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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.
| 551. |
The process of digestion, absorption and utilization of food by the body is calleda) Digestionb) Absorptionc) Assimilationd) Nutrition |
| Answer» <p>The answer is absorptipn</p> <p>The process of digestion, absorption, and utilization of food by the body is called Nutrition.</p> | |
| 552. |
The process of digestion, absorption and utilization of food by the body is calleda) Digestionb) Absorptions) Assimilationd) Nutrition |
| Answer» <p>The processes ofdigestionincludesix activities: ingestion, propulsion, mechanical or physicaldigestion, chemicaldigestion, absorption, and defecation. The first of these processes, ingestion, refers to the entry of food into the alimentary canal through the mouth.</p><p>Hence, option (a) is correct.</p> | |
| 553. |
4 Explain the digestion of chapati in human beings. Drawa diagram depicting human alimentary canal. |
| Answer» <p>Ans :- Chapati is a starch- which is carbohydrate.The digestion of chapati begins in the mouth where salivary amylase acts on the chapati to digest the starch into alpha-dextrin. The alpha-dextrin is then digested to maltose and maltotriose by alpha-dextrinase (a pancreatic enzyme).The digestion of the chapati continues in the stomach and the small intestine, where the enzymes such as maltase, isomaltase, sucrase and lactase digest the dissacharides into its constituent monosaccharide. The monosaccharides from the chapati are then absorbed from the illeum into the blood stream.</p> | |
| 554. |
. Differentiate between alimentary canal and digestive system. |
| Answer» <p>Alimentary Canal is a part ofDigestive system.Alimentary canal is a tube starting from mouth , running upto anus.While Digestive system is combination of Alimentary canal and Digestive Glands.</p><p>Digestive system = Alimentary canal + Digestive Glands</p> <p>Alimentary canal is the passage along which food passes for digestion. It is also known as the gastrointestinal tract and extends from mouth to anus.Alimentary canal includes,pharynx,oesophagus,stomach,small intestine,large intestine,rectum,anus.</p><p>Whereas the Digestive system of man includes the alimentary canal and the digestive glands. The digestive are salivary glands,liver,pancreas,gastric glands,and intestinal glands.</p> | |
| 555. |
CTION (A) KINETIC FRICTIONStarting from rest a body slides down a 45° inclined plane in twice the time it takes to slide osame distance in the absence of friction. The co-efficient of friction between the body and thplane is(A) 0.75own tnede inci(B) 0.33(C) 0.25(D) 0.80 |
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| 556. |
1 Define the fellewing terms I(a) Ingeation(b) Abeorption(e) Digeation(d) Aasimilation(e) Alimentary canal(1) Digestive aystem(g) Enzymes |
| Answer» <p>1.Ingestion: is the consumption of a substance by an organism. In animals, it normally accomplished by taking in the substance through the mouth into the gastrointestinal tract, such as through eating or drinking.</p><p>2. absorption: the process of absorbing something or of being absorbed absorption of water — compare adsorption</p><p>3. The process by which food is broken down into simple chemical compounds that can be absorbed and used as nutrients or eliminated by the body. In most animals, nutrients are obtained from food by the action of digestive enzymes. In humans and other higher vertebrates, digestion takes place mainly in the small intestine.</p><p>4.assimilation: the process of taking in and fully understanding information or ideas, the absorption and digestion of food or nutrients</p> <p>5. the whole passage along which food passes through the body from mouth to anus during digestion.</p><p>6. The system of organs responsible for getting food into and out of the body and for making use of food to keep the body healthy. The digestive system includes the salivary glands, mouth, esophagus, stomach, liver, gallbladder, pancreas, small intestine, colon, and rectum.</p><p>7.Enzymes are proteins that act as catalysts within living cells. Catalysts increase the rate at which chemical reactions occur without being consumed or permanently altered themselves. As a catalyst, an enzyme can facilitate the same chemical reaction over and over again.</p> | |
| 557. |
1. Define the following terms:(a) Ingestion(b) Absorption(c) Digestion(d) Assimilation(e) Alimentary canal(f) Digestive system(g) Enzymes |
| Answer» <p>Ingestion: is the consumption of a substance by an organism. In animals, it normally accomplished by taking in the substance through the mouth into the gastrointestinal tract, such as through eating or drinking.</p><p>Absorptionis the movement of digested food moleculesthrough the wallof the intestine into the blood or lymph.</p><p>Digestionis the breakdown of large insolublefoodmolecules into small water-soluble food molecules so that they can be absorbed into the wateryblood plasma.</p><p>Biologicalassimilation, orbio-assimilation, is the combination of two processes to supplycellswithnutrients. The first is the process of absorption ofvitamins,minerals, and other chemicals fromfoodwithin thegastrointestinal tract. In humans, this is always done with achemical breakdown(enzymesandacids) and physical breakdown (oralmasticationand stomach churning). The second process of bio assimilation is thechemical alterationof substances in thebloodstreamby theliveror cellularsecretions</p> | |
| 558. |
3.Explain various steps of the holozoic nutrition. |
| Answer» <p>Steps involved in holozoic nutrition:Ingestion: The process of taking in the food is called ingestion.Digestion: The process of breaking complex food substances into simple molecules is called digestion. Simple molecules; thus obtained; can be absorbed by the body.Absorption: The process of absorption of digested food is called absorption.Assimilation: The process of utilization of digested food; for energy and for growth and repair is called assimilation.Egestion: The process of removing undigested food from the body is called egestion.</p> | |
| 559. |
Q.1. Copper metal is aa) Good conductor of heat(b) Highly magnetie material(c) Translucent material(d) Ornamental metal |
| Answer» <p>a...It is a soft, malleable, and ductilemetalwith very high thermal and electrical conductivity.</p> <p>sir option</p> <p>option a </p> <p>thanks</p> | |
| 560. |
C. Short answer questions1. Name the five stages involved in the process of nutrition in animals.II. |
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| 561. |
rojectrow fa the VarkbhĂŠ' or sliver foil used inow is the 'Varkha' or sliver foil used insweetsmade? Collect the Onformationbout which metals are used to makearkha |
| Answer» <p>it protect from germ attack on sweets</p> | |
| 562. |
J dtomn23. The energy required to break one mole of Cl-Clbonds in Cl2 is 242 kJ mol. The longest wavelengthof light capable of breaking a single Cl-Cl bond is:(c = 3x108 ms-1 and NA-602 × 1023 mol-1 ) |
| Answer» <p>thank🙏💕</p> | |
| 563. |
1.A ray of light falls normally on a mirror. What are the values of angle of incidence and angle of refraction? |
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| 564. |
(12. A ball of mass 0.2 kg is thrown against a wall. The ballstrikes the wall normally with a velocity of 30 maandrebounds with a velocity of 20 m/s. Calculate theimpulse of the force exerted by the ball on the wall.(a)-11Ns(b) 10Ns(c) 1INS(d) -10Ns |
| Answer» <p>mass=0.2kgvelocity=30 m/srebound velocity =20 m/sfind=force on wall</p><p>we knowf=maf=0.2(30-20)f=2/10(10)f=2</p><p>we knowf=ma</p> | |
| 565. |
A wheel fitted tightly with an rod through its centre is called |
| Answer» <p>A wheel fitted tightly with a rod through its centre is called AXLE</p> <p>ANSWER</p><p>Wheel and Axle</p> | |
| 566. |
14.The algebraic expression for the statementProduct of x and reciprocal of a is subtractedfrom the product of y and reciprocal of bISis\begin{array}{l}{\frac{y}{b}-\frac{x}{a}} \\ {x a-y b}\end{array} \quad(B) \quad \frac{y-x}{a-b} |
| Answer» <p>Thank you</p> | |
| 567. |
what is called hydroelectricity |
| Answer» <p>Hydroelectricity is energy produced from flowing water. </p><p>The amount of energy produced depends on volume and speed: the more water moving at a fast rate, the more energy produced. </p><p>For this reason, many hydroelectric stations are built near waterfalls.</p> | |
| 568. |
CH2CH BrCH,CH 3-NaOH-→CH,CH CH-CH,+HBrC,H,ONa+C,H,Cl→Peroxide |
| Answer» <p>CH2CHOHCH2CH3CH3CH2CH2CH2BrC6H5OC2H5</p> | |
| 569. |
CH3 CH ' 'CH3-CH-CH-Ch-CH - CH2 CH-CH3 ' ' ' CL CH2 CH3 CH3 |
| Answer» <p>3chloro,4ethyl,2-5dimethyl octane</p> | |
| 570. |
2. What is the name of the reproductive(a) which involves two parents ? |
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| 571. |
CH _ { 3 } CH = CHCH _ { 2 } Cl |
| Answer» <p>1-chloro-but-2-ene. </p> | |
| 572. |
H _ { 2 } C = CH - CH _ { 2 } Cl |
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| 573. |
hat are plant hormone |
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| 574. |
Give an example of a plant hormone that promotes growth |
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| 575. |
) Differentiate between the following:a) Internal and external respirationb) Aerobic and anaerobic respirationc Respiration and combustiond) Respiration and photosynthesis |
| Answer» <p>b</p> <p>c)</p> <p>hit like if you find it useful</p> | |
| 576. |
2.320. The velocity of a projectile at the initial point A is (2i +3j) m/s. It's velocity (in m/s) at point Bis?(a)-2i+3](b) 21-3](c) 2i+3j(d)d-3) |
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| 577. |
What are plant hormones? |
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| 578. |
Multiple choice questionsA. Choose the correct option.Air exerts pressurea) downwardsc) upwardsb) sidewaysd) in all directionsA 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 rainfallIf a region is heated up more than itssurroundings, aa) low pressure area b) high pressure areac) monsoondevelops above it.d) liftDuring a thunderstorm,a) lightning is followed by thunderb) only thunder occursc) thunder is followed by lightningd) thunder and lightning occur separatelyWhich of these is seen only in a tornado? |
| Answer» <p>1) air exerts pressure in all directions.</p><p>2)When the velocity of thewindis great enough, the air pressure above the surface is lower compared to that underneath. This cause therooftoblow off. The aeroplane work in the same principle (lower pressure on top surface)hence option (c)</p><p>3) option(a)If a region is heated more than its surrounding a low pressure area develops above it.</p><p>4) option (a) We see the lightning before we hear the thunderbecause light travels faster than sound. The light from thelightningtravels to our eyes much quicker than the sound from thelightning.</p> | |
| 579. |
EXERCISE T2.1]tan coェ. Count the number of line segments drawn in each of the follome thInteractive Mathematics-6120な4 |
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| 580. |
3. How do auxins promote the growth of a tendril around a support? |
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| 581. |
2.2Calculate the mole fraction of benzene in solution containing 30% bymass in carbon tetrachloride. |
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| 582. |
Q U E S T I OHow many structural isomers can you draw for pentane?What are the two properties of carbon which lead to the huof carbon compounds we see around us?What will be the formula and electron dot structure of cyc |
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| 583. |
What are the two properties of carbon which lead to the huge numberof carbon compounds we see around us? |
| Answer» <p>The two features of carbon that give rise to a large number of compounds are as follows:</p><p>(i) Catenation − It is the ability to form bonds with other atoms of carbon.</p><p>(ii) Tetravalency − With the valency of four, carbon is capable of bonding with four other atoms.</p> | |
| 584. |
E. Fill in the blanks:1. The term allergic rhinitis is the proper medical term for |
| Answer» <p>Medical Definition of Allergic rhinitis. Allergic rhinitis: Medical term for hay fever, an allergic reaction that mimics a chronic cold. Symptoms include nasal congestion, a clear runny nose, sneezing, nose and eye itching, and tearing of the eyes.</p> | |
| 585. |
Motion of earth around Sun is which types of motion? |
| Answer» <p>earth spin around its axis just as a top spins around its spindle</p> <p>rotatory motion is the answer</p> <p>Earth spins around its axis, just as a top spins around its spindle. Thisspinning movementis called Earth's rotation. At the same time that the Earth spins on its axis, it also orbits, or revolves around the Sun. This movement is called revolution.</p> | |
| 586. |
A system undergoes a process in which ΔΕ> + 300 J while absorbing 400 J of heat energy and undergoingan expansion against 0.5 bar What is the change in the volume (in L)? |
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| 587. |
D-4.a A planet of mass m revolves around the sun of mass M in an elliptical orbit. The minimum andmaximum distance of the planet from the sun are r & r2 respectively. If the minimum velocity of theplanet is 2GMthen it's maximum velocity will be2GMr22GMr2GmrG,+12X+12 |
| Answer» <p>Option A is correct just replace the values of r1 and r2</p> | |
| 588. |
unich ContaSeam numbex of atom preson in gomot ca |
| Answer» <p>The molar mass (i.e. the mass of one mole of particles) of Calcium is 40g. This means that there are 6.023 X 1023atoms of calcium in 40g of calcium. Thus</p><p>Number of atoms in 40g of calcium = 6.023 X 10^23</p><p>number of atoms in 1g of calcium = (6.023 X 10^23) / 40</p><p>number of atoms in 4g if calcium = (6.023 X 10^23X 4) / 40</p><p>= 6.023 X 10^22</p><p>So, the number of atoms in 4g of Ca are 6.023 X 10^22. We have to calculate the mass of magnesium which contains the same number of atoms as 4g of Ca. Now the molar mass of magnesium is 24g. This means that there are 6.023 X 10^23atoms of sodium in 24g of magnesium. Thus</p><p>Mass of 6.023 X 10^23atoms of magnesium = 24g</p><p>Mass of 1 atom of magnesium = [24/ (6.023 X 10^23)]</p><p>Mass of 6.023 X 10^22atoms of magnesium= [24 X (6.023 X 10^22)] / (6.023 X 10^23)</p><p>= 2.4g</p> | |
| 589. |
4.Give three uses of artificial satellite. |
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| 590. |
4.When did India launched its first satellite? |
| Answer» <p>India's first satellite, the Aryabhata, was launched by the Soviet Union on19 April 1975.</p> | |
| 591. |
8. Derive the expression ÎG-AH-AS |
| Answer» <p>Relation between ∆H &∆U:Solids and liquids do not show significant change in the volume when heated. Thus if change in volume, ∆V is insignificant∆H=∆U+P∆V∆H=∆U+P(0)∆H=∆UThe difference between the change in internal energy and enthalpy becomes significant when gases are involved in the reaction.Consider a chemical reaction occurring at constant temperature, T and constant pressure, P. Now, let’s say that the volume of the reactants is VAand the number of moles in the reactants is nA. Similarly, the volume of the products is VBand the number of moles in the product is nB.We know that according to the ideal gas equation,Pv=nRTpvA=nARTpvB= nBRTThuspvB-pvA =nBRT- nARTp(vB-vA) =RT(nB-nA)p∆v =∆ngRT∆H=∆U +p∆v∆H=∆U+∆ngRT</p> | |
| 592. |
30. The relationship between Arithmetic mean(A), Harmonic mean (H) and Geometricmean (G) isa) G?-AHb) GVA+Hc) H-GAd) A?-GH |
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| 593. |
12 + 155 |
| Answer» <p>The answer to this question is 167 Thanx...</p> | |
| 594. |
D)FindFind the power of a convex lens which forms a real and inverted itnage of magnification-1an object placed at a distance of 20 cm from its optical centre.thepowerofaconvexlenswhichformsarealandinvertedinage of magn |
| Answer» <p>-1 = v/uv= - × - 20v= 20 cm1/f=1/v-1/uf= 10cmSo focal length= 10 cmPower = 1/ f=10diopter</p> | |
| 595. |
distanceA convex lens forms a real and inverted image of a needle at aof 50 cm from it. Where is the needle placed in front of the convex lensif the image is equal to the size of the object? Also, find the power of thelens. |
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| 596. |
to minimise celdicconsisting of several lenses, in contact, is commonily ucamera, microscopes and telescopesQ U E S T I O N SDefine 1 dioptre of power of a lens.A convex lens forms a real and inverted image of a needle at a distancof 50 cm from it. Where is the needle placed in front of the convex lenif the image is equal to the size of the object? Also, find the power of thlens.Find the power of a concave lens of focal length 2 m. |
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| 597. |
9. Expand the term "LNG".1) |
| Answer» <p>Liquefied natural gas (LNG) is natural gas that has been cooled down to liquid</p> <p>liquified natural gas</p> <p>Liquefied natural gas(LNG) isnatural gas(predominantlymethane, CH4, with some mixture ofethane, C2H6) that has been cooled down to liquid form for ease and safety</p> | |
| 598. |
10. Which type of lens forms always a virtual image |
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| 599. |
What type of lens always forms a virtual image. |
| Answer» <p>A concavelens always forms a virtual imageof an object. Answer: (ii) Concave mirror canform virtualand magnifiedimageof the object. Concavelensand convex mirrorforms virtualbut diminishedimageof the object. Plane mirrorforms virtualand same sizeimageof the object.</p> | |
| 600. |
10. Which type of lens forms always a virtual image? |
| Answer» <p>A concave lens always forms a virtual image of an object.</p><p>*Plane mirrors, convex mirror and concave lens always form a virtual image*</p> | |