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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.
| 3701. |
(v)The speed of a tralll is cxp3. A simple pendulum takes 32 s to complete 20 oscillations. What is thetime period of the pendulum?tuein tolres. 4 hours to |
| Answer» <p>Time taken to complete 20 oscillations = 32 sTime taken to complete 1 oscillation = 32/20 s = 1.6 sTime period of a pendulum is time taken by it to complete 1 oscillation.Time period of pendulum is 1.6 seconds.</p> | |
| 3702. |
.What is meant by a simple pendulum? |
| Answer» <p>A pendulum is an object hung from a fixed point that swings back and forth under the action of gravity. When a pendulum is displaced sideways from its resting, equilibrium position, it is subject to a restoring force due to gravity that will accelerate it back toward the equilibrium position. The motion of a simple pendulum is very close to Simple Harmonic Motion (SHM).</p> | |
| 3703. |
, nu oul The distance between his house and the school.. A simple pendulum takes 42 s to complete 24 oscillations. Find out the time period of thependulum. |
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| 3704. |
6.Whatvector must be added to the sum of 2 vectors21-j+ 3 k and 3 i- 2j - 2 k so that the resultantis a unit vector along Z axis1) 5 i-k3) 3 j + 5 k2) -5 i+3 j4)- 3j+2 k |
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| 3705. |
(d) TtWwAnexample of homologous organs isour arm and a dog's fore-leg.our teeth and an elephant's tusks.b)otato and runners of grass.)all of the above |
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| 3706. |
2. An example of homologous organs is(a) our arm and a dog's fore leg(b) our teeth and an elephant's tusks.(c) potato and runners of grass(d) all of the above. |
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| 3707. |
Which hetaiWhat are the advantages of using a solar cooker? |
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| 3708. |
(1) Which appliance uses electrical energy?A. Stove B. Solar cooker C. Tubelight D. Chullah |
| Answer» <p>C. Tube light, Reason :Tube light runs using electrical sources</p> <p>tnx</p> <p>From which book have you taken this question? Please tell us so that we can provide you faster answer.</p> | |
| 3709. |
take a diagram to show how hypermetropla is corrected. The near potnt of ahypermetropic eye is 1 m. What is the power of the lens required to correct thisty hasaand conveniebospitals. industdefect? Assume that the near potnt of the normal eye is 25 em.rarly the oblects placedcloser than |
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| 3710. |
12. Convert the following temperaturesto C:a. 140°Fb. 86°F |
| Answer» <p>tq</p> | |
| 3711. |
ExercisesI. Convert the following temperatures to the celsius scal(a) 293 K(b) 470 K. |
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| 3712. |
Why do athletes need more carbohydrates than a person sitting in office? |
| Answer» <p>atleletes do more physical activities and thier muscles need gulocose to refuel energy and helps them to have less fatigue. therefore carbohydrates helps them to fulfill thier needs</p> | |
| 3713. |
Explain Whittaker's five kingdom system of classification. |
| Answer» <p>Very early on, scientists began grouping the living organisms under different categories. Some biologists classified organisms into plants and animals. Ernst Haeckel, Robert Whittaker, and Carl Woese are some biologists who attempted a broader system of classification. Amongst these, the Five Kingdom Classification proposed by Robert Whittaker stood out and is widely used.</p><p>Whitaker proposed that organisms should be broadly divided into kingdoms, based on certain characters like the structure of the cell, mode of nutrition, the source of nutrition, interrelationship, body organization, and reproduction. According to this system, there are five main kingdoms. They are:</p><p>Kingdom MoneraKingdom ProtistaKingdom FungiKingdom AnimaliaKingdom Plantae</p><p>Kingdoms are divided into subgroups at various levels. The following flowchart shows the hierarchy of classification.</p><p>Kingdom → Phylum → Class → Order → Family → Genus → Species</p><p>Distinguishing Features of the Five KingdomsKingdom MoneraThese organisms are prokaryotic and unicellular. They do not have a well-defined nucleus and also lack cell organelles. Some organisms show the presence of cell wall while there are others without a cell wall. Consequently, some organisms are autotrophic and others are heterotrophic. Examples include Bacteria, Cyanobacteria, and Mycoplasma.</p><p>Kingdom ProtistaOrganisms grouped under Kingdom Protista are all unicellular, but eukaryotic organisms. These are the simplest forms of eukaryotes that exhibit either autotrophic or heterotrophic mode of nutrition. Some organisms have appendages such as cilia or flagella or pseudopodia to move around. Some examples are Diatoms, Protozoans like Amoeba, Paramoecium</p><p>Kingdom FungiHeterotrophic, Multicellular and Eukaryotic organisms are grouped under Kingdom Fungi. Their mode of nutrition is saprophytic as they use decaying organic matter as food. They have cell walls, which are made up of a substance called Chitin. Fungi also form a symbiotic association with some blue-green algae. Yeast, Mushroom, Aspergillus are examples of Fungi.</p><p>Kingdom PlantaeThese are Eukaryotic, Multicellular organisms with a cell wall that is made up of cellulose. They are autotrophs and synthesize their own food through the process of photosynthesis. This kingdom includes all plants.</p><p>Based on the body differentiation and presence or absence of specialized vascular tissue, Kingdom Plantae is divided into different divisions, namely Thallophyta, Bryophyta, Pteridophyta, Gymnosperms, and Angiosperms. Examples are Spirogyra, Ferns, Pines, and Mango Plant etc.</p><p>Kingdom AnimaliaThis Kingdom includes organisms that are Multicellular, Eukaryotic, without the presence of cell wall. They have a heterotrophic mode of nutrition. They also exhibit great diversity. Some organisms are simple while others have a complex body with specialized tissue differentiation and body organs.</p><p>The Animal Kingdom is divided into many phyla and classes. Some of the phyla are Porifera, Coelenterata, Arthropoda, Echinodermata, Chordata etc. Examples – Hydra, Starfish, Earthworms, Monkeys, Birds etc.</p> | |
| 3714. |
Name at least five types of fibres and discuss their sources and uses. |
| Answer» <p>1.Vegetable fibers are generally based on arrangements of cellulose, often with lignin used in jute industry2. wood fiber from tree sources used for making paper3. animal fibers mostly from silk worm, sea silk, spider silk used to make clothes4. mineral fibers example asbestos5. biological fibers known as protein fibers like collagen, actin,myosin for muscle contraction</p> | |
| 3715. |
9.1 A small candle, 2.5 cm in size is placed at 27 cm in front of a concavemirror of radius of curvature 36 cm. At what distance from the mirrorshould a screen be placed in order to obtain a sharp image? Describethe nature and size of the image. If the candle is moved closer to themirror, how would the screen have to be moved? |
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| 3716. |
Diseases not caused by virus are |
| Answer» <p>Diseases not caused by virus are Many, e.g. Malaria, a heart attack, pneumococcal pneumonia, most STDs (not HIV, not HPV) etc. etc.</p> | |
| 3717. |
List some diseases caused by microorganisms in human beings. |
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| 3718. |
What is it that makes diseases caused by viruses and bacteria hard to treat? |
| Answer» <p>Influenza viruses and others continually change over time, usually by mutation. This change enables the virus to evade the immune system of its host so that people are susceptible to influenza virus infection throughout their lives. Bacteria mutate in the same way and can also become resistant if overtreated with antibiotics.</p> | |
| 3719. |
CIhr: H+ JTS find the value of a the |
| Answer» <p>a^3 + b^3= (a+b)^3 - 3ab (a +b)</p><p>(4 +root 15 +4 - root 15 )^3 -3 ×(4+roor15) × (4-root15)(4+root15 +4- rot15)</p><p>here 1/4 +root 15= 4-root 15</p><p>here (a+b)(a-b)=a^2-b^2</p><p>8^3 - 3(16-15) ×8</p><p>=512-24</p><p>=488</p> <p>488 is the answer of the following</p> | |
| 3720. |
a) 2.0 m, 80 cmc) 1.2 m, 30 cmb) 1.8 m,d) 1.5 m, 50 emWhile testing the wiring installation with MEGGAin toR, the most important precaution to be taken |
| Answer» <p>Megger Safety Precautions1.Use meggers on high-resistance measurementsonly (such as insulation measurements or to check two separate conductors on a cable).2.Never touch the test leads while the handle is being cranked.3.Deenergize and discharge the circuit completely before connecting a megger.4.Disconnect the item being checked from othercircuitry, if possible, before using a megger</p> | |
| 3721. |
Q U E STI O NWhy are human beings who look so different from each otheof size, colour and looks said to belong to the same species?sin t |
| Answer» <p>thanks sir</p> | |
| 3722. |
What is presbyopia ? State its cause. How is it corrected ?Why does the Sun appear reddish early in the morning ? Explain with the helpof a labelled diagram.(a)(b) |
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| 3723. |
If you put the switch on, a lightwill glow, a fan will rotate, an ironbox heats up etc. All thesedifferent functions will beperformed by electricity. How doyou feel about the comforts givenby this great invention to humanbeings? |
| Answer» <p>Really electronic devices makes our life comfortable. I think we must always remember grat personalities who created such devices and never misuse it.PLZ LIKE MY ANS</p> <p>What we get we should be happy and we are.Thanks to those who made it possible and made our lives comfortable.</p> | |
| 3724. |
2.The skeletons of different human beings are different.The vertebral column is made3. |
| Answer» <p>2.The skeleton of different human beings are different ( T)</p> <p>the answer is true.. .. </p> <p>True is correct answer.</p> <p>2. The skeleton of different human beings are different. ans. This statement is correct. </p> | |
| 3725. |
Q.1 The molality of pure wateris(a) 1(b) 18(c) 55.55(d) 0.0555 |
| Answer» <p>A litre of water contains 1000/18 moles of water 55.56 moles. Molality is defined as moles of solute added to 1 kg of water which would not really mean much in this context. The solute and solvent are the same thing.Option (C) </p> | |
| 3726. |
Define integumentary system. |
| Answer» <p>The integumentary system comprises the skin and its appendages acting to protect the body from various kinds of damage, such as loss of water or abrasion from outside. The integumentary system includes hair, scales, feathers, hooves, and nails.</p> | |
| 3727. |
ctuhutophs5. Write a short note on 'adaptations in desert animals |
| Answer» <p>Adaptations in desert animals -:Animals excete solid urine and faeces , possess spiny skin and highly cornified skin, they come out during the night or early morning for fedding purposes to prevent loss of water and the scorching heat of the desert.</p> | |
| 3728. |
what is a stomata |
| Answer» <p>Stomata are small pores present in the leaf. They are surrounded by gaurd cells which help in closening and opening of stomata.Their functions performed by them are as follows-:1)They allow exchange of gases from the surrounding medium.Usually, carbon dioxide is taken up and oxygen is released.2)From stomata,transpiration takes place that is loss of excess water from the aerial parts of the plant.</p> | |
| 3729. |
what is software |
| Answer» <p>the programs and other operating information used by a computer.</p> | |
| 3730. |
The stomata take in and give out |
| Answer» <p>the stomata take carbon dioxide and give out oxygen.</p> | |
| 3731. |
a. What are communicable diseases? |
| Answer» <p>A communicable disease is one that is spread from one person to another through a variety of ways that includes contact with blood and bodily fluids, breathing, through water exchange</p> <p>communicable diseases are those which spread from infected person to healthy person.</p> | |
| 3732. |
How do communicable diseases spread? |
| Answer» <p>1. Through water2. Physical contact with an infected person.3. Through sneezing4. Sharing same clothes</p> <p>what is means of communication</p> | |
| 3733. |
20.a)state Huygen's principals.b)Using it,construct the reflected wavefront as plane incident wavefront strikes the surface.c)Use this diagram to show that i =4 |
| Answer» <p>Huygens Principle states that(a) Each point on a wavefront becomes a source of secondary disturbance which spreads out in the medium.(b) The position of wavelength at any later instant may be obtained by drawing a forward common envelop to all these secondary wavelets at that instant.(c) In an isotropic medium, theenergycarried by waves is transmitted equally in all directions.(d) If the initial shape, position, the direction of motion and the speed of the wavefront is known, its position at a later instant can be ascertained by geometrical construction. Note that the wavefront does not travel in the backward direction.</p> | |
| 3734. |
What do you mean by political science? |
| Answer» <p>Political science is a social science which deals with systems of governance, and the analysis of political activities, political thoughts, and political behavior. It deals extensively with the theory and practice of politics which is commonly thought of as determining of the distribution of power and resources</p> | |
| 3735. |
difference Between High resolution and high revolution?? |
| Answer» <p>As nouns the difference betweenresolutionandrevolution. is thatresolutionis a strong will, determination whilerevolutionis a political upheaval in a government or nation state characterized by great change.</p> | |
| 3736. |
vapours of X are in equilibrium with ĂThe vapour pressure of water at 80°C is 355 torr. A 100 ml vessel contained water saturated oxygen at80° C, the total gas pressure being 760 torr. The contents of the vessel were pumped into a 50 0 mlvessel at the same temperature Whal were the partial pressures of oxygen and of water vapour andthe total pressure in the final equilibrium state? Neglect the volume of any water which might condenseC-1emperalureoG in eauilibeium with iquid water at a total pressure of 1 |
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| 3737. |
Scope Resolution Operator |
| Answer» <p>Scope resolution operator (::) in C++ programming language is used to define a function outside a class or when we want to use a global variable but also has a local variable with the same name.</p> | |
| 3738. |
27. In the circuit shown below, the voltmeter reads 10 V.2Ω3 52(a) What is the combined resistance ?(b) What current flows?(c) what is the pd. across 2 Ω resistor ?(d) What is the pd. across 3 Ω resistor ? |
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| 3739. |
A water pump raises 50 kg of water through a height of 25 m in 5 s. Calculate the power which the pumpsupplies. (g- 10 ms2)31. |
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| 3740. |
Why is it possible to recharge a car battery? |
| Answer» <p>Yourvehicle'salternator can keep a healthy batterycharged, but it was never designed to completelyrechargea deadcar batteryif the unit in question reads below 12 volts. Using the alternator to deal with such a depleted batterycan actually damage your alternator.</p> | |
| 3741. |
List some industrial uses of metals and non-metals |
| Answer» <p>Uses of Metals are:Chosen for their durability, strength and resistance to weather, metals used in the construction industry serve a wide range of functions. The most common of them are carbon steel, aluminum, copper tubing and stainless steel, which each have their particular qualities and ideal uses.</p><p>Uses of Non-metals are:Non-metallic compounds, such as cement and glass have innumerable uses in modern civilization. Hydrogen is used in the hydrogenation of vegetable oils to make vegetable ghee. It is used in the manufacture of ammonia. Liquid hydrogen is used as a rocket fuel.</p> | |
| 3742. |
CHEMICAL PROPERTIES-OF METALS-. |
| Answer» <p>Ans :- The density of metals is usually high.</p><p>Metalsare malleable and ductile.</p><p>Metals form an alloy with other metals or non – metals.</p><p>Some metals react with air andcorrode. For e.g. Iron.</p><p>Metals are good conductors of heat and electricity.Leadis an exception.</p><p>Generally, metals are in a solid state at room temperature. Except for Mercury. Mercury is in a liquid state.</p><p>Many metals produce metal oxide by burning in the oxygen of the air.Highly reactive metalsreact violently when they’re burnt in oxygen.</p><p>Metals like sodium and potassium are stored in oil as they react with air in seconds. They’re highly reactive metals.</p><p>Less reactive metals like gold, silver, platinum, etc do not tarnish easily. They stay shiny and lustrous.</p><p>Metals produce metal oxide andhydrogengas while reacting with water.</p><p>Soluble metal oxides dissolve in water and create metal hydroxide.</p> | |
| 3743. |
3. Calculate the energy associated with photonr having a wavelength 6000 AJA-6624 x1027 eresee lxample |
| Answer» <p>Frequency (ν) = C/λ (wave length)</p><p>= (3*10^8 meters/sec)/(3000*10^-10 meters)</p><p>= 10^15 sec^-1</p><p>Energy= HV</p><p>= (6.63*10^-34 Joule.Sec). 10^15 sec^-1</p><p>Energy = 6.63*10^-19 Joule</p><p>Here H is regarded as the heat constant while E is known as the energy released.</p> | |
| 3744. |
(e) Why is lightning not seen everydayduring the rainy season? |
| Answer» <p>Usually, rain, thunder, clouds, and lightning come as a package deal which we confusingly call a "thunderstorm." Here is how you brew one. When the sun heats the air close to the surface of the Earth, it rises. As it rises, the air cools — and so does the moisture it holds</p> <p>why is lightning not seen everyday during the rainy season?</p> <p>physical change and chemical change</p> | |
| 3745. |
Howdoeszenerdiode work? |
| Answer» <p> zener diode work in forward bias</p> <p>zener diode is haviely doped therefore it works in reverse bise </p> | |
| 3746. |
140.13 er plaas (2 plass gowing in desectplats och band.mustainsBite three features et indexindex plantsgrowing in plaas. |
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| 3747. |
Name any two hetrosporos pteridophytes |
| Answer» <p>Selaginella, Azolla, Marsilea, Salvinia, Isoetes </p> <p>Homosporous: it is the plant produces only one kind of sporesheterosporous: it is the plant produces two kind of spores .Mainly Macrospore and Microspore.The living species ofHeterosporous pteridophytesare small herbaceous perennials usually not more than a few inches high and fall into six genera namely Azolla, Salvinia, Marsilea, Pilularia, Isoetes, and SelaginellaMost of the pteridophytes are homosporous some of them arePsilotum, Tmesiptris, Lycopodium, Equisetum, phylloglossum.</p> <p>up answer is the correct</p> | |
| 3748. |
2. How are pteridophytes differentfrom the phanerogams? |
| Answer» <p>Ans :- The reproductive organs ofpteridophytes are not very well developed, and they are therefore called cryptogams or those with hidden reproductive organs. On the other hand, plants. with well differentiated reproductive organs that ultimately make seeds are calledphanerogams.</p> <p>thanks</p> <p>thanks</p> | |
| 3749. |
1. Describe the composition of an atom.2. Write any three characteristics of an atom.3. Write the characteristics of a molecule. |
| Answer» <p>1. The atom consists of a tiny nucleus surrounded by moving electrons. The nucleus contains protons, which have a positive charge equal in magnitude to the electron's negative charge. The nucleus also contains neutrons, which have virtually the same mass but no charge.</p> <p>2. An atom is the smallest constituent unit of ordinary matter that has the properties of a chemical element. It is composed of protons, which have a positive charge, and neutrons, which have no charge. Protons, neutrons, and the electrons surrounding them are long-lived particles present in all ordinary, naturally occurring atoms.</p> <p>3. A molecule is an electrically neutral group of two or more atoms held together by chemical bonds.</p> | |
| 3750. |
what are crop. name the two kind of crop |
| Answer» <p>A crop is a plant that is domesticated for the purpose of consumption.</p> <p>The majorcropscan all be divided into four maincategoriesdepending on their usage.</p><p>FoodCrops(Wheat, Maize, Rice, Millets and Pulses etc.)</p><p>CashCrops(Sugarcane, Tobacco, Cotton, Jute and Oilseeds etc.)</p><p>PlantationCrops(Coffee, Coconut, Tea, and Rubber etc.)</p> <p>A crop is a plant that is cultivated or grown on a large scale. Crops are generally grown so they can be commercially traded. i.e any plant that is grown andharvestedextensively for profit purposes. There are two major types of crops that are grown in India.1) Kharif Crops - Rice, maize, bajra, ragi, soybean, groundnut, cotton2)Rabi crops - Wheat, barley, mustard and green peas</p> <p>when plants of the same kind are cultivated at one place on a large scale, it is called a crop. The two type of crops are rabi and Kharif crop. </p> <p>A crop is a plant that is cultivated or grown on a large scale. There are two major types of crops. They are :1. Kharif Crops 2. Rabi Crops </p> | |