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Js Gouthami 5 years, 3 months ago
Meghna Thapar 5 years, 3 months ago
Salts can be classified in a variety of ways. Salts that produce hydroxide ions when dissolved in water are called alkali salts. Salts that produce acidic solutions are acid salts. Neutral salts are those salts that are neither acidic nor basic. A basic salt is any salt that hydrolyzes to form a basic solution. Another definition of a basic salt would be a salt that contains amounts of both hydroxide and other anions. White lead is an example. It is basic lead carbonate, or lead carbonate hydroxide. A normal salt is a salt formed by the complete replacement of replaceable hydrogen atoms from an acid molecule by means of a metal or a group of elements acting like a metal. Examples: The compounds like KCl, NaCl, FeS04, Na2S04, FeCl2 etc are normal salts.
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Posted by Abhinav Singh 5 years, 3 months ago
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Esophagus: The esophagus is a muscular tube that connects the pharynx (throat) to the stomach. The esophagus contracts as it moves food into the stomach. A “valve” called the lower esophageal sphincter (LES) is located just before the opening to the stomach.
Harshita Pal 5 years, 3 months ago
Posted by Hemalatha Manikandan 5 years, 3 months ago
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Yogita Ingle 5 years, 3 months ago
Alluvial soils are generally associated with river floodplains but alluvial soils are difficult to define satisfactorily because they may be developed on fluvial, lacustrine or marine deposits.
Harshita Pal 5 years, 3 months ago
Posted by Kamatchi Balan Ganesan 5 years, 3 months ago
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Yogita Ingle 5 years, 3 months ago
| Clinical Thermometer | Laboratory thermometer |
| Temperature range if 35 to 42 0 c | Temperature range is -10 to 110 0 c |
| Used to measure human body temperature | Used to measure temperature in the laboratory |
| It has kink which prevents immediate backflow of mercury | It does not have a kink |
Posted by Kamatchi Balan Ganesan 5 years, 3 months ago
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Js Gouthami 5 years, 3 months ago
Super Hero 5 years, 3 months ago
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Posted by Nos Daivagna 5 years, 3 months ago
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Yogita Ingle 5 years, 3 months ago
Fire Retardant: The use of potassium alum for textiles, wood and paperless flame resistance is as fire-retardant.
Tanning: For leather tanning, potassium alum is used to extract moisture from the hide and avoid rotting. Alum is not covered and can be washed out, as compared to tannic acid.
Iron and Steel Dissolving: This aluminium solution has the property that steels are dissolved without affecting aluminium or base metals. For machined castings of steel parts of machinery, alum solutions can be used.
Gourmet Food: Potassium alum may be an acidic component in baking powder to provide a second leavening step at high temperatures (although sodium alum is more widely used for this purpose). Bakers in England made bread whiter with alum during the 1800s.
Used for Dyeing: Alum was used to form a permanent link between natural textile fibres like wool and dye, as mordant.
Posted by Komal Kumari 5 years, 3 months ago
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Yogita Ingle 5 years, 3 months ago
Sericulture is a process of rearing silk worms for silk production. Healthy moths are selected to lay eggs as the eggs hatch once in a year. These eggs are washed and stored. Larvae that hatch from the eggs are spread on wooden trays, fed with chopped mulberry leaves and allowed to grow. After 20 – 35 days, twigs are placed on the trays, on which the worms start spinning their cocoons. This may take about 3 – 7 days. Once the cocoons are completely built, they are put in hot water, for reeling, in which the worms are killed and the filaments of silk are drawn from the cocoons.. Filaments from several cocoons are wounded on a reel, which are then dyed and woven into a silk fabric.
Posted by Diwakar Kirar 5 years, 3 months ago
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Heat, energy that is transferred from one body to another as the result of a difference in temperature. If two bodies at different temperatures are brought together, energy is transferred—i.e., heat flows—from the hotter body to the colder. Heat energy is the result of the movement of tiny particles called atoms, molecules or ions in solids, liquids and gases.
Posted by Anagha Shaji 5 years, 3 months ago
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Meghna Thapar 5 years, 3 months ago
Physical changes are changes affecting the form of a chemical substance, but not its chemical composition. Physical changes are used to separate mixtures into their component compounds, but can not usually be used to separate compounds into chemical elements or simpler compounds. The difference between a physical reaction and a chemical reaction is composition. In a chemical reaction, there is a change in the composition of the substances in question; in a physical change there is a difference in the appearance, smell, or simple display of a sample of matter without a change in composition.
Posted by Sneha Prasad 5 years, 3 months ago
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Poorvi Kasana 5 years, 3 months ago
Posted by Sneha Prasad 5 years, 3 months ago
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Yogita Ingle 5 years, 3 months ago
Evaporate water from the copper sulphate solution so as to get a saturated solution. Cover the solution with a filter paper and leave it undisturbed at room temperature to cool slowly for a day. You will obtain the crystals ofcopper sulphate in the china dish. The crystallisation method is used to purify solids.
Posted by Sneha Prasad 5 years, 3 months ago
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Meghna Thapar 5 years, 3 months ago
Crystallization is a process that separates a pure solid in the form of its crystals from a solution. This method is used to purify solid, example the salt we get from sea water can have many impurities in it. To remove these impurities, the process of crystallization is used. Crystallization is a common technique used to purify solids. Two common methods of crystallization are “gradual cooling” and “diffusion”. Gradual Cooling. Gradual cooling involves dissolving the impure solid in a minimum amount of a hot solvent and allowing the resulting solution to cool slowly to room temperature.
Posted by Sneha Prasad 5 years, 3 months ago
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Meghna Thapar 5 years, 3 months ago
The presence of the stable film prevents additional corrosion by acting as a barrier that limits oxygen and water access to the underlying metal surface. ... In summary, stainless steel does not rust because it is sufficiently reactive to protect itself from further attack by forming a passive corrosion product layer. Stainless steel is durable and resists corrosion and oxidation. Our jewelry will not rust, tarnish, or turn your skin green, even if worn daily. More reasons why Stainless Steel is the best... ... Unlike many other metals, these are safe to wear and no harm will come if you wear stainless steel for life.
Posted by Saurav Das 5 years, 3 months ago
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Yogita Ingle 5 years, 3 months ago
A dry cell has an electrolyte and a pair of electrodes. Even if the cell is not connected in a circuit, electrons /ions travel inside the electrolyte. A dry cell always has some internal resistance. Because of this internal resistance there is always some voltage drop associated with the cell even if the cell is not being use, and eventually become dead after a long time. And also NH4Cl is acidic in nature. It corrodes zinc container.
Posted by Saurav Das 5 years, 3 months ago
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Yogita Ingle 5 years, 3 months ago
A dry cell has an electrolyte and a pair of electrodes. Even if the cell is not connected in a circuit, electrons /ions travel inside the electrolyte. A dry cell always has some internal resistance. Because of this internal resistance there is always some voltage drop associated with the cell even if the cell is not being use, and eventually become dead after a long time. And also NH4Cl is acidic in nature. It corrodes zinc container.
Posted by ??Arghyarupa?? 5 years, 3 months ago
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Yogita Ingle 5 years, 3 months ago
| Breathing | Cellular Respiration |
| Definition | |
| Breathing involves the process of inhaling oxygen and exhaling carbon dioxide | Cellular respiration is the process of breaking down of glucose to produce energy, which is then used by cells to carry out the cellular function. |
| Process Occurrence | |
| Breathing takes place in the lungs. Also involves the nose, mouth and pharynx | Respiration takes place in cells |
| Type of Process | |
| Breathing is voluntary as well as an involuntary physical process. (For example, breathing during sleep is involuntary. Voluntary breathing is observed when we sing, speak, swim or for relaxation techniques) | Respiration is an involuntary chemical process. |
Posted by James Rabha 5 years, 3 months ago
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Posted by Smrutisimran Sahu 5 years, 3 months ago
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Villi are finger-like outgrowths on the inner walls of small intestine. The villi increase the surface area for absorption of the digested food. Each villus has a network of thin and small blood vessels close to its surface. The surface of the villi absorbs the digested food materials. The absorbed substances are transported via the blood vessels to different organs of the body.
Posted by Aafiya Sadiq 5 years, 3 months ago
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Yogita Ingle 5 years, 3 months ago
Speedometer: Measures and displays instantaneous speed of the vehicle.
Odometer: Measures and displays distance travelled by the vehicle.
Posted by Pranav Kore 5 years, 3 months ago
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Aafiya Sadiq 5 years, 3 months ago
Posted by Pranav Kore 5 years, 3 months ago
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Yogita Ingle 5 years, 3 months ago
Nutrients: A nutrient can be defined as components that are needed by our body to grow, survive and carry on different daily activities.
Posted by Priya Bisht 5 years, 3 months ago
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An occupational hazard is a disease which we get due to our occupation. An example is the sorters disease .People working in the sorters departmnt ( in the factory where wool is sorted ) are infected by this bacterium called anthrax. which causes this fatal Occupational hazard is the term used for risk or the consequences involved with a particular occupation.
Posted by Sakshi Sinha 5 years, 3 months ago
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Posted by Annpurna Bhardwaj 5 years, 3 months ago
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Amoebae are also important for recycling nutrients in the soil. According to Maciver, when nutrients become available they are taken up by bacteria, that "effectively lock up all the nutrients in bacterial mass. " When bacteria are consumed, nutrients are released back into the soil. A single-celled microbe that catches food and moves about by extending fingerlike projections of a colorless material called protoplasm. ... bacteria (singular: bacterium) Single-celled organisms. bacterial Having to do with bacteria, single-celled organisms.
Posted by Poorvi Ds?? 5 years, 3 months ago
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Greenhouse effect, a warming of Earth's surface and troposphere (the lowest layer of the atmosphere) caused by the presence of water vapour, carbon dioxide, methane, and certain other gases in the air. Of those gases, known as greenhouse gases, water vapour has the largest effect. The greenhouse effect is the process by which radiation from a planet's atmosphere warms the planet's surface to a temperature above what it would be without this atmosphere. Radiatively active gases in a planet's atmosphere radiate energy in all directions.
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Js Gouthami 5 years, 3 months ago
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