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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.
| 2251. |
Explain relative refractive index and also show its derivation |
| Answer» Bending of light at the boundary of two medium is called refraction.The light bending ability of that particular medium is called refractive index.Refractive index is defined as ratio of sine of angle of incidence to sine of angle of refraction.It is denoted by n or\xa0μ.Thus, refractive index is given by,Absolute refractive index:\xa0When the light is going from vacuum to another medium, then the value of refractive index is called the absolute refractive index.Relative refractive index:\xa0When the light goes from one medium ( other than vacuum or air) to another medium then that refractive index is called relative refractive index. | |
| 2252. |
Why does voltmeter not combine in series combination? |
| Answer» Voltmeter is used to measure potential difference.It is always connected in parallel across the points where the potential difference is to measured so one end of the voltmeter is connected to the point A of a resistance AB and the other end to the point B,and also it has a high resistance so that it takes a negligible current from the circuit.Voltmeters have high resistance, so in series, they would greatly decrease the current going to the circuit.Ammeters are very low R, so in parallel, the current would bypass the circuit, all go through the ammeter, and blow out the ammeter.\xa0 | |
| 2253. |
Why does voltmeter always combine in parallel combination? |
| Answer» Voltmeter is used to measure potential difference.It is always connected in parallel across the points where the potential difference is to measured so one end of the voltmeter is connected to the point A of a resistance AB and the other end to the point B,and also it has a high resistance so that it takes a negligible current from the circuit.Voltmeters have high resistance, so in series, they would greatly decrease the current going to the circuit.Ammeters are very low R, so in parallel, the current would bypass the circuit, all go through the ammeter, and blow out the ammeter.\xa0 | |
| 2254. |
Difference between electric generator and electric motor? |
| Answer» \tSl. No.Differentiating PropertyMotorGenerator1DefinitionAn electric motor is a machine that converts electrical energy to mechanical energy.An electric generator is a machine that converts mechanical energy to electrical energy.`2RuleElectric motor follows Fleming’s left-hand rule.Electric generator follows Fleming’s right-hand rule.3PrincipleMotors works on the principle that a current carrying conductor experiences a force when placed in a magnetic field.Generators work on the principle of electromagnetic induction.4Driving force for shaftThe shaft of an electric motor is driven by a magnetic force which is developed between the armature and field.The shaft of an electric generator is connected to the rotor which is driven by a mechanical force.5Current UsageIn a motor, current is supplied to the armature winding.In a generator, current is produced in the armature winding.\t | |
| 2255. |
What do u mean by spore formation? |
| Answer» Spore formation is a type of asexual reproduction found among most of the non-flowering plants and eukaryotic organisms like fungi and bacteria.Spore formation also called as sporulation involves reproduction of new plants by producing numerous microscopic spores.These spores are present inside the spore-producing asci which break open under favorable condition to release the spores.Sporogenesis is usually as a result of meiotic cell division.A typical spore of a rhizobium consists of a stalk called hyphae, spore-containing sac called sporangium, and the spores inside the sporangium.Motile spores are called as zoospores and nonmotile spores are called aplanospores. | |
| 2256. |
What is collagen ??? |
| Answer» Collagen is a type of protein fiber found abundantly throughout our body. It provides strength and cushioning to many different areas of the body, including the skin. | |
| 2257. |
What is ovule |
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Answer» Ovules are the female reproductive units of seed plants and comprise the female gametophyte the part of the ovary of seed plants that contains the female germ cell and after fertilization becomes the seed. Kaise ho |
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| 2258. |
Function of Cervix |
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Answer» Welcome Thanks and hello It is the lower most part of the uterus and is made up of strong muscles. The function of the cervix is to allow flow of menstrual blood from the uterus into the ******, and direct the sperms into the uterus during intercourse. Hi anu |
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| 2259. |
What is the process of rainbow formation |
| Answer» A rainbow is formed when light (generally sunlight) passes through water droplets hanging in the atmosphere. The light waves change direction as they pass through the water droplets, resulting in two processes: reflection and refraction | |
| 2260. |
What is mean by Homologous organs? |
| Answer» Homologous organs are defined as the organs of different animals that are having a similar structure but differ in their functions.Example of homologous organs are the forelimbs of frog, man, and the flippers of the whale. The structure of these animals are the same but the functions are different.The flippers are used for swimming, the forelimbs of frogs are used for jumping and propping, and the forelimbs of man are used for writing, eating, holding things, etc. Having a similar structure shows that all these animals have a common ancestor. | |
| 2261. |
Function of prism in refraction |
| Answer» When white light goes through a prism, the light bends due to the phenomenon called refraction. Refraction is the process of bending light as light goes from one medium (like air) to another medium (like water or glass). ... So, when white light passes through a prism, a rainbow emerges on the other side. | |
| 2262. |
What happen when nitric acid is added to egg shell |
| Answer» Egg shell\xa0is made of calcium carbonate. We know that when calcium carbonate reacts with\xa0nitric acid, it gives carbon dioxide, calcium nitrate and water. Same reaction\xa0happens\xa0when\xa0nitric acid\xa0is poured over\xa0egg shell.\xa0Upon mixing of concentrated\xa0hydrochloric acid\xa0and concentrated\xa0nitric acid, chemical reactions occur. These reactions result in the volatile products nitrosyl chloride and chlorine gas:HNO3\xa0(aq)\xa0+ 3\xa0HCl\xa0(aq)\xa0→ NOCl\xa0(g)\xa0+ Cl2\xa0(g)\xa0+ 2 H2O. as evidenced by the fuming nature and characteristic yellow color of aqua regia. | |
| 2263. |
The processes involved in nutrition in human being |
| Answer» Nutrition in Human Beings (Complex Multicellular Animal):\t\tThe various organs of the human digestive system in sequence are: Mouth, Oesophagus (Food pipe), Stomach, Small intestine and Large intestine.\t\tThe glands which are associated with the human digestive system are: Salivary glands, Liver and Pancreas.The various steps of nutrition in human beings are as follows: 1. Ingestion:\t\tIn human beings, food is ingested through the mouth. The food is put into the mouth with the help of hands.\t2. Digestion:\t\tThe digestion of food begins in the mouth itself.\t\t\tThe teeth cut the food into small pieces, chew and grind it. (Physical digestion)\t\t\tThe salivary glands in our mouth produce saliva (watery liquid) which contains an enzyme salivary amylase which digests the starch (carbohydrate) present in the food into sugar. (Chemical digestion)\t\t\tOur tongue helps in mixing this saliva with food.\t\t\tThe digestion of food remains incomplete in mouth.\t3. Oesophagus:\t\tThe slightly digested food in the mouth is swallowed by the tongue and goes down the food pipe called oesophagus.\t\t\tWhen the slightly digested food enters the food pipe, the walls of food pipe start contraction and expansion movements called as peristaltic movement.\t\t\tThis peristaltic movement of food pipe pushes the slightly digested into the stomach.\t4. Stomach:\t\tThe stomach is a J-shaped organ present on the left side of the abdomen.\t\t\tThe stomach walls contain s three tubular glands in it walls which secrete gastric juice.\t\t\tThe gastric juice contains three substances: Hydrochloric acid, the enzyme pepsin and mucus.\t\t\tThe hydrochloric creates an acidic medium which facilitates the action of the enzyme pepsin i.e. digestion of protein.\t\t\tThe mucus helps to protect the stomach wall from its own secretions of hydrochloric acid.\t\t\tThe partially digested food then goes from the stomach into the small intestine.\t5. Small intestine:\t\tFrom the stomach, the partially digested food enters the small intestine.The small intestine is the largest part (about 6.5m) of the alimentary canal.The small intestine is very narrow and arranged in the form of a coil in our belly.The small intestine in human beings is the site of complete digestion of food (like carbohydrates, proteins and fats)The small intestine receives the secretion of two glands: Liver and Pancreas.Liver secretes bile (greenish yellow liquid made in the liver and stored in gall bladder).Bile performs two functions:Makes the acidic food coming from the stomach alkaline so that pancreatic enzymes can act on it.Bile salts break the fats present in the food into small globules making it easy for the enzymes to act and digest them.The pancreas secretes pancreatic juice which contains enzymes like pancreatic amylase for breaking down starch, trypsin for digesting proteins and lipase for breaking down emulsified fats.The walls of the small intestine contain glands which secretes intestinal juice. The enzymes present in it finally convert the proteins into amino acids, complex carbohydrates into glucose and fats into fatty acids and glycerol.In this way the process of digestion converts the large and insoluble food molecules into small water soluble molecules.\t\t6. Absorption: \t\tThe small intestine is the main region for the absorption of digested food.\t\t\tThe inner surface of the small intestine has numerous finger-like projections called villi which increase the surface area for rapid absorption of digested food.\t\t\tThe digested food which is absorbed through the walls of the small intestine goes into our blood.\t7. Assimilation: The blood carries digested and dissolved food to all the parts of the body where it becomes assimilated as part of the cells and is utilised for obtaining energy, building up new tissues and the repair of old tissues.8. Egestion: The unabsorbed food is sent into the large intestine where more villi absorb water from this material. | |
| 2264. |
Cause of refraction |
| Answer» The cause of refraction of light is that light travels with different speeds in different media. This Change in the speed of light when it moves from one medium to another causes it to bend. | |
| 2265. |
Define ions |
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Answer» Charge atoms are called ions an atom or a molecule that has gained or lost one or more of its parts (electrons) and so has a positive or negative electric charge |
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| 2266. |
What is chemichal equation |
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Answer» A chemical reaction is a change in which one or more substances or reactants reacts to form new products with entirely differnet chemical properties A chemical reaction of the magnificent The symbolic representation of chemical formula is called chemical equations A chemical reaction is been represented by a chemical equations . It include us of symbol of the reactant and the product Ex: Mg+O^2=====>MgO representing any chemical reaction by their chemical formula |
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| 2267. |
What is alakli..? |
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Answer» Alkali are bases which can be dissolved in water Bases that are fully dissolved in water are called alkali. Example NaOH Alkalis are bases which are completely soluble in water.Sodium oxide and potassium oxide are alkalis which dissolve in water to form soluble bases sodium hydroxide and potassium hydroxide respectively. |
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| 2268. |
Is ethane water soluble or not❔❔❔❔ |
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Answer» Khud kr dekh na Thanks both of u......???? No No |
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| 2269. |
What is concertrated acid |
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Answer» A concentrated acid is a purest form of acid and has higher concentration . It also contains very less amount of water in it. Pure acid is known as concentrated acid A concentrated acid is an acid which is either in its purest form or has its higher concentration.In other way , it contains very less or no amount of water in it. |
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| 2270. |
What is snapse |
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Answer» In the nervous system, a synapse is a structure that permits a neuron (or nerve cell) to pass an electrical or chemical signal to another cell (neural or otherwise). The synapse contains a small gap separating neurons. It is a junction between two neurons. |
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| 2271. |
Does our hair act as a root |
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Answer» Yes Ya ofcourse....☺️☺️☺️☺️☺️ Yes |
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| 2272. |
How antacid works |
| Answer» When the amount of hcl is increased in our stomach and start to heartburn or oyher problems,we use antacid to neutralize the effect of hcl in our stomach. | |
| 2273. |
Steps of excretary system in human being? |
| Answer» Filtration, Reabsorption, Secretion: The Three Steps of Urine Formation. The kidneys filter unwanted substances from the blood and produce urine to excrete them | |
| 2274. |
which harmone help in lowering the level of blood glucose in human being |
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Answer» Insulin secreted by pancreas Blood sugar levels\xa0are a measure of how effectively the\xa0body\xa0uses\xa0glucose. When\xa0blood sugar levels\xa0are too low, the pancreas releases glucagon. Glucagon instructs the liver to release stored\xa0glucose, which causes\xa0blood\xa0sugar to rise. Islet cells in the pancreas are responsible for releasing both insulin and glucagon.\xa0Insulin\xa0helps your body turn\xa0blood sugar\xa0(glucose) into energy. It also helps your body store it in your muscles, fat cells, and liver to use later, when your body needs it. After you eat, your\xa0blood sugar\xa0(glucose) rises. This rise in\xa0glucose\xa0triggers your pancreas to release\xa0insulin\xa0into the bloodstream. |
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| 2275. |
What is power house of cell? |
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Answer» Mitochondria In bio. There will be mitochondria Mitochondria Mitochondria Mitochondria |
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| 2276. |
Balance the eqation HNO3+Ca(OH)2=Ca(NO3)2+H20 |
| Answer» 2HNO3+Ca(OH)2=Ca(NO3)2+2H2O | |
| 2277. |
What do u mean by atmospheric refraction? |
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Answer» When the light rays pass through the atmosphere having layers of different densities and refractive indices, then refraction of light takes place. This refraction of light by the earth’s atmosphere is called “atmospheric refraction”. When a beam of light change it\'s direction when it enter in a medium |
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| 2278. |
Give the answer for activity 2.14 table in class 10 second lesson. |
| Answer» | |
| 2279. |
What is voltage and resistance |
| Answer» Voltage is the difference in charge between two points. Resistance is a material\'s tendency to resist the flow of charge (current). | |
| 2280. |
What type of chemical reaction is illustrated by the above equation. |
| Answer» Where is the equation? | |
| 2281. |
Why homes in hilly areas are colder than homes in plain areas. |
| Answer» The temperature in the hilly area is low because the temperature decease with the height, so it is colder than the plain areas | |
| 2282. |
What is Snell\'s law . Explain it |
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Answer» Snell\'s law (also known as Snell–Descartes law and the law of refraction) is a formula used to describe the relationship between the angles of incidence and refraction, when referring to light or other waves passing through a boundary between two different isotropic media, such as water, glass, or air. Snell\'s law is a law stating that the ratio of the sines of the angles of incidence and refraction of a wave are constant when it passes between two given media.Hope it will help you. |
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| 2283. |
State coulomb\'s law . Also explane the law of which is also called inverse square law. |
| Answer» Coulomb\'s law states that the electrostatic force between between two point charges is directly proportional to the product of charge and inversely prportional to tthe square of distance between them.\xa0 | |
| 2284. |
Which of the |
| Answer» What ?????? | |
| 2285. |
What is the function of left ventricle of heart? |
| Answer» It is thickest of the heart\'s chamber and responsible for pumping oxygenated blood throughout the body | |
| 2286. |
Mode of nutrition in Fungi is?? |
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Answer» Saprophytic Saprotrophic mode of nutrition . Saprotrophic Heterotrophic (Saprotrophic): They feed on dead and decaying matter. |
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| 2287. |
Why do we store Silver chloride in dark bottles? |
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Answer» Silver chloride undergoes photo decomposition when exposed to sunlight. It breaks down into silver and chlorine and the colour of the substance turns grey. That is why we keep them in dark bottles. Silver chloride is stored in dark coloured bottles because it reacts with sunlight and decomposes to form silver and chlorine gas. So to prevent this it is stored in dark coloured bottles. the type of reaction is photolytic decomposition reaction. |
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| 2288. |
Bame the site of photosynthesis |
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Answer» Chloroplast Chlorophyll The site for photosynthesis is the chlorophyll. |
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| 2289. |
State the criteria which tells us that an organism is dead or living |
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Answer» Movement and growth The characteristics are :1. Can move by themselves2. Need food , water and air 3. Can grow4. Can respond to changes around them and are sensitive5. They can respire6. They excrete 7. Can reproduce . They cann have young ones State the criteria which tells us that an organism is dead or living |
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| 2290. |
Terminal phosphate linkage means |
| Answer» ATP\xa0is made\xa0unstable\xa0by the three adjacent negative charges in its\xa0phosphate\xa0tail, which "want" very badly to get further away from each other. The\xa0bonds\xa0between the\xa0phosphate\xa0groups are called phosphoanhydride\xa0bonds, and you may hear them referred to as “high-energy”\xa0bonds.\xa0ATP is formed of adenine, ribose and a row of three\xa0phosphate\xa0radicals attached to ribose. The last two\xa0phosphate\xa0radicals are attached by bonds of high transfer potential. This bond is also known as\xa0terminal phosphate linkage. This bond can be very easily synthesised and broken up.\xa0ATP is the higher energy form (the recharged battery) while ADP is the lower energy form (the used battery). When the\xa0terminal\xa0(third)\xa0phosphate\xa0is cut loose, ATP becomes ADP (Adenosine diphosphate; di= two), and the stored energy is released for some biological process to utilize. | |
| 2291. |
Prevention of corrosion resistance |
| Answer» Corrosion can be prevented by removing one of these conditions. Coating a metal surface with paint or enamel provides a barrier between the metal and the moisture in the environment. The process of coating a metal surface with another metal that is more likely to be oxidized is referred to as sacrificial coating. | |
| 2292. |
What is accomodation of power |
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Answer» The ability of eye lens to adjust its focal lengeth Power of accommodation is the ability of the eye lens to focus near and far objects clearly on the retina by adjusting its focal length. |
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| 2293. |
Balance the following equations (1)Na+O2-) na2o |
| Answer» 4Na+o2-2na2o | |
| 2294. |
What is the role of bile juice |
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Answer» Bile act on large and fact molecule and break down small molecules Bile juice is digestive juice made in liver and stored in gall bladder .It helps in fat digestion and absorbtion. Bile juice also helps to remove bilirubin when the body breaks down its own blood cells . It also removes cholestrol and send through out the waste material |
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| 2295. |
What are the characters of ideal respiratory system? |
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Answer» The removel of nitrogeneus waste material ✨Thin walls ✨A huge combined surface area ✨ A moist inner surface ☺️☺️☺️ |
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| 2296. |
Name the first member of alkyne homologous series??❓❓❓❓❓ |
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Answer» Thank u......☺️☺️☺️ The first member of alkyne homologous series is ethyne (C2H2). Thanks?? Ethyne |
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| 2297. |
What are ?asteroids |
| Answer» Asteriods are rocky worlds revolving around the sun that are too small to be called planets.☺️☺️ | |
| 2298. |
Merits of Mendeleev periodic table? |
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Answer» 1. There was a regular gradation in physical and chemical properties of elements.2. The group number of an element indicates highest oxidation state that it can attain.3. There were many vacant spaces in Mendeleev\'s periodic table for the elements to be discovered. He named them Eka-Boron, Eka-Aluminium and Eka-silicone He also predicted the properties of these undiscovered elements including atomic masses. These elements were discovered as Sc ,Ga and Ge with\xa0same features as he predicted.4. Mendeleev’s arrangement helped to correct atomic masses of a number of elements. 2. When noble gasses was discovered hel could add it to periodic table without any major change.☺️☺️☺️ 1. He left blank places which help scientists to discover new element.?? Thanks and welcome back Some gaps were left for the elements yet to be discovered. Thus, if a certain new element is discovered, it can be placed in a new group without disturbing any existing group. |
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| 2299. |
Which mineral acids are stronger acids than carboxylic acids❓?? |
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Answer» H2SO4 ?? Thanks to both...?? Mineral acids are stronger acids than carboxylic acids because mineral acids are completely ionised where as carboxylic acids are partially ionised H2So4,HNO3 |
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| 2300. |
Substance used for the oxidation of ethanol❓?? |
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Answer» the substance used for oxidation of ethanol is alkaline pottasium permenangnent (KMnO4) or acidic pottasium dichromonate(K2Cro7) Sodium dichromate is used for oxidation of ethanol. Thank you.....☺️☺️☺️ Hi By acidified sodium dichromate. |
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