InterviewSolution
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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.
| 1951. |
B. Observe the given picture and answer the questions that follow1. Identify the type of venation present in the leaf shown in the picture. Con2. What type of venation is present in the leaves of maize and banana plan |
| Answer» <p>(1) reticulate venation present in the leaf.. </p><p>(2) Banana, bamboo, wheat, grasses andmaizeare few examples of the parallelvenation.</p> <p>alternate venetion is present in this leaf</p> | |
| 1952. |
A particle of mass m is executing oscillations about the origin on the X-axis withamplitude A. Its potential energy is given as U(x) Bx4, where B is a positiveconstant. The x-coordinate of the particle, where the potential energy is one-thirdof the kinetic energy, isC.A/2For a particle executing cimn-3 |
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| 1953. |
how are pearls obtained |
| Answer» <p>NaturalPearls formwhen an irritant - usually a parasite and not the proverbial grain of sand - works its way into an oyster, mussel, or clam. As a defense mechanism, a fluid is used to coat the irritant. Layer upon layer of this coating, called 'nacre', is deposited until a lustrouspearlisformed.</p> <p>Natural Pearls form when an irritant - usually a parasite and not the proverbial grain of sand - works its way into an oyster, mussel, or clam. As a defense mechanism, a fluid is used to coat the irritant. Layer upon layer of this coating, called 'nacre', is deposited until a lustrous pearl is formed.</p> <p>Natural pearls form when an irritant usually a parasite and not the proverbial grain of sand works it's way into an oyster.</p><p>hope this will help you like my answer</p> <p>NaturalPearls formwhen an irritant - usually a parasite and not the proverbial grain of sand - works its way into an oyster, mussel, or clam. As a defense mechanism, a fluid is used to coat the irritant. Layer upon layer of this coating, called 'nacre', is deposited until a lustrouspearlisformed.</p> | |
| 1954. |
how does leaves decompose |
| Answer» <p>Primarily they decompose by becoming food for bacteria, fungi, insects, and the like. Without human intervention, a leaf takes about two years to decompose naturally. The actual amount of time for decomposition is affected by factors that include heat, the type of leaf and the amount of exposure to oxygen.</p> | |
| 1955. |
what is conformation of propane |
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| 1956. |
what is the conformation of propane |
| Answer» <p>Ans :- Conformationsofpropane. ... Energy minima occur at staggeredconformations, and energy maxima occur at eclipsedconformations. The torsional strain is thought to be due to the slight repulsion between electron clouds in the eclipsed bonds. We can representconformationalisomers in one of two ways.</p> | |
| 1957. |
Explain the composition of blod. |
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| 1958. |
adventure of classification of organisms |
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| 1959. |
Prachi is testing the presence of component in the boiled rice using iodine solution. The presence ofwhich component was she probably testing? |
| Answer» <p>she could possibly be testing presence of starch.</p><p>A chemicaltestforstarchis to addiodine solution(red) and see if it turns blue/black in colour. It is possible to distinguishstarch fromother carbohydratesusingthisiodine solution test. For example, ifiodineis added to rice, they will turn black.</p> | |
| 1960. |
Arrange following compound increasing order of cation stability |
| Answer» <p> option a) </p><p>O has 1 lone pair it will give its electron to stabilize + charge</p> | |
| 1961. |
13. Describe sclerenchyma fibres. |
| Answer» <p>Sclerenchyma, in plants, support tissue composed of any of various kinds of hard woody cells. Maturesclerenchymacells are usually dead cells that have heavily thickened secondary walls containing lignin. ...Sclerenchymacells occur in many different shapes and sizes, but two main types occur:fibresandsclereids.</p> | |
| 1962. |
Watson and chick model of DU |
| Answer» <p>Watson-CrickStructure ofDNA. Deoxyribonucleic Acid (DNA) is a double-stranded, helical molecule. It consists of two sugar-phosphate backbones on the outside, held together by hydrogen bonds between pairs of nitrogenous bases on the inside.</p> | |
| 1963. |
x ^ { 3 } + 7 x ^ { 2 } - 9 x - 63 |
| Answer» <p>thanks</p> | |
| 1964. |
f)Explain Solvay process. |
| Answer» <p>It is an industrial process for obtaining sodium carbonate from limestone, ammonia, and brine.</p> | |
| 1965. |
.The sequence of coloured bands in two carbon resistors R and R is(i)brown, green, blue and(ii)orange, black, green.Find the ratio of their resistances.[Delhi 2010 C] |
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| 1966. |
what is the percentage composition of iron, sulphur, and oxygen in ferric sulphate and ferrous sulphate |
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| 1967. |
nswer the following questions.) What is a neighbourhood? |
| Answer» <p>A neighbourhood, or neighborhood, is a geographically localised community within a larger city, town, suburb or rural area. Neighbourhoods are often social communities with considerable face-to-face interaction among members.</p> | |
| 1968. |
what is Charles law |
| Answer» <p>It states that for a fixed mass of a gas at constant pressure, volumeof a gas increases on increasing temperatureand decreases on cooling.Mathematically,V/T = k</p> | |
| 1969. |
11. A displacement vector, at an angle of 30° with y-axis has an x-component of 10 units. Then the magnitudeof the vector is-(A) 5.0(B) 10(C) 11.5D)20 |
| Answer» <p> given the x component is 10 units</p><p>and the angle to y axis is = 30° so the angle to x axis will be = 90-30 = 60°</p><p>Let the magnitude be Mso, Mcos60° = 10 or , M/2 = 10 ......... (cos60° = 1/2)</p><p>so, M = 2*10 = 20 units </p> | |
| 1970. |
Sts18. Why does iron surface get covered with a powdery brown material when kept in moist atmosphere? |
| Answer» <p>During the corrosion ofiron,ironmetalisoxidised by the oxygen of air in the presence of water (moisture) to form hydratedironoxide called rust. When theironpieceis keptoutside,it reacts with O2 andmoisturein the atmosphereandgetsoxidised formingironoxide or rust.</p> | |
| 1971. |
Observe and notedTabrics like cotte wooljute, silk and nylon. Observer1. Collect samples of different fabrics like cotton wool,your observation on the following criteria:-(a) light or heavy(6) smooth or coarse(c) shiny or dull appearance |
| Answer» <p>b is the correct answer of this question</p> <p>option b is the correct answer of the given question</p> | |
| 1972. |
what nationality |
| Answer» <p>Nationality is a legal relationship between an individual person and a state. Nationality affords the state jurisdiction over the person and affords the person the protection of the state.</p> | |
| 1973. |
13. A stone is dropped from the top of a tower 500 m high into apond of water at the base of the tower. When is the splashheard at the top? Given, g 10 m s2 and speed of sound340 m s. |
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| 1974. |
s lI 2nd and 5h period in Modern Periodic Table.ame the component of blood which transportiFood, carbon dioxide and nitrogenous wastes(i) Oxygen |
| Answer» <p>1.Plasma isresponsibletotransport food, carbon dioxide, andnitrogenouswastes in dissolved form2.Oxygen is carried by the redbloodcells. Many other substances such as salts, are alsotransportedby theblood.</p> | |
| 1975. |
iam aheight op imос у g.tri kes uu 8round and lossesst. 4/AS-tri25. p abody te beunds to a height op |
| Answer» <p>answer is 12meters.</p><p>initially when the body is dropped, u=0, distance travelled is 16m therefore final velocity before hitting the ground is</p><p>v^2=u^2+ 2as</p><p>v^2= 2x gx 16.</p><p>since 25% kinetic energy is lost in collision, the energy left in the body is 75%</p><p>therefore 75/100 x 1/2mv^2= mgh</p><p>wherehis the distance to which it rebounds.</p><p>m on both sides gets cancelled, on putting the value of v^2in the above equation you geth= 12m</p> | |
| 1976. |
2.How can we save water? |
| Answer» <p>Check your toilet for leaks. ...Stop using your toilet as an ashtray or wastebasket. ...Put a plastic bottle in your toilet tank. ...Take shorter showers. ...Install water-saving shower heads or flow restrictors. ...Take baths. ...Turn off the water while brushing your teeth. ...Turn off the water while shaving.</p> <p>Assume, নমস্কার </p> | |
| 1977. |
Name four compounds which undergo sublimation on heating. |
| Answer» <p>sublimation on heating:-dry icesnow and ice in wintersnapthalene ballsfrozen food packets </p> | |
| 1978. |
किक हि S WO 03 05० (०६ विधि 4 |
| Answer» <p>Ans :- रसायन विज्ञानमेंसमजातीय श्रेणी(homologous series) यौगिकों की ऐसी श्रेणी को कहते हैं जिनको एक सामान्य सूत्र द्वारा निरूपित किया जा सके। ऐसे सामान्य सूत्रों में प्रायः केवल एक ही प्राचल (पैरामीटर) होता है। उदाहरण के लिये,अल्केनएक समजातीय श्रेणी है जिसमेंमिथेन,इथेन,प्रोपेनआदि यौगिक आते हैं। इसका सामान्य सूत्र CnH2n+2है।</p> | |
| 1979. |
The electronic energy of h atom is - 21. 76 into 10 to the power minus 19 by N square Jule. calculate the longest wavelength of light that will be needed to remove an electron from third orbit of he Plus ion? |
| Answer» <p>the correct answer of this question is 1.36×10to the power 38</p> <p>the correct answer of this questions is 1.36×10 to the power 38</p> | |
| 1980. |
6. Which of the following is a mixture?(a) Carbon dioxide (b) Sulphur(c) Nitrogen(d) Air |
| Answer» <p>the correct answer isd) Air</p> <p>Air is a mixture of different gases including nitrogen, oxygen etc.</p> <p>Air is a mixture it is correct </p> <p>Option d is correct Air is mixture of various gases and nanoparticles</p> | |
| 1981. |
A table-top measures 2 m 25 cm by 1 m 50 cm. What is the perimeter of thetable-top? |
| Answer» <p>2(2.25+1.50)=2*3.75=7.5m is the perimeter of the table top</p> <p>7.5 metre is the perimeter of the table top</p> <p>7.5 m is the correct answer to this question </p> <p>7.5 metre is the perimeter of the top table.. is the right answer for this questions...</p> <p>7.5 meter is a good answer that question </p> <p>7..5 is the correct answer. </p> <p>7.5 meter is the perimeter of the table top</p> | |
| 1982. |
(i) Give verb form of : (a) answer (b) necessary |
| Answer» <p>a) answered,answer the doorb)Had to refers to anecessityin the past.</p> | |
| 1983. |
Define the term resultant and equilibrant. maximum value of resultant of two forccs P and Q is 3 the minimum value of resultant is 17N. Find the forces. |
| Answer» <p>Equilibrantforce is a force which brings equilibrium state. It is considered to be the equal and opposite of theresultantforce. Equilibrantforce is the force, which keeps any object motionless and acts on virtually every object in the world that is not moving.</p><p>Aresultant forceis the singleforceand associated torque obtained by combining a system offorcesand torques acting on a rigid body. Thedefiningfeature of aresultant force, orresultant force-torque, is that it has the same effect on the rigid body as the original system offorces.</p> | |
| 1984. |
A system 'S' receives heat continuously from anelectrical heater of power 10W. The temperatureof S becomes constant at 50°C when thesurrounding temperature is 20°C. After theheater is switched off, S cools from 35.1°C to34.9°C in 1 minute. The heat capacity of S is |
| Answer» <p>thank you sir</p> | |
| 1985. |
Why does Kapoor get invisiblewithout leaving some concretespaces? |
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| 1986. |
umat iy Ohidatien? |
| Answer» <p>Oxidation is the loss of electrons during a reaction by a molecule, atom or ion.</p><p>Oxidation occurs when the oxidation state of a molecule, atom or ion is increased. The opposite process is called reduction, which occurs when there is a gain of electrons or the oxidation state of an atom, molecule, or ion decreases.</p><p>An example of a reaction is that between hydrogen and fluorine gas to form hydrofluoric acid:</p><p>H2 + F2 → 2 HF</p><p>In this reaction, hydrogen is being oxidized and fluorine is being reduced. The reaction may be better understood if it is written in terms of two half-reactions.</p><p>H2 → 2 H+ + 2 e-</p><p>F2 + 2 e- → 2 F-</p><p>Note there is no oxygen anywhere in this reaction!</p> <p>The process of oxidizing or any substance is oxidized is known as oxidation.</p> | |
| 1987. |
Shortest distance from initial to final position. |
| Answer» <p>It could only be the vertical or horizontal line .a line only gives the shortest distance between two points.</p> <p>the shortest distance from initial to final position is displacement</p> | |
| 1988. |
Poven Plant cheme |
| Answer» <p>A power plant or a power generating station, is basically an industrial location that is utilized for the generation and distribution of electric power in mass scale, usually in the order of several 1000 Watts. Engineering the best electrical auxiliary power scheme for power plants is an area requiring critical evaluation. The choice between Station Transformer Scheme and Generator Circuit Breaker (GCB) Scheme may be decided upon, through a cost benefit analysis based on the prevailing constraints and plant requirements.</p> | |
| 1989. |
When a rubber-band is stretched by a distance x, it exerts a restoring force of magnitude F-xbx2where a and b are constants. The work done in stretching the unstretched rubber-band by L is:-JEE-Main-2014]2)2 2 34) al ) |
| Answer» <p>F = ax + bx^2</p><p>dw = F dx</p><p>w =o∫L(ax + bx^2)dx</p><p>w = aL^2/2 + bL^3/3</p> <p>Really impressive, are you in 8th👏</p> | |
| 1990. |
3. Are the answers to the aboveditquestions necessarily the sameor different? Why? |
| Answer» | |
| 1991. |
Doctor advised Rahul to take iroa rich food items like spinach. What disease could he be sufiefrom?2. |
| Answer» <p>He could possibly be suffering from anaemia.</p><p>Ifyour bodydoesn'thaveenoughiron, it cannot produce enough healthy oxygen-carrying red blood cells.Iron deficiency cancause anemia, which meansyou havetoo little hemoglobin. Women intheirchildbearing years are at higher risk foriron deficiencybecauseof thelossofblood during.</p> | |
| 1992. |
a food rich in starch (one name ) |
| Answer» <p>Rice is rich in starch</p> <p>Pea is rich in starch.</p> <p>potato is the food that is Rich in srarch</p> <p>potato is rich in starch</p> | |
| 1993. |
why organisms need to take food |
| Answer» <p>Growth is the main reason for all the organisms to take food. Food provides essential energy to run and walk.The main reason is to repair the damaged and injured parts of the body and also, it provides a shield against deadly diseases and increases immunity against many infections.</p> | |
| 1994. |
1.Simplify combining like terms:(i) 21b-32+7b-20b |
| Answer» <p>1)8b-32=8(b-4)2)7z^3 +12z^2-20z3)p-p+q-q-q+p =p-q</p> | |
| 1995. |
Explain,why\Delta A B C \cong \triangle F E D |
| Answer» <p>As given AB = FE angle ABC = angle FEDBC = DEby AAS rule ∆ ABC is congurent to ∆FED</p> | |
| 1996. |
5) A current of 1 ampere flows in a series ciruit containing an electric lamp and a conducwhenconnected to a 10 V battery. Calculate the resistance of the electric lamp. Nsistance of 10 Ω is connected in parallel with this series combination, what change (irrent flowing through 5Ω conductor and potential difference across the lamp will talve reason. Draw circuit diagram.İstanca 20 O are connected (i) in parallel (ii) in series |
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| 1997. |
eme thonee things whene ciu nessuneedlanein the adtms phen?saluble impeli |
| Answer» <p>2)krypton, neon,helium</p> <p>3) for removing soluble impurities from waterby sedimentation and decantation</p> | |
| 1998. |
formula of hydrochloric acid |
| Answer» <p>HCl</p> | |
| 1999. |
\operatorname { cos } 38 ^ { \circ } \operatorname { cos } 52 ^ { \circ } - \operatorname { sin } 38 ^ { \circ } \operatorname { sin } 52 ^ { \circ } = 0 |
| Answer» <p>Cos 38 = Cos (90-52)Cos 38 = sin 52Sin 38 = sin ( 90 - 52)= Cos 52Cos 38cos52-sin38sin52sin52cos52 - cos52sin52 = 0</p> | |
| 2000. |
दा. लिन, "० अब: आग. IRBYI) bkHE पक कपडे पूल e b Snicpls ey LB oदेव का व विधिक!दिन 8/8 Bk kb (B |
| Answer» <p>हां यह समांतर श्रेणी है4 th term = 3+3√25th = 3+4√2</p> | |