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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.
| 451. |
Multiple Choice Questions1) The number of images ., when measure of the anglebetween mirrors increased.a) decreasesc) increasesb) remains the samed) different answer than these2)Number of images are obtained when the plane mirror are keptparallel to each othera) 2b)4c)1d) infinite |
| Answer» <p>as the angle increases, the number of images in the mirrors will decreases</p> <p>The number of images formed (n) depends upon the angles between them (θ) as</p><p>n = (360o/θ) -1</p><p>now, in this case as the mirrors are placed parallel to each other, θ = 0o</p><p>so,</p><p>n = (360/0) - 1 = infinity</p><p>thus, number of images will be infinite.</p> | |
| 452. |
6. It was found that the astronauts in a spaceship had no difficulty in swallowing foodeven if they were upside down. Can youexplain why? Can you swallow food wheryou are upside down on earth? Explainyour answer. |
| Answer» <p>This wavelike motion of your muscles as they contract and relax is called peristalsis. It takes about 3 seconds for foodtobe pushed into your stomach once you chew andswallowit.SpaceFact: When you stand on your head, your mouthwillbe below your stomach so your foodwillhavetotravel up – againstgravity</p> | |
| 453. |
How will you show that air (or oxygen) is necessary for burnin |
| Answer» <p>Fireis a chemical reaction that creates light and heat fromoxygenand fuel.</p><p> A lit candle needs to drawoxygenfrom theairin order to continueburning.</p><p> If you limit the amount ofairavailable, the candle's flame eventually goes out once it uses up all theoxygen.</p> | |
| 454. |
rove that air supports burning?How will you pthew will you show that air is dissolved in water? |
| Answer» <p> Fill a glass vessel or a beaker. Place the beaker on the tripod over the burner. Let the water in the beaker heat slowly. Now look at the inner surface of the vessel before the water starts boiling, you will be able to see tiny bubbles on the inside. This happens because, on heating water, the air dissolved in the water escapes in the form of bubbles.</p> | |
| 455. |
tiu for resptration?How will you prove thatHow will you show that aie teair supports burning? |
| Answer» <p> Take a small candle and light it. Cover the burning candle using a glass jar. After a few minutes, the burning candle will be extinguished. This happens because the supply of air for the burning process stopped due to a glass jar and as a result of that, the burning of a candle is also stopped. This experiment proves that air supports burning.</p> | |
| 456. |
3 How will you prove that air supports burnin |
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| 457. |
In a completely dark room, if you hold up a mirrorreflection of yourself in the mirror?JGGESTED ACTIVITIES |
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| 458. |
t of you. wtIn a completely dark room. if you hold up a mirror in fronreflection of yourself in the mirror?4. |
| Answer» <p>yes</p> | |
| 459. |
1 In a completely dark room. if you hold up a mirror in front of you, will you seereflection of yourself in the mirror? |
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| 460. |
1LULL IULICI Uin a completely dark room, if you hold up a mirror in front of you, will you see areflection of yourself in the mirror? |
| Answer» <p>no because its a dark room</p> <p>no not at all, as there is no light to get reflected.</p> <p>no because it is a dark room</p> <p>No, we can not see the reflection of ourself in mirror because image is formed due to light and in dark room there is no light,so we can't see our reflection in mirror.</p> <p>Image is formed due to the reflection of light from a mirror. In a completely dark room,there is no light to get reflected; therefore,we will not see our reflection in the mirror.</p> <p>no if you want to see your image on mirror so you have to turn on the light</p> <p>no, you will not see your reflection in the mirror. as per according to the theory reflection occur when light falls on the mirror then only reflection can occur. as per no light is there no reflection can occur in the dark room.</p> <p>no way, because it's a dark room✖</p> | |
| 461. |
4.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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| 462. |
Snadow l neld in another way?In a completely dark room, if you hold up a mirror in front of you, will you se sreflection of yourself in the mirror? |
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| 463. |
TestAnswer PleaseMathla oo at om |
| Answer» <p>3×4=12 is the correct answer of the given</p> <p>18 is the answer of the following</p> <p>9×10=90 8×9=727×8=566×7=423×6=18</p> <p>3 x 4 = 12 very simple yrr .........</p> <p>3x6=18is the correct answer</p> <p>3x4=12 is the best answer </p> <p>9x10= 908x9=727x8=566x7=423x4=12</p> <p>3×4=12 is very correct answer </p> <p>18 is the answer of the following</p> <p>12 aisa kyun nahi ho sakta </p> <p>15,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,</p> <p>We have to multiply the give number with its next numberie) 3×4=12</p> | |
| 464. |
Can you think of creating a shape that would give a ctrcular shadow if held tn/ one 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 setreflection of yourself in the mirror?a |
| Answer» <p>1. Cylinder gives a circular shadow when the circular base is illuminated and cast rectangle shadow when illuminated from the curved surface side. </p><p>2. In a completely dark room, a person won't be able to see the reflection of himself in the mirror. The object either needs to produce its own light or reflect light from other source in order to be form a virtual image in the mirror, which is not possible in the dark room.</p> | |
| 465. |
3. A uniform chain of length 2m is kept on a table such that a length of 60em hangs freely troedge of the table. The total mass of the chain is 4kg. What is the work done in pullingchain on the table? Take g- 10 m/s. [PMT]the entie |
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| 466. |
(39) What is meant by specific heat capacity?IOR Define specific heat capacity.] How willyou prove experimentally that differentspecific heatsubstances have differentcapacities? |
| Answer» <p>Thespecific heatis the amount ofheatper unit mass required to raise the temperature by one degree Celsius. ... Thespecific heatof water is 1 calorie/gram °C = 4.186 joule/gram °C which is higher than any other common substance. As a result, water plays a very important role in temperature regulation.</p> | |
| 467. |
The force F, and F, act on a 5kg mass. If F -20N and F = 15N and the angle betwacceleration is27een the force is 600, then them/sec2 |
| Answer» <p>Resultant force,F = √[(F1)^2 + (F2)^2 + 2(F1)(F2)cosθ]Assuming that F2 is horizontal in both cases, direction of F makes an angle of tanֿ¹ [F1sinθ / (F2 + F1cosθ)]</p><p>θ = 60°F = [(20)^2 + (15)^2 + 2(20)(15)cos60°] = 30.4 N=> acceleration = F/m = 30.4/5 = 6.8 m/s^2Direction of acceleration istanֿ¹ [F1sinθ / (F2 + F1cosθ)]= tanֿ¹ [20sin60° / (15 + 20cos60°)]tanֿ¹ (10√3 / 25)= 35° with F2 towards F1.</p> | |
| 468. |
ultiple Choice uPresernce of tissues in a multicellular organisma) faster developmentb)division of labourc) higher reproductive potentiald) body strength |
| Answer» <p>option Dpresence of tissues in a multicellular organisms ensuresBODY STRENGTH.tissuesare group ofcells, these gives mechanical support to the body and provide a proper shape. </p> | |
| 469. |
rive cxamples of total intcindl sefle ction |
| Answer» <p>In diamond and optical fibre wire have total internal reflection property.</p> | |
| 470. |
Answer the following questions:The mass of a lift is 2000kg. When the tension in the supporting cable28000N, then calculate its acceleration. |
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| 471. |
ln is of little importance.hich is a stronger reducing agent Cr2+ or Fe2+ and Why?NCE |
| Answer» <p>As we know that, the more negative the electrode potential greater is the reducingpower of the electrode. The highest oxidation state for Cr is +6, therefore it can loose 3 more electrons, whereas Fe needs to loose only 1 electron to achieve its highest oxidation state of +3. Thus, Cr3+ is morereducingthanFe2+.</p> | |
| 472. |
The layer which separates velamen (a spongy tissue inepiphytic roots of some orchids for absorption ofatmospheric moisture) from cortex is called |
| Answer» <p>It is called Exodermis.</p> | |
| 473. |
Q. &.Name two objects that can float on water and two objects which sink in waterAns. |
| Answer» <p>Mostobjects floatsdue to .low density.Wood,rubber foam, coconut with its cover .</p><p>Large objects sink because they are more dense than water. Most metals will sink, such as iron or aluminium, and so will many plastics. Small objects can float because they are less dense than water or if they are small and don't break the surface tension.</p> <p>Most objects floats due to .low density.Wood,rubber foam, coconut with its cover</p><p>iron, oil, stone, glass, etc.</p> <p>sure</p> | |
| 474. |
Corrosion which takes place due to atmospheric gases is known asa) Electrochemical corrosion b) Wet corrosionc) Dry corrosion d) Pitting corrosion |
| Answer» <p>mere ko to nahi aata </p> <p>Dry corrosion – It is also known as chemical corrosion . Such type of corrosion takes place due to direct chemical action of atmospheric gases and anhydrous liquids on the metal surface. 4. DRY CORROSION It takes place due to direct chemical action of atmospheric gases like CO2 , SO2 .</p><p>hope this will help you like my answer and MARK IT AS BEST ANSWER. </p> | |
| 475. |
6. If youobserve a drop of blood under a microscope, which cells would you see? What are thefunctions of these cells? |
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| 476. |
) Cell wallMitochondria |
| Answer» <p>Acell wallis a structural layer surrounding some types ofcells, just outside thecell membrane. It can be tough, flexible, and sometimes rigid. It provides the cell with both structural support and protection, and also acts as a filtering mechanism. Cell walls are present in mostprokaryotes(exceptmycoplasmabacteria), inalgae,plantsandfungibut rarely in othereukaryotesincluding animals. A major function is to act as pressure vessels, preventingover-expansionof the cell when water enters.</p><p>Themitochondrion(pluralmitochondria) is a double-membrane-boundorganellefound in mosteukaryoticorganisms. Some cells in somemulticellularorganisms may, however, lack them (for example, mature mammalianred blood cells).</p> <p>thanks for </p> | |
| 477. |
Functions of cell wall: |
| Answer» <p>Functions of cell wall: It protects the inner contents of the cell.It provides rigidity and support to the entire cell. </p><p>Please hit the like button if this helped you</p> | |
| 478. |
7. Two objects of masses 100g ana 200 g are movingthe same line and direction with velocities of 2ms1ms-1 respectively. They collide and after collisionfirst object moves a velocity of 1.67ms-1. Determivelocity of the second object. |
| Answer» <p>thanks</p> | |
| 479. |
RK OUESTIONSWhich soil is considered to be most fertile and used for growing crops? |
| Answer» <p>Loamy soils are the most fertile soil. Loamy soils are mixture of sand , silt , and clay. They have a lot of organic matter.</p> | |
| 480. |
3) How will you find out whether the soil is fertile or not using an acidbaseindicator? |
| Answer» <p>Ans :- Take a few grams of soil and mix it with little amount of water to form solution. Now pass this solution from filter paper to purify it. Now, the solution is ready to check it's PH. Put the PH paper in the solution and observe. If the PH comes less than 7 then it is acidic or if the PH comes more than 7 then it is basic. By this, if the PH comes more or less than 7 than it is infertile other wise fertile.</p> | |
| 481. |
A stone of 1 kg is thrown with a velocity of 20 m s acroathe frosen surface of a lake and comes to rest after travellga distance of 50 m. What is the force of friction between thestone and the ice? |
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| 482. |
E X E R C I S E S1. Which one of the following materials cannot be used to make a lens?(a) Water(b) Glass(d) Clayrirtual erect and larg(c) Plastic |
| Answer» <p>what is concave mirror</p> | |
| 483. |
The phenotypic ratio of a dihybrid crossF2 generation is |
| Answer» <p>Mendel observed that the F2 progeny of his dihybrid cross had a9:3:3:1ratio and produced nine plants with round, yellow seeds, three plants with round, green seeds, three plants with wrinkled, yellow seeds and one plant with wrinkled, green seeds.</p> | |
| 484. |
Why cell membrane is called the selectively permeable membrane? |
| Answer» <p>The outermost boundary of the cell which separates the intracellular material from extracellular material is known as cell membrane or plasma membrane. The cell membrane allows the entry and exit of selective substances only. This is the reason that plasma membrane is called a selectively permeable membrane.</p> <p>because the cell membrane allows the entry and exit of selective materials only.</p> <p>cell membrane is called the selective permeable membrane because the cell membrane allows the entry and exit of selective material only</p> <p>because it control the entry and exit of the particals </p> | |
| 485. |
6.What is the law of independent assortment? Explain with an example?(AS1) |
| Answer» <p>The Principle ofIndependent Assortmentdescribes how different genesindependentlyseparate from one another when reproductive cells develop.Independent assortmentof genes and their corresponding traits was first observed by Gregor Mendel in 1865 during his studies of genetics in pea plants.</p> | |
| 486. |
structure of a water molecule is shown in figure2. TheE1). Find the distance of the centre of mass of the(9molecule from the centre of the oxygen atom.-100.96 x10 m 104 0.96x10 m--10Figure 9-E1 |
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| 487. |
A particle of mass 50 g moves on a straight line. Thevariation of speed with time is shown in figure (5-E1). Findthe force acting on the particle at t-2, 4 and 6 seconds6.v (m/s)15100 2 4 6 8 t(s)Figure 5-E1 |
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| 488. |
11. In the adjoining figure, the point P lles(a) in the interior of A ABC(b) in the exterior of A ABC(c) on A ABC(d) outside A ABC |
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| 489. |
2.Cotton is a cellulose fibre. What is wool? |
| Answer» <p>Ans :- Cotton, like rayon and wood pulpfibers, is made ofcellulose.Celluloseis a macromolecule made up of anhydroglucose unit connected by 1, 4 oxygen bridges with the polymer repeating unit being anhydro-beta-cellulose.</p><p>Woolis thetextilefiberobtained fromsheepand other animals, includingcashmereandmohair fromgoats,qiviutfrommuskoxen, fromhideandfur clothingfrombison,angorafromrabbits, and other types of wool fromcamelids;additionally, theHighlandand theMangalicabreeds ofcattleandswine, respectively, possess wooly coats. Wool consists of protein together with a few percent lipids. In this regard it is chemically quite distinct from the more dominant textile,cotton, which is mainly cellulose.</p> | |
| 490. |
Why is geothermal energy referred to as a renewable source of energyWhy is geothermal energy referred to as a renewable soturce of energy? |
| Answer» <p>Ans :- Geothermal energyis considered arenewable resourcebecause it exploits the Earth's interior heat, which is considered abundant, and water, once used and cooled, is then piped back to the reservoir.</p> | |
| 491. |
2. The Ganga Action Plan was launched with an objective to(a) reduce its pollution level(c) augment its water level at Kanpur(b) increase its popularity(d) make it world famous |
| Answer» <p>The answer is OPTION A.</p> | |
| 492. |
2. Write scientific name of mulberry |
| Answer» <p>The scientific name for a mulberry tree depends on the species: a red mulberry is Morus rubra, a white mulberry is Morus alba and a black mulberry is Morus nigra.</p> | |
| 493. |
Who among the following was the DeputySpeaker of the first Lok Sabha in India?(A) Rabi Ray(B) Bali Ram Bhagat(C) M Ananthasayanam Ayyangar(D) G LakshmananQ33Article 66 of the Constitution of India dealswith:034 |
| Answer» <p>33. (C) M Ananthasayanam Ayyangar</p><p>Explanation:Shri M. Ananthasayanam Ayyangar was the first Deputy Speaker (30 May 1952 – 7 March 1956). In the 16th Lok Sabha, M. Thambidurai is the Deputy Speaker.</p> | |
| 494. |
the water that is fit for human consumptionWater that easily forms lather with soap4 Reduced or very limited availability of water5. The process of falling down of water to thesurface of the EarthB. State true (T) or false (F).1. Stepwells are special to western India.2. Exploitation of groundwater leads todepletion of the water table.3 Calcium hydrogen carbonate is insoluble in water.4 Through infiltration, surface water seepsdown the soil.Water is made available on the surface ofthe earth through water cycle.5. |
| Answer» <p>1) T2) T3) F4) T5) T</p> <p>thanks brother</p> | |
| 495. |
What happens at the synapse between two neurons? |
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| 496. |
What happens at the synapse between two neurons |
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| 497. |
explain land breeze and sea breeze |
| Answer» <p>In the day, when the sun is up, the land heats up very quickly and the air above it warms up a lot more than the air over the water. The warm air over the land is less dense and begins to rise. Low pressure is created. The air pressure over the water is higher with cold dense air, which moves to occupy the space created over the land. The cool air that comes along is called a sea breeze.</p><p>In the night, the reverse happens. The land quickly loses its’ heat whiles the water retains its’ warmth. This means the air over the water is warmer, less dense and begins to rise. Low pressure is created over the water. Cold and dense air over the land begins to move to the water surface to replace the warmer rising air. The cool breeze from the land is called a land breeze.</p> | |
| 498. |
WHAT IS SEA BREEZE? |
| Answer» <p>The land gets heated up by the heat radiated by the sun, much faster than the water during daytime. This heats up the air over the land and it expands and hence the hot air rises up and creates a vacuum. The cool air from the sea occupies the space left by the hot air. The warm air from the land moves towards the sea to complete the cycle. The air from the sea is called the sea breeze.</p> <p>I WAS KNOWING IT .</p> | |
| 499. |
Figure-6.33 shows two coherent sources S, and S, which emitsound ofwavelength λ in phase. The separation between thesources is 32. A circular wire of large radius is placed in such awaythat S,S, lies in its plane and the middle point of S S, is atthe centre of the wire. Find the angular positions 0 on the virefor which constructive interference takes place. |
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| 500. |
v) Wind breeze and strom are the properties of air. |
| Answer» <p>A gentle wind or when the wind blows slowly, it is called a breeze.Fast and strong winds cause a storm. A storm can blow away things. Storms can damage buildings</p><p>So the statement given by you is true</p> <p>the statement is true</p> | |