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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.
| 2451. |
The densities of two gases are in the ratio of 1:16. The ratio of their rates of diffusion isA) 16: 1Q5.B) 4:1C) 1:4 |
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| 2452. |
Practical based (2x2-4)Express the following temperatures in kelvin scaland 373 CWhat is the physical state of water at250°C and 100°C |
| Answer» <p>The boiling point of water is 100°C. So the physical state of water at a temperature of 250 degree Celsius which is much above its boiling point will be gaseous state. The physical state of water at its boiling point temperature of 100 degree Celsius will be bothliquidstate as well as gaseous state</p> | |
| 2453. |
Llalsportation. At what price should she sell the. Sahil purchased a watch for 1 5500. He sold it to Hitesh at a gain of 10%. If Hitesh sold it to Mita at a lossof 5% how much Mita paid for it? |
| Answer» <p>Explanation : CP for Sahil = 15500 gain 10% SP for Sahil = CP for Hitesh = 15500*1.1 = 17050 loss 5% SP for Hitesh = CP for Mita = 17050*0.95 = 16197.5 </p><p>Solution : Mita paid 16197.5 </p><p> If you find this answer helpful then like it.</p> | |
| 2454. |
1808: 12060 F2 3 4 5 6Time (in hrs) →0 |
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| 2455. |
Transpiration |
| Answer» <p>Transpiration is the process of water movement through a plant and its evaporation from aerial parts, such as leaves, stems and flowers. Water is necessary for plants but only a small amount of water taken up by the roots is used for growth and metabolism. The remaining 97–99.5% is lost by transpiration and guttation.</p> | |
| 2456. |
(1) What are the things that can be done by applying force?Ans. |
| Answer» <p>We can do so many work by applying forcewe can lift a box , we can drink something with our hand . we can push someone </p> | |
| 2457. |
What is transpiration |
| Answer» <p>ranspiration is the process by which moisture is carried through plants from roots to small pores on the underside of leaves, where it changes to vapor and is released to the atmosphere.</p> <p>Transpiration is the process of water movement through a plant and its evaporation from aerial parts, such as leaves, stems and flowers.</p> | |
| 2458. |
40.Two things that drive away such insects: |
| Answer» <p>Ans :- Use Citronella To Keep Mosquitoes At Bay. It is a known fact that mosquitoes (and virtually all the other insects) cannot stand the smell of citrus, and lemons in particular. </p><p>Bay Leaf. </p><p>Catnip. </p><p>The Wormwood.</p><p>Rosemary. </p><p>Rue. </p><p>Peppermint. </p><p>Coconut Oil.</p> | |
| 2459. |
. What are the two things that a mole represents |
| Answer» <p>Ans :- </p> | |
| 2460. |
Force experienced by charge moving withvelocity 'v' in a magnetic field B is given byF qvB. Find the dimensions of magneric fiend |
| Answer» <p>For a charge (q) moving with a speed v under the influence of a magnetic flux density of B, the force (F) exerted is given asrnrnF = q (v x B)rnorrnB = F / qVrndimensionallyrn[B] = [MLT-2] / [AT].[LT-1]rnso, [B] = [MT -2 A -1 ]</p> | |
| 2461. |
- What are semantic tags? |
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| 2462. |
6 What is airtual mage? Give one sttuation where aleas. |
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| 2463. |
A number is as much greater than 21 as it is less than 71. Find thenumber |
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| 2464. |
4. What happens when iron powder is added toblue copper sulphate solution? |
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| 2465. |
b. Rate of evaporation of an aquous solution decreaseswith increase in humidity |
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| 2466. |
2.2 Gtve an example of a solid solution in which the solute is a gas.2.3 Define the follorin |
| Answer» <p>thanks</p> | |
| 2467. |
Give explanation for the following:Aromatic amines are more basic than aliphatic amines.b. Although phenoxide ion has more resonating structurescarboxylic acid are more acidic than phenols. |
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| 2468. |
1. Define solute and solvent. |
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| 2469. |
can water dissolve any amount of a subtance?expalin |
| Answer» <p>As we all know that water is a universal solvent but we will not say that water will dissolve any amount of substance water can dissolve some thing upto its saturation level.Please like the solution 👍 ✔️</p> | |
| 2470. |
Photon of which light has maximum energy: |
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| 2471. |
3.Can water dissolve any amount of a substance? Explain. |
| Answer» <p>No it is wrong that water can dissolve any amount of substance when it is found that saves supersaturated solution is found water even unable to dissolve any other substance on even for the heating</p> | |
| 2472. |
4 Choose the correct answer:(a) Ring wells were used for:1. bathing2. washing clothes3. irrigation4. drainage |
| Answer» <p>Ring wells were used for drainage</p> | |
| 2473. |
what is universal solvent |
| Answer» <p>Auniversal solventis a substance that dissolves most chemicals. Water is called theuniversal solventbecause it dissolves more substances than any othersolvent. However, nosolvent, including water, dissolves every chemical. ... This mean polarsolventsdissolve polar molecules, such as salts.</p> <p>water is universal solvent</p> | |
| 2474. |
A for theen 10oxidisungCasuh forName the kind of particle present in(i) Sodium hydroxide soln.(ii) Carbonic acid(iii) Sugar soln.ic the oxide of a metal "MV |
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| 2475. |
b. amphibians3. How do fish exchange gases? |
| Answer» <p>Fish use gills for gas exchange.Gills have numerous folds that give them a very large surface area.The rows of gill filaments have many protrusions calledgill lamellae.The folds are kept supported and moist by the water that is continually pumped through the mouth and over the gills.Fish also have an efficient transport system within thelamellaewhich maintains the concentration gradient across the lamellae.The arrangement of water flowing past the gills in the opposite direction to the blood (calledcountercurrent flow) means that they can extract oxygen at3 times the rate a human can</p> | |
| 2476. |
What is botany? |
| Answer» <p>Ans:Science that deals with study of herbs, shrubs, climbers and trees.</p> <p>science that deals with study of herbs , shrubs , climbers and 🌲 trees is the correct answer of the given question</p> <p>Botany, also called plant science(s), plant biology or phytology, is the science of plant life and a branch of biology. Abotanist, plant scientist or phytologist is a scientist who specialises in this field.</p> <p>science that deals with study of herbs, shrubs, climbers and trees</p> <p>Botany, also called plant science(s), plant biology or phytology, is the science of plant life and a branch of biology. Abotanist, plant scientist or phytologist is a scientist who specialises in this field.</p> <p>science that deal with study of herbs,shrubs, trees and climbers is correct answer </p> <p>Botany is like a study that we have study of shurbs , climbers and tress etc.,</p> | |
| 2477. |
define icones in botany |
| Answer» <p>icones plantarum?</p> | |
| 2478. |
What is moment of inertia of a cylinder of radiusr, along its height?inr(a) mr22mp2Zmimr |
| Answer» <p>cylinder is same as ring </p><p>so, for solution cylinder it is mr²/2 </p><p>and for hollow cylinder it is = mr²</p> | |
| 2479. |
How does spinning affectthe air resistance of limeseeds? |
| Answer» <p>spinning changes the direction of movement in air,thus affects the air resistance. </p> | |
| 2480. |
Differentiate between epidermal and cork cells. |
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| 2481. |
How does the cork act as a protective tissue? |
| Answer» <p>The secondary meristem forms on its outer side several layered thick cork or the barks of the trees. Cork act as a protective tissue because (i) Its cells are dead and compactly arranged without intercellular spaces. (ii) They also have deposition of suberin on the walls that makes them impervious to gases and water.</p> | |
| 2482. |
What is meant by sea breeze? When does it occur?Answer the following questions.In the arrangement shown in the figure, pins A, B, C, and D are fixed tocircular metal loop with the help of wax.InsulatorMetal loopPinsCandleThe circular metal loop is heated at the point A with the help of a candle flame.In which order would the pins fall if AB < AD? Justify your an77 |
| Answer» <p>aap Dav public school mai paste ho naa</p> <p>Maui big usi class aur usi. school mai</p> <p>Maine sare questions ka answer aapko send kiya hai</p> | |
| 2483. |
Why is water used as a coolant in vehicies? |
| Answer» <p>Ans :- Waterhas a very high specific heat capacity, that is, to raise the temperature of unit mass ofwaterby 1 °C, a large amount of heat is required.Carradiators get heated up by large temperatures.Watercan easily take up this heat without getting heated up itself.</p> | |
| 2484. |
. Plane mirrors can be used for decorative purposes. |
| Answer» <p>As aplane mirrorreflects the light, the multiplemirrorsare arranged such that the multiple images are formed. Theplane mirror can be used for decorative purposes.</p> | |
| 2485. |
How iss clayey sol useful for crops |
| Answer» <p>Due to the very small size of the particles ofclayey soil, particles are packed tightly and therefore can retain water.Clayey soilis also rich in organic matter. For growing cropssuch as wheat, gram, and paddy, thesoilthat is good at retaining water and rich in organic matter is suitable.</p> | |
| 2486. |
. Describe the principle process involved in the purification of the metal by thisC) exteZóne Refining method |
| Answer» <p>Zone-refiningThis method is based upon the principle of fractional crystallisation, i.e., difference in solubilities of impurities in molten and solid state of metal. Semiconductors like silicon, germanium, gallium arsenideand indium antimonide are purified by this method. Elements of very high purity are obtained by this method..</p> | |
| 2487. |
Lg8i amount of humus4. Explain how soil is formed.5. How is clayey soil useful for crops? |
| Answer» <p>4)Soil is formed by weathering, wearing away and breaking down of rocks into fine particles.</p> | |
| 2488. |
2. How are forests helpful in savingenvironment? |
| Answer» <p>Forestscover about a third of the earth's land area and are essential to the health of ourenvironment. For example, trees andforestsabsorb and store much of the carbon dioxide that otherwise wouldbe contributing to climate change.</p> | |
| 2489. |
The water supplied to your home is found to contain(a) What harm can drinking such water cause(b) How will you make this water suitable for drinking |
| Answer» <p>(a)Waterborne diseases are caused by drinking such water. Contaminated water can cause many types of diarrheal diseases, including Cholera, and other serious illnesses such as Guinea worm disease, Typhoid, and Dysentery.(b) Ways toDisinfect Water</p><p>BoilWaterfor 1-5 Minutes. One of the easiest ways todisinfect wateris to boil it.</p><p>Use aWaterFilter.</p><p>BringWater PurificationTablets. </p><p>Solar and UVWater Purification. </p><p>Chlorine, Iodine, Cloth and Other Methods.</p> | |
| 2490. |
What are the main parts of an artificial satellite? |
| Answer» <p>Thesatelliteconsists of manyparts. Themain satellite partswhich include transponder, antenna subsystems, solar cell, battery backup,camera,thrusters. ...</p><p>Antenna subsystems: ...</p><p>Solar cell and battery backup- It keepssatelliterunning inspace.</p> | |
| 2491. |
1.. In a reaction, 5.3g of sodiumwith 6 g ofacetic acid. The products were2.2 g of carbon dioxide, 0.9water and 8.2 g of sodiumacetate. Show that these |
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| 2492. |
8.The motion of a particle along a straight line is describedby equation : x = 8 + 12 - 1where x is in metre and t in second. The retardation ofthe particle when its velocity becomes zero, is(a) 24 ms 2 (b) Zero (c) 6 m 2 (d) 12 m s- |
| Answer» <p>v=dx/dt=12-3t^2a=dv/dt=-6thence when velocity becomes zeroc)6m/s^2</p> <p>The correct answer is 12m/s^2</p> | |
| 2493. |
The resultant of À and B is perpendicular to AWhat is the angle between A and B? |
| Answer» <p>Taking A and B as P and Q</p><p>Letθ be the angle between P and Q. Let the resultant R make an angleα with P. Given thatα = 90°.We have the formulatanα = Q sinθ/(P + Q cosθ)sinα / cosα = Q sinθ/(P + Q cosθ)</p><p>Cross multiplying , we get(P+Q cosθ)sinα =Qsinθcosα(P+Qcosθ)sin90°=Q sinθcos90°(P + Q cosθ) = 0⇒ cosθ =−P/Qθ = cos−1(−P/Q)</p> | |
| 2494. |
is salle rrade 1 Cnive |
| Answer» <p>Salt is generally produced one of three ways: deep-shaft mining, solution mining or solar evaporation.Examplesofsaltsinclude NaCl, NH4F, MgCO3,andFe2(HPO4)3.</p> | |
| 2495. |
paddy define |
| Answer» <p>Paddy, also calledrice paddy, small, level, flooded field used to cultivatericein southern and eastern Asia. Wet-rice cultivationis the most prevalent method offarmingin the Far East, where it utilizes a small fraction of the total land yet feeds the majority of the rural population</p> | |
| 2496. |
U WLUIJulDeep-sea diving vessels have to withstand pressure from the crushing effect of sea water acting(A) Upwards(B) Downwards(C) Side ways(D) in all directions |
| Answer» <p>Answer:d)In a direction</p><p>Explanation:The pressure at a depth h in water is calculated using</p><p>P = ρ g h</p><p>So, this pressure has a high magnitude at a large depth.</p><p>But, also note that the pressure is same in all directions at a given depth. So, the submarine will experience a pressure on all of it's walls whether they are below or above. Imagine holding a banana in your hand and crushing it b closing your fist. The same would happen to the submarine. Hence, the answer is (d) in all directions.</p> <p>in all directions is right answer.</p> <p>(d) in all direction is the answer</p> <p>b is the best answer </p> <p>Answer ⬇</p><p>Option d) In all directions</p> | |
| 2497. |
EXERCISE 7.3Δ ABC and Δ DBC are two isosceles triangles onthe same base BC and vertices A and D are on thesame side of BC (ses Fig. 7.39), IfAD is extendedto intersect BC at yshow thatGu) APbisects Z Aas well as D(iv) AP is the perpendicular bisector of BC.Fig. 7.39 |
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| 2498. |
mannitol food is stored in |
| Answer» <p>Fucus belongs to class-Phaeophyceae, in which reservefoodis found in form of laminarin,mannitoland oil. Chara belongs to class- Chlorophyceae, in which reservefoodis found in form of starch and oil.</p> | |
| 2499. |
he diameter of the moon is approximately one fourth of the diameter of the earth.Find the ratio of their surface areas. |
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| 2500. |
9. How manyna10. How many seconds are there in 5 hours? |
| Answer» <p>I think answer is 18000 </p> <p>Your correct answer is 5*3600=18000</p> <p>18000 the correct answer of the given question</p> <p>Correct answer 30,00</p> <p>1min =60 sec60 min (1hour)=60×60 =3600sec5hour =3600×60 =18000thus there are 18000seconds in 5hour.</p> <p>There are 1800 seconds in 5 hours</p> <p>sorry, it's 18,000 seconds</p> | |