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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.
| 4101. |
8.What are variations? Explain with a suitable example.(AS1) |
| Answer» <p>Variation, in biology, any difference between cells, individual organisms, or groups of organisms of any species caused either by genetic differences (genotypic variation) or by the effect of environmental factors on the expression of the genetic potentials (phenotypic variation).</p> | |
| 4102. |
1. (a)What do you mean by statistical qualitycontrol? Distinguish between processcontrol and product control.3 |
| Answer» <p>1</p> | |
| 4103. |
are milk and milk products, regarded as good tood torall?ded as good food for one and |
| Answer» <p>This is probably becausemilkisregardedas a completemeal. ...Milkisregardedas a completefoodbecause of its rich content of protein, fat, carbohydrates,allknown vitamins and various minerals essential for sustaining life and maintaininggoodhealth</p> | |
| 4104. |
how type of fed given yo sheep |
| Answer» <p>Mostly they eat grass , glover, forbs and other pasture plants</p> | |
| 4105. |
(4) Give two examples of alloys used in house with chemical composition. |
| Answer» <p>Ans :- Examples of common alloys:</p><p>Steel, a combination of iron (metal) and carbon (non-metal)</p><p>Bronze, a combination ofcopper(metal) andtin(metal) and.</p><p>Brass, a mixture ofcopper(metal) andzinc(metal)</p><p>PLEASE LIKE THE ANSWER</p> <p>what is chemical fertilization ?give tow example</p> | |
| 4106. |
Equation of a standing wave is expressed as y = 2A snd così. In te eaation, qattyckrepresets(A) the transverse speed of the particles of the string(B) the speed of the component waves(C) the speed of the standing wave.(D) a quantity that is independent of the properties of the string14. |
| Answer» <p>A) The transverse speed of Particle of string</p> | |
| 4107. |
A. Write true of false for the following:-1. Amoeba is a unicellular organism.2. Veins take the blood from the heart andsupply it to different parts of the body.3. Normal pulse rate is 70 to 72 per minute4. Mushroom is an Algae.Solar energy is converted into chemicalenergy during photosynthesis.6. Incissors are used for tearing and cuttingfood.Roots absorb water and minerals from thesoil. |
| Answer» <p> 1true 2true,3,4,5,6 are false 7true</p> <p>1.True</p><p>2.True</p><p>3.False</p><p>4.False</p><p>5.True</p><p>6.False</p><p>7.True</p> <p>1. true 2.true3.false4.false5.false6.false7.true</p> <p>truetruefalsefalsetruefalsetrue</p> <p>truetruefalsefalsetruefalse true </p> <p>TrueTrueFalseFalseTrueFalseTrue</p> | |
| 4108. |
Explain how a transverse wave can be generated in aslinky. |
| Answer» <p>When the slinky is stretched and realeased,the first coil transfers its energy to the second coil. ... In this manner, energy istransported from one end of the slinky to the other, from its source to another location. Abtransverse wave is a wave in which particles of the medium move in a direction perpendicular to the direction that the wave moves.</p> | |
| 4109. |
An ................is a unicellular organism |
| Answer» <p>An amoeba is a unicellular organism.</p> | |
| 4110. |
what is microbiology ? branches of microbiology |
| Answer» <p>Ans :- Microbiology is the study of microorganisms, those being unicellular, multicellular, or acellular. Microbiology encompasses numerous sub-disciplines including virology, parasitology, mycology and bacteriology. </p><p>Microbiology can be broadly classified as :</p><p>General Microbiology</p><p>Applied Microbiology</p><p>But the branches of Microbiology as listed below:</p><p>Bacteriology: the study of bacteria.</p><p>Mycology: the study of fungi.</p><p>Protozoology: the study of protozoa.</p><p>Phycology/algology: the study of algae.</p><p>Parasitology: the study of parasites.</p><p>Virology: the study of viruses.</p><p>Nematology: the study of nematodes.</p><p>Microbial cytology: the study of microscopic and submicroscopic details of microorganisms.</p><p>Microbial physiology: the study of how the microbial cell functions biochemically. Includes the study of microbial growth, microbial metabolism and microbial cell structure.</p><p>Microbial ecology: the relationship between microorganisms and their environment.</p><p>Microbial genetics: the study of how genes are organized and regulated in microbes in relation to their cellular functions. Closely related to the field of molecular biology.</p><p>Cellular microbiology: a discipline bridging microbiology and cell biology.</p><p>Evolutionary microbiology: the study of the evolution of microbes. This field can be subdivided into:</p><p>Microbial taxonomy: the naming and classification of microorganisms.</p><p>Microbial systematic: the study of the diversity and genetic relationship of microorganisms.</p><p>Generation microbiology: the study of those microorganisms that have the same characters as their parents.</p><p>Molecular microbiology: the study of the molecular principles of the physiological processes in microorganisms.</p><p>Medical microbiology: the study of the pathogenic microbes and the role of microbes in human illness.</p><p>Industrial microbiology: the exploitation of microbes for use in industrial processes.</p><p>Agricultural microbiology: the study of agriculturally relevant microorganisms.</p><p>Food microbiology: the study of microorganisms causing food spoilage and foodborne illness.</p> <p>thank u very much</p> | |
| 4111. |
82. कौन-सा सूत्र ऐल्केन को प्रकट करता है ?(अ) CHA(ब) CHA(स) CH4(द) CJHig. |
| Answer» <p>C2H6 is the answer ......</p> <p>C2H6: is the correct answer of the given question</p> <p>option (अ) is correct answer</p> <p>C2H6 is the correct answer </p> | |
| 4112. |
What are the factors responsible for eutrophication and pollutionof the great lakes?Briefly discuss the Bhopal gas tragedy in india.(b)(c) |
| Answer» <p>b)Eutrophication is an ecological process, akin to aging, in which a water body is increasingly enriched with organic matter. Although the most obvious signs of eutrophication in lakes and rivers involve algal blooms and fish kills, the systemic of eutrophication, although profound, are often not as noticeable to the casual observer. Eutrophication of lakes and rivers is accelerated by nutrient pollution, one of the most pervasive water quality problems in the world. Increases in populations and intensification of land use have accelerated eutrophication of water bodies from the Great Lakes of North America, to Lake Tai of China to Lake Victoria in Africa. Because nutrients can come from many sources, point as well as nonpoint, comprehensive strategies are required to curb eutrophication. A variety of watershed programs have yielded success, but they are outnumbered by the ever‐expanding number of lakes and rivers that are undergoing eutrophication.</p> | |
| 4113. |
state the tactons on which angle of deviationproduced-by-thin-prism.ä¸defendock |
| Answer» <p>The deviation produced by a prism depends up on the following factors</p><p>1. Angle of incidence</p><p>It depends up on angle of incidence (i) because of the relation i + e = A + δ</p><p>2. Refractive index of the prism</p><p>Angle of emergence e is related to i by refractive index of the prism material.</p><p>3. Angle of prism (A)</p><p>Because of the above mathematical relation.</p><p>4. Wavelength of the light used</p><p>Different colors of light have different wavelengths and each colour travel with different speed inside the prism material. Due to this difference in speed inside the prism each colour has got different refractive indices for the same prism material, since angle of deviation depends upon the refractive index of the prism, so it in turn depends up on the wavelength of light used. </p> | |
| 4114. |
how do plants respire ,explain with help of diagram |
| Answer» <p>Ans :- The process ofrespirationinplantsinvolves using the sugars produced during photosynthesis plus oxygen to produce energy forplantgrowth. In many ways,respirationis the opposite of photosynthesis. As with photosynthesis,plants get oxygen from the air through the stomata.</p> | |
| 4115. |
why do we respire explain? |
| Answer» <p>It occurs in every cell in your body. During normal humanrespiration, glucose (a type of sugar that you get from food) reacts with oxygen to produce energy. The energy is needed for growth, repair and movement. Water and carbon dioxide are bi-products ofrespiration- they need to be excreted.</p> <p>write very short ans </p> | |
| 4116. |
5. How do plants respire? |
| Answer» | |
| 4117. |
3.Differentiate between exoskeletonand endoskeleton, Give examples oforganisms possessing these types ofskeleton. |
| Answer» <p>The differences between endoskeleton and exoskeleton are elucidated.An endoskeleton is the internal support of the structure of an organism.*Endoskeleton in human beings is the structural framework of bones and cartilage. Our endoskeleton is mainly formed by 206 bones made up of mainly calcium and phosphorous. Almost all the vertebrates have this type of bones.*Endoskeleton develops from endoderm.*Endoskeleton structures are living.*Some examples of endoskeleton are bone, cartilage etc.Exoskeleton is a complex rigid outer covering of an organism which protects the muscles and soft tissues inside.*Exoskeleton develops from ectoderm.*Some examples of exoskeleton are scales, calcified shells, chitinous cuticle.</p> | |
| 4118. |
5.Mangroove trees respire with their ...................... |
| Answer» <p>aerial roots or spike is the answer</p> | |
| 4119. |
Which of the following organisms does not have both muscles and skeleton for movement?(a) dog(b) snail(c) earthworm(d) human being |
| Answer» <p>earthworm</p> | |
| 4120. |
describe human axial skeleton. |
| Answer» <p>Theaxial skeletonis the part of theskeletonthat consists of thebonesof the head and trunk of a vertebrate. In thehuman skeleton, it consists of 80bonesand is composed of six parts; theskull bones, the ossicles of the middle ear, the hyoid bone, the rib cage, sternum and the vertebral column.</p> | |
| 4121. |
How can you measure the length of a curved lines using a thread ? |
| Answer» | |
| 4122. |
Which is least likely to cause changes to rocks on Earth's surface? |
| Answer» <p>some changes are slow process which are due to erosion and weathering</p> | |
| 4123. |
hereIs the base radius and h is the height of the cynExample 13 : The pillars of a temple are cylindricallyshaped (see Fig. 13.26). If each pillar has a circularbase of radius 20 cm and height 10 m, how muchconcrete mixture would be required to build 14 suchpillars? |
| Answer» <p>Bharat ke vartman mukhay nirvachan aayutya( c.i.c) kaun hai</p> | |
| 4124. |
. Name two processes responsible for the formation of clouds |
| Answer» <p>evaporation and transpiration </p> | |
| 4125. |
(4) P-2, Q-2,wooden stick of mass 1.6 kg of iength i rests in an inclined manner on a smoonner on a smooth, vertd the wall, the reaction forwall o height h<) such that a small portion of the stick extends beyonand the bottom of the stick is on a rough floor the reaction of the wall on the stick is equalmagnituce to the reaction of the floor on the stick. the ratio and the frictional force f at the betA uniforme walk is perpendicuiar to the stick the stick makes an angle of 30° with thinof the wall on the sticf at the bottom(2016 Adv.)of the stick are (g 10ms)h3 163163(2)1 16/ 16h33 164) 7 161 163 |
| Answer» | |
| 4126. |
what quality of Teflon make it as raw material for making non-stick cookwares |
| Answer» <p>fieldwork grocery heck so CPU</p> <p>my self sarvesh Jaiswal </p> <p>Teflon is a synthetic material that can be used to cover the surface of certain object and imparts nonstick properties to it. The name ‘Teflon’ is actually a brand name (patented by DuPont) of polytetrafluoroethylene (or PTFE), which is a non-stick chemical substance discovered back in the 1930s during a laboratory experiment.</p><p>Reasons why Teflon is used for Non Stick material:</p><p>It is highly inert, meaning that it doesn’t react with other substances easily.It has a high melting point and shows exceptional electrical properties, which makes it an excellent choice to be used for the wiring of computer and aerospace applications.Non-stick quality, which is why it’s used in numerous frying pans, pots, and other culinary tools.</p> | |
| 4127. |
A closed cylindrical tank of height 1.4m and radius of the base is 56 cm ismade up of a thick metal sheet. Howmuch metal sheet is required?(Express in square metres). AS, 12 M |
| Answer» <p>Height = h =1.4 mRadius = 56 cm = 0.56 m</p><p>So the Metal sheet required to make cylindrical tank are = total surface area of cylindrical tank which is equal to 2r(r+h)</p><p>=2×22/7×0.56(0.56+1.4)=2×22×0.08×1.96=6.8992 square meters.</p> | |
| 4128. |
44. The mass of one molecule of a substance is 4.65 x 1023 g. What is its molecular mass? Whatsubstance be ? |
| Answer» | |
| 4129. |
R Differentiate between the following1. Density and Relative Density2. Mass and Weight3. Beim balince and Spring balance |
| Answer» <p>Density is mass divided by volume. It is told as x gms. per cubic cms. (Or x pounds or ounces per cubic feet or cubic inches in fps system).Relative density is comparison of density of the substance with that of water. So it is a pure no. Density of water being one gm. per cc; in cgs system; the numerical value of density and relative density is the same. The numerical value of relative density is the same in all systems.</p> | |
| 4130. |
aluminum foil is used for wrapping food because |
| Answer» <p>Ans :- Aluminium foils are used to wrap food items because aluminium being a soft malleable metal it can bebeatento in sheets to form thin wrapping sheets. Moreover it does not react with food items. Immersion rods are made of metallic substances metals are good conductors of heat and electricity.</p><p>PLEASE LIKE THE ANSWER</p> | |
| 4131. |
Define Sublimation. |
| Answer» <p>Ans :- Sublimationis a chemical process where a solid turns into a gas without going through a liquid stage. An example of sublimiation is when ice cubes shrink in the freezer.</p> | |
| 4132. |
logistic growth occurs when there is |
| Answer» <p>Logistic growth occurswhen apopulation's growthslows and then stops, following a period ofexponential growth. Acting separately or together, limiting factors determine the carrying capacity of an environment for a species. ... birthrate, death rate, and the rate individuals enter or leave apopulation.</p> | |
| 4133. |
J. 24 g of carbon reacts with some oxygento make 88 grams of carbon dioxide.Find out how much oxygen must havebeen used. |
| Answer» <p>Explanation:</p><p>As per the law of conservation a atom can not be created or destroyed .</p><p>Given,carbon =24g</p><p>Total Carbon dioxide made=88g </p><p>Therefore, 88-24=64</p><p>So, the oxgen added in reaction of carbon dixide is 64g</p> | |
| 4134. |
evs |
| Answer» <p>Environmental science is an interdisciplinary academic field that integrates physical, biological and information sciences to the study of the environment, and the solution of environmental problems. Environmental science emerged from the fields of natural history and medicine during the Enlightenment.</p> | |
| 4135. |
Gt792-y 6-y2i)5 |
| Answer» | |
| 4136. |
Two projectiles of same mass have their maximumkinetic energies in ratio 4 1 and ratio of theirmaximum heights is also 4 I then what is theratio of their ranges?a) 2(d) 16: 1 |
| Answer» <p>if we have a particle with velocity v, then kinetic energy, K = 1/2 m v^2 max height attained by this ,H = v^2 / 2 g </p><p>but in this case velocity must be vertical ,</p><p> otherwise we have to use its vertical component , v sin x instead of it in the H expression so , </p><p>we can easily get , k = mg H , </p><p>problem solution,</p><p> let the velocities of two particals be v1, v2 angle with horizontal be x1 ,x2 kinetic energies k1, k2 max. height H1, H2 & range r1 ,r2 </p><p>k1/k2 = 4 /1 ,</p><p> gives v1 /v2 = 2/1 </p><p>we know that, H1 = (v1sinx1 )^2 /2g H2 = (v2sinx2 )^2 /2g so H1 / H2 = 4/ 1 gives v1sinx1 / v2sinx2 = 2/ 1 from eq (1),............. we get, sinx1 = sinx2 so, x1 = x2 </p><p>range of first r1 = 2v1 sinx cosx / g second, r2 = 2v2 sinx cosx / g so, r1/ r2 = v1/ v2 = 2/1 ans is (a) option.</p> | |
| 4137. |
Questions--1) Write uses of Newton's 1st law in daily life. |
| Answer» | |
| 4138. |
A particle is thrown vertically up with a velocity of 50 m/s. what will be its velocity at highestpoint of journey? How high would the particle rise? What time it takes to reach the highest point?Take the value of g-10 m/ s) |
| Answer» <p>U= 50m/sg= -10m/s^2</p><p>The velocity at the highest point will be 0 m/sThus v=0</p><p>Height can be calculated by</p><p>2gs=v^2-u^2-20s= -2500s= 125m</p><p>Time :v= u+gt0=50-10t-50=-10tt= 5sec</p><p>Like my answer if you find it useful!</p> | |
| 4139. |
write a brife note on allotropy with suitable example |
| Answer» <p>Ans :- Allotropy or allotropism is the property of some chemical elements to exist in two or more different forms, in the same physical state, known as allotropes of these elements. Allotropes are different structural modifications of an element; the atoms of the element are bonded together in a different manner.</p><p>diamond, where the carbon atoms are bonded together in a four-cornered lattice arrangement;</p><p>graphite, where the carbon atoms are bonded together in sheets of a six-sided lattice;</p><p>graphene, single sheets of graphite;</p> | |
| 4140. |
5.4 Find the oxidation numbers to the underlinedspecies in the following compounds or ions.(PF, NalO3, K,Cr,O, NaHCO3, CIF3, SbF.NaBH, H,PtCl, H,P,010, V,04, Cuso,BiO3, CH,OH, H,02, C,H,02, H, As07,Mn(OH)3, 13, C,H,OH, H3PO3, Na2CO3, 104,vo-, Ni,O3, K3 [Fe (CN).). |
| Answer» <p>Let oxidation no. Of P be xThenX+6(-1)=-1X=5</p> | |
| 4141. |
24A 10 ohm resistor is connected to a supply voltage alternating between +4V and -2V as shown in thefollowing graph. The average power dissipated in the resistor per cycle is[Olympiad (Stage-1) 2017)4Voltage (V)200 0.1 0.20.3 0.40.6 Time (s)-2(A) 10 W(B) 1.2 W(C) 1 4W(D) 1.6W |
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| 4142. |
5Chlorine is prepared in the laboratory by treating manganese dioxide (MnO2) withaqueous hydrochloric acid according to the reaction4 HCl (aq) MnO2(s) 2H2O )+ MnCl(a)+ C2 (g)How many grams of HCl react with 5.0 g of manganese dioxide? |
| Answer» | |
| 4143. |
2.35 Henry's law constant for the molality of methane in benzene at 298 K is4.27 x 10 mm Hg. Calculate the solubility of methane in benzene at 298 Kunder 760 mm Hg.10mwas dissolyed in 1000 g of liquid E |
| Answer» | |
| 4144. |
ii) Hydrolysis of PCL |
| Answer» <p>In PCl3, phosphorous is less electronegative than chlorine so, they form a polar bond. So, the positive polar charge on phosphorous attacks the lone pair of electrons on water molecule to give different products.</p><p>PCl3+ 3H2O → H3PO3+ 3HCl</p> | |
| 4145. |
A lever has an arm that rests and rotatesagainst this point. |
| Answer» <p>Alever is a simple machinethat allows you to gain a mechanical advantage in moving an object or in applying a force to an object. It is considered a "pure" simple machine because friction is usually so small that it is not considered a factor to overcome, as in other simple machines.</p><p>A lever consists of a rigid bar orbeam that is allowed to rotate or pivot about a fulcrum. An applied force is then used to move a load. There are three common types or classes of levers, depending on where the fulcrum and applied force is located</p> | |
| 4146. |
(4) What type of lever is a nutcracker?B. SecondA. FirstC. Third D. of the given |
| Answer» <p>Nutcracker is an example of a second-class lever. The fulcrum in the nutcracker is at one end, where the two metal rods of the device are hinged together. In second-class lever, the resistance force lies between the effort force and the Fulcrum.</p><p>(B) is correct option </p> | |
| 4147. |
ddgecie cells.What is mainly digested by stobyof man?4 |
| Answer» <p> Ans :- Proteindigestion. Proteindigestionoccurs in thestomachand duodenum in which 3 main enzymes, pepsin secreted by thestomachand trypsin and chymotrypsin secreted by the pancreas, break down food proteins into polypeptides that are then broken down by various exopeptidases and dipeptidases into amino acids.</p> | |
| 4148. |
. 10D. Answer the following questions:1. What are the different parts of plant?2. Which part of the plant is present below the ground?3. What are fruits?4. Which is the most beautiful part of the plant?5. What are the different shapes of leaves? |
| Answer» <p>1 roots2 roots3. fruit is tasty 4. rose5. leaf</p> <p>1) roots2) roots3) fruit is tasty4) rose5) leaf</p> <p>1. the different parts of plant are root, leaf, stem, flower and fruit2. Root 3. fruits are sweet part of plants.4. Flower.5. there are many shapes of leaves like, conical , oval etc.</p> <p>1) different parts of plants are root, stem & branches, leaf,trunk etc2) Root of part of plant present below the ground.3) the extra food of plant are the fruit . it is has seeds which give new plant.4) flower are the most beautiful part of plant.</p> <p>1.roots. 2.roots. 3.fruit is very tasty. 4.rose. 5.leaf </p> | |
| 4149. |
EXERCISESD What are alkyl halides? How are they classified? |
| Answer» <p>Alkyl halides(also known as haloalkanes) are compounds in which one or more hydrogen atoms in an alkane have been replaced by halogen atoms (fluorine, chlorine, bromine or iodine). Alkyl halides are formally derived from alkanesby exchanging hydrogen for halogen (fluorine,chlorine,bromine, andiodine). Depending on the degree of substitution at thecarbon atomcarrying the halogen, alkyl halides are classified into primary, secondary and tertiary alkyl halides.</p> | |
| 4150. |
7. Give reasons for the followinga. The polar bear has white furb. Siberian crane visits Asiacountriduring extreme winter seasonc. Toucan can grack the hard shellnuts |
| Answer» <p>1.Polar bears have white fur so that they can camouflage into their environment. Their coat is so well camouflaged in Arctic environments that it can sometimes pass as a snow drift.Interestingly, the polar bear’s coat has no white pigment; in fact, a polar bear’s skin is black and its hairs are hollow. They have a thick layer of body fat, which keeps them warm while swimming, and a double-layered coat that insulates them from the cold Arctic air.</p><p>2.Siberian crane visits asian countries due to cold weather.</p><p>3. Toucan can crack the hard shells of nuts because they have hard beaks thet helps them to crack the hard shells.</p> <p>thankd</p> | |