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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.
| 51351. |
What is electrovalent bond |
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Answer» Thank you Electrovalent bond is also called as ionic bondIn ionic bonding, electrons are completely transferred from one atom to another. In the process of either losing or gaining negatively charged electrons, the reacting atoms form ions. The oppositely charged ions are attracted to each other by electrostatic forces, which are the basis of the ionic bond. |
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| 51352. |
What is the advantage of a four chambered heart? |
| Answer» In four chambered heart , left half is completely separated from right half by septa. This prevents oxygenated and deoxygenated blood from mixing. This allows a highly efficient supply of oxygenated blood to all parts of the body. This is useful in animals that have high energy needs, such as birds and mammals . | |
| 51353. |
Prove ohms law |
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Answer» V is directly proportional to ITo ab hum proportionality ka sign remove karke R ka use karenge jisse formula ban ke aayega V=IR V=RI |
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| 51354. |
Mention the voltage and frequency of current that we receive at our house? |
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Answer» 50hertz and we get A.C(alternate.current) current in our house. Ha you don\'t know Voltage of current is 220V and frequency of current is 50 hertz. |
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| 51355. |
What is the resistance of the air gap . |
| Answer» Air gap\xa0(networking) From Wikipedia, the free encyclopedia. An\xa0air gap,\xa0air\xa0wall or\xa0air\xa0gapping is a network security measure employed on one or more\xa0computers\xa0to ensure that a secure\xa0computer\xa0network is physically isolated from unsecured networks, such as the public Internet or an unsecured local area network.\xa0An\xa0air gap\xa0is completely insulator i.e. very high electrical\xa0resistance\xa0≈ 109\xa0Ωm, since it consists of molecules of oxygen and nitrogen. There are no free electrons. However, application of very high potential ionizes\xa0air\xa0and it becomes conducting, the potential gradient required is 3x106\xa0V/m. | |
| 51356. |
explain all 4 types of structure of heart in different vertebrates |
| Answer» Both birds and\xa0mammals\xa0have 4 chambered hearts. Both the atrial and ventricular regions of the heart are divided. This allows complete separtation of the pulmonary circuit from the systemic circuit.Amphibians\xa0have a three-chambered heart - two atria and one ventricle.The heart is roughly triangular in shape. It has four compartments called chambers inside it. The upper two chambers of the heart are called atria and the lower two chambers are called ventricles. The atria receive blood from the two main veins. The left atrium is connected to the left ventricle through a valve V1 and the right atrium is connected to the right ventricle through another valve V2. These valves prevent the backflow of blood into atria when the ventricles contract to pump blood out of the heart to the rest of the body because when the ventricles contract, the valves V1 and V2 close automatically so that the blood may not go back into the atria. The job of heart is to pump blood around our body. All the atria and ventricles of the heart contract and relax at appropriate times and make the heart behave like a pump. A sheath of tissue called pericardium protects the muscular heart. | |
| 51357. |
Function of larynx |
| Answer» The larynx, commonly called the voice box, is an organ in the neck of mammals involved in protecting the trachea and sound production. It manipulates pitch and volume. | |
| 51358. |
meaning of Phagocytosis |
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Answer» Engulfment of solid food by amoeba with help of psuedopodia Phagocytosis means the intake of solid particles a cell through plasma membrane . It is also called cell eating . Ex. Kupffer cells (liver), white blood cells etc |
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| 51359. |
Function of saliva |
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Answer» To make the food moist so as to pass from oesophagusDigestion of carbohydrates start here Saliva is a fluid which is secreted by the salivary glands. It helps in digestion of food by following Ways.\tSaliva contains a digestive enzyme called salivary amylase, which converts carbohydrates in to maltose sugars.\tIt cleans the mouth cavity and tends to destroy germs that cause teeth decay. It contains lysozomes which help in destroying the bacteria.\tIt moistens and lubricates food which again helps in swallowing.\tIt acts as solvent, dissolving some food particles to stimulate taste buds of the tongue. Saliva contains salivary amylase which helps in the breakdown of starch |
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| 51360. |
Why tears are salty |
| Answer» Tears are salty because they contain natural salts called electrolytes | |
| 51361. |
Number of electron in 1coulmb of charge |
| Answer» 1.6into 10raise to -19 | |
| 51362. |
Ferric oxide reacts with sulpheric acid to give ferric sulphate and water |
| Answer» Yeh to hota hi hai. Yeh koi quesiton to hua nahi. | |
| 51363. |
Identify x, y ,z in the following balanced equations |
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Answer» Not given Where is the equation |
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| 51364. |
What is holozoic nutritional |
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Answer» The organisms which live inside the body of a living organism and in take food from the the inside body and such type of process is known as holozoic nutritionIt is a part of heterotrophic NutritionFor example tape worm which live inside our stomach which intake food from our body Can consume different types of food Holozoic nutrition is a type of heterotrophic nutrition that is characterized by the internalization and internal processing of gaseous, liquids or solid food particles |
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| 51365. |
Difference between Autotrophic and heterotrophic nutrition |
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Answer» Bachpan se EVS mein padhte aa rahe ho fir bhi dhyan nhi hai kya? Auto prepare own foodHetro take food from otherd Autotropic organism make their own food and heterotropic organism depends upon the other oraganisms by directly or indirectly ex of autotropic nutrition green plants and ex of heterotrophic nutrition are human beings fungi etc Thanks for the answer and i am in my hometown Autotrophs are organisms that prepare their own food through the process of photosynthesis, whereas, heterotrophs are organisms that cannot prepare their own food and depend upon autotrophs for nutrition.”(hello anu where are u). |
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| 51366. |
Definition of speciation |
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Answer» The process by which a new species develops from the existing species is known as speciation.\xa0Speciation is caused due to three factors, which are:\xa0\tGeographical isolation: Caused due to reproductive isolation in\xa0separated groups of a population.\tGenetic drift: Caused due to\xa0changes in the gene flow imposed by the isolation mechanism.\xa0\tNatural selection: Caused due to genetic variation within a population of an organism.\xa0 Don\'t know the formation of new and distinct species in the course of evolution is called as speciation. |
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| 51367. |
Who is known as father of modern periodic table? |
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Answer» Shayad inlogon ne Chapter 5 nahi padha theek se. Thanks Lucifer Thanks Anushka Dmitri meñdeleev Demitri Mendeleev |
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| 51368. |
Write the detailed account on Dihybird cross |
| Answer» \xa0Dihybrid Cross\xa0- A cross which involves plants with two pairs of contrasting characters\tConsider a cross of pea plants with round and yellow seeds and plants with wrinkled and green seeds. In this cross, the two pairs of characters involved are seed shape and seed colour.\tThe capital letter R is used to denote round-shaped seeds and capital Y to denote yellow-coloured seeds. The genotype of the parent plant is RRYY. The other parent has wrinkled seeds which are green in colour. The letter small r denotes wrinkled seeds and small y denotes green-coloured seeds. The genotype of the parent is rryy. The two parent plants are then crossed, RRYY × rryy.\tMendel observed that the F1\xa0plants were with round yellow seeds phenotypically. The genotype of these F1\xa0hybrids was RrYy.\tWhen F1\xa0plants are self-pollinated, the four types of male gametes and four types of female gametes produce in all 16 different mating combinations.\tThe F2 generation obtained by self-pollination of F1 plants exhibits 16 plants with different genotypes. Of a total of 16 plants, 9 plants are with round and yellow seeds RRYY, 3 are with wrinkled and yellow seeds rrYY, 3 are with round and green seeds RRyy and 1 is with wrinkled and green seed rryy. Thus, the phenotypic ratio of F2 plants is 9:3:3:1.\tGenotypically, there are 9 different types of plant combinations—RRYY, RrYy, Rryy, rryy, RRYy, rrYy, Rryy, Rryy and rrYY. The genotypic ratio is 1:4:1:1:1:2:2:2:2. | |
| 51369. |
Is puducherry and Pondicherry both are same |
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Answer» Yes Yes Ya both are same Yes |
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| 51370. |
Who are conservative and liberal? |
| Answer» \tLiberals:\xa0They believed in a system which accepted all religions and not concentrates on a single religion. They were against dynasty rulers as well. They asked for one vote per property but did not include women in the same.\tConservatives:\xa0They were not ready for changes and wanted to discard the idea of changes. At one point they agreed to the upcoming changes but they wanted that at the same time the past should be respected. | |
| 51371. |
What is mean by amphotoric substances? |
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Answer» Most wlcm..? Thanks It is a substance that has the ability to act either as an acid or base.☺️☺️ Thanks bro The substance which react with both acid as well as base। |
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| 51372. |
Is any difference between nascent oxygen and pure oxygen? |
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Answer» Ok Nascent oxygen have one atom and pure oxygen have two atom .ok Nascent oxygen contains only one atom of oxygen and formula is (O) .While pure oxygen contains two atoms of oxygen and formula is O2 |
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| 51373. |
Why do potato chips manufacturers fill the packet of chips with nitrogen gas? Why |
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Answer» To prevent rancidity in potato chips To prevent rancidity Nitrogen is an inert gas, which stops the contents of the packet from reacting/decomposing. If they filled the packet with air or oxygen then the food would break down over time and will get decomposed. And, potato chips will be smelled and will become unedible. To prevent rancidity Nitrogen is added in the packet to avoid the chips to get spoiled faster as nitrogen is a inert gas which doesn\'t react with the substances quickly. |
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| 51374. |
Anyone know about skunk |
| Answer» It is an American mammels.?? | |
| 51375. |
What is the function of Cranium? |
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Answer» The function of the cranium is:-a) It protects and holds the brain. If we didn\'t have strong cranium then we\'d get traumatic brain injuries.(b) Cranial bones are held together by unique joints called sutures. The sutures don\'t fuse until adulthood, which allows our brain to grow continuously during childhood and adolescence. To protect the internal organs of forebrain,midbrain and hindbrain from any damages. |
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| 51376. |
Why mylinsheath not continously present on axon of a neuron? |
| Answer» Myelin\xa0acts as an insulator by having high resistance and low capacitance within the internodal regions. This allows an electrical impulse to propagate rapidly down the axon, jumping from node to node, a process called saltatory conduction.\xa0Much like the insulation around the wires in electrical systems, glial cells form a membraneous\xa0sheath\xa0surrounding\xa0axons\xa0called\xa0myelin, thereby insulating the\xa0axon. This\xa0myelination, as it is called, can greatly increase the speed of signals transmitted between neurons (known as action potentials). | |
| 51377. |
What are the function of human cell |
| Answer» Cells\xa0are the basic building blocks of all living things. The\xa0human\xa0body is composed of trillions of\xa0cells. They provide structure for the body, take in nutrients from food, convert those nutrients into energy, and carry out specialized functions. Cells\xa0have many parts, each with a different function.\xa0They provide structure for the body, take in nutrients from food, convert those nutrients into energy, and carry out specialized\xa0functions.\xa0Cells\xa0also contain the body\'s hereditary material and can make copies of themselves.\xa0Cells\xa0have many parts, each with a different\xa0function. | |
| 51378. |
What stop blood from flowing backwards through the heart? |
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Answer» A flap like structure called \'Valves\' present in b/w right atrium and right ventricle, b/w right ventricle and pulmonary artery, b/w left atrium and left ventricle and b/w left ventricle and aorta this valves stop blood from flowing backwards through the heart. When the ventricle is full, the tricuspid valve shuts to prevent blood flowing backwards into the atrium. Blood\xa0flows from the right atrium into the right ventricle\xa0through\xa0the tricuspid valve. When the ventricle is full, the tricuspid valve shuts to\xa0prevent blood flowing backwards\xa0into the atrium.\xa0Blood\xa0leaves the\xa0heart through\xa0the pulmonic valve into the pulmonary artery and flows to the lungs.\xa0Blood\xa0enters the\xa0heart through\xa0two large veins, the inferior and superior vena cava, emptying oxygen-poor\xa0blood\xa0from the body into the right atrium of the\xa0heart. As the atrium contracts,\xa0blood flows\xa0from your right atrium into your right ventricle\xa0through\xa0the open tricuspid valve. A sets of valves exist between each atrium and ventricle that prevents the flowing of blood backwards through the heat.?? |
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| 51379. |
What is the function of brushes in a generator |
| Answer» The brushes is help for friction to produce delectry in generator | |
| 51380. |
WHAT IS DEFRACTION |
| Answer» Diffraction is normally taken to refer to various phenomena which occur when a wave encounters an obstacle. It is described as the apparent bending of waves around small obstacles and the spreading out of waves past small openings | |
| 51381. |
?Who is world popular leader?? |
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Answer» Thanks to both...?? Shree Narendra damodar das modi It\'s of course Prime minister Shree Narendra ji Modi |
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| 51382. |
Name five things which can prevent rancidity |
| Answer» Oxidation of food resulting in bad taste and bad smell is known as rancidity.Ways to prevent rancidity are :1)by adding antioxidants .2)by refrigerating the food items.3)by flushing the food with nitrogen gas.4)by using air tight containers.5)by vacuum packing. | |
| 51383. |
Uses of bifocal lenses |
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Answer» Sometimes a person may suffer from both near sightedness and far-sightedness. Such people are advised to use bifocal lenses. Bifocal lenses consists of concave on the upper portion and convex on the lower portion. Bifocals are commonly prescribed to people with presbyopia who also require a correction for myopia, hyperopia, and/or astigmatism. |
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| 51384. |
Difference between atoms and molecules |
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Answer» क्या Thanks ? The tiny particle of a chemical element, which may or may not exist independently is called an atom. Molecules refer to the set of the atoms held together by the bond, indicating the smallest unit of a compound |
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| 51385. |
Write any three features of photosynthetic leaf |
| Answer» \tPhotosynthesis is essential for the existence of all life on earth. It serves a crucial role in the food chain – the plants create their food using this process, thereby, forming the primary producers.\tPhotosynthesis is also responsible for the production of oxygen – which is needed by most organisms for their survival. | |
| 51386. |
Explain Atmospheric refraction |
| Answer» The refraction of light by the Earth’s atmosphere is known as atmospheric refraction. The earth’s atmosphere is not evenly distributed and is optically denser at the bottom while is rarer at the top. The velocity of light changes from layer to layer. The molecules of different gases and dust particles have different optical densities. When an object transmits light rays in the atmosphere, these light rays pass through the atmosphere having different air layers of different densities and get refracted by the atmosphere. | |
| 51387. |
Board ke liye science ka koun sa book best hai..ncert enough or side book se padhe |
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Answer» For theory you should prefer ncert and for question you can prefer ncert exampler. Sonia mahto u r right NCERT and U like ya exam idea ya phir Arihant in sab mai extra question h U can prefer lakhmir singh...and practice questions from sample papers and previous year papers |
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| 51388. |
Different between tropic and nastic movement |
| Answer» \tTropic movementsNastic movementsThese are directional movements of plants in response to stimulus.These are non-directional movements of plants in response to stimulus.Example: The upward growth of a plant stem in response to sunlight.Example: The folding up of leaves in response to touch.\t | |
| 51389. |
Two vital function of kidney? |
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Answer» Filtration and reabsorption of essential minerals and water 1. Regulating and filtering minerals from 2. Maintaining overall fluid balance |
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| 51390. |
Important reactions in carbon and its compounds |
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| 51391. |
2.1.4 of class 10 |
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| 51392. |
What will happen if we intake iodine in our balance diet is low? |
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Answer» We may suffer from goiter If the intake of iodine is low the following things may happen:(a) Since, iodine is requires for the release of thyroxin from thyroid gland, less iodine will result in less thyroxine, thus affecting carbohydrate and fat metabolism.(b) A person might suffer from goitre because of lack of thyroxine. |
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| 51393. |
Different between exothermic and endothermic reactions |
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Answer» Exothermic reaction:- heat is realisedEndothermic reaction:- heat is provided by us \tEndothermic ReactionExothermic ReactionA reaction that the system absorbs energy from its surrounding in the form of heat.A reaction that releases energy from the system in the form of heat.The energy is absorbed from the surround into the reactionThe energy is released from the system to its environment.Energy in the form of heatEnergy is released as heat, electricity, light or sound.Melting ice, evaporation, cooking, gas molecules, photosynthesis are few examplesRusting iron, settling, chemical bonds, explosions, nuclear fission are a few examples.\t _In exothermic reactions energy\'s is realesed due to reaction ._In endothermic reaction energy\'s is required for reaction. |
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| 51394. |
How many plant harmones are there and explain them |
| Answer» there are five gerneral classes of harmons .1. auxins 2.cytokinins 3.gibberellins 4.ethylene 5. abscisic acid | |
| 51395. |
What do you mean by Aldehyde |
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Answer» an organic compound containing the group —CHO, formed by the oxidation of alcohols.(Hi babes) An organic compound contain the group CHO formed by the oxidation of alchols . typical aldehydes include methanal (formal dehyde) and ethanal (acetaldehyde ) |
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| 51396. |
What is the function of salivary glads and what are these glad located in body |
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Answer» salivary glands -it produced saliva .which kept mouth and other parts of the digestive system moist . it also help break down carbohydrates and lubricates the passage of food down from the oro-pharynx to the esophagus to the stomach In all mammals, the salivary glands functions as an exocrine gland, which produces saliva through a system of ducts. Among all other mammals, humans have hundreds of salivary glands and are present within the mouth. The basic secretion units of salivary glands are called acini and are composed of clusters of cells.\xa0Salivary Glands are composed of two types of secretory cells:\xa0\tSerous cells– These cells are present on the surface of epithelium, submucosal glands and secretes an enzyme solution.\tMucous cells– These cells are present inside the stomach, in the necks of the gastric pits and produces mucus. |
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| 51397. |
How does nervous tissue cause action |
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Answer» It stimulates muscle contraction creats an awreness of the environment ,and plays a major role in emotio ,memory ,and recasoning to do all these things ,cell in nervous tissue need to be able to communicate with each other by way of electrical nerve impulse Nervous tissue is the main component of the nervous system, which regulates and controls body functions. It is specialised to react to stimuli and to conduct impulses to various organs in the body which bring about a response to the stimulus. |
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| 51398. |
Define following terms (matel) |
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Answer» Properties that decide the metal.1-Shiny appearance.2- Lustrous3-Melleable4- Ductile5-Generally solid, liquid or gas at room temperature.6-Generally have high density.7-They are sonorous i.e. abipity to produce sound when struck by hard object.8-They are generally grey in colours.Please note that the above explained property is physical property .When you read further you would also read chemical property. type of solid substance that is usually hard and shiny and that heat and electricity can travel throughविद्युत तथा ताप का अवशोषक कठोर चमकीला ठोस पदार्थ, धातु |
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| 51399. |
Can i get PDF of laskhay book series |
| Answer» | |
| 51400. |
Which nerve is 12 in pairs in our body??? |
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Answer» Cranial nerves Each cranial nerve is paired and is present on both sides. There are conventionally\xa0twelve pairs\xa0of cranial nerves, which are described with Roman numerals I–XII. Some considered there to be thirteen pairs of cranial nerves, including cranial nerve zero. Thanks to both.....?? Cranial nerves Cranial nerves |
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