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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.
| 45301. |
Explain the formation of MgCl2 molecule?? Step by Step ?????? |
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Answer» Magnesium (Mg) has atomic no. is 12 so E.C. will be 2,8,2 (valency=2) now chlorine has atomic no. 17 so E.C. will be 2,8,7 (valency=1).It mrans that atom of mg needs 2 electrons and atom of chlorine needs 1 electron so 2 electrons of mg can be fulfilled by 2 atoms of chlorine 1 for each Common anyone |
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| 45302. |
Name any one olfactory and gustatory indicators in our body? |
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Answer» Olfactory receptor = Nose/it help to detect smell.Gustatory receptor=tongue / it help to detect taste. Olfactory receptor : nose Gustatory receptor : tongue Oh this one They are not present in our body Olfactory\xa0indicator: noseGustatory\xa0indicator: tongue |
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| 45303. |
Can anyone give appropriate definition of refractive index.. |
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Answer» Sorry it\'s refraction It is the ratio of sin of angle of incidence and angle of reflection Your most wlcm Ok thankyou? Ratio of speed of light in air / vaccum to the ratio of speed of light in a fiven medium is known as refractive index of that medium. |
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| 45304. |
Guys plz tell diff b/w stock and scion |
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Answer» Ur most wlcm.......☺☺☺ Tq Dear A rooted stem into which a scion or a bud is grafted is called stock and A piece of young stem or bud which is inserted into a root stock is called scion........... |
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| 45305. |
Pass kitne wala heaa give me answer plz....... |
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Answer» Complete ur question Kya pass Kaisa pass..... |
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| 45306. |
What is gametogenesis |
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Answer» gametogenesis is defined as the study of genetic The process in which the cell undergoes meiosis to form gametes..... Rehne digyia ayush jiii maine toh bs aise he puch liya tha ....sorry agar apko buraa laga toh |
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| 45307. |
What is one volt of potential? |
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Answer» If one joule of work is done to move one unit charge from one point to the another in unit time then it is known as one volt potential One volt is defined as energy consumption of one joule per electric charge of one coulomb. 1V = 1J/C.? It is also called 1 volt of potential But what is one volt of potential If 1 joule of work is done in 1 second is called 1 volt |
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| 45308. |
Short note on excretion |
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Answer» The process of removal of toxic wastes from the body of an organisms is called excretion . Excretion is a process to exit waste or harmful substance from living body.? |
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| 45309. |
Short note on respiratory system |
| Answer» The human respiratory system is a series of organs responsible for taking in oxygen and expelling carbon dioxide. The primary organs of the respiratory system are lungs, which carry out this exchange of gases as we breathe. | |
| 45310. |
Why thus white light do not split into different colour when it is passed to the glass slab? |
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Answer» Due to the faces of these two objects, in glass slab oppo. surfaces are parallel but in prism it is not so Its because for splitting of white light such glass is required which has intersecting lines but in glass its parallel and bot opposite sides are parallel I think it depends upon shape of the slab |
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| 45311. |
What is excreation in plant |
| Answer» In plant the waste material such as oxygen, old leaves falls down, gum which we gwlet from the plant etc are the part of excreation in plant. This all things are waste in the plant | |
| 45312. |
What is double circuletion |
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Answer» Systematic circulation: blood moves from the heart to the body parts and back to the heart Pulmonary circulation means the to transfer blood from the heart to the lungs and back to the heart. It invludes two circulation: pulmonary circulation and the systematic circulation. It is the transfer of blood from heart for two times Transfer of blood from heart two time are called blood circulation. |
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| 45313. |
How many male gamets are released in embryo sac |
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Answer» TwoOne fertilises with female cell and another with two polar nuclei Two......shayad |
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| 45314. |
Difference between solar cell and solar cell panel. |
| Answer» 1) Solar cell is a device which converts solar energy into electrical energy2) When multiple solar cells combine it forms solar cell panel | |
| 45315. |
Explain me geotropism |
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Answer» Buzz ji apne mere man ki bat likh di.... hinglish.... ka mst use??? Hinglish ka best upyog Ped paudho mein root gravity ke kaaran niche jaata hain so it shows +ve geotropism and plants ka shoot paart gravity ke vipreet upar jaata hain then it is -ve geotropism Movement in plants due to gurutwakarshan bal is known as geotropism. |
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| 45316. |
Electricity chapter k notes de do koi |
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Answer» Check in this app Ye bhi isi app pe hain....... check kro na |
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| 45317. |
what is Hemodialysis ? |
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Answer» Bt yu tried.....it well good job??? Full of typing error ???? ik ik kidneys are vital organ for survival several factors like infection injury or restricted blood flow to kidney reduce the activity of kidney this leads to accumulation of poisonous what\'s in the body which can even lead to death in case of kidney failure and artificial kidney can be used and artificial kidney is a device to remove nitrogenous waste product from the blood through dialysis artificial kidney container number of tubes with semi permeable lining suspended in a tank filled with fluid .this fluid has the same osmotic pressure as blood except that is DU gard of nitrogenous wastes the patient blood is passed through that used during this passage the waste product from the blood pass into dialysis fluid by diffusion the purified blood is pumped back into the patient this is similar to the function of the kidney but it is different since there is no reservation involved normally in a healthy adult the initial filtrate in the kidneys is about 180 how are the reviews Partial or total inability of kidneys to carry on excretory and salt water regulatory function is called renal or kidney failure.It 19 occurs due to injury,infection r restricted blood flow to kidneys.In 8 such cases,blood urea rises abnormally which can even led to death.For the an artificial kidney is used to filter the blood of patient.For this purpose a dialysis machine is used.The process of purifying the blood by an artificial kidney is called Haemodiaosis |
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| 45318. |
Why dilute HNO3 does not evolve H2 gas with metal above H in reactivity series?? |
| Answer» Ya.....bcoz its highly oxidisong in nature, when H2 is evolved it oxidise ot and convert it into water....... | |
| 45319. |
Why nobal gas is categorised as non-metals?????? |
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Answer» In complete sentence we can say that- All the noble gases except radon occur in the atmosphere. They are chemically unreactive. They have their valence cell orbitals completely filled. Since non metal are the element which accepts electron to complete their octet while noble gases already have a complete octet.so noble gas is a non metal First of all, not everyone considers noble gases to be non-metals but those who do argue that since many PHYSICAL properties of noble gases resemble that of non-metals, they should be included in non-metals. because its tendency to lose electrons or gain electrons is 0 and is a gas. |
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| 45320. |
write one approach towards the conservation of forests |
| Answer» Giving the local forest dwellers control in the management of forests as they are stakeholders who depend on the forest and thus, the conservation of forests is in their best interestExample : Revival of Sal forests in the south-western districts of West Bengal in \'70s & \'80s | |
| 45321. |
Explain the construction and working of human eye with labelled diagram |
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Answer» Working of the eye: The light rays coming from an object enter the eye through the cornea and pupil and get refracted through transparent lens. The beam of light converges and forms a real and inverted image on the retina and gets converted into electrical signals that are sent to the brain through optic nerve. Brain interprets these signals and produces a vision. How does a gober and biogas are work in plant Diagram k liye ncert pe chle jaao yha nahi bn payga |
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| 45322. |
State the expected ratio of genotypes BB and Bb in F2 progeny |
| Answer» BB:Bb:bb=1:2:1 | |
| 45323. |
How do the traits get expressed? |
| Answer» Traits are coded in the form of genes, genes are sequences which would code for particular polypeptide which would eventually lead to the formation of particular proteins, proteins would then lead to the expression of particular trait. ❤ | |
| 45324. |
Name the glands associated with male reproductive system. |
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Answer» 1.Seminal vesicle2.Prostate gland 3.Cowpers gland❤ Testis |
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| 45325. |
In practical application, the concave mirrors are in............shape |
| Answer» curved..❤ | |
| 45326. |
Mai hu |
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Answer» Bhai m bhi hu Hm bhi hain???? |
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| 45327. |
define nutrients? why is nutrients necessary for organism |
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Answer» Those substances frm which living organisms derive energy are called nutrients....they are necessary to provide energy for various metabolic processs is the body, it is essential for growth of new cells and repair and replacement of worn out cells, it is needed to develop resistance against various diseases.... Ur most wlcm.....??? thanz Food is made up of several kinds of energy rich substances called nutrients.Good nutrition is an important part of leading a healthy lifestyle. Combined with physical activity, your diet can help you to reach and maintain a healthy weight, reduce your risk of chronic diseases (like heart disease and cancer), and promote your overall health............... |
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| 45328. |
What is resistivity,? |
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Answer» The resistivity of a material is the resistance of a wire of that material of unit length and unit cross-sectional area. The unit for resistivity is the ohm-metre.The resistivity of a material depends on its nature and the temperature of the conductor, but not on its shape and size.A good conductor has less resistivity, whereas a bad conductor or insulator has high resistivity.The resistivity of semi-conductors lies between that of conductors and insulators. The resistivity of a metallic conductor increases with an increase in its temperature, whereas the resistivity of a semi-conductor decreases with an increase in its temperature. Resistivity is given by:where, l is the length of the conductor andA is the area of the cross section of conductor.\xa0If in the above equation, we take, l\xa0= 1 m and A = 1 m2then, R = ρ\xa0Therefore, resistivity is defined as the resistance per unit length per unit area of scross-section.\xa0SI unit of resistivity is Ohm metre.\xa0We have,\xa0\xa0SI unit of resistivity =\xa0 |
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| 45329. |
why is our sky blue |
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Answer» The scattering of various components of sunlight is purely dependent on the wavelength of the light. Sunlight, reaching the surface of the earth is scattered in all directions by the gases and particles present in the atmosphere. Blue light having shortest wavelength is scattered most by the atmospheric particles. Thus,\xa0sky\xa0appears blue to an observer from the surface of the earth.For an astronaut staying in the international space station orbiting the Earth, the colour of the sky will be black because the light reaching it does not scatter. Scattering is absent at higher altitudes.\xa0 Because the particles of atmosphere are comparatively smaller than the particles of visible light...so theu are effective in scattering the light of shorter wavelength which is blue...so sky appers blue Sky is blue in color because tiny molecules of air scatter blue light from the sun becoz blue is scattered more than other colors as it travels as shorter smaller waves.So we see a blue sky most of the time.......... |
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| 45330. |
What are the functional group |
| Answer» These are those group on which chemical properties of compound depends | |
| 45331. |
What are two properties of carbon |
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Answer» Hiiii Two properties of carbon is:-1) It show infinite catenation power2) It show tetravalency Tetravalency and catenation TETRAVALENCY AND CATENATION....... |
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| 45332. |
What is the amphothermic oxide |
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Answer» They are some oxides which act like both acids and base are known as amphoteric oxides..fir example zinc oxide and aluminium oxide Oxides which behaves like both acid as well as base in reactions are known as the amphoteric oxides........ ex- zinc oxide...... |
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| 45333. |
Gyes goodmorning ?? |
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Answer» Gd morning...... Gud morning |
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| 45334. |
Diff between mineral and ore |
| Answer» Minerals:.............1)All the naturally occurring substances of metals which are present in the earth’s crust are known as Minerals.2)Minerals are native form in which metals exist.3)All Minerals are not ores4) example: clay is the mineral of aluminium................Ores:...........1)Ores are usually used to extract metals economically.2) A large amount of metals are present.3)Ores are mineral deposits.4)All ores are minerals.5)bauxite and cryolite are the ores of aluminium............... | |
| 45335. |
Why is 22 corrot gold is used in making jewellery |
| Answer» Because pure gold i.e, 24 carat gold is soft enough that can be break by hand....... to make it stronger some amount of other metal is added to it making it 22 carat and suitable for making jwellery.......... | |
| 45336. |
Define: a) digestion. b)respiration. c)excretion |
| Answer» Digestion is the process of breaking down complex food into simpler nutrients................... Excretion is the process of excreting the undigested or waste food from the body. ........... Respiration is\xa0a process in living organisms involving the production of energy, typically with the intake of oxygen and the release of carbon dioxide from the oxidation of complex organic substances........... | |
| 45337. |
Expalin the reactivity series of metal |
| Answer» The reactivity series of metals is a series in which metals arranged in the decreasing order of reactivity..............i.e, potassium >sodium calcium >magnesium >aluminium> zinc >iron >tin> lead >hydrogen >copper> mercury> silver >gold >platinum................ | |
| 45338. |
Diff between covalent and ionic compound |
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Answer» Ionic bonds are those which are formed by transferring of electrons.Certain elements form compounds with other element , by either losing electrons electrons , or by taking electrons.Due to the exchange of ions , these compounds contain cations/anions in them.And thus , they have high melting and boiling points..............Covalent compounds are formed by sharing of electrons. Elements form compounds by sharing electrons with other element They have low melting and boiling points ............. baki book me dekh lo Covalent compounds are those compounds which are formed by two non-metals while ionic compounds are those compounds which are formed by one metal and one non-metal |
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| 45339. |
Preparation uses and formula of bleaching powder,Baking soda washing soda, p.o.p,Naoh |
| Answer» Refer to ncert | |
| 45340. |
Fresh milk has ph of 6 do you think will change if we converted into curd |
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Answer» Bacteria change the fresh milk into curd by producing lactic acid beacuse of presence of lactic acid in curd, the Ph will down form 6 to lower. Yes |
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| 45341. |
Distil water do not conduct electricity where as rain water does |
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Answer» Rain water contain small amount of acid beause of presence of acid it conduct electricity. Distilled water is pure water , it does not contain ions. Therefore it does not conduct electricity. Pure distilled water is not a good conductor of electricity because it is a weak electrolyte and dissociates only slightly to give Hydrogen and hydroxide ions. However rain water contains acidic impurities. Since acids are good conductors of electricity rain water conducts electricity |
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| 45342. |
Why should curved and sour substnce should not be kept in brass |
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Answer» Brass and copper vessel contain copper and zinc metal which react with acid present jn curd and sour substance forming soluble salts. These salts are poisonous in nature and make curd unfit for consumption. Because sour Substances are acidic in nature and reactive to brass .....so when it kept in brass it become poisonous or toxic.. |
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| 45343. |
Range of eye in the see |
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Answer» Nearby: 25cmFar: infinity 25 cm to infinity 25 cm |
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| 45344. |
What is saprotrophic nutrition? |
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Answer» That mode of nutrition in which an organism obtain its food from decaing and dad animals Saprotropic is a mode of nutrition in which organism depend upon dead and decaying decaying matter the mode of nutrition in which an organisms depend on dead and decaying metter, are known as saprotrphic mode of nutition. |
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| 45345. |
How is sodium carbonate from a mixture of na4cl and NaHco3 |
| Answer» Heat NaHCO3 then you will get sodium carbonate with carbon di oxide and water | |
| 45346. |
Kabir bhai tenu miss you aaa |
| Answer» | |
| 45347. |
Good Night to all...Sweet dreamz...Take Care..Bye????????? |
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Answer» Abhi nahi stop plzz... Ha ha rose to gayi to tum kyu rukoge Gd nyt |
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| 45348. |
Hun mere aali kithe nu chlgi??Kaha ho Miss Gulab?? |
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Answer» I wish aaj na aye rose . Bigaad ditta munde nu Help me |
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| 45349. |
What is resistor? |
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Answer» Resistance is the property of a conductor, which determines the quantity of current that passes through it when a potential difference is applied across it.......... and resistor.. bataya hai Wait Difference between resistance and resistor A device that resists the flow of current...... please bata do?? Koi |
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| 45350. |
Hello Rohit!!Kaha chle gye ab tum? |
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Answer» Ab aap kha chali gyi Mai yhi hu |
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