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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.
| 58251. |
How to say that organsims are alive? |
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Answer» N.r convent school Bhai aap bhi padye hoo kya waise kon se school main hii |
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| 58252. |
What is thalamus? |
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Answer» The thalamus is a small structure within the brain located just above the brain stem between the cerebral cortex and the midbrain and has extensive nerve connections to both. The main function of the thalamus is to relay motor and sensory signals to the cerebral cortex. In brain I think it is a gland |
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| 58253. |
.explain the Law of independent assortment |
| Answer» Law of independent assortment state that - If two organisms are crossed having two contrasting characters then the inheritance of one character will not the inheritance of other character.for ex-if two plants are crossed one with tall and purple flower other with drawf and red flower then it is not compulsory that if the progeny is tall it will have purple flower it can have any color flower. Hence law of independent assortment can be proved by dihybrid cross | |
| 58254. |
What was reproduction? |
| Answer» It is the ability of any organism by which it produces organisms of its own kind . It stabilizes the continuty of species | |
| 58255. |
What is dc motor ? |
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Answer» Electric motor: A motor is a device which converts electrical energy into mechanical energy.Principle of motor : A motor works on the principle that when a rectangular coil is placed in a magnetic field and current is passed through it. A force acts on the coil which rotates it continuously. Dc motor is the one type of motor that use the dc current to convert the electric energy into mechanical energy |
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| 58256. |
Define power and diopter |
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Answer» Power is degree of divergence and convergence of a lens its SI unit is diopter it is denoted by letter D. Power\xa0is defined as the rate of doing work. Power is measured in watt which is equal to joule per second.1 dioptre is SI unit of the power of a lens whose focal length is 1 metre. It is denoted by the letter D. Thus 1D = 1 m-1. Simply, when focal length ‘ f ‘ is expressed in metres, then, power is expressed in dioptres. The power of a convex lens is positive and that of a concave lens is negative. |
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| 58257. |
Why parallel arrangements used in domestic circuit |
| Answer» Bcoz current divided into appliances according to their need and no power voltage is wasted | |
| 58258. |
Diffrent type of sexual and asexual.? |
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Answer» Methods of Asexual ReproductionIt takes place by 6 methods.\tFission\tBudding\tSpore formation\tRegeneration\tFragmentation\tVegetative Propagation In asexual reproduction there are single parent is involved.,,,.... While in sexual reproduction there are opposite *** are involved . |
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| 58259. |
Tell me that electric resistance |
| Answer» Opposite force | |
| 58260. |
The length of the day is same as observed on the earth. Justify the statement |
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| 58261. |
Why is role of seminal vesicle? |
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Answer» Seminal vesicles: The seminal vesicles secretion makes the transport of the sperm easier and the fluid also provides nutrition. The secretion of the seminal vesicles constitutes the bulk of the seminal fluid (semen). It is a thick fluid that contains the sugar fructose, proteins, citric acid, inorganic phosphorus, potassium, and prostaglandins. |
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| 58262. |
What is the full form of hcl and ddt ? |
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Answer» Hydro chloric acid and dichloro diphenyl trichloroethane Hydrochloric acid and dichloro diphenyl trichloroethane respectively Hydro chloric acid and dichloro diphenyl trichloroethane |
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| 58263. |
Why ddt are collected? |
| Answer» Due to second law of aerodynamic | |
| 58264. |
What metallurgy? |
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Answer» The scientific principles and the physical and chemical processes that are applied to obtain pure metals from their ores are known as metallurgy.In other words, the process used for the extraction of metals in their pure form from their ores is referred to as metallurgy. Metallurgy is the study of extraction of the metals from their respective ores. Extracting metals from their respective ores is known as metallurgy |
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| 58265. |
What is embryo? |
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Answer» In, general embryo is early stage of development which further develops to form zygote. An embryo is an early stage of development for an unborn baby. During this period of growth, a tiny fertilized egg divides and develops to a point where it starts to resemble a newborn. No foetus is a full developed baby. And when it comes out then it is called as a baby. Next stage of foetus s known as embryo |
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| 58266. |
What is principle of revetsibility of light |
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Answer» \xa0The principle that if a beam of light is reflected back on itself, it will traverse the same path or paths as it did before reversal.The principle of reversibility states that light will follow exactly the same path if its direction of travel is reversed.Hence:Using Snell\'s Law, Amount of Light travelling from a medium to second medium is the reciprocal of amount of light travelling from second medium to first medium. |
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| 58267. |
Give an example of a salt which is also used for making fumes |
| Answer» The chemical name of white salt is Lead nitrate Pb(NO3)2.The salt on heating produces brown fumes. This implies that the salt contains nitrate ion. This salt can be any nitrate but if the residue left after heating is yellow in colour implies that the salt is lead nitrate.The equation involved can be shown as:2Pb(NO3)2 → 2PbO + 4NO2 + O2Lead nitrate Lead oxide Nitrogen dioxideColourless Yellow Brown fumes | |
| 58268. |
A ball vertically thrown upward.What is the momentum of ball? |
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| 58269. |
What are autographs |
| Answer» Autographs ya autotrophs | |
| 58270. |
What we have to do to increase our species?? |
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| 58271. |
Wrire 4 andvantage and disadvantages of dams. Only 4 niether more nor less |
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Answer» Rajnesh soory but in ur advantages u only write on electricity. U think more advantages except electricity DISADVANATGES:\t1. Dams are extremely expensive to build and must be built to a very high standard. 2. The high cost of dam construction means that they must operate for many decades to become profitable.\t3. The flooding of large areas of land means that the natural environment is destroyed.4. People living in villages and towns that are in the valley to be flooded, must move out. This means that they lose their farms and businesses. In some countries, people are forcibly removed so that hydro-power schemes can go ahead. ADVANTAGES: 1. Once a dam is constructed, electricity can be produced at a constant rate.2. If electricity is not needed, the sluice gates can be shut, stopping electricity generation. The water can be saved for use another time when electricity demand is high. 3. Dams are designed to last many decades and so can contribute to the generation of electricity for many years / decades. 4. The lake\'s water can be used for irrigation purposes. #Advantages of Dams →Flood control →Hydroelectricity →Navigation →Recreation →water supply →Irrigation #Disadvantages of dams →waterborne diseases→High cost of construction →Poor habitat for aquatic life →Restricts natural flow →excessive sedimenatation →Submerging of existing vegetation |
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| 58272. |
What is the baking powder?and work how to make back powder |
| Answer» Baking powder is a mixture of baking soda (NaHC03) and an edible acid like tartaric acid.Baking powder on heating produces carbon dioxide gas which causes bread or cake to rise making it soft and spongy. | |
| 58273. |
Vande matram |
| Answer» Vande matram simmi | |
| 58274. |
Why is omnivorous ?give five example |
| Answer» Animal which eat both plants and animals are known as omnivorous. Ex- human being, crows, pig ,rats, racoons | |
| 58275. |
What is soloniod |
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Answer» Solenoid is a coil of insulated copper wire wrapped closely on the form of hollow cylinder A solenoid is a long helically wound coil of insulated copper wire....... |
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| 58276. |
Plese solve activities no.1.7 of class 10 |
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| 58277. |
What we use barriers method?and how barriers method famous to india qith example. |
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| 58278. |
What is biomass energy |
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Answer» Biomass energy : it is a type of energy in which anaerobic breakdown plants and wastes take place by the action of anaerobic bacteria to produce gober gas / biogas gas and some nutrients. Book me padh le |
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| 58279. |
What is Fragmentation? Explain |
| Answer» It is a method of assexual reproduction in which a parent cell divide into fragments and give rise to new daughter cell . For eg. Spirogyra | |
| 58280. |
Name a crying gas ??? |
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Answer» Tear gas is also called as cs gasChemical formula is C10H5CIN2IUPAC name is 2-chlorobenzalmalononitrile.Tear gas creates burning sensation in eyes.we cannot keep our eye open.It also cause irritation in nose,mouth and Thorat which leads to coughing , difficulty in breathing etc.. The compound 2-chlorobenzalmalononitrile (also called o-chlorobenzylidene malononitrile; chemical formula: C10H5ClN2), a cyanocarbon, is the defining component of a tear gas commonly referred to as CS gas, which is used as a riot control agent. |
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| 58281. |
Formula of lead acetate |
| Answer» Pb(C2H3O2)2 | |
| 58282. |
Explain the process of urine formation? |
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Answer» It involves the following processes... 1. Ultrafiltration 2. Reabsorption 3. Concentration of urine Urine formation involves three processes : glomerular filtration, tubular reabsorption and tubular secretion.(a) Glomerular Filtration : (i) Walls of glomerular capillaries and Bowman’s capsule are very thin and ‘ semipermeable. (ii) They allow water and small molecules in the blood to pass across the capillary wall through tiny spaces between the cells of the Bowman’s capsule, (iii) The blood pressure is high in the glomerular capillaries because the efferent arteriole, which drains them, is narrower than the , afferent arteriole, which supplies them, (iv) This pressure is about 75 mm. Hg. in man. The net force moving the fluid from the glomerular capillariescalled the filtration pressure, 25 mm. Hg. Filtration of fluid under pressure is termed ultrafiltration.(v) The filtered out fluid is known as glomerular filtrate or capsular filtrate or ultra- filtrate, (vi) The ultrafiltrate contains sodium, potassium, magnesium and calcium ions, glucose, amino acids and some other useful materials such as vitamins along with urea, uric acid; ammonia and some other wastes such as creatinine and ketone bodies and a large amount of water.(b) TubularReabsorption:FromtheBowman’scapsule, the glomerular filtrate passes into the tubule and flows through it to the collecting duct. During this course, its composition, osmotic pressure and pH change due to selective reabsorption of materials from it.Proximal Convoluted Tubule : (i) The cells lining , the proximal convoluted tubule, (ii) Mitochondria power the active transport of nutrient molecules back into the blood, (iii) Microvilli increase the surface for reabsorption, (iv) The cells reabsorption : glucose, almost all amino acids, most of the inorganic ions (Na+, K+, Cl-), much of the water as well as some urea, uric acid and creatinine from the filtrate and secrete them back into the blood capillaries around the tubule, (v) Reabsorption takes place in two ways : back diffusion and active transport.(B) Henle’s Loop : (i) In the ascending limb of Henle’s loop the remaining 25% of K+ and some Cl- and Na+ ions are actively reabsorbed, (ii) The ascending limb is impermeable to water. Therefore, no water is reabsorbed, (iii) The Na+ leaving the ascending limb passively diffuses into the descending limb because now its concentration is higher in the interstitial fluid than in the descending limb.(C) Distal Convoluted Tubule, Collecting Tubule and Collecting Duct : These regions of the nephron actively reabsorb some Na+ from the filtrate, and in exchange excrete some K+ in the urine. Some Cl- is reabsorbed by diffusion from the DCT.(D) Tubular Secretion: (i) Cells of the distal convoluted tubule and collecting duct of the nephron excrete additional waste from the blood-stream into the filtrate by active transport, (ii) This process of tubular secretion adds urea, creatinine, hippuric acid, potassium and hydrogen ions (H+), ammonia (NHj) and a little uric acid, (iii) Removal of hydrogen ions and ammonia from the blood helps to maintain the pH of the blood, (iv) When the blood pressure and consequently the filtration pressure drop below a certain level, filtration stops and urine is formed by tubular secretion only . |
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| 58283. |
Are bacterias like putrefying eat inorgani substance from the help of their secretion |
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Answer» yes ..they do Yes |
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| 58284. |
What is collateral? |
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Answer» Property or something valuable that you agree to give to somebody if you cannot pay back money that you have borrowed something pledged as security for repayment of a lone, to be forfeited in the event of a default |
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| 58285. |
What is difference between regeneration and fragmentation? |
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Answer» \tFragmentationRegenerationOrganisms that are fragmented result in each fragment growing into an individual organismRegeneration occurs when an organism wants to regrow a lost limb or any other part of the body.A new individual emerges from each fragmentNo new organisms are formedOnly few very organisms can fragment and form a new individualAll organisms exhibit some the ability to regenerate to some degreeFragmentation is observed in organism such as flatworms and spongesExamples of regeneration include regrowing a lost limb, such as the tail of a lizard\t Regeneration can be occured at any stage of life but in fragmentation the organisms split only at their maturity. |
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| 58286. |
What is palisade |
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Answer» Palisade cells are plant cells located in leaves, right below the epidermis and cuticle. They are vertically elongated, a different shape from the spongy mesophyll cells beneath them in the leaf. Their chloroplasts absorb a major portion of the light energy used by the leaf. a line of high cliffs Plant cells located in leaves and their function is to absorb most of sunlght energy for doing photosynthesis in leaves |
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| 58287. |
What is contraceptives? What are the mechanical and surgical contraceptives? |
| Answer» The methods to prevent unwanted pregnancy is called contraception. Mechanical contraceptives are condmns and surgical are tubectomy(in females) or vasectomy (in males). | |
| 58288. |
How do grasses show hydronasty? plz explain asap. |
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| 58289. |
How do a tulip or any other plant show thermonasty ? plz explain |
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Answer» hydronasty ka b btado plz Is it okay Sry its thermonasty Thermonasty is the movement in plants due to change in temperature in plants , some plants close or contract their Petals and show thigmonasty |
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| 58290. |
Why money act as a medium of exchange |
| Answer» A medium of exchange is an intermediary instrument used to facilitate the sale,purchase or trade of goods between parties for an instrument to function as a medium of exchange it must represents standard of value accepted by all parties (money is used to buy and sell times) | |
| 58291. |
What is the principal function of the eye -lens? |
| Answer» The principal function of the eye lens is to enable us to see the objects located at different intervals clearly..... | |
| 58292. |
Difference b/w zygote and gametes ..(5 Mark) |
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Answer» *haploid Gamete is hiploid cell whereas zygote is diploid... Zygote is found in fallopian tube whereas gamete r found in gonads... Gametes carry characteristics of only one patent whereas zygote carries characters of both parents... Gamete is a germ cell that takes part in fertilisation whereas zygote is the product of fertilisation.... Gamete is formed by meiosis of germ cells whereas zygote is formed by thr process called fusion.. |
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| 58293. |
What is the difference between overloading and short circuit |
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Answer» Short Circuit\xa0occurs when neutral wire and live wire touch accidentally providing a very low resistance path for current. ...\xa0Overloading\xa0of the\xa0circuit\xa0occurs when large number of appliances are connected in a single socket. This causes a large amount of current to flow and the fuse may blow off....hope it will help u ?? Short-Circuit\tOccurs when live comes in contact with neutral wire.\tHigh amount of current flows through the circuit.\tThe potential difference at the point of short-circuiting will drop to zero.Overload\tOccurs when large number of appliances are turned on simultaneously.\tLow amount of current flows through the circuit as compared to short-circuit.\tThe potential difference does not drop to zero but it does reduce. |
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| 58294. |
What are the functions of placenta? |
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Answer» Placenta - A special tissue embedded in the uterus wall with the help of which human embryo gets nutrition from mother’s blood.Function:\tTo provide large surface area for glucose and ${{O}_{2}}$ to pass through mother’s blood to the embryo.\tThe metabolic waste generated by embryo is removed through placenta into mother’s blood. Placenta is a disc shaped tissue which is embedded in the uterine wall. This tissue helps in providing nutrition to the growing embryo and removes waste from mother\'s blood. Helps in transfer of glucose and oxygen from mother\'s blood te embryo and excretion from embryo to mother\'s blood Provides nourishment to the embryo |
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| 58295. |
Name the unit of inheritence |
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Answer» Gene Gene |
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| 58296. |
How does process of respiration take place inside a cell |
| Answer» Respiration is a process in which glucose is broken down with the help of oxygen and energy is released along with the production of carbon dioxide and water.There are two types of respiration i) aerobic respiration ii) anaerobic respiration.Aerobic respiration- the process of respiration that takes place in the presence of oxygen.Example- glucose(a 6-carbon molecule) breaks into pyruvate(a 3-carbon molecule) and in the mitochondria pyruvate is broken down into 3 molecules of carbon dioxide and water with the release of energy.Glucose →\xa0pyruvate + energy à carbon dioxide + water + energy.Anaerobic respiration- the process of respiration that takes place in the absence of oxygen.Example-\tIn yeast cells, glucose (a 6-carbon molecule) breaks into pyruvate (a 3-carbon molecule) and pyruvate is then converted to ethanol(a 2-carbon molecule) and carbon dioxide.Glucose →\xa0pyruvate + energy → ethanol + carbon dioxide + energy.\tIf there is a lack of oxygen in our muscle cells, pyruvate breaks in a different pathway. Glucose (a 6-carbon molecule) breaks into pyruvate (a 3-carbon molecule) and pyruvate is then converted to lactic acid (a 3-carbon molecule) along with the release of energy.Glucose → pyruvate + energy → lactic acid + energy. | |
| 58297. |
Parllel and series ?? |
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| 58298. |
What is the function of ATP |
| Answer» It is the energy which help in proper growth development of our body | |
| 58299. |
What is cerebo spinal fluid? |
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Answer» Vande matram ??????????vande matram Fluid filled between membranes of brain |
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| 58300. |
Explain haploid and diploid. With example |
| Answer» Haploid has one set of chromosome while diploid i two sets of cchromosomes. | |