Chemistry Notes for B.Sc. and M.Sc.

 An ecosystem is the basic functional unit of ecology in which the living organisms interact with each other and also with their surrounding environment.  The term “Ecosystem” was first introduced in 1935 by A.G.Tansley . Structure of the Ecosystem Ecosystem is an open system allowing the flow of energy and components  throughout its boundaries.  The structure of an ecosystem contains:  1. Biotic components.   2. Abiotic components 1. Biotic Components Biotic components include all the living components in an ecosystem.  The biotic components are further into following categories on the basis of their nutrition  A. Autotrophs (Producers),  B. Heterotrophs (Consumers) C  Saprotrophs (decomposers) A.Producers/autotrophs/Converters/Transducers: Which can produce food through the process of photosynthesis using sunlight. Include: plants and phytoplanktons. B.Consumers/ heterotrophs Organisms that depend on other organisms for food....

 The most abundant Nobel gas in the earth atmosphere? Argon Number of layers in the earth atmosphere? 4.   Troposphere Stratosphere  Mesosphere Ionosphere Ozone Layer is present in which layer of the atmosphere? Stratosphere What is the full form of ICAR? Indian Council of agricultural research What is the full form of CPCB?  Central pollution control board What is the full form of IUCN? International Union for conservation of nature

  Quiz Questions on Drunken Driving and Harms of drinking alcohol Question 1; The compound used in breath analysis test for drunken driving is ______ 1. K2Cr2O7 2. KI 3. KMnO4 4. CuSO4 Answer: K2Cr2O7 Question 2; In  the breath analyser test for drunken driving, the ethanol is converted to which compound________ 1. Aldehyde 2. Ketone 3. Acetic Acid 4. None of these Answer: Acetic Acid Question 3; The permissible blood alcohol limit in India is 1. 0.01 2. 0.03 3. 0.05 4. 0.08 Answer: 0.03 Question 4; Which color bands are observed in breath analysis test for drunken driving  1. Black 2. Orange 3. Green 4. Red Answer: Green Question 5; Where is alcohol mainly absorbed in human body 1. Stomach 2. Mouth 3. Small Intestine 4. All of the Above Answer:  All of the Above Question 6; Can Alcohol be directly absorbed into bloodstream from stomach 1. True 2. False Answer: True Question 7; Which enzyme is responsible for initial breakdown of alcohol in stom...