Member Aruja
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Full Form of LCM is ‘ Least common multiple’.
That means the smallest number (C) that can be divided by both given integers in the question (a,b). The LCM of two number comes when we take out the smallest common multiple from the tables of the two given numbers in the question.
Example- Find the LCM of 8, 16
so first we will take out the factor of
8= 8, 16, 24, 32, 40, 48,…..
16= 16, 32, 48,……
The common multiple that we get from both the tables is 16.
Ans) LCM of (8,16)= 16
Full Form of HCF is ‘ Highest Common Factor ‘.
That means the highest common factor basically the number which can divide both the number leaving number in denominator or which completely divide without leaving a remainder. It comes when we pick as many common numbers from both the numbers factors.
Example- Find HCF of 6,16
Factors of 6= 2 * 3
Factors of 16= 2 * 2 * 2 * 2
Now we will pick the common number from both of the factor = 2.
So HCF of (6,16)= 2
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Mahatma Gandhi also known as the ‘Father of nation’. HE was born in purvanda, Gujarat on 2/ Oct / 1869. Mohandas Karamchandra Gandhi was his full name, people used to call him M.K. Gandhi also. He was born in a middle class family, his father name was Karamchandra Gandhi and mothers name was Putlibai. When he was young he was a really shy, an introverted kid. In 1874 his family shifted to rajkot. In 1876 his father became the dewan of rajkot. when Gandhi ji was 9 he used to attend the local school in raajkot and when he was only 11 he completed his high school studies, in which he used to learn arathmatics, history, Gujarati language. During this time he discovered that he was good in studies but he was not good in sports. in 1883 when he was only 13 his parents got him married to a 1 year older girl than him ‘kasturi’. But after getting married he denied to stay together as foe him getting married at such a young age doesn’t mean anything. Then when he turned 18 his wife gave birth to there 1st child, but after some days the new born died. at that time only he completed his graduation from Ahmadabad. he got suggestion to study law aboard, but at around that time he had there 2nd child name hiralal. So his mother doesn’t want him to leave his family at young age and go aboard. But he was sure that he will go England to study law, he promised his mother that he will be fine there and will take good care of himself. In 1888 he left for England, he studied law and work on his shyness and willing to increase his confident to speak in front of people.So he joined public speaking group in England. When he was in England his mother died and nobody informed him about this. In 1891 when he came back to India after completing his studies then he discovered the whole thing. He started practicing law in Indian court. Once he got an offer that would he like to work as lawyer in south Africa, and he accepted that proposal. the same year he left for south Africa. In south Africa once he bought a ticket for 1st class in train. all the white people beat him at the station and didn’t allow him to travel although he had the ticket for 1st class. this was all because the British colonization in Africa, as white people don’t like black or middle class around them. This was a really bad experience for him. Then he came back to India, Started many movement, conference, parties, etc. He started fighting for swaraj walking on the path of non-violence and truth. And finally on 15th / August / 1947 India became an independent country.
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Tension is a condition of mind where you start overthinking and starts worrying very hard about every single problem you have. Now the point is, everyone in this world have problems, but it doesn’t mean that every single person takes tension. No, because if we think practically you are Hurting your mind and body, where if we say that you are that emotional person its tough for you to overcome tension.
1) Do yoga and meditation. These two are most effective ways to forget your tension and gives you felling of self love so that you stop hurting your mind and body. It will Provide you a stable state where you can figure out is it really worth to take tension and what are the possible opportunities or ways to overcome it.
2) Take a break or maintain distance from the thing that gives you tension.
3) Meet people whom you think can make you forget your tension or console you, make you feel happy.
4) Engage yourself in the work you love to do. But don’t over work yourself, it should give you peace of mind.
5) Think only positive thing about every situation, no matter how hard it is, create a shell of positivity around yourself. Do everything that gives you positive, good vibes.
That’s all you just have to create a feeling of self love for yourself.
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Tips to solve math problem are as follows.
1) Read the question properly until you get it right and you are sure about it.
2) Find the formula or method from which the question can be solved, find the easiest method.
3) Always cross check your calculation.
4) Try to move step by step don’t move to conclusion without analyzing the whole question and the method you are following.
5) Make sure to apply rules properly, don’t mold them into question according to your requirement. Because if you did you would not be able to find the correct answer.
6) You should memories the table, formulas and all basic rules properly. And apply them where required properly.
7) Practice daily if you are weak at something and if you really want to improve. ‘Practice makes a man perfect’. Don’t cheat, because if you will do so you will never be able to find your potential.
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Metal react with water and produce metal oxide and hydrogen as water is made of hydrogen and oxygen (oxide).
Equation- Metal + Water -> Metal Oxide + Hydrogen
Metal oxides that are easily dissolves in water they make metal hydroxide. But all metal do not react with water.
Equation- Metal Oxide + Water -> Metal hydroxide
Metals like Potassium and sodium react violently with cold water. The reaction of cold water with potassium and sodium is so strong and exothermic that the hydrogen produced through the reaction catches fire very easily, the second the produced hydrogen gas comes in the contact with air.
Where the reaction of calcium with water is not that violent. The heat evolved is not sufficient for the hydrogen gas produces during the reaction to catch the fire. Calcium starts floating because of the bubbles of hydrogen gas formed in water.
The Magnesium is one of the metal which does not react with water. It react with hot water which form magnesium hydroxide and hydrogen. It also start floating due to the hydrogen bubbles formed in water due to reaction.
Metals like aluminium, iron, zinc do not react with water at its any temperature. But they do react with steam and each of them form metal oxide and hydrogen after reaction.
Metals such as lead, copper, silver, gold do not react with any temperature or form of water at all.
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Metal react with water and produce metal oxide and hydrogen as water is made of hydrogen and oxygen (oxide).
Equation- Metal + Water -> Metal Oxide + Hydrogen
Metal oxides that are easily dissolves in water they make metal hydroxide. But all metal do not react with water.
Equation- Metal Oxide + Water -> Metal hydroxide
Metals like Potassium and sodium react violently with cold water. The reaction of cold water with potassium and sodium is so strong and exothermic that the hydrogen produced through the reaction catches fire very easily, the second the produced hydrogen gas comes in the contact with air.
Where the reaction of calcium with water is not that violent. The heat evolved is not sufficient for the hydrogen gas produces during the reaction to catch the fire. Calcium starts floating because of the bubbles of hydrogen gas formed in water.
The Magnesium is one of the metal which does not react with water. It react with hot water which form magnesium hydroxide and hydrogen. It also start floating due to the hydrogen bubbles formed in water due to reaction.
Metals like aluminium, iron, zinc do not react with water at its any temperature. But they do react with steam and each of them form metal oxide and hydrogen after reaction.
Metals such as lead, copper, silver, gold do not react with any temperature or form of water at all.
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Matter exist in three different states solid liquid and gas. In the process of evaporation the matter in liquid form turns into gas form.
Scientist has proven that water bodies like ocean, sea, lakes, provides up to 90% of the moisture in the atmosphere via the process of evaporation. Evaporation is a very important part of the water cycle. As we know that in a cycle every process is equally important so we cannot compromise in any process. Heat from the Sun, it is possible to perform evaporation without Sun also, but when sun is present evaporation take place more quickly and efficiently. Sun observe moisture that is ‘water’ not only from the water bodies but also from soil. The water level in the water bodies decrease as the sun observed the water from it through the solar energy. Now the water molecules that has been absorbed by the solar energy does not disappear into the atmosphere but it gets collected in the air, means they remains in the atmosphere. This thing effect the moisture present in the atmosphere. Areas with high temperature and large water bodies are most likely to be humid as they have high amount of moisture in their atmosphere. The evaporated water helps in the formation of clouds. Then clouds releases the stored moisture in the form of rain or snow in the different areas as they move with the help of wind energy in the direction in which wind blows. The rain and snow that falls to the ground again gets evaporated as the same cycle starts all over again.
There are some factors that affect evaporation.
1) Temperature- Increase in temperature means more evaporation with the decrease in temperature means a little less rate of evaporation.
2) Wind- With the increase in speed of wind the water particals moves away quickly which decrease the amount of water vapours in the atmosphere in that certain area where more water molecules takes their place. So increase in wind speed is increase in evaporation rate.
3) Humidity- The air can hold water up to certain amount. Where the amount of water in the atmosphere is high then the the rate of evaporation will automatically decrease therefore decrease in humidity increases the rate of evaporation.
4) Surface area- Increase in the surface area increases the rate of evaporation also. As the water with large surface area gets more space to get evaporated.
Example- Drying of clothes, rain, snow fall, etc
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First a fall what is plastic? Plastic is a man made material which cannot be decomposed as it is not a natural substance. Plastic is invented to make the normal life easy plastic is basically introduced as the container to every single household stuff that we buy in day to day life. As it cannot be decomposed, it takes millions of year to decompose into soil and people are using plastic in a huge amount and they are decomposing plastic in every new place which is getting polluted because of the plastic waste thrown there. And where there is demand of plastic the production of plastic is also growing in a huge amount which is a really serious thing.
Problems because of plastic waste.
1)Because formation of a layer of classic into the soil the rain water is not able to reach the level of the groundwater water because of which the level of groundwater is decreasing very rapidly.
2) Daily so many animals die not only on the land but into the sea also because of eating plastic or may be getting trapped into plastic. Because people are throwing plastic out and innocent animals who don’t know what to eat and what not to eat they eat plastic without knowing that it’s dangerous and into the sea people are composing tons of plastic because of which the aquatic life is in danger because they also get trapped into it and die because of suffucation.
3) Humans are also getting affected due to the increase of plastic waste there are many people out there who think that burning plastic is effective way to destroy it or decompose it but they don’t know that the dangerous gases that releases during the process of burning of plastic, it can cause severe respiratory chronic disease to humans as well and also gives a tremendous increase in to the global warming and air pollution.
Ways to reduce plastic waste and the effects of plastic pollution.
1) Spread awareness around you to people who are using classic in a very large amount or who are using wrong ways to decompose plastic like not showing it into the right place aur buying polythenes or buying plastic staff to save money, etc.
2) use paper bags jute bags or the eco friendly bags instead of plastic polythene and insisted of plastic containers use paper plate Steel or glass utensils. Now a days many people are introducing eco friendly replacements for plastic, so put some efforts, spread awareness about those products.
3) Always decompose plastic in the right container as government has already separated the biodegradable and nonbiodegradable waste which are decomposed by using proper methods which causes minimum harm to our earth. So support and follow all government rules and policies.
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We eat various types of food which has to pass through the digestive system. So that the body can use it properly and the waste product get excreted from the body. Our body cannot take required minerals, vitamins, etc substances directly from the complex form of food that we take so first of all we need to digested the complex form of food in the simplest form of food that is the function of a digestive system. Once the food is completely digested a body utilise that food to produce energy so that we can perform our day to day activities. The waste material that is produced after the whole process is done need to get excreted from the body. That is a whole different process and if the waste material does not get excreted from the body we are obviously going for seriously ill.
Let’s discuss the process.
Manually the food has to be processed to generate particles which are small and at the same texture this is achieved by crushing the food with our teeth. When we eat something we like our mouth waters. This is actually not only water but a fluid called saliva secreted by the salivary glands. This saliva makes that small texture of food grinded by a teeth smooth as the learning of two candle is soft so that it can move smoothly through the canales. The Saliva contains an enzyme called salivary amylase that breaks down start which is a complex molecules to give sugar the food is mixed thoroughly with saliva and moved around the mouth while chewing by the muscular tongue. From the mouth the food is taken to the stomach through the food pipe or oesophagus. The stomach is a large organ which expands when food enters it. The muscular walls of the stomach helps in mixing the food for early with more digestive juices. These digestion functions are taken care of by the gastric glands present in the Wall of the stomach. These release hydrochloric acid as a protein digestion enzyme called pepsin and mucus. Hydrochloric acid creates an acidic medium to break down the fore into the more simplest form where the mucus helps the walls of stomach to protect it from the effect of hydrochloric acid. The exit of food from the stomach is regulated by a sprinkle muscle which releases in and small amount into the small intestine from the stomach, the food now enters the small intestine. This is a longest part of alimentary canal which is fitted into a compact space because of extensive coiling. The length of the small intestine differ in various animals depending on the food they eat. The small intestine is the site of the complete digestion of carbohydrates protein and fat is received the secretion of the liver and pancreas for the purpose the food coming from the stomach is acidic and has to be made alkaline for the pancreatic enzymes to act bile juice from the liver accomplishes this in addition to acting on fats. Fats are present in the intestine in the form of large globules which makes it difficult for enzyme to act on it. Bile salts break them down into smaller globules increasing the efficiency of enzyme action. This is similar to the emulsification action. The pancreas secretes pancreatic juices which contains enzymes and trypsin for digestion proteins and lip stain for breaking down emulsified fats. The wall of the small intestine contained gland which secretes intestine induces the enzyme present in it finally convert the protein into amino acid, complex carbohydrates into glucose and fats and fatty acid and glycerol. The digested food is taken up by the walls of the intestine the inner lining of the small intestine and numerous figure like projection called villi. Which increase the surface area for absorption. The villi are richly supplied with blood vessels which take absorb food to eat and every cell of the body with where it is utilised for obtaining energy building up new tissues and repairing old tissue.
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Every educated person should know how to write a clear and readable letter. Everyone has sometimes to write business letters of some sort, and may have to face the problem of writing an important letter that will vitally affect his interest in life. The art of letter writing is, therefore,no mere ornamental accomplishment, but something that every educated person must acquire for practical reasons.
Letters are messages, and certain letter-forms have been established by experience ans custom as the most useful forms learned and used by every letter-writer, for neglect of them is a sign of ignorance and carelessness.
There are several different kinds of letter ( such as friendly, business letters, letter to editor, any service providing department, etc ) each of which has it’s own particular form.
The forms of letters are classified according to the purpose of writing.
1) Social letter; including friendly letters and notes of invitations.
2) Business letters; including letters of applications, letters to government officers, letters to newspapers.
Here we will talk about social letter ( friendly or informal letters)
Letters to relatives and intimate friends should be written in an easy, conversational style. They can be in a way that we are doing a friendly chat, applying rules and spontaneous compositions, they are informal and free and easy to write. We can write on any topic in any order we like there is no boundaries in number of words or in order that we write the letter formally, salutation, etc, But after all these liberties it doesn’t mean that we can write a ill composed or thoughtless letter, without any useful topic in letter. So we must take care and preserve some order in expressing out thoughts. So even when we are writing a informal letter we should take care of punctuation’s, grammar, idiom, phrases, spellings, etc while writing. However we can surely ignore the advance language or perfect content order. As mistakes in spellings, grammar, punctuation’s, are sign of that a uneducated person is writing a letter.
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An electric motor is a rotating device that converts electrical energy to mechanical energy. Electrical motor is used as a important component in electric fans, refrigerators, mixers, washing machines, computers, MP3 players, etc.
An electric motor works on the principle that when a rectangular coil is placed in a device that reverse the direction of current through a circuit is called a commutator. In electric motor the split rings works as a commutator. So through the split ring current is passed through it, a force act on it continuously. Hence electrical energy is converted into mechanical energy.
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Science is a boon in every possible way. But everything has exceptions and so somewhere development of science and its access to a everyone can be very dangerous. If a country is developing in science and technology, the country is considered strong, developing country.
Example- A country is developing in science by developing new nuclear weapons, inventing medicines to new deceases its a all over development. So its a boon for the country. But if that country uses them for inappropriate reasons, then it is a curse for the whole world. Same when a person use medicines when required its a boon, but if someone is selling them in a wrong way, doing wrong intake then its a curse.
So there are so many many that we cannot them all, but we can tell that if a act is good or bad. Same way when someone misuses science they think that this act is profitable but its actually not. Taking false samples, creating dangerous chemicals without any knowledge has no sighs of good result but still people do it because they think that this can give you a easy way to what you want but that’s not true.
In conclusion if you use anything in this world for welfare of everyone, with good intentions, then it is a boon. But if you are misusing anything for your personal well being and someone is getting into loos then its a curse.
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The ozone layer acts as a layer which is the top most protective layer in the atmosphere of earth. It protects earth from UV rays i.e. ultra violent radiations, which comes directly from the sun. If this layer disappears, then all the living organisms will face numerous changes in there atmosphere, health, lifestyle. People will suffer from skin cancer, deadly skin burn, extreme heat. As the ultra violent rays will directly attack on the earth as there is no optical for it in its way. it will increase earth temperature, which will cause climate changes, melting of glaciers, floods, extincting of some animal species, humans will become sick and start dieing as in the glacier there are so many unknown viruses and bacteria’s trapped. They will be into the atmosphere because of UV rays.
So its important to protect ozone layer depletion.
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Carbon and energy requirement of the autotrophic organism are fulfilled by photosynthesis. it is the process by which autotrophs take in substances from the outside and convert them into stored forms of energy. this material is taken in the form of carbon dioxide and water which is converted into carbohydrates in the presence of sunlight and chlorophyll.
The events that occurs during photosynthesis.
1) Absorption of light energy by chlorophyll present in the chloroplast.
2) Light energy is converted into chemical energy which helps in the splitting of water molecules into oxygen and hydrogen. Where oxygen is waste product and that’s why plants give oxygen.
3) Carbon dioxide is converted into carbohydrates which gives energy to plant to repeat the cycle.
<font face=”inherit” style=”font-family: inherit; font-size: inherit;”>The water used in the process is taken up from soil by roots. Other materials also like </font>magnesium, nitrogen, phosphorus, iron is taken up from soil as well.
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Global Warming is the increase in average temperature of earth surface. Over the past century, Earth has warmed by around 0.9 degree C.
Yes, its a very serious matter, that we should worry about. If global warming keep on increasing like this it can one day change the whole condition on earth in a negative way, many species of animals and plants will disappear, including humans. Major effect of Global warming are climate changes (sudden increase and decrease in temperature without any order like now it is going) Frequent heat waves, rising sea level, melting of glaciers, natural disasters like floods, and droughts, failing crops. These will cause the lack of food in the whole world and people will die from appetite, various diseases as glaciers had melted, as according to many scientist in glaciers there are 100 of bacteria and viruses are trapped which can cause a great damage to life.
We are facing Global warming on large scale because, we human are exploiting our earth for our own profit and requirement ignoring the fact that in future we have to face great consequences. we know everything but our greed for more made us do wrong every time regardless that what we are doing is wrong. Human activities like air pollution, industrialization and deforestation, volcanic eruptions and solar variations are major causes of global warming. and the most important depletion of ozone layer. It is the only layer that protect earth from it direct heat rays i.e. Ultra violent rays which is the major cause of global warming. The reason of depletion of it is chloro fluorocarbon, carbon monoxide, etc hot gases that comes 70 to 80 % from Air conditioners and refrigerators. These gases are hot so they goes up in the atmosphere easily and react with ozone and break it into Oxygen and O elements (ozone is made of 3 particles of O).
