InterviewSolution
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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.
| 2651. |
who discovered cell |
| Answer» <p>Robert Hooke</p><p>The cell was first discovered byRobert Hookein 1665 using a microscope. </p> | |
| 2652. |
1. Who discovered first cell and when ? |
| Answer» <p>The cell was first discovered byRobert Hookein 1665.</p> | |
| 2653. |
3.What is the magnitude of the gravitational force between theearth and a 1 kg object on its surface? (Mass of the earth is6 x 10* kg and radius of the earth is 6.4 x 10 m.)g and radius of the earth is 6.4 x 10 |
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| 2654. |
Changes in GnRH pulse frequency in females is controlled by circulating leavels of |
| Answer» <p>High levels of estrogen and progesterone give negative feedback to the hypothalamus for the release of GnRH which inhibits Gonadotropin release</p> | |
| 2655. |
20. Which part of an atom was discovered by Rutherford's alpha particle scattering experiment ?21. What is the positive charge on the nucleus of an atom due to ? |
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| 2656. |
2.37 Calculate the current I,, I2 and I3 in the given electric circuit.2Ί12.2V10Ί |
| Answer» <p>Voltage = current x resistanceI1= v/r= 3/1ampi2= 2/2= 1ampi3= 2+1= 3 amp</p> | |
| 2657. |
who discovered atom |
| Answer» <p>Democritus was the person who discovered atom</p> <p>Democritus discovered atom</p> <p>JJ Thomson discovered the atom</p> <p>The atom was discovered by JJ. Thomson </p> <p>the atomb was discovered by j.j Thomson ok</p> <p>jj thommson discovered the atom</p> <p>The Atom is discovered by J.J THOMSON.</p> <p>atom was discovered by j.j thoms</p> | |
| 2658. |
who discovered bulb |
| Answer» <p>Tesla & Edison were not the first to invent the light bulb, in fact it was a Canadian by the name ofMatthew Evanscreated and patented the DC (Direct Current) light bulb five years before he sold his patent toThomas Edisonin 1979</p> | |
| 2659. |
D. Differentiate between1.flatworms and roundworms.2. arthropoda and mollusca. |
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| 2660. |
d. Proper checking of blood before blooddonation. |
| Answer» <p>Laboratory testing of blood prior to transfusion is intended to ensure that recipients receive the safest possible blood products.</p> | |
| 2661. |
On what factors does the resistance of a conductor depend? |
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| 2662. |
what are the emulisifiens ? write the names |
| Answer» <p>emulsification(in digestion) The breakdown of fat globules in the duodenum into tiny droplets, which provides a larger surface area on which the enzyme pancreatic lipase can act to digest the fats into fatty acids and glycerol.Emulsificationis assisted by the action of the bile salts (see bile). "emulsification."</p> <p>•Egg yolk – in which the main emulsifying agent is lecithin. ...•Mustard – where a variety of chemicals in the mucilage surrounding the seed hull act as emulsifiers.•Soy lecithin is another emulsifier and thickener.•Pickering stabilization – uses particles under certain circumstances.</p> | |
| 2663. |
1.Given below are names of some animals:(i) Goat(ii)(iii) Cockroach(iv)Human beingsEagle -Which of the above animals form a pair of omnivores?(a) (i) and (ii)(b) (ii) and (ii)(c) (iii) and (iv)(d) (ii) and (iv) |
| Answer» <p>Eagle and human beings are omnivoreshence option d</p> <p>Your anser is option (d) </p> <p>Human beings & Eagle Option (d) </p> <p>Pair of omnivores are human beings and eagle</p><p>Answer option d) ii) and iv) </p> <p>(a) goat and human beings ok</p> <p>human beings and eagles is right answer</p> | |
| 2664. |
1. Who discovered Penicillin? |
| Answer» <p>Alexander Fleming discovered penicillin</p> | |
| 2665. |
(a)Oviparous animals give birth to young ones. |
| Answer» <p>Some animals give birth to young ones while some animals lay eggs which later develop into young ones. Those animals which lay eggs are called oviparous animal</p> | |
| 2666. |
2 Why is variation beneficial to the species, but notPg 128necessary for the individual? |
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| 2667. |
Define Physical Development |
| Answer» <p>Physical development is the process that starts in human infancy and continues into late adolescent concentrating on gross and fine motor skills as well as puberty. Physical development involves developing control over the body, particularly muscles and physical coordination</p><p>The peak of physical development happens in childhood and is therefore a crucial time for neurological brain development and body coordination to encourage specific activities such as grasping, writing, crawling, and walking. As a child learns what their bodies can do, they gain self confidence, promoting social and emotional development.</p> <p>Physical developmentis the process that starts in human infancy and continues into late adolescent concentrating on gross and fine motor skills as well as puberty.Physical developmentinvolves developing control over the body, particularly muscles andphysicalcoordination</p> | |
| 2668. |
why embeyosac of flowring plant is called monosporic |
| Answer» <p>Because it develops from a single functional unit.</p> | |
| 2669. |
. 1. What is development? What are the two aspects of development? |
| Answer» <p>the process of becoming more stronger, powerful with the help something to overcome in the modern say to achieve success</p> <p>the two aspects of development is education and health</p> <p>increase in per capita income and living standard of citizens</p> | |
| 2670. |
DIARY2017नेशनल इन्श्योरेन्सNational InsuranceTrusted Since 1906 |
| Answer» <p>Get the best deal for 2017 Diaries from the largest online selection at eBay.com. ✅ Browse our daily deals for even...</p> <p>Get the best deal for 2017 Diaries from the largest online selection at eBay.com. ✅ Browse our daily deals for even...</p> <p>a shopkeeper buys 10 eggs for 8 and sells 8 eggs for 10 .find his profit or loss percent</p> | |
| 2671. |
(ii) the u(il1) the masses of both objellWhat is the importance of universal law of gravitation?ration of free fall?3&m/s7. |
| Answer» <p>The mostimportantpart about this is not only that objects pull on each other, but that two objects attract each other with a force that is proportional to the product of their masses and inversely proportional to the square of the distance between them. This is known as Newton'slawofuniversal gravitation.</p> | |
| 2672. |
What is compound microscope? |
| Answer» <p>Acompound microscopeis an instrument that is used to view magnified images of small objects on a glass slide. It can achieve higher levels of magnification than stereo or other low power microscopes and reduce chromatic aberration. It achieves this through the use of two or more lenses in the objective and the eyepiece.</p> | |
| 2673. |
15.Avehicle of mass 1000 kg moving with a velocity of20 m/s is brought to rest in 5 seconds after coveringa distance of 50 m.a. Find the accelerationb. Calculate the unbalanced force acting on thevehicle.c. The actual force applied by the brakes may beslightly less than that calculated in (b). Why? Givereason. |
| Answer» <p>Data: mass of the body = 1,000 kg Initial velocity (u) = 20 m/s Final velocity (v) = 0 m/s Displacement (S) = 50 m Force acting (F) =?Solution:</p><p>We know that F = ma and 2as=v2- u2 ⇒ 2 × a × 50 m = 02- 202</p><p>a= -4 m/s2now F = ma ⇒F = 1,000 × -4 = -4,0000N</p><p>Note: Negative symbol represents The opposit direction to the displacement.</p> <p>correct answer is -4, 0000Nplease like❤❤❤️👍</p> | |
| 2674. |
) The molar conductivity of cation and anion of salt BA are 180 and220 mhos cm2 mol-1 respectively. The molar conductivity of saltBA at infinite dilution is |
| Answer» <p>molar conductivity of salt = molar conductivity of cation + molar conductivity of anion</p><p>= 180 + 220</p><p>= 400 mhos cm² mol^-1</p><p>Like my answer if you find it useful!</p> | |
| 2675. |
a mixture of oxygen and ethyne is used for welding can you tell why a mixture of ethyne and air is not used? |
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| 2676. |
) a precious gem containing aluminiumoxide and chromium oxide |
| Answer» <p>Ruby is a precious gems containing aluminium oxide and chromium oxide.</p> | |
| 2677. |
When a bar magnet is broken; each of the broken part will have ……………. pole/poles |
| Answer» <p>it will have again N- S poleseach will behave as a bar magnet againits a property.thanks</p> <p> it will have again N-S poles</p> <p>Pole is the right answer </p> <p>poles is the correct answer of the given question</p> <p>pole is correct answer of following question </p> <p>pole is the correct answer </p> | |
| 2678. |
ias Radius of cu20 Cm Find the pastion of the imaan obiect plated at a distance o3 |
| Answer» <p>R = 20we know that R = 2fso f=R/2= 10cmu = -12cmso, by using mirror formula....1/f = 1/u + 1/v1/10=-1/12+1/v1/v = 1/10+1/121/v =11/60cmv = 60/11cm..........(A)here v represent position of the image from the mirroru represent position of the object from the mirror and f represent focal length.</p> | |
| 2679. |
2.8 An antifreeze solution is prepared from 222.6 g of ethylene glycol (C222o0 g of water. Calculate the molality of the solution. If the density of theolution is 1.072 g ml, then what shall be the molarity of the solution? |
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| 2680. |
5. What are villi? What is their location and function? |
| Answer» <p>Villi are small finger-like projections located in the wall of the small intestine. Their function is to increase the surface area in order to maximise the absorption of digested food.</p> | |
| 2681. |
.. What are villi? What is their location and function? |
| Answer» <p>Villiare tiny finger-like projections originating fromthewalls ofthesmall intestine. They increasethesurface area for absorption ofthedigested food.Theblood vessels present insidethe villican absorbthenutrients fromthedigested food</p> <p>Villiare tiny finger-like projections originating fromthewalls ofthesmall intestine. They increasethesurface area for absorption ofthedigested food.Theblood vessels present insidethe villican absorbthenutrients fromthedigested food</p> | |
| 2682. |
What are villi? What is their location and function? |
| Answer» <p>Villiare tiny finger-like projections originating fromthewalls ofthesmall intestine. They increasethesurface area for absorption ofthedigested food.Theblood vessels present insidethe villican absorbthenutrients fromthedigested food</p> | |
| 2683. |
What are villi? What is their location andfunction? |
| Answer» | |
| 2684. |
What are villi? What is their location and function? |
| Answer» <p>Villi are tiny finger-like projections originating from the walls of the small intestine. Theyincrease the surface area for absorption of the digested food. The blood vessels presentinside the villi can absorb the nutrients from the digested food.</p> | |
| 2685. |
what are villi ? What is their location and function ? |
| Answer» | |
| 2686. |
4. Clay is a 'plastic material. Does this imply that it is a polymernt to wear ny-1 |
| Answer» <p>can you give in breaf</p> | |
| 2687. |
i. Villi are present ina. stomachc. small intestineThe human eye forms image of object callD. pancreasd. oesopheigus |
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| 2688. |
produceinstruments.(a) DholakWhat is thesometimes?List sources of noise pollution in your Surroundingssound in theb) Sitar(c) Flutedifference between noise and music? Canmusic b |
| Answer» <p>stretched membrane string air coloumn</p> <p>the sound which is present for us is termed as music and the song which is in please unpleasant for our ears is termed as noise music can become noise when it crosses the bearable range for human ears</p> <p>honking horns of vehicles, kitchen appliances, Crusher, machines, loud noise of machines from factories </p> | |
| 2689. |
Industrial noise can be reduced by proper |
| Answer» <p>We can use proper lubrication as well as better maintenance of machines to reduce noise pollution and improve efficiency.</p> | |
| 2690. |
late the freguchey anl wave number of a light wave whone period is 2d)5.0 |
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| 2691. |
Gabriel phthalimide synthesis is preferred for synthesising primary amines. |
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| 2692. |
a) Why is mercury preferred as a thermometric liquid |
| Answer» <p>Mercuryis the only one inliquidstate at room temperature. It's used in thermometers because it has high coefficient of expansion. Hence, the slightest change in temperature is notable when it's used in a thermometer.</p> | |
| 2693. |
g. Motion repeated after a fixed interval of time is called |
| Answer» <p>Anymotionthatrepeatsitself at regularintervals of time is calledperiodicmotion.</p> <p>when a body starts from rest it's initial velocity is</p> | |
| 2694. |
Explain in brief the types of animals on the basis of food they eat. |
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| 2695. |
what do you mean by insectivorous plant? why does a plant eat insects? explain with an example? |
| Answer» <p>A plant which fulfills its nitrogenous needs by eating insects is called an insectivorous plant.</p><p>Cause of eating of insects by plants:The soil of marshy land is deficient in nitrogen. Plants living in marshy areas do not get nitrogen from the soil. Their nitrogen need is fulfilled by sucking the juice of insects.</p><p>Example of insectivores plant arePitcher plant, Venus Fly trap, Bladderwort, Drosera etc</p> | |
| 2696. |
on the leaves Call1. Oxyg2. Dese3. The4. Yer5. Ni(a) climbersA. VerA. Tick the correct option.1. Carbon dioxide (air) enters the plant through small openings onO (b) lenticel(a) chloroplasto (d) chlorophyll(c) stomata2. The plant on which a parasite depends for food is called(d)o0(e) haustorium(a) host(b) guest3 Cuscut is an example of(b) heterotroph(a) autotroph(d) saprotroph(c) parasitePlants that feed on insects grow in(b) nitrogen-deficient soil(a) nitrogen-rich soil(d) humus-rich soil(c) humus-deficient soil5. Which of the following is not necessary for photosynthesis?(b) water(a) carbon dioxide(d) sunlight(c) oxygen |
| Answer» <p>right all work which you written </p> <p>1. c2.a5.c these are some of the answers</p> <p>1. C2. A5. c is the correct answer </p> | |
| 2697. |
he plant which eats by trapping insects is _________ |
| Answer» <p>Pitcher plant</p> | |
| 2698. |
Why platyhelmenthes and nematodes possess a false column? |
| Answer» <p>Roundworms (Platyhelminthes) havea tough covering of cuticle on the surface of their body. As a result,roundworms havea hydrostatic skeleton. This provides a counterforce for the contraction of muscles lining the pseudocoelom.</p><p>Nematodes do not have completely developed mesodermal linning cavities called coelom. they have cavities that are not formed completely by mesoderm. thus they are not true coelom and are known as pseudocoelom.</p> | |
| 2699. |
2. Why do plants and animals possess differentypes of tissues ? |
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| 2700. |
2. Why do plants and animals possess differenttypes of tissues ? |
| Answer» | |