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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.
| 601. |
)Concave lens :A concave lens is thin at the middle andthick st theQ.edges, das athe light rays.33.Define optical centre of a lens. What happens when a ray of light prough the optical centre of lens ? |
| Answer» <p>The optical centre is defined as the geometric centre of the curved lens.</p><p>The ray of light passes through the optic centre without suffering any deviation.</p> | |
| 602. |
6. What is a virtual image? Give one situation where a virtual image isformed.onvex and a concave lens. |
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| 603. |
What are the basics of chaining and levelling? |
| Answer» <p>Ans :- Chaining:It is a type of surveying in which only linear measurements are made in the field.</p><p>Levelling:Its a branch of surveying the object of which is to find theelevationsof given lines with respect to a given orassumeddatumline and toestablishthe points at a givenelevationwith respect todatum.</p> | |
| 604. |
why does a concave lens always form a virtual image of an object? Draw a diagram to illuatrate |
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| 605. |
What type of image is formed(a) in a plane mirror ?(b) on a cinema screen ? |
| Answer» <p> thnku </p> | |
| 606. |
li an object is placed at a distance of 5.5 cm. in front of a plane mirrormage? |
| Answer» <p>A plane mirror always creates an image with the same distance to the mirror as the object, only in the other direction. </p><p>So both of them have a distance of 5.5 cm, one is 5.5 cm to the left, one 5.5 cm to the right, thus their mutual distance is 11 cm.</p> <p>thanks</p> <p>A plane mirror always creates an image with the same distance to the mirror as the object, only in the other direction. So both of them have a distance of 5.5 cm, one is 5.5 cm to the left, one 5.5 cm to the right, thus their mutual distance is 11 cm.</p> <p>shortcut </p> | |
| 607. |
i\\an Mala. Mala isKaala is shorterKaala is taller thhortest?taller than Bala.than Neela. Who is the sA) Kaala B) Maalaрео) 8818 3 D) Neela |
| Answer» <p>Bala is the shortest among all of them</p> | |
| 608. |
- Give characteristics of solid state. |
| Answer» <p>Thesolidsare characterized by incompressibility, rigidity and mechanical strength. The molecules, atoms or ions insolidsare closely packed that is, they are held together by strong forces and cannot move about atrandom.</p> <p>Solid-statenanopores can be used to detect nucleic acid structures at the single moleculelevel. An e-beam has been used to fabricate nanopores in silicon nitride and silicon dioxidemembranes, but the pore formation kinetics, and hence its final structure, remain poorly…</p> <p>Characteristics of Solid State. Thesolidsare characterized by incompressibility, rigidity and mechanical strength. The molecules, atoms or ions insolidsare closely packed, i.e., they are held together by strong forces and cannot move about atrandom.</p> <p>Characteristics of solid state - </p><p>Definite Mass and Volume and Shape: Mass and Volume of a solid and liquids remain same. But unlike liquids solids also have a fixed shape. The tightly packed atoms of a solid ensure that they maintain a definite shape.</p><p>Strong Intermolecular Forces: The tight close knit packing of molecules is due to the strong intramolecular forces between particles. This also means that the intermolecular distances between particles are also very small/short. This is the reason why solids hold their shape and do not spread out like liquids or gasses.</p><p>Solids are Incompressible: As there is already no spaces between molecules, solids cannot be compressed further</p><p>Boiling Points: Solids have Boiling and Melting Points above room temperature</p><p>Thermal Energy: Solids have low thermal energy. So this means their constituent particles do not roam about freely like in liquids and gases. They only oscillate about their mean positions.</p> | |
| 609. |
What is the solid state? |
| Answer» <p>the state of matter in which materials are not fluid but retain their boundaries without support, the atoms or molecules occupying fixed positions with respect to each other and unable to move freely.</p> <p>matter consists of three states solid is a state where there is molecules are tightly packed intermolecular force is maximum and intermolecular space is minimum i hope you better understand if not take a glance about a topic matter</p> | |
| 610. |
At constant temperature pressure of a gas is increased by 20% then find the change in volume |
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| 611. |
R CI S E Sroduction takes place through budd(a) amoeba.(b) yeast.ing in) plasmodium.leishmania.hich of thee following is not a part of the female reproductiv |
| Answer» <p>b)Asexual reproduction takes place through budding in yeast.</p> | |
| 612. |
A police man was appointed as traffic poliwas appointed as traffic police man at a busy road crossing. After few months he complained forcitation in eves and breathing problems. What could be the possible reasons ?Tah2 |
| Answer» <p>The main reason is pollution</p> <p>pollution is the correct answer of the given question</p> <p>this main reason is pollution........</p> | |
| 613. |
2. Cloth is made from fibres. |
| Answer» <p>Yarn isproducedby spinning rawfibresof wool, flax, cotton, hemp, or other materials to produce long strands. Textiles are formed by weaving, knitting, crocheting, knotting, felting, or braiding. Clothmay be used synonymously withfabricbut is often a piece offabricthat has been processed.</p> | |
| 614. |
Consider a head-on collision between two particles omasses m, and m.. The initial speeds of the particlesare u and uz in the same direction. The collision startsat t-0 and the particles interact for a time interval AtDuring the collision, the speed of the first particle 4varies asFind the speed of the second particle as a function oftime during the collision. |
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| 615. |
what is ultimate Sown of energen |
| Answer» <p>sun is the ultimate sourceof light and energy</p> <p>sun is the right answer</p> <p> sun is the ultimate source of light and energy .is the correct answer of the given question</p> <p>sun is ultimate source of energy </p> | |
| 616. |
1. How is soil prepared before the seed is sown in it? |
| Answer» <p>first ploughing is done</p> <p>soil preparation is the first step to be followed when we start the agricultural process. It usually entails the loosening up of the top layer of soil i.e. topsoil. Plants absorb water and nutrients from the soil through their roots, hence it is essential to prepare the soil, so we can have a healthy and bountiful produce.</p><p>The soil is prepared by the following methods</p><p>Ploughing</p><p>Levelling</p><p>Manuring</p> <p> Tilling , harvesting , farming are the methods which farmer does before the seed is sown in soil .</p> <p>soil preparation mainly involve ploughing ; levelling; tilling and sowing</p> <p>Thesoil is prepared before sowingtheseeds. Thesoil isloosened to increase the absorption of water and manures. Loosening ofsoilparticles adds humus and nutrients to thesoilthat increases crop yields. Tilling or loosening thesoil isdone by ploughs which are pulled by a pair of bulls.</p><p>Please like my answer.</p> <p>the first and final steps is soil preparations </p> | |
| 617. |
If wheat is sown in the kharif season, what would happen? Discuss. |
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| 618. |
example of non lustrous |
| Answer» <p>WOOD,PAPER,PLASTIC SHEET,AND OTHER ARE EXAMPLE OF NON LUSTROUS SUBSTANCE .Non lustrous substancesare that which do not shine or glow</p> | |
| 619. |
Explain how soil gets affected by the continuous plantation of crops ina field. |
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| 620. |
formula of Work and example. unit ,mks and si |
| Answer» <p>SIunit joule(J)</p><p>Other units</p><p>Foot-pound,ErgInSIbase units1kg⋅m2⋅s−2</p><p>Derivations fromother quantities</p><p>W=F⋅sW=τθDimensionML2T−2For example, when a ball is held above the ground and then dropped, the work done on the ball as it falls is equal to the weight of the ball (a force) multiplied by the distance to the ground (a displacement).</p> | |
| 621. |
Briefly describe the eight planets and their satellites. |
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| 622. |
which year Orissa convert to odisha |
| Answer» <p>Orissa'snew name isOdisha.Orissawill hereafter be called 'Odisha' and the Oriya language will be known as 'Odia' with Parliament giving approval to amendment of the Constitution and also passing the related bill.this happened in 2011</p> <p>date</p> <p> its in March 2011</p> <p>exact date bolo</p> <p>what is the exact date</p> <p>in which year Bhubaneswar is capital of Odisha ?</p> | |
| 623. |
Table 2.1 Various modes of feedingName of Kind of Mode ofanimalfood feedingSnail000AntSuarEagleSnakesKlumming bird NectaLiceBloodMosquitoBlaadButterflyHouse fly Gardaseinhoning capturing |
| Answer» <p>1. scraping2. chewing3. capturing and swallowing4. sucking5. sucking6. sucking7. siphoning8. siphoning</p> <p>1 scraping2 chewing3 swallowing4 sucking5 sucking6 sucking7 siphoning8 siphoning</p> | |
| 624. |
Example 4.25 The half-life period of the decompositionof a compound is 20 minutes. If the initial concentrationis doubled, the half-life period is reduced to 10 minutes.What is the order of the reaction? |
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| 625. |
fa gaseous substance A is introduced into an initially evacuated flask at 25°C, the pressure is tound doen added to it at the same temperature and pressure. The final pressure1 atm. 3 g ofanothes found to be 1.5 atm. Assuming ideal gas behavior, calculate the ratio of molecular weights of A and B.r substance B is th |
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| 626. |
When initial concentration of the reactant isdoubled, the half-life period of a zero orderreaction(1) remains unchanged(2) is halved(3) is tripled(4) is doubled |
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| 627. |
2. What is heterotrophic nutrition? What are the different types of heterotrophic nutrition found inplants? Define and explain each giving examples. |
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| 628. |
1. Which tissue lies near the bark-xylem or phloem? What does it do? |
| Answer» <p>Barkis usually thinner than the woody part of the stem or root. </p><p>Both innerbark(secondaryphloem) and wood (secondaryxylem) are generated by the vascular cambium layer of cells:barktoward the outside where the oldest layers may slough off, and wood toward the inside where it accumulates as dead tissue.</p> | |
| 629. |
What do you mean by valence,conduction and forbidden bands? |
| Answer» <p>In insulators theelectronsin thevalence bandare separated by a largegapfrom theconduction band, in conductors like metals thevalence bandoverlaps theconduction band, and in semiconductors there is a small enoughgapbetween thevalenceandconduction bandsthat thermal or other excitations can bridge thegap.</p> | |
| 630. |
You have two metallic wires of resistance 3 Ω. How will you connect these wires to get theeffective resistance of 2 Ω? |
| Answer» <p>I think the question is incorrect.Neither series nor parallel combination will give 2 ohm</p> <p>2 ohm is possible when one of them is 6 ohm and the other of 3 ohm.</p> | |
| 631. |
What was the real name of Guru Nanak? |
| Answer» <p>Guru Nanak was born on 29 November 1469 at Rāi Bhoi Kī Talvaṇḍī (present day Nankana Sahib, Punjab, Pakistan) near Lahore. His parents were Kalyan Chand Das Bedi, popularly shortened to Mehta Kalu, and Mata Tripta. </p><p>Like my answer if you find it useful!</p> <p>jbg</p> | |
| 632. |
TWO DIFFERENT (iquiels NAvISAME MASS ANE MIxEDThin EATH E RÄ°TE THEIR DONS1TTES |
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| 633. |
oose the corrĂŠct option.Which one of these is a mechanical process of treating wastewater?(a)(c)Screening of wastesDisinfecting water(b) Digestion of wastes(d) of these |
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| 634. |
Q: It was Sunday on Jan 1, 2006. What was the day of the week Jan 1,2010?A) MondayB) FridaySundayD) TuesdayView AnswerWerkstateReport ErrorDiscuss |
| Answer» <p>Friday is correct answer</p> | |
| 635. |
who many state in India |
| Answer» <p>There are 29 states and 7 union territories in India</p> | |
| 636. |
nswer the following questions in brlelWhat is adaptation?What are the characteristics of living thWhat is the difference between terrestWhat is the basic function of the rootsswer the following questions in detail |
| Answer» <p>1)the process of change by which an organism or species becomes better suited to its environment.4) The root is the part of a plant that is usually found underground but can also be above ground. Roots' jobs are: To absorb or take in water and minerals from the ground. Toholdthe plant in place</p> <p>Here is the list of characteristics shared by living things:</p><p>Cellularorganization.</p><p>Reproduction.</p><p>Metabolism.</p><p>Homeostasis.</p><p>Heredity.</p><p>Response to stimuli.</p><p>Growthanddevelopment.</p> | |
| 637. |
-Questions-1) In how many days/period does plastic gets disposed? |
| Answer» <p>Normally, it takes 2-6 weeksforlandfills togetcompletelydecomposed.</p> | |
| 638. |
onaonervedGastinc sphincterAnal Sphinctez |
| Answer» <p>1) Gastric sphincter is present at the junction of the small intestines and the stomach. It acts as a valve and controls the amount of food that is being transferred. 2.The anal sphincter is responsible for the removal of the food. Anal sphincter is of two types, internal sphincter and external sphincter</p> | |
| 639. |
1. HUW IS Tayon made! Why is it ditand explain four properties of plastics. Give one use of plastics linked to each of theproperties.111 |
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| 640. |
1. TUW IS TV hade! WHY IS IC Calle ar SIIN! LILI2. List and explain four properties of plastics. Give one use of plastics linked to each of theseproperties. |
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| 641. |
What are the different kinds of wastes that get generated? |
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| 642. |
define friction give some example |
| Answer» <p>To stop a moving object, a force must act in the opposite direction to the direction of motion. For instance, if you push your book across your desk, the book will move. The force of the push moves the book. As the book slides across the desk, it slows down and stops moving. The force that opposes the motion of an object is calledfriction. Rubbing both hands together to create heat. A sled sliding across snow or ice. Skis sliding against snow. A person sliding down a slide isan exampleof slidingfriction.</p> | |
| 643. |
. Write short note on pon Junction. |
| Answer» <p>semiconductor in Figurebelow(a), the result is of no value. We have two conductive blocks in contact with each other, showing no unique properties. The problem is two separate and distinct crystal bodies. The number of electrons is balanced by the number of protons in both blocks. Thus, neither block has any net charge.</p><p>However, a single semiconductor crystal manufactured with P-type material at one end and N-type material at the other in Figurebelow(b) has some unique properties. The P-type material has positive majority charge carriers, holes, which are free to move about the crystal lattice. The N-type material has mobile negative majority carriers, electrons. Near the junction, the N-type material electrons diffuse across the junction, combining with holes in P-type material. The region of the P-type material near the junction takes on a net negative charge because of the electrons attracted. Since electrons departed the N-type region, it takes on a localized positive charge. The thin layer of the crystal lattice between these charges has been depleted of majority carriers, thus, is known as thedepletion region. It becomes nonconductiveintrinsic semiconductormaterial. In effect, we have nearly an insulator separating the conductive P and N doped regions.</p> <p>p type n type suitabely joined then it make pn junction</p> | |
| 644. |
It is not advisable to sleep in a closed room with a coal-fired fire place. |
| Answer» <p>in a closed room, the burning fire can consume oxygen and givee out carbon monoxide..</p><p>carbon monoxide gas is produced due to incomplete burning of coal in sufficient air</p><p>Carbon monoxide is known as the silent killer since it has no color,no odour and no taste.</p><p>unfortunately Carbon monoxide has more affinity to combine with haemoglobin rather than oxygen....</p><p>on combining with carbon monoxide, haemoglobin of the blood forms carboxy-haemoglobin which is then never restored to the vital haemoglobin., so the oxygen carrying capacity of blood gradually decreases...</p><p>As a result of the formation of carboxy-haemoglobin, respiration gradually slows down and production of energy stops...</p><p>if brain cells did nt receive oxyygen till 3 min they strt dying leading to setting in of paralysis and eventually death...</p> | |
| 645. |
) It is not advisable to sleep in a closed room with a coal-fired fire place. |
| Answer» <p>in a closed room, the burning fire can consume oxygen and givee out carbon monoxide..</p><p>carbon monoxide gas is produced due to incomplete burning of coal in sufficient air</p><p>Carbon monoxide is known as the silent killer since it has no color,no odour and no taste.</p><p>unfortunately Carbon monoxide has more affinity to combine with haemoglobin rather than oxygen....</p><p>on combining with carbon monoxide, haemoglobin of the blood forms carboxy-haemoglobin which is then never restored to the vital haemoglobin., so the oxygen carrying capacity of blood gradually decreases...</p><p>As a result of the formation of carboxy-haemoglobin, respiration gradually slows down and production of energy stops...</p><p>if brain cells did nt receive oxyygen till 3 min they start dying leading to setting in of paralysis and eventually death...</p> <p>thanks</p> | |
| 646. |
Q.13) Differentiate between Anode & Cathodeni whatare the drawbacks of Rutherford'smodel of atom? |
| Answer» <p>Difference Between Anodeand Cathode.Anodeandcathodeare two terms that are often used interchangeably with positive and negative in batteries. ... Theanode, by definition, is the electrode where electricity flows into. In contrast, the cathodeis the electrode where the electricity flows out of.</p> | |
| 647. |
LONG-IDitferentitiate between renewable and non-renewable resources, giving two examples of each. 221 |
| Answer» <p>non renewable resources send forget</p> <p>what is the meaning of ubiquitous resources</p> | |
| 648. |
3. A scientist determines themolecular mass of a substanceexperimentally by colligativeproperties. But it is differentfrom those calculated from themolecular formulae.(i) What may be the reason for thisabnormal result?(ii) Explain your reason.(2) |
| Answer» <p>due to association or dissociation of the particles there may be some abnormal change in the molar mass of the substance.Such a molar mass, whose value is higher or lower than its expected value is known asAbnormal Molar Mass.For Example, weak electrolytes dissociate in water to form ions, example Hydrofluoric Acid (HF), dissociate into hydrogen cation and fluorine anion.</p> | |
| 649. |
.A compound of X and Y has equal mass of thenIf their atomic weights are 30 and 20 respectiveMolecular formula of that compound(2) X,Y3(4) XY(3) XY13. |
| Answer» <p>both the compound zn and Ca have valency 2, so theit molecular formula will be X2Y2 </p> <p>wrong ans.</p> <p>what is the answer then??</p> <p>x2y3</p> <p>Given the compounds have equal mass of them in a formulasuppose the mass is M so , no. of moles for X = M/30and for Y = M/20</p><p>so x/y = 2/3 </p><p> from above the molecular formula will be X2Y3</p> | |
| 650. |
9)a the thin^ layer, db, gases sep |
| Answer» <p>2) Earth's atmosphere is a thin layer of gases separating earth from outer spaces.</p> | |