletion contribute towards global warming?
Last Answer : UV rays can enter into the earth so the temperature of the earth is increasing and earth globe is getting warmer. This is called global warming.
Description : Depletion of ozone Layer is mainly due to
Last Answer : Chlorofluoro carbon
Description : This cause the depletion of ozone layer by decomposing ozone to oxygen . a) CFC b)UV radiations c)CO2 d)O2
Last Answer : b)UV radiations
Description : 1. Bird population is seen to decrease due to thinning of egg shells which is caused by : a) Eutrophication b) Biomagnification c) Greenhouse Effect d) Ozone depletion
Last Answer : d) Ozone depletion
Description : Pesticide responsible for Ozone depletion is a) BHC b) DDT c) Melathion d) None of the above.
Last Answer : d) None of the above.