InterviewSolution
Saved Bookmarks
InterviewSolution
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.
| 68401. |
Digestion of food in human aim |
|
Answer» Thanks The digestion process takes place in the following steps.IngestionThe very first step involves mastication (chewing). The salivary glands, along with the tongue, helps to moisten and lubricate food, before being pushed down into the food pipe.Mixing and MovementIt involves the process of lubricating and manipulating food and pushing it down the food through the food pipe (using\xa0peristalsis), and into the stomach.SecretionThe stomach, small intestine, liver, and pancreas secrete enzymes and acids to aid the process of digestion. It functions by breaking down food particles into simple components and easily absorbable components.DigestionThe process of converting complex food particles into simpler substances in the presence of enzymes and acids secreted by different digestive organs.AbsorptionThis process begins in the small intestine where most of the nutrients and minerals are absorbed. The excess water in the indigestible matter is absorbed by the large intestines.ExcretionThe process of removing indigestible substances and waste by-products from the body through the process of defecation.In short, the digestion process consists of the six following steps:Ingestion\xa0⇒Mixing and Movement\xa0⇒\xa0Secretion\xa0⇒\xa0Digestion\xa0⇒Absorption\xa0⇒Excretion |
|
| 68402. |
Write any 2observations while burning magnesium ribbon in air |
|
Answer» Observations: Magnesium ribbon burns with dazzling light and white substance is formed which is magnesium oxide. This happens due to following chemical reaction: 2Mg(s) + O2\xa0(g) ====> 2MgO\xa0(s)Results: Burning of magnesium in presence of oxygen to form magnesium oxide is a combination reaction. The flame provides a source of heat so that the magnesium metal atoms can overcome their activation energy. Activation energy is the minimum energy required in order for a chemical reaction to proceed. When the magnesium metal burns it reacts with oxygen found in the air to form Magnesium Oxide. |
|
| 68403. |
What is heterotropic |
|
Answer» Those nutrition in which the organism do not make thier own food Heterotrophic nutrition is the mode of nutrition in which an organism depends on other living organisms for food.Depending on the type of food, heterotrophs can be divided into 3 types-\tCarnivores- organisms which eat only animals. Example- lion, snake.\tHerbivores- organisms which eat only plants. Example- rabbit, elephant.Omnivores- organisms which eat both plants and animals. Example- crow, dog. A heterotroph is an organism that cannot produce its own food, instead taking nutrition from other sources of organic carbon, mainly plant or animal matter. In the food chain, heterotrophs are primary, secondary and tertiary consumers, but not producers. Heterotrophic nutrition is the mode of nutrition in which an organism depends on other living organisms for food.Depending on the type of food, heterotrophs can be divided into 3 types-\tCarnivores- organisms which eat only animals. Example- lion, snake.\tHerbivores- organisms which eat only plants. Example- rabbit, elephant.Omnivores- organisms which eat both plants and animals. Example- crow, dog. |
|
| 68404. |
Where is the high potential is found in a battery |
| Answer» At the positive terminal...because the current flows from positive to negativeHope this helps! | |
| 68405. |
What is human respiration |
|
Answer» The\xa0respiratory system\xa0is the network of\xa0organs\xa0and tissues that help you breathe. It includes your airways,\xa0lungs, and blood vessels. The muscles that power your\xa0lungs\xa0are also part of the\xa0respiratory system. These parts work together to move oxygen throughout the body and clean out waste gases like carbon dioxide I don\'t know |
|
| 68406. |
To prove focal length is half of radius of curvature. |
|
Answer» Focal length and radius of curvature:\tLet F be focus and C be center of curvature of a concave mirror.\tConsider an incident ray travelling parallel to principle axis and meet at point N.\tIt passes through focus after reflection.\tCN is the normal drawn to the mirror(normals drawn to mirror meet at C).\tNow, PC = R PF = f ∠FNC = ∠FCN =\xa0 ∠MFN = 2\xa0\tIn ΔMNC [For paraxial rays, M and P coincide]\tIf\xa0\xa0is small,\xa0 ------------------------(1)\xa0\tIn ΔMNF [For paraxial rays, M and P coincide]\tIf\xa0\xa0is small,\xa0 ------------------------(2)\tSubstituting (1) in (2), we get 2PF = PC R = 2f f = R/2\tTherefore, focal length is half the radius of curvature.\xa0\xa0In fig, theta is taken instead of alpha.\xa0\xa0 Taking a concave mirror, the\xa0curved mirror will have a principal axis near which a ray of light is incident\xa0on the mirror parellel to it.Now the angle between\xa0the radius of curvature and principal axis will be equal to the angle at which ray is incident\xa0and due to reflections law incident angle would be equal to angle cbf. L abc = L cbf (law of reflection) L abc = L fcb ( alternate)Hence,\xa0cbf = fcb ⇒ bf = fcSince b very close to\xa0p; pf = fc ⇒ pc = 2 pfNow considering convex mirror, similar to concave mirror\xa0L abn = L nbd\xa0{reflection law}L abn = Lbcf {corresponding}Hence,\xa0bf = fcSince, b is very close to\xa0p, pf = fc ⇒ pc = 2pfHence, in both cases\xa0Radius is double the focal length. |
|
| 68407. |
Explanation of structure of nephron biology Ch 6 cass10 |
|
Answer» Thanks Structure\xa0of\xa0Nephron\xa0:-Nephron is the filtration unit of kidney. It consists of a tubule which is connected with collecting duct at one end and a cup – shaped structure at the other end.This cup-shaped structure is called ‘Bowman’s capsule’. Every Bowman’s capsule contains a cluster of capillaries, called ‘Glomerulus’, within the cup – shaped structure. The blood enters into Glomerulus through arteriole of renal artery.\xa0Functioning\xa0of\xa0Nephron\xa0:-1.\xa0Filtration: Filtration of blood takes place in Bowman’s capsule from the capillaries of glomerulus. The filtrate passes into the tubular part of the nephron. This filtrate contains glucose, amino acids, urea, uric acid, salts and a major amount of water.2.\xa0Re-absorption: As the filtrate flows along the tubule useful substances such as glucose, amino acids, salts and water are selectively re-absorbed into the blood by capillaries surrounding the nephron tubule.The amount of water re-absorbed depends on the need of the body.3.\xa0Urine: The filtrate which remains after re-absorption is called urine. Urine contains dissolved nitrogenous waste, i.e. urea and uric acid, excess salts and water. Urine is collected from nephrons by the collecting duct to carry it to the ureter. Structure of a Nephrons:\tNephrons are the basic filtering units of kidneys.\tEach kidney possesses large number of nephrons, approximately 1-1.5 million.\tThe main components of the nephron are glomerulus, Bowman’s capsule, and a long renal tubule. |
|
| 68408. |
What is the focal length of a lens whose radius of curvature is 30 cm.?? |
|
Answer» Radius of curvature,r=30cmFocal lenght, f =?Now, f=R/2 f= 30/2 Therefore, f=15 cm \xa0Radius of curvature R = 30 cmRadius of curvature = 2\xa0×\xa0Focal length (f)R = 2 fHence, the focal length of the given convex mirror is 15\xa0cm. |
|
| 68409. |
Why does distilled water not conduct electricity, whereas , rain water does? |
|
Answer» Ye Kya inke answers hai Distilled water is pure form of water which do not contain any solute in it. Therefore it cannot conduct electricity because it does not contain ions while rain water contains dissolved salts and acids which dissociates in ions and\xa0conducts electricity. |
|
| 68410. |
Q. Name a cyclic unsaturated carbon compound. |
|
Answer» Benzene One such\xa0compound\xa0is benzene. In benzene, six\xa0carbon\xa0atoms form a ring structure and there are three single and three double bonds between the\xa0carbon\xa0atoms. We can draw the structure of benzene as: Hence, benzene can be taken as an example of a\xa0cyclic unsaturated carbon compound. Mg Benzene |
|
| 68411. |
What are the various parts of the human circulatory system |
|
Answer» The circulatory system consists of three independent systems that work together: the heart (cardiovascular), lungs (pulmonary), and arteries, veins, coronary and portal vessels (systemic).\xa0The system is responsible for the flow of blood, nutrients, oxygen and other gases, and as well as hormones to and from cells. Circulatory System:\xa0The circulatory system is responsible for transport of various substances in human beings. It is composed of the heart, arteries, veins and blood capillaries. Blood plays the role of the carrier of substances. |
|
| 68412. |
On what factors do the resistance of cinducter depend |
|
Answer» ◇On its length◇ On its area of cross section◇ On the nature of the material 1. Length of conductor: The resistance\xa0(R)\xa0of a conductor is directly proportional to its length\xa0(l).R∝lIf we increase the length of a conductor, its resistance increases since only less amount of current can pass through it. If we reduce the length of a conductor, the resistance decreases since more current can pass through it.2. Area of cross-section: Area of the cross-section is inversely proportional to the resistance.R∝1 / AIf we double the area of cross-section, the resistance will be half. So, electricity can. That\'s why we are using thick wires for the heavy electrical loads.3. Nature of material: Conductors offer less resistance compared to insulators. That’s why we are using plastic materials for electrical insulation purposes like switches, coatings etc.Effect of temperature: Resistance of pure metals are showing a direct relationship with temperature. But generally, alloys like nichrome won’t show that much change in resistance with respect to the temperature. The resistance of semiconductors decreases with increasing temperature.From these conclusions, we can conclude that,R∝l / AThe proportionality constant is known as resistivity\xa0(ρ).R=ρ l / AResistivity is a measurable property that quantifies how strongly a given material opposes the electric current flow. It depends upon the dimension of the material. It is also known as specific electrical resistance. It is inverse to conductivity. Its unit is\xa0ΩIf we are considering unit measurements, we can say that; the electrical resistivity of a material is the resistance of the material per unit length and per unit cross-sectional area at a specified temperature.\xa0 Can you explain them?? A n s w e r:The resistance of the conductor depends on the following factors:\tThe temperature of the conductor\tThe cross-sectional area of the conductor\tLength of the conductor\tNature of the material of the conductor |
|
| 68413. |
Define Valency . |
| Answer» Valency is the combining power or the combining capacity of an atom. The number of electrons gained, lost or shared by an atom so as to achieve the nearest noble gas configuration gives us valency. | |
| 68414. |
Why is the refractive index of the atmosphere different from different layer |
|
Answer» As we move above the Earth’s surface, the density of air goes on decreasing. There is a gradual increase in the refractive index from the atmosphere to the Earth’s surface. Thus, the refractive index of the atmosphere is\xa0different at different altitudes. Due to different optical density of different layers |
|
| 68415. |
State Fleming left hand rule write working principle of electric motor |
| Answer» There is no electric field near a long, straight-thin uniform current-carrying conductor. Therefore, a charged particle moving parallel to the conductor experiences a magnetic force, as per the electrodynamics. The left hand Fleming rule came into existence through John Ambrose Fleming in the 19th Century. It was the simplest approach to understand the direction of the motion or the direction of the electric current. The left-hand rule of Fleming states that when we stretch the forefinger and middle finger of the left hand in a manner that they are mutually perpendicular to each other.\xa0Now, if the forefinger is taken as the direction of the current and the middle finger towards the magnetic field then the thumb points towards the motion of the conductor or the force. It is one of the rules of electricity. The reason being when a current-carrying the conductor comes under the magnetic field there is likely to be a force acting on the conductor. With the help of Fleming\'s left-hand rule, the director of the force can be determined.\xa0Usage of The RuleGenerally, Fleming\'s left-hand rule is used for electric motors. On the other hand, for electric generator the right-hand rule is applicable. The reason why the left-hand rule of Fleming is used in the electric motor because in the electric motor there is the presence of magnetic field and electric current which leads to the force that enables creating the motion. This can be referred to as the effect. Hence, the left-hand rule is used. It thus gives us the direction of the force that works on the current if well aware of the magnetic field.\xa0There is a need for different hands for motors and generators because there is a certain amount of difference between the effect and the cause. To elaborate that, the magnetic field and the electric current creates the force which results in motion and that is why the left hand is used. While the motion and the magnetic field exist in the electric generator and they create the current which is why the right hand is used. The physical basis for the rules that are to be remembered is that the electrons flow in the same direction from where they generate a cylindrical magnetic field that encircles around the conductor.\xa0 | |
| 68416. |
What is Cardeta and non Cardeta and gives some examples |
| Answer» \xa0\t\xa0CHORDATES\xa0NON-CHORDATES1) Animal having a notocord or backbone in their body structure are called chordates.1) Animals\xa0without a notochord are called non-chordates.2) Central nervous system is hollow and dorsal.2) It is solid and ventral.3) Heart is ventrally placed.3) If present, it is on the dorsal side.4) Haemoglobin is present in the RBCs.4) If present, it is dissolved in the plasma.5) Post **** tail is present.5) It is absent in them.6)\xa0Pharyngeal gill slits is present at some stage of life.6) It is absent in them.\t | |
| 68417. |
What is formula of ethanoic acid? |
|
Answer» CH3COOH CH3COOH Formula For ethanoic Acid - CH₃COOH A n s w e r : formula of ethanoic acidCH₃COOH.Acetic acid, systematically named ethanoic acid, is a colourless liquid organic compound with the chemical formula CH₃COOH. When undiluted, it is sometimes called glacial acetic acid.\xa0 |
|
| 68418. |
upto which elements, the law of octaves was found to be aaplicable |
|
Answer» Ok Up to calcium Upto calcium The law of octave was applicable upto calcium only. |
|
| 68419. |
Reactions of water with hydroxide ? |
|
Answer» When sodium hydroxide (NaOH) dissolves in water, it separates into positively - charged sodium ions (cations) and negatively - charged hydroxide ions (anions). ... Each mole of sodium hydroxide that dissolves will produce one mole of sodium ions and one mole of hydroxide ions. The hydroxide ions combine with the bicarbonate ions in the water to produce water and a carbonate ion. |
|
| 68420. |
Define term volt |
|
Answer» The 1 joul of work done to carrying 1 column of charge from infinity to the point is known as 1 volt When 1joule of work is done to move 1coulomb of charge then it is called 1volt.V=W/Q OR V=J/C Volt: Volt is the unit of potential difference between two points. If 1 joule work is done to move 1 coulomb positive charge from one point to another, then the potential difference between the points is 1 volt.IV = 1JC-1One volt is also defined as the potential difference across a resistance of 1 Ohm when 1 ampere of current flows through it. Volt: Volt is the unit of potential difference between two points. If 1 joule work is done to move 1 coulomb positive charge from one point to another, then the potential difference between the points is 1 volt.IV = 1JC-1One volt is also defined as the potential difference across a resistance of 1 Ohm when 1 ampere of current flows through it. |
|
| 68421. |
In which group metalloid present in periodic table |
|
Answer» Groups\xa013–16 of the\xa0periodic table\xa0of p block are the only\xa0groups\xa0that contain elements classified as\xa0metalloids. Unlike other\xa0groups\xa0of the\xa0periodic table, which contain elements in just one class,\xa0groups\xa013–16 contain elements in at least two different classes.Boron (B), Silicon (Si), Germanium (Ge), Arsenic (As), Antimony (Sb), Tellurium (Te), Polonium (Po). Here we can see that these seven elements were classified as metalloids in the periodic table from the 13th to the 16th group of p-block. Groups\xa013–16 of the\xa0periodic table\xa0of p block are the only\xa0groups\xa0that contain elements classified as\xa0metalloids. Unlike other\xa0groups\xa0of the\xa0periodic table, which contain elements in just one class,\xa0groups\xa013–16 contain elements in at least two different classes.Boron (B), Silicon (Si), Germanium (Ge), Arsenic (As), Antimony (Sb), Tellurium (Te), Polonium (Po). Here we can see that these seven elements were classified as metalloids in the periodic table from the 13th to the 16th group of p-block. |
|
| 68422. |
What are basic and acid radicals? What other word we use at the place of radicals? |
|
Answer» Wht r radicals? \tAcid radicalsNegatively charged radicals are called acidic radicals.Acid radicals are formed by removal of hydrogen ion (H+).Example: H2S04\xa0loses one H+\xa0ion to form HSO4–\xa0ion.\t\xa0\tBasic radicalsPositively charged radicals are called a basic radical.Basic radicals are formed by the removal of hydroxide ion (OH–).Example: KOH loses OH–\xa0ion and becomes K+\xa0ion.\t |
|
| 68423. |
Domestic electricity consumption in delhi and sikkim |
| Answer» | |
| 68424. |
A metal wire of initial resistance is bent 2 times equally. Find the resistance and resistivity |
| Answer» The electrical resistance of a wire would be expected to be greater for a longer wire, less for a wire of larger cross sectional area, and would be expected to depend upon the material out of which the wire is made.The resistance of a wire can be expressed as\xa0R=ρ L/A\u200b,\xa0where,ρ\xa0- Resistivity - the factor in the resistance which takes into account the nature of the material is the resistivityL - Length of the conductorA - Area of cross section of the conductor.From this relation, we observe that the length is directly proportional to the resistance and the area of cross section is inversely proportional to the resistance.That is, if L becomes 2 L, R becomes 2 R.\xa0R′=ρ 2L\u200b/A. So, R = 2R\'.Hence, If the length of a wire is doubled, then its resistance becomes 2 times. | |
| 68425. |
Why does the sky appears blue not voilet .???? |
|
Answer» ?????????? The clear sky appears blue is due to Rayleigh scattering of sunlight. The molecules in the air scatter blue light from the sun more than they scatter violet light |
|
| 68426. |
Save the tiger campaign is overemphasized nowadays.what would be the possible reason ? |
|
Answer» Kya pata As tigers are getting extinct nowadays |
|
| 68427. |
What r villi? |
|
Answer» Villi- The tiny projections on the inner surface of the small intestine which help in absorbing the digested food are called Villi. The tiny projections on the inner surface of the small intestine which help in absorbing the digested food are called villi. Vili are present in small intestine The tiny projections on the inner surface of the small intestine which help in absorbing the digested food are called villi. These helps to increase the surface area of intestinal walls.LocationThese are located in the inner walls of the small intestine.Functions\tTheir function is to increase the surface area of the small intestinal wall for absorption of the digested food.\tThese projections absorb the protein molecules and help in the transfer of the proteins to all cells and tissues.\tMany blood vessels are present within these villi, that help in the absorption of digested food and carry it to the bloodstream. Later, from the bloodstream, the absorbed food is delivered to each and every cell of the body. |
|
| 68428. |
Give two functions of hcl in the human stomach.. |
|
Answer» ● It helps to kill bacteria in the stomach which goes through the food. ● HCL converts pepsinogen which is not active into pepsin to metabolite proteins in our stomach. #HCl helps to kill bacteria and help in digestion. HCl is kill the bacteria in the stomach \tHydrochloric acid is an essential acid in the stomach.\tIt helps destroy bacteria, as well as other harmful species.\tIt also works as a preservative of food.\tHCl converts pepsinogen which is not active into pepsin to metabolize\xa0proteins\xa0in our stomach. |
|
| 68429. |
Point wise female reproductive system |
|
Answer» Nice xxx Uterus,fallopian tube,ovary,cervix,****** etc. It consist of Ovaries,oviduct,fallopian tubes,uterus,******.1)Ovaries:They are oval shaped organ, inside abdominal cavity.There are 2 ovaries, makes egg or ova and *** hormones, composed of thousand of follicles.At puberty these follicles mature to form ripe egg.2)Oviducts:Above the ovaries,not connected directly to ovaries but have funnel shaped opening which almost cover ovaries.The egg released by an ovary goes into oviduct through funnel shaped opening.Fertilisation take place in oviduct.3)Uterus:The two oviducts connect to a bag like organ called uterus.the growth and development of fertilised egg take place in uterus.4)Cervix:Uterus is connected through a narrow opening called cervix to another tube called\xa0******. |
|
| 68430. |
Ch 1 question 1 |
| Answer» Question 1Which of the statements about the reaction below are incorrect ?2 PbO(s) + C(s) → 2Pb (s) + CO2(g)(a) Lead is getting reduced.(b) Carbon dioxide is getting oxidised.(c) Carbon is getting oxidised.(d) Lead oxide is getting reduced.(i) (a) and (b)(ii) (a) and (c)(iii) (a), (b) and (c)(iv) AllAnswer:(i) (a) and (b) | |
| 68431. |
Write advandages & disadvandages of dam |
|
Answer» Why photosynthesis is considered an endothermic reaction? Ndn Advantages :1}These are the main source of power generation.2}These projects control the floods because water can be stored in them. These projects have converted many, \'rivers of sorrows\' into \'rivers of boon\'.3}Thes projects are the main source of irrigation and also help in conserving soil.\xa0Disadvantages:1}Dams also fragment rivers making it difficult for aquatic fauna to migrate for spawning, i.e , to produce eggs.2}It resulted in displacement of local communities.3}The multipurpose projects induced earthquake, caused waterborne diseases...... |
|
| 68432. |
2 functions of placenta |
|
Answer» 1. It helps in transfer of food ,water ,nutrition to the developing baby.2. It helps in the excretion and the blood vessels are joined separately from mother body Functions of placenta\tThe placenta is the passage that unites the fetus to the mother.\tTransmission of nutrients and oxygen from mother to the fetus and the release of carbon dioxide and waste materials from the fetus takes place through the placenta. |
|
| 68433. |
Name the process of convarting vegetable oil to vegetable gher |
| Answer» The conversion of vegetable oil to vegetable ghee is called hydrogenation reaction. | |
| 68434. |
Explain incomplete dominance and Co dominance |
|
Answer» Thanks Incomplete dominance: When none of the factors of a gene is dominant, the phenotype of a heterozygous dominant individual is a blend of dominant and recessive traits. For example, flower colour in\xa0Mirabilis jalapa.Co-dominance: When both recessive and dominant traits are expressed in a heterozygous genotype. This means that none of the factors is recessive but both can express themselves irrespective of their presence in homozygous or heterozygous condition. For example,\xa0IA\xa0and\xa0IB\xa0alleles of I gene of ABO blood group.\xa0 |
|
| 68435. |
How the photosinythisis occurs in plants |
|
Answer» Photosynthesis takes place inside plant cells in small objects called chloroplast . Plants get carbon dioxide from the air through their roots. Light energy comes from the sun. The oxygen produced in released into the air from the leaves Please tell me in detail With clorophil |
|
| 68436. |
Defin calorific value. |
|
Answer» Calorific value is the amount of heat energy present in food or fuel and which is determined by the complete combustion of specified quantity at constant pressure and in normal conditions. It is also called calorific power . The unit of calorific value is kilojoule per kilogram The energy contained in a fuel or food determined by measuring the heat produced by the complete combustion of a specified quantity of it. This is now usually expressed in joules per kg. the energy contained in a fuel or food, determined by measuring the heat produced by the complete combustion of a specified quantity of it. This is now usually expressed in joules per kilogram. The amount of heat produced by burning a unit mass of the fuel completely is known as its\xa0calorific value. The unit of mass usually taken for measuring the\xa0calorific value\xa0of a fuel is “gram”. The amount of heat produced by burning 1 gram of a fuel completely is called its\xa0calorific value |
|
| 68437. |
Which part of eye controls the amount of light entering through our eye?briefly explain |
|
Answer» Iris Iris Pupil IrisIris is the ring of pigmented tissue surrounding the pupil that varies in color from person to person, it contract and dilates to control the amount of light entering the eye through the pupil. The pupil is the opening in the center of the iris where light enters the eye.\xa0 |
|
| 68438. |
What is the source of energy used by plant in photosynthesis |
|
Answer» Light energy Light energy Light energy Carbohydrates During the process of photosynthesis, cells use carbon dioxide and energy from the\xa0Sun\xa0to make\xa0sugar\xa0molecules and oxygen. These\xa0sugar\xa0molecules are the basis for more complex molecules made by the photosynthetic cell, such as\xa0glucose. |
|
| 68439. |
What is thermal decomposition reaction? |
|
Answer» A thermal decomposition reaction can be defined as a decomposition reaction which is activated by thermal energy. In other words, a thermal decomposition reaction requires energy to be supplied to the reactants in the form of heat. Such reactions are generally endothermic since energy is required to break the chemical bonds and separate the constituent elements. A common example of a thermal decomposition reaction is provided below.CaCO3\xa0→ CaO + CO2When heated, calcium carbonate decomposes into calcium oxide and carbon dioxide. This process is employed in the manufacturing of quick lime, which is an important substance in many industries. Thermal decomposition reaction is a reaction which use heat/thermal to dissociate a single compound into two or more compounds |
|
| 68440. |
Write any two homologue of ethanol. |
|
Answer» C2 H6 OH AND CH3 OH CH3OHC2H6OH Answer fast ? |
|
| 68441. |
Name two homologue of ethanol Answer fast ??? |
| Answer» Ethane + alcohol that means eth-ene- alchol | |
| 68442. |
Short summary of Bio environment |
| Answer» Biotic (or biological) environment:\xa0It includes :\tPlants.\tAnimals (including human beings).\tDecomposers (bacteria and.fungi).Other important constituents of the biotic environment includes Kites and vultures as they feed on dead organisms and act as scavengers (cleansing agents) of the environment. | |
| 68443. |
Which nutrient is not digested in human\'s stomach????? |
|
Answer» Cellulose Cellulose Cellulose because it digested by those type of living beings have longest large intestine to digest it Cellulose it\'s digest in appendix CelluloseThe digestive system of Humans has many enzymes, and acids to break down and digest all kinds of different foods (carbohydrates. proteins and fats), but do not have the enzymes needed to break down cellulose. Cows, Goats, Sheep and other animals that graze on many organic foods(For example, grass) do have the enzymes needed to break down cellulose. Hence The part of food that is not digested in the body is Cellulose because the cellulose-digesting enzyme is absent. |
|
| 68444. |
Define refractive index, |
|
Answer» Refractive index (n) :- is defined as the ratio of speed of light in air to the speed of light in medium Refractive index is a physical value which gives us a measure of ratio of speed of light in m1 to speed of light in m2 The ratio between the speed of light in medium to speed in a vacuum is the refractive index. When light travels in medium other than the vacuum, the atoms of that medium continually absorb and re-emit the particles of light, slowing down the speed light.The formula of the refractive index is as follows:\xa0n=c / vWhere,\xa0n is the refractive indexc is the velocity of light in a vacuum ( 3 × 108 m/s)v is the velocity of light in a substance |
|
| 68445. |
State between Magnetic field depends due to current carrying circular wire and straight wire |
|
Answer» Strength\xa0of magnetic field\xa0is directly proportional to\xa0current. Strength\xa0of magnetic field\xa0is inversely proportional to radius\xa0of circular wire. Straight wire m agar upper force hogi to anti-clockwise direction hogi magnetic field ki agar force niche ho to clock wise or circular m agar clock wise direction to north pole otherwise south pole |
|
| 68446. |
can i get deleted portion of 2021 plz |
|
Answer» BSE Class 10 Science (086) - Deleted portion (Theory):Unit I: Chemical Substances - Nature and Behaviour ChapterTopicsMetals and Non-metalsBasic metallurgical processes; Corrosion and its prevention.Carbon CompoundsNomenclature of carbon compounds containing functional groups (halogens, alcohol, ketones, aldehydes, alkanes and alkynes), difference between saturated hydro carbons and unsaturated hydrocarbons. Chemical properties of carbon compounds (combustion, oxidation, addition and substitution reaction). Ethanol and Ethanoic acid (only properties and uses), soaps and detergents.Unit II: World of Living ChapterTopicsControl and co-ordination in animals and plants(Whole Chapter Removed)Tropic movements in plants; Introduction of plant hormones; Control and co-ordination in animals: Nervous system; Voluntary, involuntary and reflex action; Chemical co-ordination: animal hormonesHeredity and EvolutionBasic concepts of evolutionUnit III: Natural Phenomena ChapterTopicsThe Human Eye and the Colourful WorldFunctioning of a lens in human eye, defects of vision and their corrections, applications of spherical mirrors and lensesUnit IV: Effects of Current ChapterTopicsMagnetic Effects of Current :Electric Generator, Direct current.Alternating current: frequency of AC, Advantage of AC over DC.Domestic electric circuitsUnit V: Natural Resources ChapterTopicsSources of Energy(Whole Chapter Deleted)Different forms of energy, conventional and non-conventional sources of energy: Fossil fuels, solar energy; biogas; wind, water and tidal energy; Nuclear energy. Renewable versus non-renewable sources of Energy.Management of Natural Resources(This chapter is to be prepared only for Internal Assessment. It will not be assessed in the Annual Board Examination)Conservation and judicious use of natural resources. Forest and wild life; Coal and Petroleum conservation. Examples of people’s participation for conservation of natural resources. Big dams: advantages and limitations; alternatives, if any. Water harvesting. Sustainability of natural resources https://10web.ncert.deleted.portion.2021./j/7Rlk0cGsxUjNPRTZ1NXptQ check ? here BSE Class 10 Science (086) - Deleted portion (Theory):\tUnit I: Chemical Substances - Nature and Behaviour ChapterTopicsMetals and Non-metalsBasic metallurgical processes; Corrosion and its prevention.Carbon CompoundsNomenclature of carbon compounds containing functional groups (halogens, alcohol, ketones, aldehydes, alkanes and alkynes), difference between saturated hydro carbons and unsaturated hydrocarbons. Chemical properties of carbon compounds (combustion, oxidation, addition and substitution reaction). Ethanol and Ethanoic acid (only properties and uses), soaps and detergents.Unit II: World of Living ChapterTopicsControl and co-ordination in animals and plants(Whole Chapter Removed)Tropic movements in plants; Introduction of plant hormones; Control and co-ordination in animals: Nervous system; Voluntary, involuntary and reflex action; Chemical co-ordination: animal hormonesHeredity and EvolutionBasic concepts of evolutionUnit III: Natural Phenomena ChapterTopicsThe Human Eye and the Colourful WorldFunctioning of a lens in human eye, defects of vision and their corrections, applications of spherical mirrors and lensesUnit IV: Effects of Current ChapterTopicsMagnetic Effects of Current :Electric Generator, Direct current.Alternating current: frequency of AC, Advantage of AC over DC.Domestic electric circuitsUnit V: Natural Resources ChapterTopicsSources of Energy(Whole Chapter Deleted)Different forms of energy, conventional and non-conventional sources of energy: Fossil fuels, solar energy; biogas; wind, water and tidal energy; Nuclear energy. Renewable versus non-renewable sources of Energy.Management of Natural Resources(This chapter is to be prepared only for Internal Assessment. It will not be assessed in the Annual Board Examination)Conservation and judicious use of natural resources. Forest and wild life; Coal and Petroleum conservation. Examples of people’s participation for conservation of natural resources. Big dams: advantages and limitations; alternatives, if any. Water harvesting. Sustainability of natural resources.\t |
|
| 68447. |
Force =I/b explain chapter physics |
| Answer» | |
| 68448. |
Indicate the energy flow in an ecosystem .why is it unidirectional ? Justify your answer |
| Answer» Flow of energy in an ecosystem is as follows.\xa0\tThe green plants in a terrestrial ecosystem capture about 1% of the energy of sunlight that falls on their leaves and convert it into food energy.\xa0\tWhen green plants are eaten by primary consumers, a great deal of energy is lost as heat to the environment, some amount goes into digestion and in doing work and the rest goes towards growth and reproduction.\xa0\tAn average of 10% of the food eaten is turned into its own body and made available for the next level of consumers.\tTherefore, 10% can be taken as the average value for the amount of organic matter that is present at each step and reaches the next level of consumers.\xa0\tSince so little energy is available for the next level of consumers, food chains generally consist of only three or four steps.\xa0\tThe loss of energy at each step is so great that very little usable energy remains after four trophic levels.\xa0\tThere are generally a greater number of individuals at the lower trophic levels of an ecosystem, the greatest number is of the producers.\tThe length and complexity of food chains vary greatly.\xa0\tEach organism is generally eaten by two or more other kinds of organisms which in turn are eaten by several other organisms.\xa0\tSo instead of a straight line food chain, the relationship can be shown as a series of branching lines called a food web.Flow of energy is unidirectional because the energy that is captured by the autotrophs does not revert back to the solar input and the energy which passes to the herbivores does not come back to autotrophs.\xa0As it moves progressively through the various trophic levels it is no longer available to the previous level.Secondly, the energy available at each trophic level gets diminished progressively due to loss of energy at each level. | |
| 68449. |
Air is a metal or nonmetal.explain it in your own language |
|
Answer» Thanks for all of you Air is not an element, it is a compound.So it cannot be defined in metal or non-metal group Metals and non metals are referred to pure elements but air as whole is not an element , it is an compound and hence the question is irrelevant. Air is a non metal.. |
|
| 68450. |
What is a main process of intake of food |
|
Answer» Ingestion The process of intake of food and utilising it for all life processes is called nutrition.Ingestion: The intake of food is called ingestion. Method of ingestion, i.e. taking of food, varies from one animal to another. |
|