Explore topic-wise InterviewSolutions in Science.

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51.

42. A train 1s running at a speed 01 00 N11/43..eeThe speed of a racing car is 60 m/s. What will this speed be in km/h ?

Answer» <p>1 km/hr= 5/18 m/s 60 m/s =60×18/5 = 12×18 = 216 km/hr. </p>
52.

A. Tick () the correct answer:Which of the following is an insectivorous plant?(a) Pitcher plant (b) Sunflower plant (c) Gram plant1.(d)Rose plant13

Answer» <p>a. Pitcher plant is an insectivorous plant</p> <p>A..Pitcher plant is one of the example of insectivorous plant.</p> <p>a part is your answer</p>
53.

ick () the correct answer :). Which of the following is an insectivorous plant ?(a) Pitcher plant (b) Sunflower plant (c) Gram plant

Answer» <p>pitcher plant is the insectivorous plant</p>
54.

{ \ -8.When does a drought occur?

Answer» <p>Drought occur when there is no rain or not enough rain, causing the land to dry up and making it infertile. A drought is a period of drier than normal conditions that results in water scarcity or any other water related problem. Precipitation( rain or snow) occurs in uneven parts of the region or country.</p> <p>drought...</p>
55.

When does a drought occur?

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56.

Differentiate between a flood and a drought.

Answer» <p>thanks </p>
57.

(ii) Till when does a patient need to be given glucose?

Answer» <p>sorry mate but I don't know </p> <p>give glucose only till patient is suffering from significant hypoglycemia</p> <p>hypoglycemia is the correct answer of the given question </p> <p>Hypoglycemia is the correct answer.</p> <p>hypoglycemia is the right answered g</p> <p>when he is to week to digest carbohydrates. </p>
58.

List the part of human urinary system and write the function of each part.

Answer» <p>Two ureters.These narrow tubescarry urine from the kidneys to the bladder. Muscles in the ureter walls continually tighten and relax forcing urine downward, away from the kidneys. If urine backs up, or is allowed to stand still, a kidney infection can develop. About every 10 to 15 seconds, small amounts of urine are emptied into the bladder from the ureters.</p><p>Bladder.This triangle-shaped, hollow organ is located in the lower abdomen. It is held in place by ligaments that are attached to other organs and the pelvic bones. The bladder's walls relax and expand to store urine, and contract and flatten to empty urine through the urethra. The typical healthy adult bladder can store up to two cups of urine for two to five hours.</p><p>Two sphincter muscles.These circular muscleshelp keep urine from leaking by closing tightly like a rubber band around the opening of the bladder.</p><p>Nerves in the bladder.The nerves alert a person when it is time to urinate, or empty the bladder.</p><p>Urethra.This tube allows urine to pass outside the body. The brain signals the bladder muscles to tighten, which squeezes urine out of the bladder. At the same time, the brain signals the sphincter muscles to relax to let urine exit the bladder through the urethra. When all the signals occur in the correct order, normal urination occurs.</p>
59.

8. Draw a labelled diagram of the urinarysystem.

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60.

What is meant by the disorder of urinary system? Give two examples of such disorder found in human beings.

Answer» <p>Theurinary system, also known as therenal system, produces, stores and eliminatesurine, the fluid waste excreted by the kidneys. The kidneys makeurineby filtering wastes and extra water from blood. Theurinary system is susceptible to a variety of infections and otherproblems, including blockages and injuries.Eg. urinary tract infection, pyelonephritis, kidney stone, interstitial cystitis etc. </p>
61.

Highest compression occurs

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62.

Which of these are air sacs in the lungs?i. bronchiii. tracheaii. alveoli

Answer» <p>The smallest branches are called bronchioles and at the end of these are your air sacs (alveoli)</p>
63.

Single unit smooth muscle is found in(a) Urinary bladder(c) Large blood vessels(b) Iris(d) Dermis of skin

Answer» <p>Single-unit smooth muscle, or visceralsmooth muscleis a type ofsmooth muscle foundin the uterus, gastro-intestinaltract, and the bladder. </p><p>option A</p>
64.

Read the parts of our respiratory system and use the same to label the given diagram(NostrilPharynxEpiglottisTracheaBronchusBronchiolesLungsDiaphragm

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65.

The figure shows a diagrammatic view ofhuman respiratory system with labels P Q Rand T Select the option which is an incorrectmatch(1) P-Trachea(2) Q - Pleural membrane13) R - Primary Bronchi(4) T-Diaphragm

Answer» <p>(3). R-primary bronchi </p> <p>3) R - Primary bronchi</p> <p>3) is the right answer </p> <p>option 3 is the right answer</p> <p>3 is correct answer r- primary bronchi</p> <p>option 3 is correct answer.</p> <p>3 is the best answer</p>
66.

) Why is it advisable not to shut all the doors and windows during a storm?

Answer» <p>It is not advisable to shut all the doors and windows during the storm because during a storm the pressure outside the house is very low or low pressure is created outside the house so inside the room the pressure is high so if all the doors and windows are shut then the air cannot go out and it will force up to break the doors and windows</p>
67.

7 %2B \frac p 5 = 6

Answer» <p>p/5=6-7p/5=-1p=-5</p>
68.

Séction1. State Maxwell's right hand thumb rule.

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69.

2. A train starts its journey from stationP: accelerates at the rate of 2 m/s?, andreaches its maximum speed in 10 s. Itmaintains this speed for 30 min and retardsuniformly to rest at the station Q after the next20 s. Calculate:(a) The maximum speed of the trair.(b) Retardation(c) The distance between stations Pand Q

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70.

3. Can you think of creating a shape that would give a circular shadow if held in, one way and a rectangular shadow if held in anรณther way?

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71.

cellophane, a wire mesh, kerosene stuttCan you think of creating a shape that would give a circular shadow if held inone way and a rectangular shadow if held in another way?3.

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72.

A concave mirror of focal length 'fproduces a real image n times the sizeof the object. The distance of the objectfrom the mirror is(a) (n-1) f(c) (n+ 1) f/n (d) (n-1) f/rn

Answer» <p>Option (a)</p><p>Explanation:Focal Length = fMagnification = 1/n</p><p>Now let object was placed at a distance. u = xNow, we know that m = |v/u| =&gt; v = x/n</p><p>Applying Mirror Formula1/u + 1/v = 1/fPlug the values of u,v and f</p><p>-1/x + n/x = 1/fn-1/x = 1/fx = ( n-1 )f</p>
73.

a train travels at a speed of 180 km/h. how far will travel in 4 hours

Answer» <p>DISTANCE=SPEED*TIME=180*4=720KM</p> <p>720 km in 4 hour because its speed is 180 km/h</p> <p>Distance = Speed X Time = 180 X 4 = 720 km</p> <p>A train travels 720kms in 4 hours</p> <p>1 hr= 180km4hr= 180x4= 720 km/h</p> <p>in one hours it goes 180 then how much will go in four=x1/180*4=45km. Therefore in 4hrs it will go 45kms</p> <p>180km train travel 1hour =60minute 4hour =60*4=280</p> <p>the train will travel 180km/hr*4hr =720km </p> <p>Speed=180 km/h.Distance travelled in 4 hours=180*4=720 Km</p> <p>720km/h. is a right answer</p> <p>Our Formula is = Distance = Speed * Time= 180 * 4= 720 Km</p>
74.

8. A wooden cube of sides 10 cm each dipped in water. upthrust of water would be20Nb) 12 Nc) 10 Nd) 15 N

Answer» <p>Upthrust = Weight of water displaced= mass of water * g= (density*Volume) of water * g= 1000 *(1/1000)* 9.8= 9.8 NHere I have used Kg/m^3 for density and m^3 for volume.</p>
75.

9.The core of a transformer is laminated so that-(1) ratio of voltage in the primary and secondary maybe increased(2) energy losses due to eddy currents may beminimised(3) weight of transformer may be reduced(4) rusting may be prevented

Answer» <p>Thecoreislaminatedto reduce these to a minimum as they interfere with the efficient transfer of energy from the primary coil to the secondary one. </p><p>The eddy currents cause energy to be lost from thetransformeras they heat up thecore- meaning that electrical energy is being wasted as unwanted heat energy.</p><p>The answer is energy losses due to eddy currents may be minimised.</p>
76.

Which food item will you provide to a pneighbourhood?oor, anaemic child present in your

Answer» <p>Leafy greens. Leafy greens, especially dark ones, are among the best sources of nonheme iron. </p><p>Meatandpoultry. Allmeatandpoultrycontain heme iron. </p><p>Liver. </p><p>Seafood. </p><p>Fortified foods. </p><p>Beans. </p><p>Nuts and seeds.</p>
77.

Animal A is a Herbivore, and gives a food item very rich in calcium. Animal B is also a Herbivore butgives a protein-rich food. Identify A andB

Answer» <p>animal A is cow as it gives milk, ghee and other stuff rich in calcium.animal B is hen or goat as it is herbivore and it's meat is rich in protein.</p>
78.

Q3. Name the following:1. Process of removal of weeds:2. Food item stored by pasteurization:3. Antibiotic obtained from fungi:4. Substance used to preserve jams and jellies:5. Disease spread by female anopheles:

Answer» <p>1.weeding2.milk3. penicillin 4.pectin5.malaria</p> <p>1. weeding 2. milk3. pencils4. pectin 5. malaria</p><p>is the correct answer </p> <p>weedingmilkpenicillinpectin. malaria</p> <p>weedingmilkpencillinpectinmalariais the right answer</p>
79.

Salver?2. Why are bells made of metals and not from wood?3 Simon

Answer» <p>its because metal is the type of substance which is more suitable than wood for making bells as it makes a perfect ringing sound .</p> <p>most of the bells are made from metals and not from wood because metals produce a ringing sound, while wood does not make a ringing sound</p> <p>Bells are made of metal because metals give more sound than wood</p> <p>bells are made of mental not of wood because wood has no sound</p> <p>because metals have the property of sonority .</p> <p>bcoz metal are sonorous in nature .it produced a sound when hammered .thats why bell are made of metal not by wood</p> <p>Because metal have property of producing sound </p> <p>Bell are made from metal because metal has capacity of sonorous but non metal has not capacity of soronous. This cause bell made from metal.</p> <p>it is so because metals are sonorous that is they producesound when they are struck with something</p> <p>Bells are made of metals because most of the metals are sonorous(this means when that metals m</p> <p>it's metal type of substance which is suitable than wood for making ringing sound</p> <p>Bells are made from metals because metals have a property of producing a ringing sound when struck hard and thus they are sonorous.As wood is a non metal , they are not sonorous and thus they are not used to make bells.</p> <p>Bells are made of metal because metals give more sound than wood</p> <p>Most of the metals are sonorous in nature; i.e., they produce ringingÂsound when hammered. This property of metals makes it suitable to be used in the manufacturing of bells. On the other hand, wood is not sonorous and cannot produce ringing sound when hammered. Therefore, wood it is not used in manufacturing of bells.</p> <p>Most of the metals are sonorous in nature; i.e., they produce ringingÂsound when hammered. This property of metals makes it suitable to be used in the manufacturing of bells. On the other hand, wood is not sonorous and cannot produce ringing sound when hammered. Therefore, wood it is not used in manufacturing of bells.</p> <p>because metals are sonorous .This means that they produce sounds when they are beaten . ex. iron</p> <p>because metels are sonorus and wood aren't. </p> <p>Metals are sonorous which means they produce a ringing sound when struck hard. Wood is not sonorous. That is why metals are used for making bells.</p> <p>because mental are sonorous. </p> <p>Bells are made up of metals because metals produce ringing sound when they are struck to hard surface whereas wood does not produce ringing sound . This property of metals is called sonorousness</p> <p>because metal have a property called sonorous in which metal produce ringing sound when beaten</p> <p>a metal get sound, wood not get sound</p> <p>The bells are made from metals but not from wood because the metals have a being quality of the sonorous </p> <p>because they have property of sonority that mean they have property to ring sounds when it stuck with a hard object</p> <p>Bellsarenot madeofwoodbut ofmetalsbecause when they are banged they create good sound beacuse of their property of being sonorous.Non-metalsdonotposses this ability.</p> <p>The materials which produce sound when hit by a hard substance are called sonorous materials. Generally, metals are sonorous materials.We ring the bell to produce a ringing sound. So, bells are made of metals. </p><p>If bells are made of wood, it doesn't produce any ringing sound like a metal. Hence it is a non sonorous material. </p> <p>on being hit,metals produce a typical sound.jence,they made of metals</p> <p>because metal have property of sonorous which provides ringing sounds</p> <p>Metals have more and greater sound then the non metals like wood</p> <p>Because metals are sonorus and wood is not. </p> <p>because metals strike hard and a noise is made</p> <p>The bells are made of metals because the property of sonority . This is the property of a metal to make sound on hitting. The Brainliest Answer! That's because metals are sonorous and wood is not</p> <p>good answer ha questions ka</p> <p>The bells are made from metals because they are sonorous that is they produce a very loud sound with high frequency.</p> <p>because metal is best for bell because it make perfect sound of bell</p>
80.

6.A rectangular field is 72 m by 58 m. Amar walksround it at the rate of 3 km per hour. What timewill he take in taking 2 rounds.

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81.

s pere. How far is his school from his house 7na race Celia ran 300 m in 40 seconds. Find her speed in km/hourt inrint 70 km rer hour takes 2 hours and 30 ninutes

Answer» <p>Distance=300 mTime=40 seconds:. Speed=Distance/Time=300m/4s=75 m/s=75×5/18 km/hr=20.8333.. km/hr</p>
82.

0.56A simple penculum takes 30 seconds to complete 90scillations. So, the time period of the pendulumis(A) 0.45 seconds. (B10.23 seconds. (C) 0.78 seconds (Dil seconds

Answer» <p>4 second is correct answer</p> <p>4 second is the correct answer for this question Thank you </p> <p>4 second is the right answer plz like</p> <p>4 second is the correct answer for this question</p> <p>time period of the pendulum is 4 second</p> <p>4second is correct of your</p> <p>4 second is write answer</p> <p>4 second is correct answer</p>
83.

0.56A mple pendulum takes 10 seconds to complete 90 cillation. So, the time period of the pendulum is(A) 0.45 seconds (B10.13 seconds. (C0,78 seconds. Disconds

Answer» <p>it will take 0.333 sec</p> <p>Number of oscillations made by the simple pendulum = 12Time taken by the pendulum to make 12 oscillations = 48 s</p><p>Time period of the simple pendulum is the time taken by the pendulum to make one oscillation.Time period of the pendulum =4812=4s4812=4s</p><p>Therefore, time period of the pendulum is 4 seconds.</p> <p>no.of oscillation=90time taken=30time period= 90÷30= 30</p> <p>0.33 is the correct answer </p>
84.

9.What are the factors upon which the amount of heat produced in a wire depends upon?(i) Material(ii) Length(ii) Thickness(a) i and ii(c) i and ii(b)i, ii and iii(d) ii and ii

Answer» <p>There are some major factor on which heat produced in current carrying conductor depends upon. Some of the major ones are:</p><p>Resistance of the conductor: Heat produced in conductor is product of square of the current and resistance ie (P=I*I*R). So, higher the resistance of the conducting wire, more is the loss in it.</p><p>Current in the conductor: Heat produced is proportional to square of the current flowing in the conductor as governed by the equation in (1).</p><p>Amount of time current flows: Also, the heat produced is dependent upon the amount of time current flows in the conductor.</p> <p>actually answer Kya h</p> <p>actual ans batlana bhi</p>
85.

25. It takes 20 s for A to climb up a stair while B does the same in 15 s. Compare the work done and powerdeveloped by A and B.

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86.

CaleulaetheUpeover this distance.08:30 AM. What is the distance moved by the car, if at 08:50odometer reading has changed to 57336.0 km? Calculate the sthe car in km/min during this time.5. The odometer of a car reads 57321.0 km when the clock shows tspeed ofExpress the speed in km/h also.

Answer» <p>Distance traveled at 8:30 a.m -- 57321 kmFinal distance traveled at 8:50 a.m -- 57336 kmDistance traveled between 8:30 and 8:50 am -- 57336-57321=15 kmTime taken -- 20 mins( since 8:30 to 8:50 is 20 minutes)</p><p>So,speed of car in km per minute = 15/20 km per min.= 0.75 km per min.in km per hour= 15/20 X 60 = 45 kmph.</p><p>So the speed of car is 45kmph or 0.75 km per min if it covers 15km in 20 minutes.</p>
87.

5.(a) The IUPAC name of CH,COOH is(i) acetic acid(iii) ethanol(ii) ethanoic acid(iv) ethyne

Answer» <p>Answer is a) acetic acid</p> <p>thanks bro</p> <p>Answer is acetic acid </p>
88.

What happens to the force between two o() the mass of one obj(ui) the distance between the objects is doubled andss of one object is doubled?(itl) the masses of both objects are doubled?he importance of universal law of gravitationertance of universal faw

Answer» <p>According to law of gravitation, the force between two objects (m1and m2) is proportional to their masses and inversely proportional to the square of the distance(R) between them.</p><p>F = G X m1X m2/ R2 (G = gravitational constant)</p><p>(i) If the mass of one object is doubled</p><p>Then, F = G X 2m1X m2/ R2</p><p> F = 2F , hence force will be doubled.</p><p>(ii) If the distance between the objects is doubled and tripled</p><p>then, F = G X m1X m2/ (2R)2</p><p> F = 4F, hence force become one-fourth of its initial force.</p><p>and F = G X m1X m2/ (3R)2</p><p> F = 9F, hence force become one-ninth of its initial force.</p><p>(iii) If the masses of both objects are doubled</p><p>Then, F = G X 2m1 X 2m2/ R2</p><p> F = 4F , hence force will be fur time more than it actual value.</p>
89.

(A) gkA small block of mass of 0. 1 kg lies on a fixed inclined plane PO which makes an angiehorizonati. A horizontal force of 1 Nacts on the block through its centre of mass as shown in teure, the block through its centre of mass as shown in the figure the block remains(take g-10m/s')(2012 ADVA

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90.

the following questions.ere does the sun rise and set?Wh2. Why do the stars look small to us?3.Write the three shapes of the moon

Answer» <p>1)Sun rises either north or south of "dueeast" and sets north or south of "due west</p><p>2)Stars are hot glowing luminous objects which we can see in the night sky.Sun is also called a star.Stars twinkle &amp; appear too far from the Earth because they are situated too far away from our Solar System.</p>
91.

3 cm(dFind the missing values:S.No.Base Height Area of the Parallelo246 cm2154.5 cm248.72 cm216.38 cm?a.20 cmb.15 cm8.4 cmC.d.15.6 cm

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92.

. The hour and minute hands of a clock are 4.2 cm and 7 cm long respectively. Find the sum of the distcovered by their tips in 1 day

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93.

Sheena takes 15 minutes to go to market on bicycle. The market is 3Km from her house. Calculatespeed of her cycling.

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94.

an object expands on heating, write one use of it.

Answer» <p>Almost all the substances, Solid, liquid and gases, expand on heating. Gases expand more and solid expands less depend on their molecular arrangement. Any metal, water. oil, any gas(hydrogen, air, CO2) are examples of substances expand on heating.</p>
95.

A small body of mass m hangs at one end of a string of length a, the other end of which is fixed. It isgiven a horizontal velocity u at its lowest position so that the string would just becomes slack, when itmakes an angle of 60 with the upward drawn vertical line. Find the tension in the string at point ofprojection.[EAMCET 1994]

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96.

Hence volitto2.7 CHARLES' LAWtions made durin

Answer» <p>Charles's law is an experimental gas law that describes how gases tend to expand when heated. A modern statement of Charles's law is: When the pressure on a sample of a dry gas is held constant, the Kelvin temperature and the volume will be in direct proportion.</p> <p>explanation bhi chaiyea</p>
97.

7. Aperson hasalearing range from 20 ㎐tto 20 kHz. wthe typical wavelengihs of scumd waves ito these two frequxencies344 m s? Take the speed of sound n

Answer» <p>you know that </p><p>v=f*lambda in case of 20Khz</p><p>v/f=lambda 344/20000=wavelength in case of 20KHz</p><p>344/20= wavelength for 20Hz .0172m= wavelenght in case of 20Khz</p><p>17.2m=wavelength in 20Hz</p>
98.

10 cm. Draw theldimage formed.A concave lens of focal length 15 cm forms an image 10 cm from thelelens. How far11.is the object placed from the lens? Draw the ray diagrami ot 1 distance of 10 cm from a convex mirror of focal lengh

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99.

and labeied didlectrolytic retining ot CopperConcave and Convex Mirror.28. Write the differences between

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100.

d)e)A real image cannot be obtained on a screen. (T/F)A concave mirror always form a real image. (T/F)

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