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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.
| 1801. |
Why we laugh when somebody touch us |
| Answer» <p>When you're touched, the nerve endings under your top layer of skin, or epidermis, send electrical signals to the brain. When we are tickled the somatosensory cortex picks up the signals to do with pressure, but the anterior cingulated cortex also analyses the signals. This part of the brain governs pleasurable feelings.</p><p>Evolutionary biologists and neuroscientists believe that we laugh when we are tickled because the part of the brain that tells us to laugh when we experience a light touch, the hypothalamus, is also the same part that tells us to expect a painful sensation. Laughing when tickled in our sensitive spots (under the arms, near the throat and under our feet) could be a defensive mechanism. Research suggests that we have evolved to send this signal out to show our submission to an aggressor, to dispel a tense situation and prevent us from getting hurt.</p><p>Please hit the like button below if this helped you</p> | |
| 1802. |
A ray of light is incident on the surface of a glassplate of refractive index 1.55 at the polarisingangle. The angle of refraction is:(A) 32° 49(B) 35° 16' |
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| 1803. |
MM-25Subject-ChemistrynausFor a reaction both AH and swhat conditionsspontaneously?For a reaction both ΔΗ and ASAH and AS are positive underdoes the reaction occurOus does the reaction occurspontaneously ?nothermal and an |
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| 1804. |
. Find 9th term of A.P. 7, 11, 15, 19, |
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| 1805. |
Name the two kinds of motion that the earth has? |
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| 1806. |
Q. 1. How many kinds of teeth do you find? |
| Answer» <p>there are 4 types of teeth incisors canines molarpremolar</p> <p>There are four kinds of teeth:1.molar2.premolar3.incisor4.canine</p> <p>There are four kinds of teeth.</p> | |
| 1807. |
Wildlife sanctuary and biosphere reserv |
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| 1808. |
9. A converging mirror forms a real image of height 4 cm of an object of height lem placed 20cmaway from the mirror: [3]a) Calculate the image distanceb) What is the focal length of the mirror? |
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| 1809. |
6. साधारण ब्याज की किस दर से 750 रु. का 5 वर्ष में मिश्रधन।900 हो जाएगा- |
| Answer» <p>Let the rate be R then900=(750*R*5)÷100The R=90000÷3750</p> | |
| 1810. |
n be experienced only during the tiOd breeze can be experiencedoD. Match the following:Column A1. WindGentle wind3. Very strong wind4. Strong wind5. Storm with lightning and thunderColumn Ba) Breezeb) Moving airc) Galed) Thunder storme) Storm |
| Answer» <p>1wind- moving air2gentle wind- breeze3very strong wind- storm4strong wind- gale5storm with lightening and thunder-thunderstorm</p> <p>what is skulland write short note</p> <p>5>storm with lightning and thunder-----thunder storm4>strong wind-----gale3>very strong wind-----storm 2>gentle Wind----breeze1>wind------ moving ait</p> <p>1-b2-a3-c4-e5-dis the correct answer</p> <p>1b2a3c4e5dyour answet</p> <p>1wind = moving air. 2gentle wind = Gale. 3 very strong wind = breeze. 4strong wind = storm. 5 storm with lightning and thunder = thunder storm</p> <p>1Wind_ moving air 2genntle wind _ breeze3 storm4 gale5thunderstorm</p> <p>1/b(2/a) 3/e (4/c) 5/d</p> <p>1. wind ---moving air2. gentle wind -- breeze3.very strong wind. -storm4.strong wind. -- gales5.thunderstorm with lightening and thunder - thunderstorms</p> <p>1wind. moving air2 gentle wind .breeze3 strong wind.storm4strong wind.gale5 strome thunder.thunder storm</p> <p>1 B 2 A 3 E 4 C 5 D</p> <p>wind _ moving air gentle wind _breeze very strong wind _stormstrong wind _gale </p> <p>wind - moving sirgentle wind - breezevery strong wind - stormstrong wind - galestorm with lightening and thunder - thunderstorm</p> <p>1 b2 a3 e4 c5 d</p> | |
| 1811. |
Give reasons for the following:Alchemy was considered a pseudoscience |
| Answer» <p>Pseudoscienceis a claim, belief, or practice which is presented as scientific, but does not adhere to a valid scientific method, lacks supporting evidence or plausibility, cannot be reliably tested, or otherwise lacks scientific status.Alchemyin ancient times became what is known as chemistry in modern times.</p> | |
| 1812. |
3. What does oxygen do inside our body? |
| Answer» <p>One critical role that oxygen plays in the body is that it is used to oxidize our food, in the process of cellular respiration, thus releasing energy, which is eventually stored in ATP in the electron transport chain in mitochondria, and in glycolysis in the cytoplasm.</p><p>Carbohydrates and fatty acids are gradually broken down to simpler carbohydrates, and then oxidized in our cells ... producing energy, carbon dioxide, and water.</p><p>It's basically a highly controlled process of burning our food that gives us the energy we need to live.</p><p>Another critical purpose oxygen plays is that it is part of the water molecule: cells are about 70-90% water by mass, and without water and its ability to form hydrogen bonds life would likely not be possible at all.</p><p>So in fact, because of the very high water content, the human body is mostly oxygen, by mass. You can be assured that it plays many, many important roles in the body, not just one.</p><p>Of course oxygen, in the form of O2, has many effects on the body - it is highly reactive, and so it has to be carefully handled to avoid tissue damage, especially from the more reactive oxygen species that sometimes result from metabolic processes.</p> | |
| 1813. |
86. Who discovered the Malaria parasite?(a) Ronald Ross (b) Rutherford (c) Louis Pasteur (d) J.Baired.87. A scientist dicovered the structure of benzene in a dream.Can you name the scientist?(a) Anaximander (b) Herophils (c) August Kekule(d) Amundson.88. Who discovered anti-toxin injections for Diphtheria ?(a) Marice Curie (b) E.A. Behring (c) John Larson (d) All ofthe above.89. Which physicist discovered artificial radio-activity(a) Frederick Joliot -Curie (b) Joseph W.Swan (c) John Wells(d) Roslyn D. Young. (e) Frank F. Jewett.90. Who discovered the Laws of Gravitation ?(a) Joseph W. Swan (b) John Wells (c) Frank F. Jewet(d) Sir Isaac Newton.91. Who discovered the Laws of Floating Bodies ?(a) 'ohn Herschel (b) William Herschel (c) Archimedes(d) Amundson.92. Who discovered J- receptor- the nerve terminals in lungwhich cause breathlessness? |
| Answer» <p>Laveran</p><p>Laveranwas awarded the 1907 Nobel Prize for Physiology or Medicine "in recognition of his work on the role played by protozoa in causing diseases". Dutch physician Pieter Pel first proposed a tissue stage of the malaria parasite in 1886, presaging its discovery by over 50 years.</p> | |
| 1814. |
Give examples of different acids. |
| Answer» <p>thank you so much </p> <p>hydrochloric acid, lactic acid, acetic acid, critic acid, olice acid, </p> <p>(1) . H2SO4, HCl ,NH3O4 etc..</p> <p>Acid, any substance that inwatersolutiontastes sour, changes the colour of certain indicators (e.g., reddens bluelitmuspaper), reacts with somemetals(e.g.,iron) to liberatehydrogen, reacts withbasesto formsalts, and promotes certainchemical reactions(acid catalysis). Examples of acids include the inorganic substances known as the mineral acids—sulfuric, nitric, hydrochloric, and phosphoric acids—and the organiccompoundsbelonging to thecarboxylic acid,sulfonic acid, andphenolgroups. Such substances contain one or more hydrogenatomsthat, in solution, are released as positively charged hydrogen ions (seeArrhenius theory).</p> | |
| 1815. |
ORWhat is an homologous series? Explain with an example? |
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| 1816. |
3. Name the five sense organs. |
| Answer» <p>eyeearnosemouthtongue</p> | |
| 1817. |
Leaves of Mosses and Ferns are(1) Analogous and homologous both(3) Homologous but not analogous(2) Analogous but not homologous(4) of the above |
| Answer» <p>the leaves of mosses and ferns are analogus but not homologous</p> | |
| 1818. |
from a hemi-sphere. Find the ratio of the radius ofthe hemi-sphere to that of cone.a) 1:3b) 4:1c) 1:4d) 1:2 |
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| 1819. |
\G/प्रश्न 6. यदि ६8.0 * (डे) न औ, तो 510: 3 A W SR W2018 DW) |
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| 1820. |
Solve the following simultaneous(1) 3a + 5b = 26; a + 5b = 2(3)-2x - 3y = 9; 2x + y = 13(5) 5x + 2y = -3; x + 5y = 4(27 99x + 101y = 499; 101x +(8) 49x - 57y = 172; 57x - 4Graph of a linear equation in tuIn the 9th standard we learntriables is a straight line. The or |
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| 1821. |
Pat is launc. |
| Answer» <p>Science is defined as the observation, identification, description, experimental investigation, and theoretical explanation of natural phenomena.</p> <p>Science is the study of the natural world through observation and experiment.</p> | |
| 1822. |
Ocean uwater i salty and is unfit Jorrhuman consumptieh.H4Ď do you thinkswater mat we use |
| Answer» <p>Water vapour does not carry away the salt with it. Water vapours so formed become a part of the air and cannot usually be seen.During the daytime all the air surrounding us gets heated. This warm air provides heat for evaporation of water in the shade. Thus, evaporation takes place from all opensurfaces of water. As a result, water vapour gets continuously added to the air.</p> | |
| 1823. |
cisors(b) canines(c) premolwould you distinguish between ice and ice-creamthe various functions of the tongue ? Name four diffwe survive only on grass and raw leafy vegetablesh parts of the tongue detect the following tastes?tter (b) Sweet (c) Sour (d) SaltyWer Type Questionsis meant by digestion ? Name the various orgariated glands. Draw a labelled diagram of the hunis meant by tooth decay ? Name some of the fooe various ways of preventing tooth decay ?D9be with the help of labelled diagrams, how feed |
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| 1824. |
11 What is Crystallisation?64 |
| Answer» <p>Crystallization is the process by which a chemical is converted from a liquid into a solid crystalline state.Crystallization is also a chemical solid–liquid separation technique, in which mass transfer of a solute from the liquid solution to a pure solid crystalline phase occurs</p> <p>pls give an easy answer</p> <p>Crystallization is the solidification of atoms or molecules into a highly structured form called a crystal.</p> | |
| 1825. |
6.a. Define crystallisation |
| Answer» <p>Crystallization is the process by which a solid forms, where the atoms or molecules are highly organized into a structure known as a crystal. Some of the ways by which crystals form are precipitating from a solution, freezing, or more rarely deposition directly from a gas</p> | |
| 1826. |
What do you understand by the focus of a lens? How will you find the focus of a convex lens? |
| Answer» <p>focal point. n. 1 (Also called) principalfocus,focusthe point on the axis of alensor mirror to which parallel rays of light converge or from which they appear to diverge after refraction or reflection</p><p>Convex lensesare thicker at the middle. Rays of light that pass through thelensare brought closer together (they converge). Aconvex lensis a converginglens. When parallel rays of light pass through aconvex lensthe refracted rays converge at one point called the principalfocus.</p> | |
| 1827. |
\left. \begin{array} { l } { x - 3 y - 3 = 0 } \\ { 3 x - 9 y - 2 = 0 } \end{array} \right. |
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| 1828. |
Q-13)What is the action of acidified kmno4 on 1) H2S2) |
| Answer» <p>It’ll be oxidised to elemental sulphur or sulphate anions depending on the pH of the solution. Particulate sulphur is created if the solution is acidic or neutral, whilst alkaline solutions lead to K2SO4. Manganese dioxide, water and potassium hydroxide are the other end products in each case.</p><p>2KMnO4+ 3H2S → 2MnO2 + 3S + 2KOH + 2H2O (acid or neutral solution)</p> | |
| 1829. |
The date of Final Written Examination for recruitment to the post of Constable inWest Bengal Police - 2018 has been scheduled on 30.06.2019 (Sunday) from 12:00Noon to 1 PM. The e-Admit Cards will be available on the website of WestBengal Police (www.wbpolice.gov.in) from 17.06.2019 on keying of ApplicationSl. No. & Date of Birth. All efforts will be made to deliver SMS alert to theregistered Mobile Number of the candidates. However, the Board will not beresponsible for non-delivery of such SMS. The candidates shall have toproduce the printout of their e-Admit Cards at the allotted venues for appearing |
| Answer» <p>it is miysyry it is not scienci it is sst</p> | |
| 1830. |
plating with examplesWith respect to electrorefining s(a) Which object(b) Name the electrolyte used.C(c) What is used as the cathode?hof copper, answer the following questions.is used as the anode?De |
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| 1831. |
What are the two holes in nose called |
| Answer» <p>Nostrils is the correct answer.</p> | |
| 1832. |
what is kinetic energy?Also say its unit. |
| Answer» <p>Kinetic energy is directly proportional to the mass of the object and to the square of its velocity:K.E. = 1/2 m v2. If the mass has units of kilograms and the velocity of meters per second, the kinetic energy has units of kilograms-meters squared per second squared. Kinetic energy is usually measured in units of Joules (J); one Joule is equal to 1 kg m2/ s2.</p> | |
| 1833. |
(1) In the adjoining figure, AP 2 units, AQ-3 units, PB 6 units, QC-9 units,Show that BC- 4PQ |
| Answer» <p>since PQ intersects the sides AB and AC in equal ratios.</p><p>therefore PQ is parallel to BC.</p><p>now the triangles APQ and ABC are similar triangles.</p><p>therefore the ratios of the corresponding sides are equal.</p> | |
| 1834. |
1. Name different levels of organisation beloworganism level. |
| Answer» <p>The biological levels of organization of living things arranged from the simplest to most complex are:organelle, cells,tissues, organs, organ systems, organisms,populations,communities,ecosystem, andbiosphere.</p> | |
| 1835. |
euse tl its kinetic energy3. What is potential energy? If an ideal spring has a spring constant kthen derive the formula torpotential energy stored in the spring if it is compressed by a distance x from its mean position. |
| Answer» <p>It is the energy possessed by a body by virtue of its position relative to others, stresses within itself, electric charge, and other factors.</p> | |
| 1836. |
Part 3 Directions: Order the lengths from least to great316.20 m 200 cm 2 km 20 mm17. 750 mm 7 km 40 cm Im |
| Answer» <p>16.th answer =20mm,200cm,20m,2km17.th answer=40cm,750mm,1m,7km </p> <p>(1) 20mm,200cm,20m,2km(2)750mm,40cm,1m,7cm</p> | |
| 1837. |
Do all the stars in the sky move? Explain. |
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| 1838. |
2. A man walks on a straight road from his home to a market 3 km away with a speedn/h. The time, taken by the man to go from his home to market, equals18 minutes40 minutes130 minutes50 minutes |
| Answer» <p>Hw completed 6 km in one hour</p><p>So, he takes 30 minutes to walk 3 km</p> | |
| 1839. |
who. is the present Uno secretary general |
| Answer» <p>António Guterres is the present General Secretary of UNO( United Nations Organisation)</p> | |
| 1840. |
7. With the help of a labelled diagam, trace and explain the path of blood circclled diagiam, trace and explain the path of blood circulation in thehuman body. |
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| 1841. |
Q.16Why do stars twinkle? |
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| 1842. |
(a) Name a trace gas of the atmosphere. |
| Answer» <p>the trace gas is carbon dioxide</p> | |
| 1843. |
, write Îą note on lielihood of forest tribes of our state. |
| Answer» <p>Ans :- Earlier adivasis lived a nomadic lifestyle as a hunter gatherer . tribal societies today primarily depend on agriculture . they practice shifting cultivation. the land is jointly owned by the members of the tribe for cultivation. depend upon forest produce for their livelihood. tribals are also pastoralists. some tribals are skilled craftsmen. </p> | |
| 1844. |
(d) How does a farmer treat the soil that is too acidic? |
| Answer» <p>The most common way to raise the pH ofsoil is toaddpulverized limestone to thesoil. Limestone acts as asoil acidneutralizer and consists of either calcium and magnesium carbonate or calcium carbonate. These are called dolomitic limestone and calcitic limestone respectively. This is what farmers do to decrease soil acidity.</p> | |
| 1845. |
-Questions-1)Explain relation between resistance and current. |
| Answer» <p>Ohm's law defines the relationship between the voltage, current, and resistance in an electric circuit: i = v/r. The current is directly proportional to the voltage and inversely proportional to the resistance.</p> | |
| 1846. |
7. Acacia is found in:a. Mountainsc. Grasslandsb. Desertd. Water |
| Answer» <p>b. Accacia is found in Desert </p> | |
| 1847. |
2. What is vaccination? Why is it important? |
| Answer» <p>Ans :- Vaccination is the administration of antigenic material to stimulate an individual's immune system to develop adaptive immunity to a pathogen. Vaccines can prevent or ameliorate infectious disease. When a sufficiently large percentage of a population has been vaccinated, herd immunity results.</p><p>Immunisation saves lives. It protects you, your family and your community. And it also helps protect future generations by eradicating diseases.</p> <p>Ans-Vaccinationprotects children from serious illness and complications ofvaccine-preventable diseases which can include amputation of an arm or leg, paralysis of limbs, hearing loss, convulsions, brain damage, and death.Vaccine-preventable diseases, such as measles, mumps, and whooping cough, are still a threat.👍</p> | |
| 1848. |
5 Differentiate betweenDesert and forest |
| Answer» <p>Deserts are areas that receive an average of less than 12 inches (30 cm) of precipitation, measured on a liquid basis, per year.</p><p>Forests are ecosystems dominated by woody vegetation with the potential to reach atleast 2–5 meters in height.</p><p>Like my answer if you find it useful!</p> | |
| 1849. |
2.3.4.Name the largest desert in the world.Where is the Land of White Elephants?Who invented the revolver? |
| Answer» <p>2. The largest is theSaharaDesert, asubtropicaldesert in northern Africa. It covers a surface area of about 3.5 million square miles.</p><p>3. Thailand</p><p>4. Samuel Colt submitted a British patent for his revolver in 1835</p> | |
| 1850. |
ए.5- निम्नलिखित संख्या श्रेणी में एक संख्या अन्यसंख्याओं की व्यवस्थाओं का अनुसरण नहींकरती। उस संख्या को ज्ञात कीजिए-1,25) 14, 41, 124(A)(B) 124(C) 14(D)41 |
| Answer» <p>2 or 5 anhsarn nahi karti</p> <p>41 anushran nhi krti h</p> <p>124 anusharan nhi krti hai iske jagah pe 122 hona chahiye tha</p> <p>सही उत्तर :—(B) 124तो, यह 124 नहीं होना चाहिए, यहाँ 122 होना चाहिए, ताकि डिटरन्यू 81 हो जाए।</p> <p>2 Or 5 nai krti he ...... </p> <p>5 answer sahi h ye anya sankhyaon ki byawasthon ka anusaran nhi krta</p> <p> the number is 124 because the difference between all no is multiple of 3 but the difference between 41 and 124 is 83 it is not a multiple of3</p> <p>2 or 5 anhsarn Nahi karti</p> <p>B=124 tha answer of qution because difference between number and add 3 squqlare</p> <p>41 nhi kar quki abajay numbes h</p> <p> 2 or 5anusaran nahi karti</p> <p>2 or 5 anusarn nahi karti </p> <p>124 number not muchebul</p> <p>124 संख्याओं की व्यवस्थाओं का अनुसरण नहीं करता क्योंकि 1*3-1=2, 2*3-1=5, 5*3-1=14, 14*3-1=41, 41*3-1=122 होना चाहिए जो नहीं हैं</p> <p>Last one shoud be 122 So, Ans :- 124</p> <p>5 hi hoga sir aur koi nhi hoga</p> <p>2 and 5 answer nhi hoga</p> <p>I think B is right answer</p> <p>124 this question answer</p> <p>124 अनुसरण नहीं करता है क्योंकि ये हर बार तीन से गुना हो रहे हैं</p> <p>2 or 5 anusaran nahi karti</p> <p>Yes Bro This Questions Is Right Answer</p> <p>124 is correct answer</p> <p>41 and 124 are not machted</p> <p>2 Or 5 ans hoga kuki 2 Or 5 anusharan nhi krti h </p> <p>answer - 124 anusaran nhi krti</p> <p>124 अनुसरण नहीं करती</p> <p>A 5 anusaran nahi karti</p> <p>Answer is in the give number is 5.</p> <p>the number is 124 because the difference between all no is multiple of but the difference between 41 and 124 is 83 it is noet a multiple of 3</p> <p>124 nahi hona chahiye 122 hoga</p> <p>124 अनुसरण नहीं करती इसके स्थान पर 122 होना था</p> <p>124 की जगह 122 होना चाहिए क्योंकि इसका सेट सही तरीके से बैठ जाये </p> <p>There must be 122 instead of 124 because in each number 3,9,27,81....so on</p> <p>5 is the right answer</p> <p>124 ke anusar 121 hona chahiye tha</p> <p>2 or 5 anusaran nahi karti hain</p> <p> 2 aur 5 anhsarn nahi karti hain</p> <p>41anushran nahi karti hai</p> <p>2 or5anhsarn Nahi krti</p> <p>41 anusaran nahii karti</p> <p>41 anushtan nhi krti h</p> <p>ankh moond a)5 mar do</p> <p>2 and 5 anhsarn nahi karti</p> <p> the answer of the question is 41</p> <p>124 है को अनुसरण नहीं कर रहा है</p> <p>14 is the right answer my friend</p> <p>B is the right answer</p> <p>124 anushrit nahi karti iski jagah 122 hona chaiye</p> <p>B=124 the answers of question because difference between number and add 3 squqlar </p> <p>1 and 2or5 anhsarn Nahi Karti </p> <p>the number is 124 because the difference between all no is multiple of but the difference between 41 and 124 is 83 it is multiple of3.</p> | |