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This section includes InterviewSolutions, each offering curated multiple-choice questions to sharpen your knowledge and support exam preparation. Choose a topic below to get started.
| 68001. |
What nutrition is absorbed by both small intestine and kidney |
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Answer» Amino acid and glucose Glucose Amino acid and glucose |
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| 68002. |
What is incineration . Why it is considered as a safe method of waste disposal? |
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Answer» Hey Incineration means reducing to ashes. Burning of a substance at high temperature to form ash is called incineration. It is used to destroy household waste, chemical waste and biological waste. Incineration greatly reduces the volume of the waste. The solid waste is burned are high temperature in the incinerator. The organic matter in waste burns away and only a little ash is left behind. |
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| 68003. |
Explanation of mercury ore? |
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Answer» Main ore of mercury is cinnarbar, HgS.The extraction of mercury from cinnabar ore involves two steps:1. The concentrated mercury (II) sulphide ore is roasted in air to form mercuric oxide (HgO).2. This Mercuric oxide formed is then reduced to mercury on further heating to about 300oC.2HgS(s) + 3O2(g) {tex}\\;\\xrightarrow\\triangle{/tex} 2HgO(s) + 2SO2(g)2HgO (s) {tex}\\;\\xrightarrow\\triangle{/tex}2Hg(l) + O2 (g)\xa0 Mercury belongs to least reactivity series. It have a sulphide ore called cinnabar. (HgS). Cinnabar is first heated in air. Which turns HgS into HgO with liberation of So2. Mercury oxide so obtained is again heated strongly . this reduces Mercury oxide to Mercury metal. HgS+O2 gives HgO+So2... THEN, HgO gives Hg+O2. |
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| 68004. |
How genitic takes place themselves |
| Answer» Can\'t able to understand ur question... Sorry | |
| 68005. |
why is small intestine called the site of complete digestion? |
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Answer» Small intestine is called the site of complete digestion becausr all the substances ( fats, protiens and carbohydrates) are converted into tgeir most simple forms. Fats are converted into fatty acids and glycerol by lipase. Protiens are converted into amino acids by aminopeptidases. 70% of leftover starch is converted into maltose. The small intestine is the longest part of the alimentary canal. Enzymes present in the intestine completely digest the partially digested food. Small intestine is called as site for complete digestion as the process of digestion is completed here and the food is completely broken down into its respective constituents. Because in small intestine complete digestion occurs that is fats gets converter into fatty acid or glycerol, proteins gets converted into amino acids and starch gets converted into carbohydrates. Sorry water is not digested ther is absorption of water from undigested food in large intestine. Because digestion of all food take place in small intestine.Only water is digested in large intestine |
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| 68006. |
Formulas of carbon and its compound chapter |
| Answer» | |
| 68007. |
State the difference between acids and bases. |
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Answer» ACIDS:1.Acids are sour in taste.2.It turns blue litmus red.3.Ph value of acids is less than7.BASES:1.Bases are bitter in taste.2.It turns red litmus blue.3.Ph value of bases is more than 7. \tAcidBaseAcids are the chemicals that readily accept electrons.Bases are the chemicals that readily donate electrons.Acids increase H+\xa0ion concentration in aqueous solution Bases increase OH-\xa0ion concentration in aqueous solution. Acids turn Blue litmus RedBases have no change with Blue Litmus paperAcids have no change with Red Litmus PaperBases turn Red litmus paper BlueAcids have a pH\xa0lower than 7Bases have a pH\xa0higher than 7Acids have no change on turmeric paperAcids change turmeric paper to redAcids turn china rose indicator solution PinkBases turn china rose indicator solution GreenAcids neutralise Bases and form salt.Bases neutralise acids and form saltAcids taste SourBases taste bitter\t |
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| 68008. |
What are different types of pollination?Write tue reason in 300 words |
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Answer» pollination are in two types 1. self pollination in which the pollen grain are do reproduction with same species or same plant 2. cross pollination in which the two plants are do reproduction with different plants Pollination takes two forms:\xa0self-pollination and\xa0cross-pollination.\xa0Self-pollination occurs when the pollen from the anther is deposited on the stigma of the same flower, or another flower on the same plant.\xa0Pollination\xa0is when pollen grains from an anther, the male portion of a flower, are transferred to a female part in the flower, known as the stigma. ... There are two\xa0types\xa0of\xa0pollination, called self-pollination\xa0and cross-pollination.\xa0Pollinating agents are animals such as\xa0insects,\xa0birds, and bats;\xa0water;\xa0wind; and even plants themselves, when self-pollination occurs within a closed flower. |
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| 68009. |
A plane mirror produce a magnification of |
| Answer» 1 | |
| 68010. |
Explain the machanism of cleaning action of soap |
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Answer» Thankyou very much A soap molecule consists of two parts:A long chain hydrocarbon tail. It is hydrophobic in nature.Head: It is hydrophilic in nature.When soap is added to an oily or greasy part of\xa0cloth, the hydrocarbon part of soap dissolves in oil, keeping the head away from the oil. Big molecules of oil and soap break by rubbing into small emulsified oil droplets in water, which are washed away by\xa0stream\xa0of water. The soap molecules which form micelles assist in dissolving the dirt in\xa0water, thus, we can wash our clothes. |
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| 68011. |
Mendlev periodic table |
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Answer» 8 colonm and 6 rows mandeleev periodic table are base on atomic mass but they arrange all metals acc.to their chemical properties and left some space for those element who could not discover at this time.. \tFeatures of Mendeleev’s Periodic Table:\tThere are seven horizontal rows in the periodic table, numbered from 1 to 7. These seven rows are called periods.\tThere are eight vertical columns numbered from I to VIII. These eight columns are called groups. Groups I to VII are further divided into sub groups A and B.\tThe properties of elements in a particular period show regular gradation from left to right.\tAchievements of Mendeleev’s Periodic Table:\tMendeleev kept some blank spaces in the periodic table for the elements which were yet to be discovered.\tHe also predicted properties of some elements even before their discovery which were later found to be correct.\tMendeleev’s periodic table could accommodate noble gases when they were discovered. |
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| 68012. |
Explain function of nephrons |
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Answer» Hi The four mechanisms used to create and process the filtrate (the result of which is to convert blood to urine) are\xa0filtration,\xa0reabsorption,\xa0secretion\xa0and\xa0excretion. A nephron is the basic unit of structure in the\xa0kidney. A nephron is used separate to water, ions and small molecules from the\xa0blood, filter out wastes and toxins, and return needed molecules to the blood. |
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| 68013. |
Write any five differences between ammeter and voltmeter. |
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Answer» Thanks for answer 1. Ammeter needs less resistance while , voltmeter requires more resistance . 2. Ammeter is connected in series while voltmeter is connected in parallel3. Symbol of ammeter is A while voltmeter symbol is V .4 . Ammeter is used to measure current while voltmeter is used to measure voltage .5 . Resistance of an ideal ammeter is zero 0 but resistance of ideal voltmeter is infinite .Hope it will help ? |
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| 68014. |
How would light get refracted through a transparent prism? |
| Answer» When a ray of light enters the glass prism it gets deviated two times. First when it enters the glass prism and second when it comes out of the prism. This is because the refracting surfaces of the prism are not parallel to each other. Also, when the ray of light passes through the prism it bends towards its base. | |
| 68015. |
Why ammeter burns out when connected in parallel? |
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Answer» Thanks Ammeter burns out in parallel because in parallel the current drawn is more but ammeter requires less resistance . If ammeter will get high current then chance of breakage of circuit can be possible . That\'s why the ammeter gets burn . |
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| 68016. |
What are the heating effect of electric current |
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Answer» heating effect of current is the heat which produced by the current carrying wire in which the current is flowing When current flows through the conductor and generates heat energy , due to which the appliance work . That is known as heating effect of electric current . When the current is passed through a high resistance carrying wire, like nichrome wire the wire becomes hot. This is called heating effect of electric current. When electric current is supplied to a purely resistive conductor, the energy of electric current is dissipated entirely in the form of heat and as a result, resistor gets heated. The heating of resistor because of dissipation of electrical energy is commonly known as Heating Effect of Electric Current. Some examples are as follows:When electric energy is supplied to an electric bulb, the filament gets heated because of which it gives light. The heating of electric bulb happens because of heating effect of electric current.When an electric iron is connected to an electric circuit, the element of electric iron gets heated because of dissipation of electric energy, which heats the electric iron. The element of electric iron is a purely resistive conductor. This happens because of heating effect of electric current. |
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| 68017. |
What are capillaries? Write it\'s function? |
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Answer» I think capillaries are present between the veins and arteries Oh thanx ? Capillaries are the thin blood vessels. Their function is to connect arteries and veins. Capillaries are tiny blood vessels connecting arteries to veins. These blood vessels carry oxygen and nutrients to individual cells.The capillaries are very thin and highly branched. THis helps in diffusion of gases with all parts of the body as well as helps the supply of blood to every small part of the body. |
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| 68018. |
write the function of intestinal juices secreated by small intestine. |
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Answer» Which fluid in the human body wets the internal organs \tThe intestinal juice secreted by the walls of the small intestine breaks down starch and carbohydrates into simple sugars. These sugars are known as glucose. It also converts the proteins into amino acids.\tAll these simple, broken down forms are called the digested food. |
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| 68019. |
How can the pH of solution can be determined |
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Answer» Universal indicator by the help of universal indicayor By universal indicator PH of any substances can be determined by universal Indicator.which indicates the presence of concentration (h+) hydronium ions and (OH-) hydroxide ions . |
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| 68020. |
Plastic is a insulator but sometimes we touch,we feel the current why |
| Answer» Because that plastic is a duplicate one.. U have?? | |
| 68021. |
judge the equivalent resistance when 1 ohm and 10^6 ohm are connected in parallel combination? |
| Answer» 1/1+1/10^6→10^6+1/10^6→1000001/1000000~1......hope this helpful.. | |
| 68022. |
What is coulomb\'s law ? What is it describe ?? |
| Answer» The quantitative expression for the effect of these three variables on electric force is known as Coulomb\'s law. Coulomb\'s law states that the electrical force between two charged objects is directly proportional to the product of the quantity of charge on the objects and inversely proportional to the square of the separation distance between the two objects.where Q1 represents the quantity of charge on object 1 (in Coulombs), Q2 represents the quantity of charge on object 2 (in Coulombs), and d represents the distance of separation between the two objects (in meters). The symbol k is a proportionality constant known as the Coulomb\'s law constant. The value of this constant is dependent upon the medium that the charged objects are immersed in. In the case of air, the value is approximately 9.0 x 109 N • m2 / C2. If the charged objects are present in water, the value of k can be reduced by as much as a factor of 80. It is worthwhile to point out that the units on k are such that when substituted into the equation the units on charge (Coulombs) and the units on distance (meters) will be canceled, leaving a Newton as the unit of force. | |
| 68023. |
Sorry SARTHAK only 5 answers can be sent |
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Answer» Answers first U can tell here Please tell here |
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| 68024. |
How do help copper palte in women |
| Answer» The prevention of pregnancy in women (by preventing fertilisation) is called contraception. There are four methods of contraception: \tBarrier method: In barrier method of contraception, the physical devices such as condoms are used by males and females.\tChemical method: In chemical methods of preventing pregnancy, the females use two types of pills – oral pills and vaginal pills. \tIntra-Uterine Contraceptive Devices – The use of intra-uterine contraceptive devices like Copper-T is very effective in preventing pregnancy. A Copper-T is placed inside the uterus by a doctor to prevent unwanted pregnancies.\tSurgical method: These methods are available for males as well as for females. Vasectomy is done in males and tubectomy is done in females.\tVasectomy - In males, a small portion of the sperm duct (Vasdeferens) is removed by surgical operation and both the cut ends are ligated properly. This prevents the sperms from coming out.\t\xa0Tubectomy - In females, a small portion of the oviducts is removed by surgical operation and the cut ends are ligated. This prevents the ovum from entering into the oviducts. | |
| 68025. |
How many laws of inheritance Mendel has given???? Name them..Lesson 9 |
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Answer» Thanks Mendel during his study on pea plants stated three laws of inheritance. These were:1. Law of dominance: A dominant gene will express itself over the recessive gene.2. Law of segregation: Parental genes are randomly separated to the germ cells such that each germ cell receives only one gene from each pair.3. Law of independent assortment: Genes for different traits are sorted separately from one another such that the inheritance of one trait is not dependent on the inheritance of the other trait.Out of these three laws, the law of segregation is the most important law because it has no exceptions and is universally accepted. |
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| 68026. |
What is the style of reproduction |
| Answer» \tModes of Reproduction used by Single Organisms:The production of a new organism from a single parent without the involvement of *** cells or gametes is called asexual reproduction.Fission, fragmentation, regeneration, budding, vegetative propagation and spore formation are various modes of asexual reproduction.\xa0\xa0\xa0Various methods of asexual reproduction are:\xa0\xa0\tBinary FissionFission in which the parent cell divides to form two similar daughter cells. Example - Amoeba.Multiple FissionFission in which the parent cell divides to produce more than two daughter cells. Example - Plasmodium.BuddingThe reproductive method in which an organism produces an outgrowth on its body surface, which then matures and develops into a new individual. Example - Hydra.Spore FormationSpore formation is an asexual mode of reproduction found in certain multicellular organisms like Rhizopus. The thick walled spores have the capacity to develop into new individuals under suitable conditions.RegenerationRegeneration is found in many completely differentiated simple organisms, like Hydra and Planaria. If such an organism is split into several parts, most of the parts will develop into complete organisms.FragmentationThe reproductive method in which certain multi-cellular organisms, on maturation, break up into smaller fragments, each of which develops into new individual. Example - Spirogyra.Vegetative PropagationThe reproductive method in which new plants are produced asexually from roots, stems or leaves of the parent plant. Example - Buds on leaf of Bryophyllum.\t\xa0\xa0The process of growing many plants from one plant by man-made methods is called artificial propagation. The three common methods of artificial propagation are:\xa0\tCuttingA small part of a plant which is removed by making a cut with a sharp knife is called cutting. Example - rose.LayeringIn this method, a branch of the plant is pulled towards the ground and a part of it is covered with moist soil leaving the tip of the branch exposed above the ground. After some time, new roots develop from the part of the branch buried in the soil. The branch is then cut off from the parent plant. The part of the plant which has developed roots grows to become new plant. Example - Jasmine plant.GraftingGrafting is the method in which cut stems of two different plants are joined together in such a way that the two stems join and grow as a single plant. The cut stem of a plant having roots is called stock whereas the cut stem of another plant without roots is called scion.\t\xa0\xa0\xa0\tSexual Reproduction:The reproduction which takes place by the combination of special reproductive cells called \'*** cells\' is called sexual reproduction.\xa0\xa0\tWhy the Sexual mode of Reproduction?Advantages of sexual reproduction over asexual reproduction:(i) Sexual reproduction combines DNA from two individuals (male and female) due to which the offspring has lot of variations. On the other hand, in asexual reproduction, only the DNA of one individual is copied due to which the variations in the offspring are extremely small.(ii)Due to lot of variations, sexual reproduction allows species to change to more advanced forms from one generation to the next and speed up evolution whereas asexual reproduction does not allow a species to change much from one generation to the next and hence, evolution becomes very slow.\xa0\xa0The sexual reproduction in animals takes place in the following steps:(i) The male parent produces male gamete called sperms. The sperm is a small cell with a long tail (flagellum) for movement.(ii) The female parent produces female gamete called ova which is much bigger cell than the sperm, having a lot of cytoplasm.(iii) The sperm enters into the ovum and fuses with it to form a new cell called zygote and this process is called fertilisation.(iv) The zygote then divides again and again to form a large number of cells and ultimately the zygote grows and develops to form a baby. | |
| 68027. |
Why do plants need nitrogen?How do plants obtain nitrogen? |
| Answer» nitrogen is a vital compound that should present in the plants . this is a compound of chlorophyll and therefore considered for photosynthesis. this actually include basic elements that have been discover with plant and animal protein. | |
| 68028. |
Why does the ionic bond between Na and Cl in water break? |
| Answer» At the molecular level, salt dissolves in water due to electrical charges and due to the fact that both water and salt compounds are polar, with positive and negative charges on opposite sides in the molecule. The bonds in salt compounds are called ionic because they both have an electrical charge—the chloride ion is negatively charged and the sodium ion is positively charged. Likewise, a water molecule is ionic in nature, but the bond is called covalent, with two hydrogen atoms both situating themselves with their positive charge on one side of the oxygen atom, which has a negative charge. When salt is mixed with water, the salt dissolves because the covalent bonds of water are stronger than the ionic bonds in the salt molecules.The positively-charged side of the water molecules are attracted to the negatively-charged chloride ions and the negatively-charged side of the water molecules are attracted to the positively-charged sodium ions. Essentially, a tug-of-war ensues with the water molecules winning the match. Water molecules pull the sodium and chloride ions apart, breaking the ionic bond that held them together. After the salt compounds are pulled apart, the sodium and chloride atoms are surrounded by water molecules, as this diagram shows. Once this happens, the salt is dissolved, resulting in a homogeneous solution. | |
| 68029. |
Pdf of chapter 3 in chemistry |
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Answer» NCERT Book app dawnload kar lo Catalysis |
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| 68030. |
What makes an electric current flow in a wire?? |
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Answer» Flow of electrons It is the potential difference which makes electric charges flow. Electricity is the flow of charges.. Flow of Electrons Potential difference Flow of electron |
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| 68031. |
Why does menstruation occur. |
| Answer» In females, only one egg is released from a single ovary every month. Every month, the uterus prepares itself to receive the embryo in case fertilization occurs. But if fertilization fails to occur, the uterine wall is breaks, so that it can be prepared for the ovary which will be released in the following month. Hence, to discard the unwanted uterine endometrial lining and the egg which is not fertilized, menstruation occurs in human females in a cycle of 28 days. | |
| 68032. |
what do you mean by the process plaster of paris |
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Answer» Used in making chalks Plaster of Paris is prepared by heating gypsum at 373 K. On heating, it loses water molecules and becomes calcium sulphate hemihydrate (CaSO4.1/2 H2O) which is called Plaster of Paris.\xa0Plaster of Paris is used in hospitals for setting fractured bones in the right position to ensure correct healing. |
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| 68033. |
Best science side book for cbse board? |
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Answer» S chand NCERT, xamidea , s chand S Chand Xamidea S chand |
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| 68034. |
How is vegetative reproduction beneficial to horticulture industry ? |
| Answer» Horticulture is an important part of agriculture with many important crops being vegetatively propagated. The objectives of this work were to discuss some of the most important characteristics of vegetatively propagated crops and the breeding strategies to develop and propagate new cultivars. Vegetative propagation enables to fix favorable combinations of important traits, very specific chemical compositions, superior genetic variance interactions and high levels of heterozygosity. Breeding new cultivars involve few possibilities of genetic recombination by sexual reproduction and many generations of selection and vegetative propagation. Marker assisted selection should be useful for genotyping and selecting complementary parents for crossing and for identifying superior genotypes at early stages of selection. The tissue culture technique enables to get disease free stock plants and to maximize its multiplication rate, having an important role in yield and quality of these crops. | |
| 68036. |
From the following list of atoms choose isotope,isobars,isotones |
| Answer» Isotopes are elements with same atomic number but different mass which in this case is\xa011\u200bNa22\xa0and\xa011\u200bNa24.Isobars are elements with same number of nucleons which in this case are\xa012\u200bMg24\xa0and\xa011\u200bNa24.Isotones are elements with same number of neutrons, which in this case are\xa011\u200bNa24\xa0and\xa010\u200bNe23.\xa0 | |
| 68037. |
What is the most important criterion to decide whether something is alive ? |
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Answer» Movement The most important criteria to decide that something is alive is the movement. The criteria we use to decide whether something is alive or not are:-♤ Whether there is a movement♤ Respiration♤ Respond to stimuli♤ Exhibits growth & development♤ It remove its metabolic wastes |
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| 68038. |
What do you mean by sexual relationship. |
| Answer» Pls don\'t ask such ques. | |
| 68039. |
Why and how does water enter continuously into the root system |
| Answer» Cells of the root are in close contact with soil and actively take up ions. The ion concentration increases inside the root and hence, osmotic pressure increases the movement of water from the soil into the root, which occurs continuously. | |
| 68040. |
Can i have the pictures of all the map in chapter 5 of geography urgently please help me out |
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Answer» And you wouldn\'t purchase the exammate Contect me MANISH KAUSHIK IN FB I\'d is Manish pandat Ok Purchase the exam mate 2021 It is very best book ? for exam It includes all the important maps chapter wise Okk just I will solve this |
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| 68041. |
Please tell me about Trigonometry chapter 9 . I know but tell me without rhyme. |
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Answer» Who are you. And this app is only for asking questions and solving other students doubt and questions. Ok Hllo |
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| 68042. |
How to balance equation ??. This is important please tell me . |
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Answer» @Shubham Saxena my problem is that whenever I am writing a question on this site my question gets automatically removed. It is not allowing me to ask questions. I can just answer someone\'s else question. I don\'t know why it\'s happening. ? welcome it\'s my pleasure? ?? Thank you for answering . Welldone. Identify each element found in the equation. The number of atoms of each type of atom must be the same on each side of the equation once it has been balanced.If possible, start with an element found in one compound on each side of the equation. Change the coefficients (the numbers in front of the compound or molecule) so that the number of atoms of the element is the same on each side of the equation. Remember, to balance an equation, you change the coefficients, not the subscripts in the formulas.Once you have balanced one element, do the same thing with another element. Proceed until all elements have been balanced. It\'s easiest to leave elements found in pure form for last.Check your work to make certain the charge on both sides of the equation is also balanced. An equal number of atom in each reactant and pruduct this is called balance equation |
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| 68043. |
Main points to remember for the lesson reflection of light at curved surface |
| Answer» (a) Angle of incidence is equal to the angle of\xa0reflection\xa0. (b) The incident ray, the\xa0reflected\xa0ray and the normal all lie in the same plane.\xa0Curved\xa0mirrors are classified as\xa0spherical\xa0mirrors or parabolic mirrors depending upon thecurvature\xa0of the\xa0mirror. | |
| 68044. |
What is the formula of blue vitriol? |
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Answer» Cuso4.5H2O Copper sulphate CuSO4. Is the chemical formula of blue vitriol.Ok |
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| 68045. |
Previous years questions with solution |
| Answer» | |
| 68046. |
What is the difference between series and parallel connection? Give 3 differences. |
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Answer» Good I have a good news Great we happy What is your fb id \tSeriesParallelThe same amount of current flows through all the componentsThe current flowing through each component combines to form the current flow through the source.In an electrical circuit, components are arranged in a lineIn an electrical circuit, components are arranged parallel to each otherWhen resistors are put in a series circuit, the voltage across each resistor is different even though the current flow is the same through all of them.When resistors are put in a parallel circuit, the voltage across each of the resistors is the same. And even the polarities are the sameIf one component breaks down, the whole circuit will burn out.Other components will function even if one component breaks down, each has its own independent circuitIf\xa0Vt\xa0is the total voltage then it is equal to V1+V2+V3If\xa0Vt\xa0is the total voltage then it is equal to V1=V2=V3\t |
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| 68047. |
what are lenses and its type ? |
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Answer» Lens\xa0: A lens is a piece of a transparent, refracting medium bounded by two surfaces, of which one is atleast a curved surface.\xa0The commonly used lenses are the spherical lenses, which have either both surfaces spherical or one spherical and the other a plane one.\xa0Spherical lenses are of two main types:1) Convex or converging lens: A lens which is thicker at the centre than at the edges is called a convex lens. It converges a parallel beam of light on refraction through it and has a real focus.\xa02) Concave or diverging lens:\xa0The lens which is thinner at the centre than at the edges is called a concave or diverging lens. It diverges a beam of light on refraction through it or we can say a ray of light which is incident on the surface of the mirror, appears to converge after refraction. Hence, it has a virtual focus.\xa0 English answer ಕನ್ನಡ |
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| 68048. |
Why acids are not stored in metal containers ?? |
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Answer» React with metal to mske the food acidic Thank you for answering . Welldone Strong acid for example,are best stored in PMP or HDPE container this is partly because these plastics are chemically inert and so won\'t react with the substance. For this reason it is not suitable to store certain chemicals in metal container as they are likely to corrode. Bcoz acid react with metalsFor example If u will keep onion in aluminum foil so it will react and makes an unpleasant smell |
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| 68049. |
Define the electrical energy with SI unit ?? |
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Answer» Thank you for answering akhya. Work done per unit time is called electrical energy. Its si unit is joule. Good Ok thanks for answering. Welldone...... It is defined as the product of power and time.si unit is kWh |
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| 68050. |
How many joule are in there 1 kWh ?? |
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Answer» 3.6 ×10^6 joule Thank you for answering my question. 3.6×10^6 Thank you for answering my question .......... 3.6×10⁶ joule |
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