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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.
| 54351. |
explain with help of diagram the transportation in human beings |
| Answer» no one could answ er my que | |
| 54352. |
3 Dis similarities b/w strong acid and weak acid |
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Answer» strong acids have more h+ ion wek acids have less h+ionstrong-hclweak-ch3cooh And examples also |
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| 54353. |
What happens to the concentration of acid,when it is diluted?? |
| Answer» the concentration of h + Ion decreases | |
| 54354. |
Is invisie molecular movements essential for life ? |
| Answer» It provides energy , transport food and water need for respiration and many more. Invisible moments is essential for life in order to sustain the life. | |
| 54355. |
I want to know examination patter 2020 |
| Answer» Check the exam pattern here :\xa0https://mycbseguide.com/cbse-syllabus.html | |
| 54356. |
Describe the mechanilism of bloood circulism through human heart |
| Answer» The heart is the major organ of our body which\xa0continuously pumps oxygen and nutrient-rich blood\xa0throughout our body to sustain life.\xa0As the heart\xa0beats, it pumps blood through a system of blood vessels, called the circulatory system.\xa0The blood enters the heart through two large veins, the inferior and superior vena cava, emptying oxygen-poor blood from the body into the right atrium. As the atrium contracts, blood flows from your right atrium into your right ventricle through the open tricuspid valve. When the ventricle is full, the tricuspid valve shuts. This prevents blood from flowing backward into the right atrium while the ventricle contracts. As the ventricle contracts, blood leaves the heart through the pulmonic valve, into the pulmonary artery and to the lungs, where it is oxygenated. The oxygenated blood then returns to the heart through the pulmonary veins. And finally, the oxygenated blood from the left ventricle is pumped through the aorta to the whole body. | |
| 54357. |
Write the following process of digestion:- 1. Hydrochloric acid, 2. Enzyme, 3. Saliva? |
| Answer» \tHydrochloric acid\xa0activates pepsinogen into the enzyme pepsin, which then helps\xa0digestion\xa0by breaking the bonds linking amino\xa0acids, a\xa0process\xa0known as proteolysis.\t\tExamples of\xa0digestive enzymes\xa0are:\tAmylase, produced in the mouth.Pepsin, produced in the stomach. ...Trypsin, produced in the pancreas.\t\t\tThe\xa0digestive\xa0functions of\xa0saliva\xa0include moistening food, and helping to create a food bolus, so it can be swallowed easily. | |
| 54358. |
Why proton called H+ |
| Answer» An atom of hydrogen contains 1 proton, 1 electron and 0 neutrons. When hydrogen loses an electron to become H+ only a proton remains. | |
| 54359. |
What is typical range of voltage and power of a solar cells? When exposed to the sun |
| Answer» | |
| 54360. |
what is reacaction |
| Answer» Reaction is a chemical process in which substances act mutually on each other and are changed into different substances, or one substance changes into other substances. | |
| 54361. |
give the conditions and show formation of rainbow |
| Answer» The condition for the formation of rainbow is that the angle of incidence must be greater than the critical angle. Also another necessary condition is that the rainbow is always formed in opposite direction of the sun | |
| 54362. |
What is the definition of resistivity. Please anyone tell me |
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Answer» Resistivity is\xa0a measure of the resisting power of a specified material to the flow of an electric current. Resistivity (ρ ) : It is defined as the resistance offered by a cube of a material of side 1 m when current flows perpendicular to its opposite faces. |
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| 54363. |
Which colour has largest wavelength |
| Answer» Red | |
| 54364. |
What is the end product of protein. |
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Answer» Amino acid Amino acid Amino acid Proteins into amino acids Amino acid Amino acids |
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| 54365. |
What is the need of limph in our body. |
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Answer» 1.\xa0Lymph supplies mature lymphocytes to the blood.2.\xa0Lymph acts to remove bacteria and other particles.3. It also maintains fluid balance.4.\xa0Lymph carries digested and absorbed fat from intestine and drains excess fluid from extracellular space back into the blood. Its lymph* It transports fat and bring back extracellular fluid into circulation. |
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| 54366. |
During electrolysis of water a few drops of sulphuric acid is added why |
| Answer» Because pure water does not Conduct electricity, in electrolysis of water, electricity must be conduct. Thats why we added few drops of H2So4 in water. | |
| 54367. |
Tell theOptical illusions in daily life |
| Answer» A spoon dipped in water | |
| 54368. |
Why should chemical equation be balanced ? Write a typical example also. |
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Answer» As we know that mass of reactant is always equal to mass of product. It fullfill the law of conservation of mass and mass can neither be created and nor be destroyed.Example: 2h2+o2~2h2o chemical eqn should be balanced to satisfy the law of convervation of mass |
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| 54369. |
Calculate the number of electrons constituting one coloumb of charge |
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Answer» 1/1.6 *10^-19= 6.25*10^18 electrons 6x10raise to power 18 |
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| 54370. |
What is villi ? any 1 |
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Answer» Villi are the finger like projections present in small intestine. Villi help in the absorption of digested food which passes through it. During small intestine villi increase the surface area for the absorption of food material.it look finger like projection Small finger like projections to increase the surface area of small intestine You are welcome bro Small finger like projections And they increased the area of small intestine Tq broo?? Small finger like projections present in our small intestine |
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| 54371. |
How many harmones in our human body |
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Answer» 50 different harmones Tq bro 30 trilluon |
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| 54372. |
What is Bio catalysts? |
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Answer» ? Thanx bhai Bio catalysts are those organic enzymes which, either faster or slowers the organic chemical reactions ( metabolic reactions) without taking part in the reaction. Example- pepsin , salivary amylase, etc. |
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| 54373. |
Is Human Eye and colourful World chapter will coming in our 2019-20 Board examination?? |
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Answer» ?? Ok thanks Hm.....But aayega ....mene aaj hi dekha h Thanks But syllabus me nahi hai. Yess ... |
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| 54374. |
What is newlands law of octaves |
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Answer» Newlands’ law of octaves\tIn 1866 an English scientist John Newlands arranged the elements in the order of\tincreasing atomic masses starting from the hydrogen having lowest atomic mass to the 56th element named thorium having the highest atomic mass among the elements discovered at that time.\tIt was found that every eighth element possessed properties similar to that of the first. Sodium is the eighth element after Lithium possessing properties similar to one another. Similarly, beryllium and magnesium resemble each other.\tThis was comparable to octaves found in music and hence was called the ‘Law of Octaves’ or ‘Newlands’ Law of Octaves’.\xa0\tBut the Law of Octaves was applicable only up to calcium, after which every eighth element did not resembled the first element. •newland arranged the non elements in the increasing order of atomic masses.•he started with hydrogen and ended with the 56th element thorium.•he also foynd that every 8th element had properties similar to the first one.•this was similar to the octaves found in music and he called it as law of octaves.Example: Barilium and Magnesium Lithium and sodium |
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| 54375. |
Whst do you mean by crystal lattice? |
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Answer» A regular three-dimensional arrangement of constituent particles in a crystal in which each particle is represented by a point\xa0is called crystal lattice. Nice duty. |
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| 54376. |
Explain briefly about electromagnetic induction? |
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Answer» Electromagnetic InductionThis process by which a changing magnetic filed in conductor induces a current in another conductor is called electromagnetic induction. The scientist Michael Faraday did many experiments in this field.The phenomenon of electromagnetic induction is the existence of an induced current in a circuit (such as a coil) placed in a region where the magnetic field motion changes with the time. The magnetic field may change due to relative motion between coil and magnet placed near the coil . We know that a current-carrying conductor also produces magnetic field that changes with a change in the current flowing through it. Thus if a coil is placed near to a current-carring conductor, an induced current in the coil may setup due to a change in the current through the current-carrying conductor. Hi, electromagnetic induction means the phenomenon of generation of an electric current in a circuit from magnetic effects i.e.,by changing the magnetic flux linked with it is called electromagnetic induction. |
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| 54377. |
The magnification produced by a plane mirror is +1.what does this mean? |
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Answer» Soni suraj is ur real name It means that the size of the image is equal to the size of the object. Positive sign indicates that the image is virtual and erect. |
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| 54378. |
why does the colour of copper sulphate solutions change when an iron nail is dipped in it |
| Answer» When an iron nail is dipped in copper sulphate solution, the more reactive iron displaces the less reactive copper from copper sulphate solution.{tex}CuS{O_4}(aq) + Fe(s) \\to FeS{O_4}(aq) + Cu(s){/tex}In this reaction, the iron nails become brownish in colour and blue colour of copper sulphate solution fades away. | |
| 54379. |
What is electrical energy? |
| Answer» The work done by a source of electricity to maintain a current in an electrical circuit is called as electrical energy.q = ItW =VqW = vItE = VIt | |
| 54380. |
What is row |
| Answer» A row is a horizontal group of values within a table. It contains values for multiple fields, which are defined by columns. | |
| 54381. |
Zinc+silver nitrate ➡️ zinc nitrate + silver |
| Answer» Zinc + Silver nitrate \u200b{tex}\\to{/tex}\u200b Zinc nitrate + SilverZn + 2Ag (NO)3\u200b{tex}\\to{/tex}\u200b Zn (NO3)2 + 2Ag. | |
| 54382. |
What do you mean by Chipko Andolan what important role was played by Chipko Andolan |
| Answer» The movement which started in Reni village in Garhwal by Sunderlal Bahuguna, who was a noted environmentalist for preservation of forests in Himalyas\xa0by hugging them and not allowing cutting of these trees. This movement\xa0was called as Chipko Andolan.\tThe Chipko movement quickly spread across communities and media, and forced the government, to whom the forest belongs, to rethink their priorities in the name of forest produce.\tDue to participation of local people, it led to the efficient management of forests for their basic needs such as food and other benefits. | |
| 54383. |
What are the main energy resources that you can see in your surrounding? Explain in brief.. |
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| 54384. |
What is the phenomenon responsible for the blue colour of sky? |
| Answer» The phenomenon responsible for the blue colour of sky is the tyndall effect or the dispersion of light in which the blue light scattered more so it is visible to us . | |
| 54385. |
Difference between catabolic and anabolic respiration |
| Answer» \tCatabolismAnabolismCatabolism breaks down big complex molecules into smaller, easier to absorb moleculesAnabolism builds molecules required for the body’s functionalityThe process of catabolism releases energyAnabolic processes require energyHormones involved in the processes are adrenaline, cytokine, glucagon, and cortisolHormones involved in the process are estrogen, testosterone, growth hormones and insulinExamples of catabolic processes are proteins becoming amino acids, glycogen breaking down into glucose and triglycerides breaking up into fatty acidsExamples include the formation of polypeptides from amino acids, glucose forming glycogen and fatty acids forming triglyceridesIn catabolism, potential energy is changed into kinetic energyIn anabolism, kinetic energy is converted into potential energyIt is required to perform different activities in living entities.It is required for maintenance, growth, and storage\t | |
| 54386. |
Longest bone in human bing |
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Answer» Femur Femur or tigh bone |
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| 54387. |
What is meant by gangue? |
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Answer» Your wlcm? Thanks Gungun ?? Sand , rock and other unwanted impurities found in ore is termed as gangue |
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| 54388. |
What is colour of CuCl2 |
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Answer» Copper(II) chloride dihydrate is a beautiful green crystalline solid, while its diluted aqueous solution has a pale blue colour. Acche se padhai nahi ki kya ncert ka 2 chapter hi to hai |
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| 54389. |
SI unit of conductance of a conductor?? |
| Answer» Inductance is reciprocal of resistance. So its SI unit is 1/ohm Or Ohm to the power minus one. | |
| 54390. |
All board questions cbse |
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| 54391. |
Name the alloy used to making medals or welding purpose |
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Answer» Thnx Hello Welcome Solder,alloy of tin and lead |
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| 54392. |
What is reproduction in human body and *** ? |
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| 54393. |
What does the cord of an electric oven not glow while its heating element does? |
| Answer» Because as we know that they are made from alloy, which has high resistance than pure metal and does not go in oxidation when high amount of heat produce in it and not burn. | |
| 54394. |
What are two forces responsible for the upward movement of water in xylem tissue? |
| Answer» Ascent of sap is the phenomena responsible for pullup of water.There are two theories regarding the ascent of SAP one is transpiration pull theory in which due to the continuous loss of water in the process of transpiration the water keeps to come up another one is fruitful theory in which due to the Osmosis of water and Minerals ions in the root hairs tends to the water to come up with the force but that is not reliable for the Big trees and Big trees such as of hundred metres to transportation full theory is liable to everyone universally | |
| 54395. |
How acid and bases tasted |
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Answer» By litmus and turmeric paper solution Acid test star and base test beta By litmus paper |
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| 54396. |
Can someone send me notes of chapter 2 acid bases and salts |
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| 54397. |
Practical notes |
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| 54398. |
What is commercial farming |
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Answer» Commercial farming is a type of farming in which crops are grown for commrecial use only . It is a modernized mothod of farming that is undertaken on a large scale. In this type of farming a large land,labour and machinery are used.For example,plantation is a type of commercial farming.??? The farming that is done with motive of earning money |
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| 54399. |
What is the raw material required for making soap..? |
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| 54400. |
Are aaj koi ayega ga bhi ki sab iss app se sanyas le chuke hai ! |
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Answer» Hmm good night ?Gn Hi ji Hlo ji? Aaj sabhi ghode bech k soo gay hai.??ya phir .................pata nhi? Hi Hiiii |
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