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InterviewSolution
This section includes InterviewSolutions, each offering curated multiple-choice questions to sharpen your Science knowledge and support exam preparation. Choose a topic below to get started.
| 1201. |
Why you cannot see objects in a dark room |
| Answer» <p>We see thingswhen the light from a particularobjectis received by our eyes.Butwhen there isdarkness, noobjectis reflecting lights. Hence there is no change of receiving light from thoseobjectsand thereforewecan'tseeit. That's why it is called "darknessis the absence of light only"</p> <p>Whe we see an object, we are actually seeing the light that is reflected off of it. Different materials reflect different frequencies of light in different ways and we interpret this as color. Things that don’t reflect light look black (they absorb rather than reflect light, that’s why your black pants will feel warmer than your white T-shirt on a sunny day). When it’s dark that means that there is no light (from the sun or bulbs) to be reflected so no objects reflect light, so everything looks black.</p><p>In summary, our eyes are like antennae for light waves and our brain uses that info to “see”, if there are no light waves to receive then we can’t see.</p><p>Just like a radio can’t play a song if it’s not receiving any radio waves. Maybe it’s not receiving waves because the station isn’t broadcasting ( comparable to the sun going down and the lights turned off) or because the antenna is broken (blindness).</p><p>Or you can think of it as not being able to load a webpage when your internet is shut off. The webpage still exists but you can’t see it because you don’t have a signal.</p> | |
| 1202. |
Do you think the Indian princes were short-sighted in their approach tothe events of 1757?1. |
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| 1203. |
(A) 10(B) 8(C) g-Let p & q be the number of natural numbers which are less than or equal 20 and are prime & compositerespectively, then 20-p-q is equal to(A) 1(D) 3(C) 2r A,46 A 52, Ä°PIA, Near City Mall, Jhalawar Road, Kota (Raj-324005(B) 0 |
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| 1204. |
Burning which type of change? |
| Answer» <p>The burning of wax (like a candle) is both a chemical and a physical change.</p><p>The physical change is obvious because the wax literally melts, changing from a solid to a liquid.</p><p>The chemical change is not so obvious, but definitely involved. It happens when the wax vapor reacts with oxygen in the surrounding air to form new substances (i.e. combustion), notably carbon dioxide and water.</p> <p>burning is undesirable change</p> | |
| 1205. |
what is the function of neuron |
| Answer» <p>Neurons are nerve cells which are the functional units of the nervous system. The three main parts of a neuron are dendrite, cell body and axonFunctioning of its three parts.</p><p>Dendrite: It detect information and conducts the messages towards the cell body.</p><p>Cell body: It contains nucleus, mitochondria, and other cell organelles. It maintains the growth of the cell.</p><p>Axon: It conducts messages away from the cell body and pass to the next neuron.</p> <p>thax </p> | |
| 1206. |
15, Balance the following equations0) Na ,MyCh 110(vi) NH: + CuO--,Cu +vilh HNO, Ca(OH)G) BaClyOA(OH),→ Ca(NO3)2Nago+ H,O1)2 |
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| 1207. |
It Tetaruation, and retarding force?. The masses of two bodies are in the ratio of 3 :4. On applying a certairbody, an acceleration of 6 m/s2 is produced. What will be the accelerationwhen the same force is applied on it?6 The velocity of a hall ofm |
| Answer» <p>Let mass of Body A = 3mmass of body B = 4mForce applied = F</p><p>for Body AF= mass×accelrationF= 3m×6= 18N</p><p>for Body BF = mass× accelerationa = F/m=18m N/4m= 4.5m/s²</p> | |
| 1208. |
Q.13. Sita's scarf fell into the fire and burned slowly, and produced |burning hair odour. Scarf may be made of(a) Wool(b) Silk(c) Cotton(d) Nylonसीता का स्कार्फ आग में गिर गया और धीरे-धीरे जलनेलगा उसमें से बालों के जलने कीगंध आ रही थी। स्कार्फ बना हुआ था-(a) ऊन से.(b) रेशम से(c) कपास से(d) नाइलोन सेQ.14. Accidently one day, some iron fillings are mixed with tea leaves,They will be separated by using-(a) Sieve(6) Water(c) Magnet(d) Airअचानक एक दिन गलती से कुछ लोहे की छीलन चाय की पत्ती में गिर गए. उन्हें निम्नमें से किस के द्वारा अलग कर सकते हैं-(a) छलनी(b) जल(c) चुम्बक(d) हवा |
| Answer» <p>By using magnetic separation</p> <p>By using magnet , iron fillings can be separated From tea leaves</p> <p>kis question ka ans chahiye</p> <p>13)wool14)magnet is the best answer </p> <p>14)iron fillings can be separated by magnet</p> <p>Que. 13 Scarf made up of woolQue . 14 They will be seperated by magnet.</p> <p>13 wool 14 magnet is the best questions</p> <p>by using magnets ' iron fillings can be separated from tea leaves </p> | |
| 1209. |
5.Whichseparationtechniquewill you applyseparation of the following.Sodium chloride from its solution in waterb. Butter from curdc. Tea leaves from tead. Iron pins from sand(2) Science - IX (A) |
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| 1210. |
the process of seperation of tea leaves by strainer is called |
| Answer» <p>Filtration is good for separating aninsoluble solidfrom a liquid. (An insoluble substance is one that does not dissolve).</p><p>Sand, for example, can be separated from a mixture of sand and water using filtration. That's because sand does not dissolve in water.</p><p>This can be used to separate tea leaves from prepared tea.</p> | |
| 1211. |
रा (P 8] (21] (१ 9] (४८ 69 + घन हॉट [/*+ [५ + 8ट) ८५ |
| Answer» <p>We knot √169 = 13</p><p>So, 51 + √169 = 51 + 13 = 64</p><p>√64 = 8</p><p>So, 248 + 8 = 256 </p><p>√ (256) = 16</p><p>So, (a) option is correct</p> <p>thanks</p> | |
| 1212. |
15Answer any FlvE of the foilowingAbility to sense the surrounding is the property of living organisms ? Substantiate the statement withexamples5x3 |
| Answer» <p>The most obvious and technically complicated feature of all living organisms is this ability to sense their surroundings or environment and respond to these environmental stimuli which could be physical, chemical or biological. We sense our environment through our sense organs.</p> | |
| 1213. |
LAUSITHE BOTEE AHER USERwith added mineraBisleri |
| Answer» <p>water botle us the correction answer</p> <p>mineral water bottle</p> <p>Bisleriis an Indian beverages company best known for its eponymous brand of bottled mineral water. ...Bisleri, an Italian mineral water company, was launched in Mumbai in the year 1965. The Parle Group purchasedBislerifrom the Italian entrepreneur Signor FeliceBisleriin 1969.</p><p>Please Like My Answer And Then I Will Also Like Your Answer.</p> <p>Bisleriis an Indian beverages company best known for its eponymous brand of bottled mineral water</p> | |
| 1214. |
Name the tissue responsible formovement in our body.What does a neuron look like?Give three features of cardiacmusclesWhat are the functions ofareolar tissue? |
| Answer» <p>Three features of cardiac musclesare: (i)Cardiac musclesare involuntarymusclesthat contract rapidly, but do not get fatigued. (ii) Thecellsofcardiac musclesare cylindrical, branched, and uninucleate. (iii) They control the contraction and relaxation of the heart.</p> | |
| 1215. |
What is Alignment |
| Answer» <p>An arrangement in which two or more things are positioned in a straight line or parallel to each other.</p> | |
| 1216. |
LessonsPlants: Living and survivingfeatures of plants growing is plai,thre |
| Answer» <p>a farmer grows only corn and lettuce. the farmer plans to plant 455 rows this year. the number of rows of corn will be 2.5 times the number of rows of lettuce. ...</p> <p>these plant grow in plain,flat, surface of the earth. trees have several branches and leaves. many of these plants grow in warmer climate of the plain and shed most of these leaves in autumn. </p><p>is the answer of the question</p> <p>These plant 🌿 grow on surface and run soli only</p> | |
| 1217. |
A wire is looped in the form of a circle of radius 35 cm. If it is rebent in the form of a square, what will bethe length of each side of the square? |
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| 1218. |
d. I reproduce mainly by cell division. |
| Answer» <p>The organisms thatreproducethrough the asexualreproductionwhich is generally thecell division. There is no sexualreproductionor the fusion of male and female gametes. With thedivisionof thecell, new object or body is formed with the same appearance and resemblance of the parentcell.</p><p>Please Like My Answer And Then I Will Also Like Your Answer.</p> | |
| 1219. |
Can there be DNA replication without celldivision? |
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| 1220. |
why does micelle formation take place when soap is added to water . will a micelle be formed in other solvents such as ethanol also? |
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| 1221. |
(d)Cities (Urban areas) |
| Answer» <p>Effects of deforestation on cities: Deforestation in cities can increase the risk of many natural calamities such as floods and droughts in that area. Also, it canleadto global warming due to an increase in the level of CO2 in the atmosphere as a result of vehicular and industrial pollution.</p> <p>thank you ma'am</p> | |
| 1222. |
13.sAn ideal gas changes from state a to state b as shown in Fig. What is the work done by the gas in theprocess ?(A) zero(B) positive(C) negative(D) infinite |
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| 1223. |
86. HIV can replicate in the followingcells of the human bodya. Helper T cellsb. Kupffer cellsc. Neutrophilsd. All of the above |
| Answer» <p>Answer is (a) helper T cells</p> <p>can u explain plis</p> <p>Within these bodily fluids, HIV is present as both free virus particles and virus withininfectedimmune cells. HIV infects vital cells in the human immune system such as helper T cells (specifically CD4+T cells), macrophages, and dendritic cells.</p> <p>The HIV virus attacks a type of white blood cellcalled T-helper cells (also called CD4 cells). These cells are important when it comes to having a healthy immune system as they help us fight off diseases and infections.</p><p>HIV cannot grow or reproduce on its own. Instead, it makes new copies of itself inside T-helper cells. This damages the immune system and gradually weakens our natural defences. This process of infected T-helper cells multiplying is called the HIV life cycle.</p><p>How quickly the virus develops depends on your overall health, how early you are diagosed and started on treatment, and how consistently you take your treatment. It’s important to know thatantiretroviral treatmentwill keep the immune system healthy if taken correctly, preventing the symptoms and illnesses associated with AIDS developing.</p><p>option A.</p> | |
| 1224. |
on a winter night, our helper was found fainted in his room. There were ashes of burnt coal in his room. Can youexplain the probable reason for the incident? |
| Answer» <p>i dont know please run your own mind</p> | |
| 1225. |
what are the two most essential conditions for a chemical reaction to take place?Give one example of each |
| Answer» <p>Ans :- Reactions require an input of energy to initiate the reaction; this is called the activation energy (EA).</p><p>Activation energy is the amount of energy required to reach the transition state.</p><p>The source of the activation energy needed to push reactions forward is typically heat energy from the surroundings.</p><p>For cellular reactions to occur fast enough over short time scales, their activation energies are lowered by molecules called catalysts.</p><p>Enzymes are catalysts.</p> | |
| 1226. |
. Where is the male gamete formed in a flowering plant? |
| Answer» <p>thank you sir</p> | |
| 1227. |
2. Name the features which help the birds to flv. |
| Answer» <p>birds have:</p><p>lightweight, smoothfeathers– this reduces the forces of weight and drag.</p><p>a beak, instead of heavy, bony jaws and teeth – this reduces the force of weight.</p><p>an enlarged breastbone called a sternum for flight muscle attachment – this helps with the force of thrust.</p> | |
| 1228. |
EXERCISES1. Why is reproduction essential for organisms?2. Which is a better mode of reproduction: sexual or asexual? Why?3. Why is the oflspring formed by asexual reproduction referred to as clone?4. Offspring formed due to sexual reproduction have better chances ofsurvival. Why? Is this statement always true?How does the progeny formed from asexual reproduction differ fromthose formed by sexual reproduction?Distinguish between asexual and sexual reproduction. Why is vegetativereproduction also considered as a type of asexual reproduction?5.. |
| Answer» <p>Sexual reproduction is considered to be a better mode of reproduction because it creates a hybrid that has more vigor than the parents. It also leads to variations that enable organisms to adapt to the changing or prevailing environment.</p> | |
| 1229. |
19. Write two points of differences between sexual reproduction and asexual reproduciowhy variations are observed in the offspring formed by sexual reproduction |
| Answer» <p>Ans :- </p><p>The differences between sexual and asexual reproduction are following.1.in sexual reproduction two parents are involved but in sexual reproduction only one parent is involved .</p><p>2.sex cells or gametes are involved in sexual reproduction but no cells are involved in asexual reproduction.</p><p>3.in sexual reproduction the young ones are not exactly copy of the parent but in asexual reproduction young ones are exact copy of the parent.</p><p>During sexual reproduction two different parent i.e. male and female take part as a result of which the newly formed zygote possess genetic material of both parents. It leads to interchange of genetic information between two gametes which is passed to the progeny and develops variation. Offsprings produced as a result of sexual reproduction are genetically different from the parents due to the process of meiosis, during which crossing over takes place which creates recombination.</p> | |
| 1230. |
list three properties of a shadow |
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| 1231. |
List the properties of magnetic lines of force. |
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| 1232. |
(0 The next generation/ |
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| 1233. |
(f) The next generation |
| Answer» <p>Effects of deforestationon thenext generation:Deforestationis slowly changing our environmental conditions. It is responsible for global warming, soil erosion, greenhouseeffect, drought, floods, and many other global problems. As a result, thenext generationwill have to face severeconsequences of deforestation</p> | |
| 1234. |
biological catalyst |
| Answer» <p>Enzymes are proteins functioning as catalyststhat speed up reactions by lowering the activation energy. A simple definitionof an enzyme is that it is abiological catalystthat accelerates a chemical reaction without altering its equilibrium.</p> | |
| 1235. |
what is a catalyst |
| Answer» <p>.</p><p>a substance that makes a chemical reaction happen faster</p> | |
| 1236. |
do wet clothesn tihe ehodema |
| Answer» <p>Becausesunlightcreates heat and evaporates thewetsurface ofclotheswhich makes themdry. ... Due tofast evaporation process. The air isdryand hot that's whyclothes quickly dry..</p> | |
| 1237. |
Explain about vegetative propogation |
| Answer» <p>Vegetative propagationis a form of asexualreproductionof a plant. Only one plant is involved and the offspring is the result of one parent. The new plant is genetically identical to the parent.</p> | |
| 1238. |
and (i) its terminal voltageE-2.In the figure each cell has an emf of 1 5 V and internal resistance of O 40 Ω. Calculate:12021836Ω1.8Ω(i) currentI(ii) potential difference across A and B(ii) current in the 36 Ω resistorRaj)-324016&55? IPIA. Near City Mall, Jhalawar Road, Kota R |
| Answer» <p>Total EMF in circuit will be 1.5 ×4 = 6 v +1.5v =7.5 v because EMFs between D and C are in parallel and this combination is in series with 1.5 v in AB. Now total resistance is in branch AD is 6 ohm as all resistance are in parallel. Total resistance of ckt is 6+1.8=7.8 ohm . Now total current I will be 7.5/7.8 = 0.96 A.</p> <p>wrong</p> | |
| 1239. |
38Find the angle between the vectors Ai + 2 j-k and B+ j-2k |
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| 1240. |
The direction of magnetic field produced by a linearcurrent carrying conductor is given by |
| Answer» <p>Ans :- Magnetic Field Generated by Current: (a) Compasses placed near a longstraightcurrent-carrying wire indicate that field lines form circular loops centered on the wire. (b)Righthand rule 2 states that, if therighthand thumb points in the direction of the current, the fingers curl in the direction of the field.</p> | |
| 1241. |
2. Consider the following two statements:(A) Linear momentum of the system remains constant.(B) Centre of mass of the system remains at rest.(a) A implies B and B implies A(b) A does not imply B and B does not imply A.(c) A implies B but B does not imply A.(d) B implies A but A does not imply B. |
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| 1242. |
you are in a dark room. Can you see objects in the room? Canyou see objects outside the room. Explain. |
| Answer» <p>Whe we see an object, we are actually seeing the light that is reflected off of it. Different materials reflect different frequencies of light in different ways and we interpret this as color. Things that don’t reflect light look black (they absorb rather than reflect light, that’s why your black pants will feel warmer than your white T-shirt on a sunny day). When it’s dark that means that there is no light (from the sun or bulbs) to be reflected so no objects reflect light, so everything looks black.</p><p>In summary, our eyes are like antennae for light waves and our brain uses that info to “see”, if there are no light waves to receive then we can’t see.</p> | |
| 1243. |
Suppose you are in a dark room. Can you see objects in the room? Canyou see objecis outside the room. Explain. |
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| 1244. |
State any two conditionsessential for good health.essential for being free of disease.questions necessarily the same2. State any two conditions3. Are the answvers to the aboveor different? Why? |
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| 1245. |
What do you mean by departmentation ? Discuss its needs in Modern business? |
| Answer» <p>Ans :- Departmentationis the foundation of organisation structure. Departmentationmeans division of work into smaller units and their re-grouping into bigger units (departments) on the basis of similarity of features. Each department is headed by a person known as departmental manager.</p><p>When organisations sell to customers with differentneeds, departmentsare created onthebasis of customers. Customerdepartmentationis “the organising of jobsandresources in such a way that each departmentcan carefullyunderstand andrespond to differentneedsof specific customer groups”.</p> | |
| 1246. |
State any one of the Newton's three laws of moti |
| Answer» <p>Newton's third lawis: For every action, there is an equal and opposite reaction. The statement means that in every interaction, there is a pair of forces acting on the two interacting objects. The size of the forces on the first object equals the size of the force on the second object.</p> | |
| 1247. |
Q.6 Convex mirrors are used as rear view mirrors in the motor vehicles because(A) the reflect light better than the other mirrors(B) they produce images which are more clearer than those produced by others.(C) the produce magnified images(D) they form images which are much smaller than the objects |
| Answer» <p>(b) is the correct answer</p> | |
| 1248. |
The plant used as an alternative of cotton-(1) Sphagnum(2) Funaria(3) Riccia(4) Andria |
| Answer» <p>option 1. sphagnum might be answer</p> | |
| 1249. |
8. A body of mass m 10 kg is moving in a medium and experiences a frictional force F--kv. Its intialspeed is vo = 10ms". I, after los, its energy is-mg,the value ofk will be :-(1) 10 kg m (2) 10 kg m ' (3)10 kg m (4) 10[JEE-Main-2017]kg s" |
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| 1250. |
Acquired Immunity. |
| Answer» <p>Immunity is acquired actively when a person is exposed to foreign substances and the immune system responds. Passive immunity is when antibodies are transferred from one host to another. Both actively acquired and passively acquired immunity can be obtained by natural or artificial means.</p> | |