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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.
| 1601. |
Which of the following can never form a circular shadow?(a) A ball(b) A flat disc(c) A shoe box(d) An ice cream cone |
| Answer» <p>c) is the correct option </p> | |
| 1602. |
5) The mixture of mustard seeds, ce allu sutu4. Which separation process is used uration process is used when one component is in a mixture :a) Heavier than the other ?b) Bigger than the other ?c) Different shape and colour from the other ?d) One is soluble in water and the other is not ?e) One floats and the other sinks in water ?Hand picking d) Filteration e) Deca |
| Answer» <p>option d one is soluble in water and the other is not</p> <p>filteration process for a,b,d and e</p> | |
| 1603. |
1. Which one of these is a mechanical process of treating wastewater? |
| Answer» <p>Ultrafiltration is one of the mechanical process of treating waste water</p> | |
| 1604. |
13. Calculate the molarity of a solution obtained bymixing 4g of NaOH in 250 ml of solution. |
| Answer» <p>Molarity(M) = w× 1000 / GMW× V</p><p>where, w = given weight of the solute = 4gGMW = Gram Molecular Weight of the solute = 40gV = Volume of the solution in ml. = 250 ml</p><p>So, M of NaOH = 4× 1000 / 40× 250 = 0.4 M</p> | |
| 1605. |
Difference betweelftornselou2At which temperature ne readings of Celsius andFahrenheit thermometers will be the same. |
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| 1606. |
Ch 12- Exemplar, Page 3/94096 H,S0,1% HgSOIsomeristion CH,-C-CH,8,CH,-CCH>AStructure of A' and type of isomerism in the above reaction are respectively.() Prop-1-en-2-ol, metamerismProp-1-en-1-ol, tautomerismii Prop-2-en-2-ol, geometrical isomerism(iv) Prop-1-en-2-o, tautomerismCompounds A and C in the following reaction are9.HydroborationoxidationH,SO, Δ(ii H,O(i) identicali positional isomersfunctional isomers(iv) optical isomersWhich is the most suitable reagent for the following conversion?10.i Tollen's reagent) Benzoyl peroxide(iii) I, and NaOH solution(iv) Sn and NaOH solution11. Which of the following compounds will give butanone on oxidation withalkaline KMnO, solution?() Butan-1-olii Butan-2-olBoth of these(iv) of theseIn Clemmensen Reduction carbonyl compound is treated with12.() Zinc amalgamHClSodium amalgam HClZinc amalgam nitric acidiv) Sodium amalgam + HNO |
| Answer» <p>12) option (a) is correct</p> | |
| 1607. |
imuli : Changes in the surroicellular organisms : Livirery Short Answer Ques1. Define adaptation2. What kind of living oTape grass is a plantdoes this help the tap |
| Answer» <p>Inbiology,adaptationhas three related meanings. Firstly, it is the dynamic evolutionary process that fitsorganismsto their environment, enhancing theirevolutionary fitness. Secondly, it is a state reached by the population during that process. Thirdly, it is aphenotypicoradaptive trait, with a functional role in each individual organism, that is maintained and has beenevolvedbynatural selection.</p> | |
| 1608. |
211.Calculate the rms speed of ozone kept in a closed vessel at 20°C and 82 cm Hg pressure. |
| Answer» <p>C√3PV/M,P1V1/T1=P2V2/T2</p><p>Where,P1= 82 cm = 82 * 13.61 * 981 dynes</p><p>V1= Volume of gas at 82 cm and 20oC</p><p>P2,V2andT2are the conditions at NTP,</p><p>=>V1=P2V2/T2*T1/P1= 76.0 *22400/273 * 293/82 = 22282 cc</p><p>M = molecular weight of ozone (O3) = 48</p><p>∴ C = √3 *(82 * 13.6 * 981.) * 22282/48</p><p>= 3.9 *104cm sec^-1</p> | |
| 1609. |
.5moles of SO, and 5 moles of O2 are allowed toreact to form SO in a closed vessel. At theequilibrium stage 60% of SO2 is used up. Thetotal number of moles of SO2, O2 and SOs in thevessel now iIS(a) 10.0(c) 10.5(b) 8.5(d) 3.9 |
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| 1610. |
Find the equations of the straight lines passing through the point (1,2) and making an angle of60° with the line 3x+y+2 02. |
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| 1611. |
covered y the body in this timeAns Data100 m) A body moves in a straight line with a |
| Answer» <p>image is not not clear and also specify the question</p> | |
| 1612. |
Give four examples of adjacenilangExample: Angles between the spokes at the centre of a cycle wheel. |
| Answer» <p>1.angles between spokes at the joint wheel2.angles between spokes switch off a fan3.angles between spokes at the ashoka chakra 4.angles between spokes at the hand of clock</p> | |
| 1613. |
ow our body gets energy is shown by n fow-chart. Seleet the properalternative,STARTO, comes in bloodDigepted food comes in bloodSupply energy to boolycb Reapiratory ayatem Cireulatory system Blood circulation Production of CO Respiratory aystem Digestive system Blood circulation Slow burningD Digeutive aystem Respiratory aystem Slow burning Blood circulation |
| Answer» <p>Option c is correct here. </p> <p>thanks bro</p> | |
| 1614. |
How can you immerse the bottle inwater? |
| Answer» <p>When we immerse an empty plastic bottle in a bucket of water, the upward force (upthrust or buoyant force) exerted by water on the bottle is greater than its own weight, therefore it comes above the surface of water. To keep the bottle completely immersed, an external force which is equal to the difference between the upward force and the weight of the bottle, must be applied on the bottle in downward direction. This is because the upthrust on the bottle due to water must be balanced.</p> | |
| 1615. |
8. How can you show or find out the following(a) The presence of living organisms in a soi(b) The presence of water in soil(c)(d) The presence of particles of different sizes in soil(e) The percolation rate of water in a soil(f) The amount of water absorbed by soilThe amount of water (moisture content) present in soil |
| Answer» <p>(a) </p> <p>list out the organisms found in soil </p> | |
| 1616. |
Percolation |
| Answer» <p>Percolation is the process of a liquid slowly passing through a filter. It's how coffee is usually made. Percolation comes from the Latin word percolare, which means "to strain through." Percolation happens when liquid is strained through a filter, like when someone makes coffee.</p> | |
| 1617. |
No1. Do atoms normally exist independently, but molecules do not?2. Is an atom electrically neutral?3. Does the proton have a negative charge?4. Is the neutron an electrically charged particle?5. Do all nonmetals ordinarily exist in the gaseous state?YesYesYesYesYesNoNoNoNo |
| Answer» <p>no atom hai ji nahi jante hai kyay ji paaji</p> | |
| 1618. |
wer the following queshons il UnUWhat are periodic and non periodic motions? Give three examples of eachtibuse da What were the units used in ad for measurement calle |
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| 1619. |
2 Diferentiate between regular and diffused reflection. Does diffusedreflection mean the failure of the laws of reflectionbotihe following whether regular or diffused reflection |
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| 1620. |
__________ are also called green plants, because they produce their own food by synthesizing them. |
| Answer» <p>Autotrophs</p> | |
| 1621. |
WORKSHEET 1Multiple Choice Questions (MCQs):. What are the elements of the weather?i) HumidityO ) Rainfalliii) Wind speediv) All of these |
| Answer» <p>All of these are the elements</p> <p>I)humidity are the elements of tha weather.</p> <p>option iv is the right answer</p> <p>all of these are right option</p> <p>all of these are the right answer</p> <p>option iv is the right answer</p> <p>all of these are right option......</p> <p>all of these are right option</p> <p>All of these is right option</p> <p>all of these are the right answer</p> <p>MCQS1.What are the elements of the weatheranswer is..........all of these</p> <p>option (d) is a correct answer</p> <p>options 4is the correct</p> <p>All of these is the right answer </p> <p>4th option all of these</p> <p>All of these is the correct answer</p> <p>all of these above is correct answer</p> <p>all 4 is the right answer </p> <p>d.all of thesebecause all are present in our environment</p> <p>iv is correct answer</p> | |
| 1622. |
State corresponding angle Axiom? |
| Answer» <p>TheCorresponding AnglesPostulatestatesthat, when two parallel lines are cut by a transversal , the resultingcorresponding anglesare congruent .The converse is also true; that is, if two lines and are cut by a transversal in such a way that thecorresponding anglesformed are congruent , then l ∥ m .</p> | |
| 1623. |
. Force of friction is a ____________________force.The amount or the strength of force is called its ____________ |
| Answer» <p>1. Force of Friction is a Sliding Force.2. The amount or the strength of force is called its Magnitude of force.</p> | |
| 1624. |
7) Define centrifugal force. State any two examples of centrifugal forcelinht What are the conditions of Fresnel and Fraunhofe |
| Answer» <p>InNewtonian mechanics, thecentrifugal forceis aninertial force(also called a "fictitious" or "pseudo" force) directed away from the axis of rotation that appears to act on all objects when viewed in a rotatingframe of reference.</p><p>The concept of centrifugal force can be applied in rotating devices, such ascentrifuges,centrifugal pumps,centrifugal governors, andcentrifugal clutches, and incentrifugal railways,planetary orbitsandbanked curves, when they are analyzed in arotating coordinate system. The term has sometimes also been used for thereactive centrifugal forcethat is a reaction to acentripetal force.</p><p>Example:Vehicle driving round a curveStone on a string</p> | |
| 1625. |
________is the largest gland in human body. |
| Answer» <p>Liver</p> | |
| 1626. |
Out of the following four dimensional quantitieswhich one qualifies to be called a dimensionalconstant?a) Acceleration due to gravityb) Surface tension of waterc) Weight of a standard kilogram massd) The velocity of light in vacuum |
| Answer» <p>these all are dimensional constants because all of them have dimensions</p> | |
| 1627. |
14. A force of 6N acts on a body at rest of mass 1 kg. During this time, the body attains a velocity of30 m/s. The time for which the force acts on the body is-(A) 10 seconds(B) 8 seconds(C) 7 seconds(D)5 seconds |
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| 1628. |
Two men with we ua staircase in times in the ratio 11: 9. The ratiof power of first to that of second isights in the ratio 5 : 3 run15(2)9 (4)15 |
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| 1629. |
3.How many meters are in a Kilometer? How many Kilometers are in a meter? |
| Answer» <p>1km = 1000m 1m = 0.001km</p> | |
| 1630. |
Why do solids have a definite volume? |
| Answer» <p>The intermolecular force of attraction make the particles of solid closely packed and force them to only oscillate at their fixed positions. These give solids a definite volume</p> | |
| 1631. |
Vhat weight of each element is present in 1.5 moles of sodium sulphite, Na,SO,?Atomic masses : Na-23 u ; S = 32 u ; O = 16 u)toms |
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| 1632. |
SMTWPogo : DataIn 10th class Sciencewhat is Heridi ty? |
| Answer» <p>The transmission of characters from parent to their offsprings is known as heredity.</p> <p>Heredity is the transfer of biological characters from one generation to another generation via genes.</p> | |
| 1633. |
Which hybrid orbitals are used by carbon atoin the following molecules T(a) Cll,-CH3 (b) CH -CH-CE,Q. 30.(e) CH,COOH |
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| 1634. |
What is the main cause of flood |
| Answer» <p>1. Heavy rain2.overflowing rivers3.broken dams4.urban drainage basins5.tsunamis6.melting snow of ice</p> | |
| 1635. |
What is tge difference between flood and tsunami |
| Answer» <p>Unlikefloods,tsunamisare not associated with weather. In fact they are formed by earthquakes which are in turn caused by the shifting of tectonic plates.Floodsare created by weather not earthquakes.</p> <p>The difference between flood and tsunami is that flood is a (usually disastrous) overflow of water from a lake or other body of water due to excessive rainfall or other input of water while tsunami is a very large and destructive wave, generally caused by a tremendous disturbance in the ocean, such as an undersea earthquake or volcanic eruption.</p> <p>Unlikefloods,tsunamisare not associated with weather.Infact they are formed by earthquakes which areinturn caused by the shifting of tectonic plates.Floodsare created by weather not earthquakes.</p> <p>Flood is caused by the works and tsunami is caused by a huge wave caused in oceans.</p> | |
| 1636. |
Give reasons for the following statements:1. The water in seas and oceans cannot be used directly for drinking orirrigation. |
| Answer» <p>Seawater is toxic because your body fails eventually when it has to try to get rid of the salt that comes from sea water. Your body normally gets rid of excess salt by having the kidneys produce urine, but it needs freshwater to dilute the salt in your body for the kidneys to work properly. Normally that is not a problem, as you are always drinking water and eating food with water. Tissue in your body also contains freshwater that can be used. But if there is too much salt in your body, you kidneys cannot get enough freshwater to dilute the salt and your body will fail.</p> | |
| 1637. |
3) What is the site of photosynthesis in green plants? |
| Answer» <p>Chloroplasts are the actual sites for photosynthesis. All green parts of a plant are involved in photosynthesis. Leaves are the most important organs of photosynthesis. In xerophytes like Opuntia, the stem is green and it performs photosynthesis. Over half a million chloroplasts are present in one square millimetre of a leaf. It measures about 4 to 6 micron. Atypical chloroplast of higher plants is discoid shaped.It is a double membrane bound organelle containing chlorophyll, carotenoid, xanthophyll, cytochrome, DNA, RNA, manganese, etc. Chloroplasts are generally considerably larger than mitochondria.The space enclosed by the envelope is filled with matrix called stroma. In the stroma, many grana are embedded. In each granum, several disc shaped lamellae are found. These disc shaped structures are called thylakoids. They resemble a stack of coins. This structure is known granum. Generally a chloroplast contains 40 to 60 grana. The photosynthetic pigments are found in grana. The stroma contains circular DNA, RNA and enzymes for starch synthesis.</p> <p>chloroplast are the actual size for photosynthesis. Paul green parts of a plant are involved in photosynthesis. Les are the most important organ of photosynthesis. leaves are the. inside a force like.over half a million chloroplasts are present in on square millimetre of actual </p> | |
| 1638. |
D. Choose the odd one out from the following:1. Photosynthesis, leaves, stomata, nitrogen2. Algae, green plants, autotrophs, saprotrophs3. Chloroplasts, green plants, stomata, carbon dioxide4. Nitrogen, phosphorus, iron, water5. Sunlight, chlorophyll, carbon dioxide, carbohydrate |
| Answer» <p>1. nitrogen (not involved in photosynthesis)2. saprotrophs (all others produce their own food)3. carbondioxide (all others are part of plant)4. water (all others are elements)5. carbohydrate (it is a byproduct of photosynthesis)</p> | |
| 1639. |
what is the valency of chlorinesulphur magnesium |
| Answer» <p>The electronic configuration of chlorine can be written as 2, 8, 7. 2, 8, 7 electrons are distributed in the shells K, L, M respectively. Therefore, valence electron in chlorine is 7 and it needs to gain 1 electron from the outermost orbit to attain octet. Hence, the valency of chlorine is 1.</p><p>Similarly, valency of sulphur will be 2. it's electric configuration-- 2,8,6. so,sulphur needs 2 more electrons to complete it's outermost shell.</p><p>By same process valency of magnesium is 2</p> | |
| 1640. |
X. Answer in detail1. How do plants and animals maintainthe balance of oxygen and carbon-di-oxide in air?Why is atmosphere essential for life onearth?2. |
| Answer» <p>The balance of oxygen and carbon dioxide is made due to respiration and photosynthesis. As we leave carbon dioxide and take in oxygen the balance of carbon dioxide and oxygen is made. And during the photosynthesis of plants the balance of carbon dioxide and oxygen is made.</p> <p>thank you </p> | |
| 1641. |
3.12 A ball is dropped from a height of 90 m on a floor. At each collisiothe ball loses one tenth of its speed. Plot the speed-time graph of its motionbetween t O to 12 s. |
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| 1642. |
10. on selling an article for Rs.105 a trader loses 9%. To gain 30% he should sell the article at |
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| 1643. |
Which atom does have dangling valencies?(1) Diamond(3) Fullerene(2) Graphite(4) 1 & 2 both |
| Answer» <p>graphite has dangling valencies due to presence of weak vander Wal force</p> | |
| 1644. |
SCIENCEWrite elements and their symbols in the human body with the help ofFigure. |
| Answer» <p>The fourelementsare oxygen, hydrogen, carbon, nitrogen. ... The other traceelements(less than 0.01%) are: boron (B), cadmium (Cd), chromium (Cr), cobalt (Co), copper (Cu), fluorine (F), iodine (I), iron (Fe), manganese (Mn), molybdenum (Mo), selenium (Se), silicon (Si), tin (Sn), vanadium (V), and zinc (Zn).</p> | |
| 1645. |
Write Lewis symbols for the following atoms and ons:S and S: Al and Al H and H |
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| 1646. |
9. A jeweller puts a diamond weighing 4.31 g in abox weighing 1.5 kg. Find the total weight up toappropriate number of significant figures.Ans. 1.5 kg |
| Answer» <p>Answer:</p><p>1×1022atoms Care in a 1.00 carat diamond.</p><p>Explanation:</p><p>Convert 200 mg to g.</p><p>1000 mg=1 g</p><p>200mg×1g1000mg=0.2 g</p><p>Convert carats to grams to moles.</p><p>1.00 ct=0.2 g1mol C=12.0107 g C</p><p>1.00ct C×0.2g C1ct C×1mol C12.0107g C=0.02 mol C</p><p>Convert moles C to atoms C.</p><p>1mol C=6.022×1023atoms C</p><p>0.02mol C×6.022×1023atoms C1mol C=1×1022 atoms C(rounded to one significant figure)</p> <p>Diamond weight =4.31g=0.00431kgBook weight =1.5kgBoth weight=(1.5+0.00431)kg =1.50431kg =1.5kg approx. </p> | |
| 1647. |
The base of a triangular field is three times its height. If the cost of cultivating the field atis t 14580. Find its base and height.1080 per |
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| 1648. |
Why does a solar eclipse always occur on a new moon day? |
| Answer» <p>i dont know now just go to hell </p> | |
| 1649. |
the process of falling, down of watersurface of the EarthState true (T) or false (F).1.2.B.epwells are special to western India.Exploitation of groundwater leads toStdepletion of the water table.Calcium hydrogen carbonate is insoluble in water.Through infiltration, surface water seeps3.4.down the soil.Water is made available on the surface ofthe earth through water cycle.5. |
| Answer» <p>1) True2) True3) false4) true5) true</p> | |
| 1650. |
1. Which of the following is the unit ofelectric chargea) Coulombc) Abcoulombb) Stat-coulombd) All the above |
| Answer» <p>Electric charge has the dimension electric current time. The SI derived unit of electric charge is thecoulomb, which is defined as anampere second</p> | |