Notes and Study material for Exams
Preparation of Oxygen Oxygen Oxygen is prepared in lab generally in two ways either by the application of heat or no application of heat. Using heat: Oxygen in lab is prepared by heating the mixture of powdered potassium chlorate and manganese dioxide in the ratio 4:1 in a hard glass test tube. The oxygen gas … Read more
Non Metals As far as Elements are concerned, a nonmetal is simply an element that does not display the properties of a Metal. It is not defined by what it is, but by what it is not. It doesn’t look metallic, can’t be drawn into a wire or pounded into shape or bent, doesn’t conduct … Read more
Compounds are defined as substances composed of two or more different Elements that are chemically combined. Both salt and water are compounds. Some important chemical compound and their uses are as follows:- NaCl sodium chloride (table salt, used in solutions for contact lens) ZnO zinc oxide (used in some sunscreens and diaper rash ointment) NaF … Read more
Respiratory System Introduction Red blood cells are like trucks that transport cargo on a highway system. Their cargo is Oxygen, and the highways are blood vessels. Where do red blood cells pick up their cargo of oxygen? The answer is the lungs. The lungs are organs of the respiratory system. The respiratory system is the … Read more
–2/”>a >DOCTYPE html PUBLIC “-//W3C//DTD XHTML 1.0 Transitional//EN” “http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd”> Fermentation Which of the following is the most efficient type of respiration? (A) Aerobic respiration (B) Anaerobic respiration (C) Photosynthesis (D) Fermentation Which of the following is the equation for aerobic respiration? (A) C6H12O6 + 6O2 â 6CO2 + 6H2O + ATP (B) C6H12O6 + 2ADP … Read more
Volcanoes and sea-scarps. This great variety of relief is largely due to interaction of tectonic, volcanic, erosional and depositional processes. At greater depths, the tectonic and volcanic phenomena are more significant processes. Continental Shelf: This is a gentle seaward sloping surface extending from the coasts toward s the open sea. In all, about 7.5% of … Read more
–2/”>a >DOCTYPE html PUBLIC “-//W3C//DTD XHTML 1.0 Transitional//EN” “http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd”> Blood makes up about 8% of the human body weight. It contains erythrocytes, leucocytes, thrombocytes (platelets) and plasma. The volume Percentage of all blood cells in the whole blood is about 45% of adults (hematocrit). The rest consists of liquid plasma (e.g. water, plasma proteins, electrolytes … Read more
An Atmosphere is a layer of gases surrounding a planet or other material body, that is held in place by the gravity of that body. Many of the planets in this Solar System have atmospheres, but none that we know of have an atmosphere quite like ours – one that can support life. The … Read more
Biogeochemical Cycles: Here is a list of subtopics without any description for Biogeochemical Cycles: Carbon cycle Nitrogen cycle Phosphorus cycle Sulfur cycle Water cycle Oxygen cycle Rock Cycle Sedimentary cycle Hydrologic cycle Carbonate cycle Nitrogen fixation Nitrification Denitrification Ammonification Mineralization Immobilization Leaching Uptake Transpiration EvaporationEvaporation PrecipitationPrecipitation Runoff Infiltration Percolation Groundwater Surface water Oceans AtmosphereAtmosphere Biosphere … Read more
Elements Required in Plant Growth Plants are living organisms that require a variety of elements in order to grow and thrive. These elements are essential for the production of chlorophyll, the molecule that plants use to convert sunlight into energy. They are also necessary for the formation of proteins, nucleic acids, and other essential molecules. … Read more