InterviewSolution
Saved Bookmarks
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.
| 4801. |
2. A wire of resistance Ri is cut into five equal pieces. These five pieces of wire are then connected in parallel.If the resultant resistance of this combination be R2, then the ratio R is:(e) 5ich Order Thinkna Skills (wHOTS25(d) 25 |
| Answer» | |
| 4802. |
What is the force between two small charged spheres havingcharges of 2 x 10-7C and 3 x 10"c placed 30 crn apart in air? |
| Answer» | |
| 4803. |
Give 5 acids and 5 bases namesyou use at home and providerelevant information withpictures (do it in your note book) |
| Answer» | |
| 4804. |
(1) What are the effects of a force acting onan object? |
| Answer» <p>TheEffectsofForces. Aforce acting on an object maycause theobjectto change shape, to start moving, to stop moving, to accelerate or decelerate. When twoobjectsinteract with each other they exert aforceon each other, theforcesare equal in size but opposite in direction.</p> | |
| 4805. |
Define HealthAn object of mass m and velocity v has kinetic energy = 200 J. Find the nthe mass of the object becomes double and velocity still remains the sameb uorant force depends. |
| Answer» | |
| 4806. |
1. What is a first aid? |
| Answer» <p>First aid is an emergency measure, generally consisting of simple, often life-saving techniques that most people can train to perform with minimal equipment and no previous medical experience.</p> | |
| 4807. |
Rotation of the earthORersuitational potential energy of a body. Derive an expression for the gravitational potentialenengy of a body of mass m located at distance r from the centre of the earth. |
| Answer» <p>Gravitational potential energyisenergy an objectpossesses because of its position in agravitationalfield. The most common use ofgravitational potential energyis foran objectnear the surface of the Earth where thegravitationalacceleration can be assumed to be constant at about 9.8 m/s2.</p> | |
| 4808. |
State the functions of the three types of blood vessels. |
| Answer» <p>There arethreemajortypes of blood vessels: the arteries, which carry thebloodaway from the heart; the capillaries, which enable the actual exchange of water and chemicals between thebloodand the tissues; and the veins, which carrybloodfrom the capillaries back toward the heart.</p> | |
| 4809. |
The orbital angular momentum of a satelliterevolving at a distance r from the centre is L.If the distance is increased to 16r, then the newangular momentum is |
| Answer» <p>Case1)mvr=L. case 2). R=16r but v is inversely proportional to square root of R hence,v becomes 1/4 th of original value and R becomes 4 times .Hence overall output is four times that of case 1) hence answer is 4L.</p> | |
| 4810. |
)Theradii of orbits of two satellites revolvingaround the earth are in the ratio 3:8. Comparetheir (i) critical speeds (ii) period of revolution |
| Answer» <p>1</p> <p>2</p> | |
| 4811. |
9. Which of the statements given below is correct?(i) In winter the winds flow from the land to the ocean.(ii) In summer the winds flow from the land towards the ocean.(ii) A cyclone is formed by a very high-pressure system with veryhigh-speed winds revolving around it.The coastline of India is not vulnerable to cyclon(iv) |
| Answer» | |
| 4812. |
42. Which cells of "Crypts of Lieberkuhn" secreteantibacterial lysozyme?(1) Paneth cells (2) Zymogen cells(3) Kupffer cells (4) Argentaffin cells |
| Answer» <p>(1) Paneth cells</p><p>Explanation:In the small intestine, Paneth cells residing at the bottom of the intestinal crypts are the key effectors of innate mucosal defence. Paneth cells produce large amounts of α-defensins and other antimicrobial peptides, such as lysozymes and secretory phospholipase A2 (sPLA2).</p> | |
| 4813. |
A man walks 30 mtowards north, then 20mtowardseast and in the last 30 V 2 m towards south -west.The displacement from origin is:(1) 10 m towards west(2) 10 m towards east7.(3) 60/2m towards north west(4) 60V 2 m towards east north |
| Answer» <p>Let north be +j direction and east be +j direction </p><p>so the displacement are 30j + 20i </p><p>and at last , for south west the directions are just opposite = -30i-30j giving the magnitude of 30√2</p><p>now adding all, we get </p><p>displacement as = 20i+30j-30i-30j = -10i </p><p>the answer is 10 m towards west.. ( -ve sign) </p> | |
| 4814. |
5. /The atomic number of Al is 13 and that of Cl is 17 How many electrons, protons, neutronsare present in Al and Cl ions? |
| Answer» <p>There is change only in number of electeonsin Al3+ 3 electrons are lost hence 13-3=10 electrons13,13-protons and neutronsin Cl-1 electron is gained hence 17-1=18 electrons17,17-protons and neutrons</p> | |
| 4815. |
A pendulum oscillates 25 times in 5 seconds. Find itstreqU |
| Answer» | |
| 4816. |
A car moves at a constant speed of 60 km/hr for1 km and 40 km/hr for next 1 km. What is theaverage speed of the car?(Ans : 48 km/hr) |
| Answer» | |
| 4817. |
Example 6 A point particle of mass 0.1 kg is executingSHM of amplitude 0.1 m. When the particle passesthe mean position, its kinetic energy is 8 x 10^-3 J. Obtainthe equation of motion of this particle if the initial phase ofoscillation is 45 |
| Answer» | |
| 4818. |
6.The potential energy of a particle executing SHM changes from maximum to minimum in 5 s. Then thetime period of SHM is(A) 5 s(B) 10 s(C) 15 sD) 20s |
| Answer» <p>potential energy oscilllates twice in the time period</p><p>means the frequency of P.E = times of that of the actual oscillation</p><p>so, time period with will be twice of that of P.E = 5*2 = 10s </p> | |
| 4819. |
13. It 23 TIL UI atttUIT14. What happens when the temperature of a saturated sugar solution is increased ?followin contains less solute at a given temperature and |
| Answer» <p>Dillution of a certain substance in a certainsolventdepends on temperature. Specifically, dillution is increased when temperature increases. Since the solution was saturated, it couldn't dissolve more sugar. Once the temperature drops, the water has a new saturation point (lower grams of sugar) and now discharges the sugar from its mass.</p> | |
| 4820. |
E-3.a During a heavy rain, hailstones of average size 1.0 cm in diameter fall with an average speed of 20 mis.Suppose 2000 hailstones strike every square meter of a 10 m x 10 m roof perpendicularly in onesecond and assume that the hailstones do not rebound. Calculate the average force exerted by thefalling hailstones on the roof. Density of hailstones is 900 kg/m, take (3.14) |
| Answer» | |
| 4821. |
memenbering/UMultiple choice questionsA. Choose the correct option.1. Air exerts pressureb) sidewaysd) in all directionsa) downwardsc) upwardsA tin roof may blow off when wind speedsare high because ofa) high pressure due to high wind speedb)low pressure due to low wind speedc) low pressure due to high wind speedd) excessive rainfall2. |
| Answer» <p>d} in all directionsc} as more speed of wind causes a low pressure, hence the air below the roof exerts an upward force to lift up the roof.Brief explanation: When the velocity of the wind is great enough, the air pressure above the surface is lower compared to that underneath. This cause the roof to blow off. The aeroplane work in the same principle (lower pressure on top surface).</p> <p>which is this school </p> | |
| 4822. |
needle shows denecdornName three liquids, whichwhen tested in the mannershown in Fig. 14.9. maycause the magnetic needleto deflect.3.Fig. 14.9 |
| Answer» <p>thank you</p> | |
| 4823. |
Fill up the blanks in the following:(a) The process of changing of water into its vapour is called(b) The process of changing water vapour into water is called(c) No rainfall for a year or more may lead to(d) Excessive rains may cause1..oin that region |
| Answer» | |
| 4824. |
Ex. 1. A fair coin is tossed 5 times. Find the probability that it shows exactlythree times head.(March '15) |
| Answer» <p>probability= 1/2...........</p> | |
| 4825. |
Draw a diagram to show the formation of the image of a distant tree by a pinhole camera |
| Answer» | |
| 4826. |
\frac { 2 ^ { n } + 2 ^ { n - 1 } } { 2 ^ { n + 1 } - 2 ^ { n } } |
| Answer» | |
| 4827. |
if the mass of the object is 6430 kg and density is 15 kg per meter cubefind the volume |
| Answer» | |
| 4828. |
cover this distance. Calculale huThe odometer of a car reads 57321.008:30 AM. What is the distance moved by the car, if atodometer reading has changed to 57336.0 km? Calculate the spthe car in km/min during this time. Express the speed in km/h also,km when the clock shows the timeate the speed of5.08:50 AM6. Salma takes 15 minutes from her house to reach her school on abicycle. If the bicycle has a speed of 2 m/s, calculate the distancebetween her house and the school. |
| Answer» <p>distance = s×? </p> <p>distance = speed × time</p><p>5. So we have the condition as follows :-</p><p>At 8:30 a.m - 57321 km.At 8:50 a.m - 57336 km. </p><p>Time taken= 20 minsDistance travelled = 15 km </p><p>Speed = distance / time </p><p>km / min = 15km / 20 mins = 0.75 km / hr = 0.75 × 60 =45 km / hr</p> | |
| 4829. |
Dependence of molecular speeds on temperature |
| Answer» | |
| 4830. |
cellophane, a wire mesh, kerosene stove, sun, firely, Ioan 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? |
| Answer» <p>Thank you </p> | |
| 4831. |
cellophane, a wire mesh, kerosene stove, sut.3. Chadow if held inan you think of creating a shape that would give a circular sone way and a rectangular shadow if held in another way?rou, will you see |
| Answer» | |
| 4832. |
cisesIl in the blanks:The main steps of nutrition in humans areandThe largest gland in the human body isThe stomach releases hydrochloric acid andjuices whichact on food.The inner wall of the small intestine has many finger-like outgrowths!called-) Amoeba digests its food in theMark T if the statement is true and 'F if it is false:a) Digestion of starch starts in the stomach. (T/F)b) The tongue helps in mixing food with saliva, (T/F)The gall bladder temporarily stores bile. (T/F) |
| Answer» <p>protein,vitamin,fats ,carbohydrate</p> <p>saliva digestice food vacoule</p> | |
| 4833. |
4.2.3.Befine a balanced chemical equation. Why should an equation be balanced?Ca(OH)2 +Balance the given chemical equation:HNO, - Ca(NO)exothermie.Deline combination reaction. Give one example of a combination reaction which5.6.What is rancidity? Mention any two ways by which rancidity can be prevented.equations for these reactions.What is the difference between displacement and double displacement reactions?7. Decomposition reactions require energy either in the form of heat or light or electrifor breaking down the reactants. Write one equation each for decomposition reactions wheenergy is supplied in the form of heat, light and electricity.BIOLOGY (MM-14)Answer the following questions:Q1. How does the plant cope up with lack of water in desert conditions?Q2. Why is the rate if breathing much faster in aquatic organisms than those of terrestrialorganisms?Q3. In the experimental setup to show that" CO2 is given out during respiration". Namesubstance taken in the small test tube kept in the conical flask. State its functions and theconsequences of its use.OR(a) Define excretion.(b) Name the basic filtration unit present in the kidney.Q4. Draw a diagram of the human urinary system and label in it.a)Kidney b)Ureter c)Urinary Bladder dUrethraQ5. Differentiate between Arteries and Veins (any four).Q6. Write one feature that is common to each of the following pairs of the term/organsi) Glycogen and starch ii) chlorophyll and hemoglobin iii) Gills and lungsQ7.Write the functions of each of the followingi)Bile ii) HCI i) villi.PHYSICS (MM-13)1. How is ammeter connected in a circuit to measure the current?2. The magnetic field for a current carrying conductor is anticlockwise, if the conductor was heldeast-West direction, what is the direction of current?3. State the right hand thumb rule4. Keeping the Potential difference constant, the residence of circuit is doubled. By whatdoes the current change in the circuit? |
| Answer» <p>the process that takes place in the human being to remove the unwanted waste from body to outside is called excretion</p> <p>I don't know I don't know I don't know what is the answer</p> | |
| 4834. |
8. Draw a labelled diagram of the urinary system showing and explainingutill the urine |
| Answer» | |
| 4835. |
Give the economic importance of lichens |
| Answer» <p>The economic importance of lichens are as follows −</p><p>Early colonizers in barren dry and naked rocks, cliffs, mountains and new terrains.</p><p>It paves the way for the growth of mosses and grasses.</p><p>Staple food for many animals in tundra region.</p><p>Used as biological stain.</p><p>Source for litmus paper which is used as pH indicator.</p><p>Used in in making perfumes.</p><p>Used for the preparation of ointment for the treatment of burns and wounds.</p><p>Decrease in lichens in an area is indicative of air pollution especially Sulphur dioxide pollution.</p> | |
| 4836. |
b) GaroohGive two examples of the following.1) Monovalent elements2) RadicalsMatch the following1) Helium2) Aluminium3) Atomic number 124) Atomic number 8a) Magnesiumb) Inert gasc) Trivalentd) OxygenChoose the correct answer from the following:l) The ratio of the atoms of hydrogen and oxygen in a molecule ofIl)IlIl) The valency of cuprous and cupric ions areb) 1:2c) 2:1d) 2Atomicity of hydrogen isa) 1b) 2c) 3a) +1 and +2 respectivelyc) +3 and +4 respectivelyb) +2 and +3 respectivelyd)+1 and +3 respectively |
| Answer» <p>match the following1) inert gases2) trivalent3) magnesium4)oxygen</p><p>choose the correct answeri) WATER - H20 , so ratio is 2:1 option Cii) 1, option Aiii) remember a trick.. - "rous" ending will always have lower valancy that "ric" ending..so , cuprous will have +1 and cupric will have +2.option A.</p> | |
| 4837. |
Insertfive numbers between 8 and 26 such that the resulting sequence is an A.P. |
| Answer» <p>thanks </p> | |
| 4838. |
A block of mass 1 kg is suspended by a string of mass 1 kg, length1m as shown in figure. (g 10 m/s?) Calculate: [15JP110728](a) the tension in string at its lowest point.(b) the tension in string at its mid-point.(c) force exerted by support on string.dad (rom tho ceiling by a light string, A second block of ma |
| Answer» <p>According to given question the block and string have same mass = 1kg and length of string is 1metre (taking g =10m/s2)</p><p>now the tension in the string at the lowest point is only due to block of mass 1 kg</p><p>T = mg</p><p> = 1 x10 = 10 N.</p><p>B> the tension at middle is due to string and the blockand total mass = (1+0.5) kg</p><p>(since at middle the mass of string gets half)</p><p>hence tension at middle is = 1.5 x 10 = 15N</p><p>C > now tension at support is due to combined mass of string and block Total mass = 1+1 = 2kg Tension = 2 x10 =20NHence 10,15, 20 are the tensions in the string at differnet positions.</p> | |
| 4839. |
6.12 An electron and a proton are detected in a cosmic ray experiment, the first with kineticenergy 10 keV, and the second with 100 keV. Which is faster, the electron or theproton ? Obtain the ratio of their speeds (electron mass 9 1 1x10 31 kg, proton mass1 67x10 27 kg, l eV = 1 60×10J) |
| Answer» | |
| 4840. |
E-5.A string vibrates in 4 loops with a frequency of 400 Hz(a) What is its fundamental frequency?(b) What frequency will cause it to vibrate into 7 loops |
| Answer» <p>4n= 400 So n i.e fundamental frequency is 100Hz And at 7n i.e 700Hz it will vibrate in 7 loops</p> | |
| 4841. |
4. List two disadvantages of synthetic fibres. |
| Answer» | |
| 4842. |
What is a neutralisation reaction? Give two examplesGive two important uses of washing soda and baking soda. |
| Answer» <p>When acid and base react with each other to produce salt and water then such reaction is known as neutralisation reaction. For exampleHCL+ NaOH ------->>> NaCL + H2O</p> <p>Uses of Washing Soda:</p><p>1. Sodium carbonate (washing soda) is used in glass, soap, and paper industries.</p><p>2. It is used in the manufacture of sodium compounds such as Borax.</p><p>Uses of Baking Soda:</p><p>1. Sodium hydrogen carbonate is also ingredient in antacids. Being alkaline, it neutralizes excess acid in the stomach and provides relief.</p><p>2. It is also used in soda-acid fire extinguishers.</p><p>3. It is used as baking powder in confectionary items like cake, pastry etc.</p> | |
| 4843. |
Cormlh I with those in Column 11:Column I(a) Bud(b) EyesColumn IIMaple(ii) SpirogyraC(ii) Yeast(iv) Bread mould(v) PotatĆĄ(vi) Rose(i)(c) Fragmentationid) Wings(e) Spores,b |
| Answer» | |
| 4844. |
6. What are stomata? Give two functions of stomata. |
| Answer» <p>The tiny pores or openings present under the leaves of the plants is calledstomata.Two functions of stomata: (i) It helps in breathing of the plants. (ii) It helps in exchange of gases which takes place inside the plant cells</p> | |
| 4845. |
A vessel of 120 ml. capacity contains a certain amount of gas at 35 C and 1.2 barpressure. The gas is transferred to another vessel of volume 180 ml, at 35 °C. Whatwould be its pressure?mL. at 35What |
| Answer» | |
| 4846. |
l'breeding' of sheep? |
| Answer» <p>A flock ofsheepis generally mated by a single ram, which has either been chosen by a farmer or has established dominance through physical contest with other rams (in feral populations). Mostsheephave abreedingseason (tupping) in the autumn, though some are able tobreedyear-round.</p> | |
| 4847. |
Q.3 Patsun is another name of:(a) Cotton plant(c) Kashmiri sheep(b) Jute plant(d) of theseS. |
| Answer» <p>Patsun plant is used to obtain jutefibres.</p><p> b is the correct answer </p> <p>Patsum plant is used to obtain jute plant</p> | |
| 4848. |
3 Why do we often sneeze when we inhale a lot of dust-laden air?feach with water L abel them A. R |
| Answer» <p>Whenwe inhale aircontainingdustparticles, the particles get trapped in the hair present in out nostrils. Sometimes, these particles may pass through the hair and enter the nasal cavity. The irritate the mucus lining of the nasal cavity, and as a resultwe sneeze.</p> | |
| 4849. |
Gİve ㅡ se l ation betweenwavelength of lightvelo cityfrequency-a |
| Answer» | |
| 4850. |
1. Plants like wheat, rice and onion haveroots. |
| Answer» <p>plants like wheat,rice and onion have 'fibrous root'</p> <p>plants like wheat,onion etc.... have 'fibrous roots '</p> <p>they have fibrous root .</p> <p>They have Fibrous root .</p> <p>plants like wheat, rice and onion have "fabrous root".</p> <p>fibrous root is the right answer</p> <p>plants like wheat,rice and onion have 'fibrous root'</p> <p>ok </p><p>fibrous roots</p> <p> fibrous root is the right ans</p> | |