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.
| 1251. |
OSve reasons for1 Astronauts onU Tiersons for the following statementsats on moon use sign language to communicatemale voice is shriller in general than a male voice.distance of a wall from a source of sound so that an echo is produced is 17 mhas maximum speed in solids and least speed in gases2. The female voice3. The minimum distaSound has maximum |
| Answer» <p>1- because there is no air on the moon. 2- because women sound has more frequency than men. </p> <p>1-because there is no air on the moon. 2-because woman sound has more frequency than men</p> | |
| 1252. |
2. A block is projected along a rough horizontal road witha speed of 10 m/s. If the coefficient of kinetic friction is0-10, how far will it travel before coming to rest? |
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| 1253. |
F1.Whentheroadisdryandcoefficient of friction is u, the maximum speed of a car in a circular path is10 ms1. If the road becomes wet and coefficient of friction become , what is the maximum speed2permitted?MNR 1985] |
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| 1254. |
What is paragraph alignment? Give examples |
| Answer» <p>In Word 2007,paragraph alignmentrefers to how the left and right edges of aparagraph alignon a page. You can left-align, center, right-align, and justify aparagraph. Theparagraphformatting commands are located in theParagraphgroup on the Home tab of the Ribbon.</p> | |
| 1255. |
what is pace maker |
| Answer» <p>A pacemaker is a small device that's placed in the chest or abdomen to help control abnormal heart rhythms. This device uses electrical pulses to prompt the heart to beat at a normal rate.</p> | |
| 1256. |
How do you increase the pressure by keeping (a) area unchanged and (b) forceunchanged? (AS,) |
| Answer» <p>pressure = force / areaSo pressure is directly proportional to force and inversely proportional to area.You can increase the pressure by changing either force or area or both.</p><p>a)If you want to increase pressure while keeping area unchanged,you have to change force.Since pressure is directly proportional to force, increase the force.</p><p>b)If you want to increase pressure while keeping force unchanged,you have to change area.Since pressure is inversely proportional to area,decreasethe area</p> | |
| 1257. |
1. Why does ,a, desert cooler coobetter on a hot dry day? |
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| 1258. |
nswer the following questions in short:How does sweating help us to keep our body cool? |
| Answer» <p>Sosweat helpscool you down two ways. First, it makes your skin feel cooler when it's wet. And when it evaporates it removes some heat. ... As moresweatevaporates from yourbody, the air close to you becomes more humid, making it harder for yoursweatto evaporate.</p> | |
| 1259. |
6. Give reasons.(a) Diseases spread on a large scaleduring periods of heavy rainfalland floods |
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| 1260. |
Which of the following does not represent an internal hardware ?(a) Speaker which beeps(c) Joystick(b) Plotter(d) CPU |
| Answer» <p>plotterit is a printer</p> <p>plotter or joystick</p> <p>or both</p> | |
| 1261. |
e3① Slow③ net |
| Answer» <p>If you don't do anything to compensate, a high temperature is likely to make a pendulum clock go slow, because the pendulum will expand, and the duration of each tick goes as the square root of the length.</p> <p>but i think.... slow</p> | |
| 1262. |
example of slow changes |
| Answer» <p>SLOW CHANGES:</p><p>Changes that take place in hours,days,years etc are slow changes EXAMPLE:</p><p>1)GERMINATION OF SEEDS</p><p>2)GROWTH OF A CHILD</p><p>3)CURDLING OF MILK</p><p>4)RIPENING OF FRUITS etc.</p> | |
| 1263. |
Water required to produce 1 kg of rice.a) 50 litresb) 500 litreswater required to produce 1 kg of rice.35 litresc) 5 litresd) 5000 litresa) 500 litre |
| Answer» <p>To produce 1 kg of rice 500 liters of water is required .</p> | |
| 1264. |
Mention some physical properties of metals. |
| Answer» <p>Physical properties of metals</p><p>Shiny (lustrous)</p><p>Good conductors of electricity and heat.</p><p>High density.</p><p>High melting point.</p><p>Malleable.</p><p>Ductile and so can be drawn into wires.</p><p>Solid at room temperature except for mercury.</p><p>Opaque objects.</p> <p>Metal is lustrous Brittle </p> | |
| 1265. |
ale ee we are not able to7.Explain how skin works as a sense organ. |
| Answer» <p>Skin is the largest organ of the human body which protects human body but it also acts as sense organ. Skin has receptors which detect touch, pain, cold and heat separately. Skin has wide network of nerve cells which detect and forward to spinal cord and brain to any change in the environment</p> <p>Theskin acts as a sense organbecause the epidermis, dermis, and the hypodermis contain specializedsensorynerve structures that detect touch, surface temperature, and pain. ... This rich innervation helps ussenseour environment and react accordingly.</p> | |
| 1266. |
difference between homologous organ and analogous organ |
| Answer» <p>it is not clear</p> | |
| 1267. |
Q.19. What is an organ pipe?Ans: Organ pipe: |
| Answer» <p>An organ pipe is a sound-producing element of the pipe organ that resonates at a specific pitch when pressurized air (commonly referred to as wind) is driven through it. Each pipe is tuned to a specific note of the musical scale.</p><p>Like my answer if you find it useful!</p> | |
| 1268. |
Lateral displacement takes place due toA refraction in a2.b) prismd) mirrorconcave lensc) glass slab |
| Answer» <p>lateral displacement takes place due to refraction in a glass slab.</p> <p>option (c) is correct.</p> | |
| 1269. |
2. A piece of twig takes a longer time to catch hre than l piee ol pl3. Goldsmiths blow the flame on gold or silver blocks from a distance, with a blow pipe. Why?t Gr He went |
| Answer» <p>A goldsmith blows air into the kerosene lamp flame with a blow pipe so that complete combustion of fuel takes place and the temperature of the flame increases. The goldsmith requires a hotter flame to make jewellery. Otherwise the goldsmith blows the outermost, hotter zone of the flame on the jewellery.</p> <p>thnq </p> | |
| 1270. |
lculate:the number of carbon atoms in 1.5 moles of C2Hs216 |
| Answer» <p>1 mole of C2H6 has 2 moles of C atoms and 6 moles of H atoms.</p><p>In 1.5 moles of C2H6 there are1.5 * 2 moles of C atoms=3 moles of C atom</p> <p>thanks</p> | |
| 1271. |
o Differentiate between saturated and unsaturated hydrocarbons. |
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| 1272. |
sil h the blanks:as they can be beaten into thin sheetscaratof heat and electricity,1. Metals are2. Most of the metals react with oxygen and form3. Pure gold iso4. Metals on reaction with acids producegas,5. Metals are |
| Answer» <p>1) malleable2)metal oxids3)245)good conductor4)hydrogen</p> | |
| 1273. |
Two liquids, A and B, form an ideal solution. At the specified temperature, the vapour pressure of pureA is 200 mm Hg while that of pure B is 75 mm Hg if the vapour over the mixture consists of 50 molpercent A, what is the mole percent A in the liquid?F-2.a |
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| 1274. |
what is hydrocarbon |
| Answer» <p>In organic chemistry, ahydrocarbonis an organic compound consisting entirely of hydrogen and carbon.</p> <p>In organic chemistry, a hydrocarbon is an organic compound consisting entirely of hydrogen and carbon. is the right answer</p> <p>hydrocarbon is the compound which is consist of hydrogen and carbon</p> | |
| 1275. |
what is respiratory system |
| Answer» <p>The respiratory system is a biological system consisting of specific organs and structures used for gas exchange in animals and plants.</p> | |
| 1276. |
1 What type of bond is present in F2 molecule? |
| Answer» <p>As fluorine has 9 electronsits valency is 1 to attain sability it makes one bond so the answer is single bond.</p> | |
| 1277. |
2. Explain the working of a simple dry cell. |
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| 1278. |
6. Give two points of differences : [2 marks]Reversible changeIrreversible change(1)(1)(2)(2) |
| Answer» <p>REVERSIBLE. </p><p>IRJ</p> | |
| 1279. |
ongl pt2 a) What are valence electrons ? Where are valence electrons situated in an atom ? |
| Answer» <p>In chemistry, a valence electron is an outer shell electron that is associated with an atom, and that can participate in the formation of a chemical bond if the outer shell is not closed; in a single covalent bond, both atoms in the bond contribute one valence electron in order to form a shared pair.</p><p>They are situated at the outermost shell.</p> | |
| 1280. |
Objects through which lightare called opaque objects1. |
| Answer» <p>Objects through which light cannot be transmitted are called opaque objects.</p> | |
| 1281. |
tate formation of shadow when extended source of light is bigger than the opaquebody |
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| 1282. |
Exercisebelow to make a sentence that helps us understandRearrangects.opaque objectsSHAD |
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| 1283. |
onmeBad) newton11. Up thrust of water acting on a wooden cube of sides 10cm immersed completely in water isa) 5 Nb) 10 Nc) 3 Nd) 2 N |
| Answer» <p>Upthrust = Weight of water displaced= mass of water * g= (density*Volume) of water * g= 1000 *(1/1000)* 9.8= 9.8 N= 10N</p> | |
| 1284. |
Classify the objects or materials given below as opaque, transparewranslucent and luminous or non-luminous:water, a piece of rock, a sheet of aluminium, a mirror, a wooden boardeet of polythene, a CD, smoke, a sheet of plane glass, fog, a piece of redan umbrella, a lighted fluorescent tube, a wall, a sheet of carbon par |
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| 1285. |
Define matter. What is it composed of? |
| Answer» <p>Adefinitionof "matter" more fine-scale than the atoms and moleculesdefinitionis:matter ismade upof what atoms and molecules are made of,meaninganything made of positively charged protons, neutral neutrons, and negatively charged electrons.</p> | |
| 1286. |
2. Classify the objects or materials given below as opaque. transparent orslucent and luminous or non-luminous:Air, water. a piece of rock, a sheet of aluminium, a mirror. asheet of polythene, a CD, smoke, a sheet of plane glass, fog, a piece of red hotiron, an umbrella. a lighted fluorescent tube. a wall, a sheet of carbon papet,the flame of a gas burner., a sheet of cardboard, a lighted torch, a sheet ofcellophane, a wire mesh, kerosene stove sun fireily, moon.Can 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?In a completely dark room, if you hold up a mirror in front of you, will you see areflection of yourself in the mirror?4. |
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| 1287. |
Classify the objects or materials given below as opaque. transparent ortranslucent and luminous or non-luminous:water, a piece of rock, a sheet of aluminium, a mirror, a wooden board, asheet of polythene, a.CD, smoke, a sheet of plane glass, fog, a piece of red hottron, an umbrella, a lighted fluorescent tube, a wall, a sheet of carbon paper.the flame of a gas burner, a sheet of cardboard, a lighted torch, a sheet ofcellophane, a wire mesh, kerosene stove, sun, firefly, moon.Can you think of creating a shape that would give a circular shadow if held inone way and a rectangular shadow if held in anotherway?In a completely dark room, if you hold up a mirror in front of you, will you see areflection of yourself in the mirror? |
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| 1288. |
ects or materials given below as opaque, transparent ortranslucent and luminous or nonluminous:ium, a mirror, a wooden board, aAir, water, a piece of rock, a sheet of aluminisheet of polythene, a cD, smoke, a sheet of plane glass. fog, a piece of red hotIron, an umbrella, a lighted fluorescent tube, a wall. a sheet of carbon paperthe flame of a gas burner, a sheet of cardboard, a lighted torch, a sheet ofcellophane, a wire mesh, kerosene stove, sun, Brefly, moon.Can 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?In a completely dark room, if you hold up a mirror in front of you, will you see areflection of yourself in the mirror? |
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| 1289. |
transparet oClassily the objects or materials given below aA, water, a plece of rock. a sheet of aluminium, asheet of polythene. a CD, smoke, a sheet of planeodoiron, an umbrella, a lighted fluorescent tube,awll log a plecethe flame of a gas burner, a sheet of cardboard, a licellophane, a wire mesh, kerosene stove Sun firefllucent and luminous or non-luminous:paque,wooden boariae. a wall, sa sheet of carbony. moon.lighted torch, a shepate3. Can you think of creating a shape that would give a circular. In a completely dark room, if you hold up a mirror in front of you, wil yoy sashadow if hetlt tone way and a rectangular shadow if held in another wayreflection of yourself in the mirror? |
| Answer» <p>OPAQUE:a piece of rock, a sheet of aluminum, mirror, a wooden board, umbrella, cardboard, wall, a sheet of carbon paper.</p><p>TRANSPARENT:air, water, a sheet of plane glass</p><p>TRANSLUCENT:a sheet of polythene, smoke, fog, a sheet of cellophane, a wire mesh</p><p>LUMINOUS:a piece of red hot iron, a lighted fluorescent tube, flame of gas burner, lighted torch, kerosene stove, Firefly, sun</p><p>NON-LUMINOUS: moon</p> <p>thank you so much </p> | |
| 1290. |
orClassify the objects or materials given below as opaque, transparenttranslucent and luminous or non-luminous:n, a mirror, a wooden board, asheet of polythene, a.CD, smoke, a sheet of planie glass, fog, a piece of red hotiron, an umbrella, aAir, water, a piece of rock, a sheet of aluminiulighted fluorescent tube, a wall, a sheet of carbon paper,the flame of a gas burner, a sheet of cardboard, a lighted torch, a sheet ocellophane, a wire mesh, kerosene stove, sun, firefly, moon.Can 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?In a completely dark room, if you hold up a mirror in front of you, will you see areflection of yourself in the mirror? |
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| 1291. |
, Classify the objects or materials given below as opaque. transparent orlucent and luminous or non-luminous:water. a piece of rock, a sheet of aluminium, a mirror, a wooden board, aof polythene, a CD, smoke, a sheet of plane glass. fog, a piece of red hotsheetiron. an umbrella, a lighted fluorescent tube, a wall. a sheet of carbon paper.he flame of a gas burner, a sheet of cardboard, a lighted torch, a sheet ofcellophane, a wire mesh, kerosene stove sun firefly. moon.Can you think of creating a shape that would give a circular shadowone way and a rectangular shadow if held in another way?3.if held in4.In a completely dark room. if you hold up a mirror in front of you. will you see areflection of yourself in the miror? |
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| 1292. |
Example 2.1 Calculate the angle of(a) 1o (degree) (b) 1' (minute of arc or arcmin)and (c) 1"(second of arc or arc second) inradians. Use 3600-2π rad, 10-60, and |
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| 1293. |
2. How does a plant obtain water and carbon dioxide ? |
| Answer» <p>Plantstakecarbon dioxidefrom the atmosphere through the leaves. It diffuses through the small pore on the surface of the leaves called stomata. And theplantsgets thewaterand nutrients from the soil through the roots. For photosynthesis process it needswater,carbon dioxide, nutrients and sun light</p> <p>from their surrounding plant obtain water and carbon dioxide..</p> <p>plants take water from soil and carbon di oxide from our exhalation.</p> <p>from their surrounding plant obtain water and carbon dioxide</p> | |
| 1294. |
4. A block of mass 0-2 kg is suspended from the ceiling bya light string. A second block of mass 0:3 kg is suspendedfrom the first block through another string. Find thetensions in the two strings. Take g 10 m/s |
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| 1295. |
A block of mass 0 2 kg is suspended from the ceiling bya light string. A second block of mass 0:3 kg is suspendedfrom the first block through another string. Find thetensions in the two strings. Take g 10 m/s 2 |
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| 1296. |
1. 41EOp. = 4 x 10-7 Wb/2.3. C = 3 x 10% m/s4. g = 9.8 m/s?5. TI = 3.142SECTION-AThe speed of a particle can be .........(a) Zero, positive or negative(6) Zero or negative but never positive(c) Zero or positive but never negative(d) Never zero.A tuning fork produces sound waves in air, Ift!increases .........(a) The frequency increases(6) The wavelength increases(c) The speed of propagation decreases(d) The frequency decreases. |
| Answer» <p>option c because speed cannot be negative</p> | |
| 1297. |
C) 1.2m,30cming the wiring installation with MEGGAR, the most important precaution to be takenm to |
| Answer» <p>Usemeggeronhigh-resistance measurements only,such as insulation measurements or tocheck two separate conductors on a cable.</p> | |
| 1298. |
oCoPpe dTesS reactive tnรกn aluminium4. The solution of Al,(SO,), in water isa. blue in colourb. pink in colourc.green in colourd. elourless |
| Answer» <p>Aluminium sulphate is alum. It is easily soluble in water and solution iscolourless. Aluminium sulphate iswhitein colour andcolourlessin water.</p> | |
| 1299. |
e dimensions of an atom are of the order of an angstrom. Thus, there must be large electric fieldsbetween the protons and clectrons. Why, then is the electrostatics field inside ai.conductor zero? |
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| 1300. |
ewhicactsis//W hatfrom a distance and affects only objects made of iron.f2 N is applied over an area of 2, m2 What Ăźll s |
| Answer» <p>The magnetic force is non-contact force which affects only the objects made of irons.</p> | |