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6th Class Science- Food – Where does it come from?  Foods are the substances from which organisms derive energy and requisites for its growth and maintenance. We will now talk about ingredients in food items. Foods are eaten by living organisms All living things need food. Plants manufacture their own food; animals are dependent on plants or other animals for their survival. We can easily group organism on the basis of food they eat. There are 3 categories: – Herbivores :- Animal eating plants and plants products are called herbivores. E.g:-Cow, deer, sheep, and elephant. Carnivores :-  Animal eating other animals such as lion and tiger are called carnivores. Omnivores :- Animal eating plants and animals are omnivores. E.g:- Humans, crow, squirrels, and cockroaches. Sources of Food Both plants and animals provide us food and a number of other useful products such as medicines, paper, timber, and fibers. Plants as Source of Food Cereals :- They is most important

Class 11 Chemistry - Bohr’s Model Of The Atom Chemistry notes for class 11: Bohr Atomic Model An atom is made up of three particles – electrons, protons, and Electrons have a negative charge and protons have a positive charge whereas neutrons have no charge. They are neutral. Due to the presence of an equal number of negative electrons and positive protons, the  atom as a whole is electrically neutral. The protons and electrons are located in a small nucleus at the center of the atom. Due to the presence of protons, the nucleus is positively charged. The electrons revolve rapidly around the nucleus in  fixed circular paths called energy levels or shells . The ‘energy levels’ or ‘shells’ or ‘orbits’ are represented in two ways: either by the numbers 1, 2, 3, 4, 5 and 6 or by letters K, L, M, N, O, and The energy levels are counted from the centre outwards. Arrangement of orbits around the nucleus Each energy level is associated with a fixed amount of energy. The energy

Alphabet Series Tricks for Bank PO – Tricks For IBPS/SBI – PO & CLERK Alphabet Series tricks for  Bank PO   :  Problems based on English alphabet series are frequently asked in banking exams. The key to solving these types of problems quickly is by remembering the positions of the alphabets from the beginning as well as from the end. Let us look at some problems: Directions for questions 1 to 3:  The letters of the English alphabet are assigned numbers from 26 to 1 in such a way that 26 stands for A, 25 stands for B, and so on. The assigned numbers are used to write the letters of the alphabet. What will be the sum total of all the vowels in the sequence? (1) 80           (2) 84        (3) 76          (4) None of these Which of the following sequences denotes a valid word? (1) 6-12-18-23             (2) 5-11-19-22             (3) 5-15-18-24              (4) 5-12-18-23 Learn more question and answers for Alphabet Series Tricks for Bank PO For m

Class 12 Biology Online Notes -Types of Vaccines Vaccines are dead or inactivated organisms or purified products derived from them. There are several types of vaccines in use. These represent different strategies used to reduce the risk of illness while retaining the ability to induce a beneficial immune response. Inactivated vaccines Attenuated vaccines Toxoids Protein Subunit Rather than introducing an inactivated or attenuated micro-organism to an immune system (which would constitute a “whole-agent” vaccine), a fragment of it can create an immune response. Examples include the subunit vaccine against Hepatitis B virus that is composed of only the surface proteins of the virus (previously extracted from the blood serum of chronically infected patients, but now produced by recombination of the viral genes into yeast), the virus-like particle (VLP) vaccine against human papillomavirus (HPV) that is composed of the viral major capsid protein, and the hemagglutinin

Online Bank Coaching Classes : Reasoning Data Conclusion Directions for Question No. 1-3:  Study the following information carefully & answer the questions that follow: There is a group of 5 person P, Q, R, S and T In this group, there is one badminton player, one cricket player, and one table tennis player. P and S are unmarried ladies and do not play any games. No lady is a cricket player or a badminton player. There is a married couple in the group of which T is the husband. Q is the brother of R and is neither a cricket player nor a table tennis player. 1. Which of the following groups has only ladies? a. PQR      b. QRS     c. RST     d. None of these 2. Who is the table tennis player? a. P     b.      R c. S      d. T 3. Who is the wife of T? a. R    b. Q     c. S     d. None of these 4. Which of the following groups has only males? a. PT    b. ST     c. QT     d. QR Learn complete  Reasoning Data Conclusion Takshila Learning is one of

Free Online Coaching for Bank PO Exams- Miscellaneous Questions Online bank coaching videos  : There are many miscellaneous topics like Cube, Dice, Directions etc. from which 3-5 questions are expected in preliminary as well as mains examination. So, we at Takshila Learning are providing you some of the important miscellaneous questions that you should definitely go through before taking up any exam: , Directions for Question No. 1-3:  Read the following instructions carefully and answer the following questions: There is a rectangular wooden block of length 4 cm, height 3 cm, and breadth 3 cm. The two opposite surfaces of dimension 4 cm x 3 cms are painted yellow on the outside. III. The other two opposite surfaces of dimension 4 cm x 3 cm are painted red on the outside The remaining two surfaces of dimension 3 cm x 3 cm are painted green on the outside Now, the block is cut in such a manner that cubes of 1cm x 1cm x 1cm are formed. How many cubes formed will

8th Class Science Notes- Pollution of Air and Water Air pollution is basically the occurrence of the chemical in the air in quantities which are harmful to human health and the environment. The common air pollutants and their main sources:- Particulate Matter: –  It is made up of tiny particles suspended in air. Major particulate matter sources are volcanic eruption, dust storm, burning of fossil fuel in thermal plants and forest fire. They are also present in exhaust fumes of automobiles and power plants as soot, fly ash and lead particles. Chlorofluorocarbons (CFCs) –  They are commonly used as coolants in refrigerators, air conditioners and as propellants in aerosol spray cans. They are also used in home insulation, plastic foam, and throwaway metallic cans. Burning of fossil fuels-  They are coal and petroleum in thermal power plants and automobile releases oxides of sulphur and nitrogen into the air. Burning of carbon – Carbon-rich fuels such as firewood, coal, and p

Class 11th Biology - Historical Background and Discovery of Cell Historical Background and Discovery of Cell Robert Brown  (1773- 1858) discovered  nucleus  in the center of all cells. He established that the nucleus was the fundamental and constant component of the cells. In 1838, a German botanist  Mathias Jacob Schleiden  (1804-1881) put forth the idea that cells were the units of structure in the plants. In 1839, his co-worker, a German Zoologist, Theodor Schwann applied Schleiden’s thesis to the animals. Both of them postulated that the cell is the basic unit of structure and function in all life forms. This simple, basic and biological generalization is known as  Cell Theory or Cell Doctrine. In later years the cell theory was extended and refined further.  Nageli (1817-1891) showed in 1864 that plant cells arise from the pre-existing cells. In 1855, a German pathologist  Rudolf Virchow  (1821-1902) confirmed Nageli’s principle of the cellular basis of life’s continuit

Square and Square roots- Class 8 Maths If we will closely observe the numbers like 4, 9, 25, 64, 81, etc we will observe a fact which is these numbers can be rewritten as- 4=2*2 9=3*3 25=5*5 64=8*8 So, these numbers can be easily expressed as the product of the number itself and these types of numbers are also known as square numbers. If a natural number  m  can be expressed as n² where  n  is also a natural number, then  m  is a square number. How to find whether the number is a square number? Let us consider a number  32 We know that 5²=25 and 6²=36. If 32 is a square number, it must the square of a natural number between 5 and 6 and as we know that there is no natural number between 5 and 6. So, 32 is not a square number. Number Square 1 1 2 4 3 9 4 16 5 25 6 36 7 49 8 64 9 81 10 100 The numbers 1, 4,9,16 ar

Packing and Packing efficiency in Solids-Class 12 Chemistry We know that there are 7 crystal systems and 14 types of unit cells that occur in nature. The solid states of the majority of metallic elements, some covalent compounds, and many ionic compounds occur as cubic lattices. There are three types of cubic unit cells within the cubic system. Let’s pack the three  cubic unit cells  and the  hexagonal unit cell  and also determine their  packing efficiency.  The packing efficiency is the percentage of the total volume occupied by the spheres themselves. We already know that unit cells result from the way the atoms pack together in a crystal lattice. The simple cubic unit cell:  When we arrange the first layer of spheres (imagine particles of the crystals to be identical spheres) in vertical and horizontal rows, then large diamond-shaped spaces are formed. If we place the second layer of spheres directly above the first layer, we obtain the arrangement based on the  simple c

Monopoly and Reasons for Its Emergence- Online Economics Classes for Class 12 Monopoly :  It is very difficult for a firm to enter the monopoly market. Also, a monopolist is free to charge any price for its product. Thus, the seller under the monopoly is said to be the price maker and not the price taker. The reasons for its emergence Forming a cartel:  Sometimes, individual firms while retaining their identities, unite into a group and coordinate their output and pricing policy in such a way as o reap the benefits of monopoly. Such a formation is called a CARTEL. A cartel is a business combination under which firms coordinate their output and price to reap the benefits of monopoly. Grant of patent rights:  When a company/ firm introduces new product or technology, its granted patent rights for its production by the government. This exclusive right is provided by the government in the form of a patent This patent right prevents others to produce the same product or uses t

6 Class science notes-Ch-6-Changes Around Us A change can bring different kinds of effect on the things around us. Some of the effects brought are permanent in nature which cannot be reversed. Some effects are brought into position, shape, size or state of the things; these effects are temporary in nature. Changes caused by heating Some objects simply get hot, but no other change takes place –  When we drink hot milk or coffee, from a cup, we feel that the cup is hot. Although it doesn’t change the state of the cup take place. Some objects get hot and expand –  The metal gets heated and increase in size, on cooling the metal got contracted and regained its original size. Some objects get hot and burn –  If we will burn a candle it will heat and melt away, this change is irreversible in nature as we cannot get the candle back in shape. Some objects change their state  –  When ice is heated it changes into water, when water is heated it changes into steam. These changes

Indian Classical & Folk Dances Online Classes for Banking   : There are many important  classical & folk dances  in India that are practiced in various parts of our country which is an important topic for banking exams as 1-2 questions can be asked from this topic. Your job is to remember the name of the classical & folk dances & the states in which they are practiced. An important Classical & folk dances in India along with their states are listed below. Indian Classical Dances : STATE CLASSICAL DANCE Uttar Pradesh Kathak Kerala Kathakali Tamil Nadu & Karnataka Bharatnatyam Kerala Mohiniattam Rajasthan Ghoomar Manipur Manipuri Andhra Pradesh Kuchipudi Read more for complete Indian Classical & Folk Dances Join Today & feel the difference in the path of success…! Takshila Learning  is one of the best online bank coaching sites offering  online classes for  IBPS PO , IBPS Clerk SBI PO,  SBI Clerk , RRB and another Banking exams.