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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.
| 66201. |
What is pollination? State its significance. |
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Answer» Transfer of pollen grain from the anther to the stigma is known as pollination....... Pollination is the process of transfer of pollen grains from anther and their deposition on he stigma of the flower. Pollination can be self-pollination or cross pollination.* Self-pollination is the transfer of pollen grains from anther to the stigma of the same flower.* Cross pollination is the deposition of pollen grains from anther of one flower to stigma of another flower of another plant.Pollination is essential for the process of fertilisation. Fertilisation thereby results in the formation of fruits and seeds. Without pollination there wouldn\'t be any fruit and seed formation. Transfer of pollen grain from the anther to the stigma is called pollination It is the process by which pollen grain r transferred fron anther to stigma . Its significance is to take pollen grains to stigma for fertilization ....... Hope its help u ? |
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| 66202. |
Define thermite reaction? How it is used to join the crack railway track and machine parts |
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Answer» The reduction of a metal oxide to form metal by using aluminium powder as a reducing agent is called a thermite reaction. It is an exothermic reaction in which a large amount of heat is evolved. This reduction property of aluminium is used in thermite welding for joining the broken pieces of heavy iron objects like girders, railway tracks or cracked machine parts.Example: A mixture of iron (III) oxide and aluminium powder is ignited with a burning magnesium ribbon. Aluminium reduces iron oxide to produce molten iron metal with the evolution of heat.Fe2O3(s) + 2Al(s) → 2Fe(l) + Al2O3(s) + HeatThe molten iron produced is then poured between the broken iron pieces to weld them. Thermit is the reaction in which The amount of heat evolved is so large that the metals are produced in the molten state.The reaction of iron Oxide( Fe2O3)with aluminium is used to join railway track this can be shown as, :Fe2O3+ Al----Al2O3+ heat |
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| 66203. |
Explain the electric motor working properly please... |
| Answer» \tWhen electric current is passed into the rectangular coil, this current produces a magnetic field around the coil.\tThe magnetic field of horse shoe-type magnet then interacts with the magnetic field of the coil and causes the coil to rotate continuously.\tIf ABCD is in horizontal position current from battery enters the coil through brush B1, and commutator half ring C:. The current flows in the direction ABCD\tand leaves via ring and brushB2\tThe direction of current is from A to B, the direction of current is from C to D. The force on side AB of the coil is in the downward direction. Whereas the force on the side CD of the coil is in the upward direction. ABCD rotate in anti-clockwise direction.\tWhile rotating when the coil reaches vertical position then the brushes B1 and B2 will touch the gap between the commutator rings and current to the coil is cut off. But the coil does not stop rotating because it has already gained momentum.\tThe coil CD comes on the left side and AB comes to the right side. Again they come in contact with brush B1 Current direction is reversed.\tThe reversing of current in the coil is repeated after every half rotation due to which the coil continue to rotate as long as current from the batter is passed through it. The rotating shaft of electric motor can drive a large number of machines which are connected to it. | |
| 66204. |
Name a commom nutrient thqt is absorbed in yhe small interstine and reabsorbed by the kidney tubules |
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Answer» Glucose is a common nutrient that is absorbed in the small intestine and reabsorbed by the kidney tubules.Glucose is the simplest form of sugar and the most basic units of carbohydrates obtained by the digestion of carbohydrates in the small intestine. It is one of the most important sources of energy. Therefore, it is absorbed in the small intestine by the surrounding blood capillaries so that it can be transported or moved on by the blood to different parts of the body.When the blood reaches kidney, it gets filtered and here the process of the formation of urine occurs. During this process, important substances ( like glucose) which were absorbed in the small intestine are reabsorbed by the tubules of the kidney so that they are not released out by the body in urine.\xa0 Glucose & amino acids |
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| 66205. |
Explain with the help of example 1) homologous organs 2) analogous organs |
| Answer» Homologous organs :\tSimilar structure , different function\tDevelopmental origin is same\tDivergent evolutionExample :\tFlipper - whale\tWing - bat\tFore limb -horse\tPaw - cat\tHand - human\tThorn - bougainvillaea\tTendril - cucurbitaAnalogous organ :\tSame function , different structure\tConvergent evolution\tNot anatomically similarExample :\tWings of a butterfly and wings of a bird.\tFlippers of penguin and dolphin\tEye of an octopus and a mammal ( both differ in retinal position but function is same )\tSweet potato( root modification) and potato ( stem modification) - both help in storage of food. | |
| 66206. |
Example of homologous organs?? |
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Answer» Homologous organs:\xa0Have the same structural design and developmental origin.\xa0But they have different functions and appearance.\xa0Example: The forelimb of a frog, a man, a lizard and a frog seem to be built from the same basic design of bones, but they perform different functions. Arm of humans , wing of birds , wing of bats ,etc r the example of homologous organs |
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| 66207. |
What is the chemical formula of DETERGENT?????..... |
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Answer» Yes ur answer is right shweta ...... I think , sodium dodecyl benzene sulphate Ch3-(ch2)11-ch2-so4-Na and sodium N dodecyl ch3-(ch2)10-ch2-so4 na and C15h31cooNa namely sodium pamitate☺ |
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| 66208. |
What is vital force theory???.....can any tell me...... |
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Answer» As the organic compounds were believed to be obtained from living organisms (plants and animals), a Swedish chemist Berzelius in 1815 proposed that organic compounds could not be prepared in the laboratory and could be only produced by some mysterious force existing in the living organism, which forced was termed as \'Vital Force\' (which comes from a latin word, \'vita\' means \'life\'), and this theory is known as vital force theory.According to the vital force theory-I) All organic compounds were isolated (extracted) from living bodies (plants and animals).II) The organic compounds were the products of a vital force and could not be synthesized in the laboratory.III) The organic compounds did not obey the laws of chemical combination to which organic compounds were subjected. In chemistry (carbon and its compound)...... In 1815 Berzelius, a Swedish chemist suggested a theory which is known as the vital force theory. According to this theory "organic compounds are produced only under the influence of some mysterious force existing in the living organisms”. But in 1828 Friedrich Wohler, a German chemist rejected the vital force theory From which chapter is that ques. |
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| 66209. |
What is Blue flame?????....... |
| Answer» With increasing oxygen supply, less black body-radiating soot is produced due to a more complete combustion and the reaction creates enough energy to excite and ionize gas molecules in the flame, leading to a blue appearance. | |
| 66210. |
About ameaba |
| Answer» 1) The mode of nutrition in Amoeba is holozoic nutrition.2) Amoeba takes in food using temporary finger-like extensions called pseudopodia.3) These pseudopodia fuse over the food particle forming food vacyole.4) Inside the food vacuole, complex substances are broken down into simple ones which then diffuse into the cytoplasm.5) The remaining undigested material is moved to the surface of the cell and thrown out. | |
| 66211. |
What is the product of the following reaction:Al2O3 + NaOH ???AndAl + NaOH ??? |
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Answer» No, ZnO+NaOH Gives Na2ZnO2 +H2 Nd ZnO + NaOH ???Zn + NaOH ??? Product of both is same NAALO2 +H2 |
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| 66212. |
How I should study for better results in board |
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Answer» Most welcome Thnku anushka ji Ya, aashu is right Study with full concentration |
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| 66213. |
Why He group number is 18 instead of 2nd group as its valence?? |
| Answer» Because in 18th group the elements are gases and belong to the noble family and helium shows the noble gas property. Hence it is placed in the 18 group of modern periodic table | |
| 66214. |
Is astigmatism Part Of our syllabus? |
| Answer» Not really but u just need to understand that it is a defect of eye in which vertical and horizontal lines are not visible. | |
| 66215. |
What process is used to convert ethanol to ethane? |
| Answer» To convert Ethanol (CH3COOH) to ethane (C2H6) we have to use reducing agents such as Nickel or Platinum. | |
| 66216. |
What do you mean by chapter human eye |
| Answer» Manav netra. ??️ | |
| 66217. |
When sky looks blue? |
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Answer» When the molecules in the air scatter blue light from the sun more than they scatter red light..☺ so, sky looks blue? Due to the refractive index After rainfall sky looks blue |
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| 66218. |
Mendel gave which term for gene |
| Answer» Tall and dwarf pea plant | |
| 66219. |
Human eye explain |
| Answer» In a normal eye, the light rays come to a sharp focusing point on the retina. The retina functions much like the film in a camera. ... The retina receives the image that the cornea focuses through the eye\'s internal lens and transforms this image into electrical impulses that are carried by the optic nerve to the brain. | |
| 66220. |
explain earthing |
| Answer» Earthing is a wire which neutral the access amount of current | |
| 66221. |
What is brine and give example |
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Answer» What is rayon plZ tells fast Thanks all ???☺️☺️ Brine is a concentrated salt of water Brine is a mixture of sodium chloride and water, when electricity is passed through it,, it will form sodium hydroxide. The aqueousSolution of common salt or nacl Brine is the high concentration of salt in water example salt water .... Anyone onLine |
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| 66222. |
What happen mix quike lime hcl |
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Answer» Why say sorry Calcium chloride is formed with the liberation of H2 gas Sorry, it will form calcium chloride and water Calcium chloride and water are formed It will form calcium chloride and liberate hydrogen gas. |
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| 66223. |
How download |
| Answer» From aap | |
| 66224. |
What is snell laq |
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Answer» Snell\'s law is that the ratio of the sine of angle of incidence to the ratio of sine of angle of refraction is constant given the colour of light and the pair mediums. Thnx Ryt honey For a given pair of media Snell\'s law states that sin i upon sin r is constant. |
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| 66225. |
What is short crkit ? Make one factor or codination that can lied to it |
| Answer» When live wire and neutral wire come in direct contact with each other this is known as short circuit | |
| 66226. |
Define electrostatic |
| Answer» Relating to stationary electric charges or fields as opposed to electric currents | |
| 66227. |
Give some example of exothermic reaction and endothermic reaction |
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Answer» Exothermic:-C+O2-----CO2+heatEndothermic:-N2+2O2-------2NO2-heat Respiration process, the burning of mg wire in air to form mgo , the reaction btw n and o to form nitrogen monoxide. Are the examples of exothermic reaction And the decomposition of CaCo3 , the electrolysis of water to form h and o. Are the few e.g of endothermic reaction Example of exothermic reaction is when zinc reacts with HCL to form zinc chloride and hydrogen. Example of endothermic is decomposition reaction of calcium carbonate. |
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| 66228. |
Which is the master gland in our body |
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Answer» Pituitary gland and master of master is hypothalamus Pituitary gland Pituitary gland as it control all the hormones of the body. Pituitary gland Hypothalamus... Pituitary gland |
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| 66229. |
Who is the largest gland in our body |
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Answer» Liver Liver is the largest gland in our body The largest gland is liver.... Liver ... Liver Liver |
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| 66230. |
Why is the normal eye not able to see clear the object placed closer than 25 CM |
| Answer» As our eye cannot focus the object placed closer than 25cm on the retina we are unable to see the objects clearly | |
| 66231. |
Can i get most important question for final board exams? |
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Answer» But from where?? Dear? Yes |
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| 66232. |
who is mendilain |
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Answer» Mendelian is a scientist who discover F1 generation in pea plant melian is scientist which discover the f1 generation in pea plant |
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| 66233. |
What is the chemical test to check CH3 c o o h |
| Answer» Firstly,reacting it with sodium bi-carbonate. If co2 is released then, it is carboxylic acid.Co2 by passing the gas through limewater and this will turn the solution milky.Reaction with excess concentrated sulphuric acid at 443K gives rise to enthene. | |
| 66234. |
Trace the sequence of events through reflex arc which occur when a bright light is focused on eye. |
| Answer» Since it is a reflex action, the following stages are:- Receptors-------spinal cord-------(through motor neurons)----effectors. | |
| 66235. |
What do you mean by 3r |
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Answer» Recycle, reuse and reduce I think,Yes honey is right..... 3r are:-reduce.reuseand recycle Reduce ,reuse,recycle 3r refers to reduce, recycle, and reuse. 3 multiplied r |
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| 66236. |
Describe any four theories of origin of life on Earth? |
| Answer» | |
| 66237. |
Determine the equivalent resistance of three connected in parallel |
| Answer» 1/R= 1/ r1 +1r2+......+1/rn | |
| 66238. |
Define black salt |
| Answer» It is a type of rock salt with pungent smell and also it is good for eyesight. | |
| 66239. |
3 R rule |
| Answer» Reduse reuse recycle | |
| 66240. |
Define the changes of flower after fertilization? |
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Answer» There is a formation of diploid zygote nd it devels into an embryo,which form the future plant.The endosperm cell serves as a sources of nutrition fotr the developing embryo. The ovule becomes seed. The ovary become fruit. Ovary turns to fruit,ovule into seeds , petals shed off. |
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| 66241. |
What chemical reaction takes place in Soda acid fire extinguisher |
| Answer» Na2CO3 + H2SO4 gives Na2So4 + CO2 + H2O. | |
| 66242. |
Define terms:-(¡) Analogous organs(¡¡) vestigial organs(¡¡¡) *** chromosome |
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Answer» (i) Analogous Organs : Analogous organs are organs, that have similar look and/or functions in different organisms, but do not share a common evolutionary origin.For example,* wings of insects vs. wings of bird.* In some plants, stems, may look and function like leaves...but they have different origins.(ii) Vestigial Organs : Vestigial organs are group of organs with no particular use now but may have been useful in ancestors.For example tailbone coccyx or hip bones in whales.(iii) *** chromosome : *** chromosomes are the 23rd pair of chromosomes that determine the *** of an individual.X Chromosome - Female (XX) andY Chromosome - Male (XY).Half of total chromosomes come from father, half come from mother.\xa0 *** chromosomes definition .... though these two chromosomes pair with each other meosis , there is usually very minimal homology or recombination btw them ...primarily because of large difference in their genetic content and size... Tnx Analogous organs are the organs which do same function but are structurally different. Ex...wings of birds |
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| 66243. |
Name four salts cause permanent hardness of water? |
| Answer» Calcium and magnesium salts are cause permanent gardeners of water . These salts are affected by chloride and sulphate... | |
| 66244. |
What is the full form of emf? |
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Answer» What is electro motive force EMF-Electro Motive Force Thanks It\'s electro motive force Electro motive force |
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| 66245. |
Why are germinating seeds preferred to show the process of respiration?? |
| Answer» The germinating seeds in the conical flask release CO2 during respiration, which is absorbed by the KOH solution kept in the small test tube. This creates a partial vacuum in the flask that forces the water up the delivery tube. Thus, it proves that germinating seeds produce carbon dioxide during respiration. If the seeds are boiled, then the organelles(stomata) would be killed. | |
| 66246. |
How to find groups and periods in periodic table |
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Answer» Number of shells is equal to its period number. No. Of electrons in the last shell gives us group number when 10 is added to it See agar valence shell mein 1ya 2 electron hai toh uska group bhi 1 ya 2 hoga par for 3,4,5.....and so on hum usme +10 karte hai for example valence shell me 4 electron hai toh uska group 14 hoga(10+4) .....I HOPE IT Is Clear to you.......(Nobel gas ka group 18 hi hoga kyoki ye ek exceptional case hai).... |
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| 66247. |
Draw well labelled diagram of human excreatory system? |
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Answer» Sis NCERT book me chapter 6 ka figure no 6.13 me print hai Frnd i think u know that how can we draw here..?? then y r u asking here...? Cut yourself and check. ...... How we will draw it here????? Yes chetna... Refer your NCERT book.....it is not possible here.... First draw kidneys than ureters which are connected with kidneys and urinary bladder and a urethra where the nitrogenous waste is excrete.. How can I draw here?? |
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| 66248. |
What is the structure of 5bromo 3,5methyl hexanoic acid? |
| Answer» Yah kaise banaw | |
| 66249. |
Why unsaturated compound are more reactive than saturated |
| Answer» Because unsaturated compound have more stability than saturated compounds . | |
| 66250. |
Where is the zygote location in the flowers after fertisation |
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Answer» Between ineguments Zygote located in the ovule....its present in the ovary.,, |
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