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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.
| 1551. |
Anddlyof a room are 11.2 m by 9 m. The floor of the room is to be covered byh measuring 24 cm by 24 cm. Find the total number of tiles required.is the cost of tiling the floor at R 106 per tilerWhat s the floor 11.2 m -(11.2x 100) em 1120 cm.marth o0 o -(9x 100) cm- 909 m |
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| 1552. |
9. Name A,B,C,D,E and F in the following diagram showingchange in its stateIncrease heat anddecrease pressure(SOLIDLIQUIDGASDecrease heat andincrease pressure |
| Answer» <p>A=MELTING B=EVAPORATION C=CONDENSATION D=FREEZING E=SUBLIMATION F=DEPOSITION </p> | |
| 1553. |
1. Define energy2.Give an example where heat is converted into sound and light energy1 atediron, wate |
| Answer» <p>Light Bulb!Light bulb works on the principle of “Incandescence</p> | |
| 1554. |
25. .A solution of a,substance X is used for white washing.1) Name the stubstance 'x" and write its formula2) Write the reaction of the substance "X" named with water. |
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| 1555. |
2 V13 |
| Answer» <p>NH3 ...... ammonia gas</p> | |
| 1556. |
CH,COOH |
| Answer» <p>Acetic acid, systematically named ethanoic acid, is a colourless liquid organic compound with the chemical formula CH₃COOH</p> | |
| 1557. |
(1) CH-CH-CH-CHCHa(1CH3 OH CH3 |
| Answer» <p>IUPAC name is </p><p>2,2-dimethyl-4-methyl-pentan-3-ol</p><p>or </p><p>2,2,4-trimethyl-pentan-3-ol</p> | |
| 1558. |
What is an oxidation reaction? Identify in the following reactiona) the substance oxidised andb) the substance reducedZnO + C → Zn + Co |
| Answer» <p>Oxidation reaction is a reaction that involves addition of oxygen to a substance and removal of hydrogen from a substance.</p><p>(i) C is oxidised to CO because oxygen is added.</p><p>(ii) ZnO is reduced to Znbecause oxygen is removed.</p> <p>oxidation reaction is the reaction that involves addition of oxygen to substances and removal of hydrogen from a substance </p> | |
| 1559. |
CHs(1CH-CH- CH-C-CHhsCH3 OH CH |
| Answer» <p>IUPAC name is </p><p>2,2-dimethyl-4-methyl-pentan-3-ol</p><p>or </p><p>2,2,4-trimethyl-pentan-3-ol</p> | |
| 1560. |
swer the following inWhat are saprophytes and parasites?rial features related to t |
| Answer» <p>Parasite :-1. The organism, which depends upon other organism for its nourishment and growth, is known as parasite.</p><p>2. It has intracellular digestion.</p><p>3. It causes harm to the organism.</p><p>Saprophyte :-1. The organism, which grows on dead and decaying material for its growth, is known as saprophyte.</p><p>2. It shows extracellular digestion.</p><p>3. It does not depend on living host.</p> | |
| 1561. |
e.Saprophytes are organisms whichdoad and des |
| Answer» <p>which get food and energy from dead and decaying organic matter.</p> | |
| 1562. |
please can you explain me the mole concept in a easier way |
| Answer» <p>What is Mole?</p><p>Atoms and molecules are too small to count. To solve this problem their numbers are expressed in terms of Avogadro’s number (NA= 6.023 1023). Mole is the number equal to Avogadro’s number just like a dozen is equal to 12, a century means 100, a score means = 20.</p><p>Mole can be defined as a unit which represents6.023x10^23particles of same matter.</p><p>A mole (symbol mol) is defined as the amount of substance that contains as many atoms, molecules, ions, electrons or any other elementary entities as there are carbon atoms in exactly 12 gm of C. The number of atoms in 12 gm ofC is called Avogadro’s number</p> <p>thanks </p> | |
| 1563. |
CH3 - Ch 042 -OGHSIUPAC name ofOHA) 1-Ethoxy propan-2-ol(B) 3-Ethoxy propan-1-ol F(C) Ethoxy pentanol(D) 2-hydroxy-3-pentanone |
| Answer» <p>a is the correct options</p> <p>a is the correct answer</p> <p>option a is the right answer.</p> <p>A is the correct answer</p> | |
| 1564. |
Where are poles of a bar magnet located? |
| Answer» <p>the poles of bar magnet located in South or north pole</p> | |
| 1565. |
6.Where are poles of a bar magnet located? |
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| 1566. |
6.Where are poles of a bar magnet located?to indicate its poles. How wo |
| Answer» <p>at the both end of magnets</p> | |
| 1567. |
1. The Pascal law states that liquid at rest applies pressure at a point isin all directions.a) Sameb) Un-same c) Not matchingd) Matching but not equal |
| Answer» <p>Correct option: aReason: Pascal's law saysthatpressure appliedto an enclosedfluidwill be transmitted without a change in magnitude toevery pointof thefluidand to the walls of the container. Thepressureatany pointin thefluidis equal inall directions.</p><p>Please hit the like button if this helped you</p> | |
| 1568. |
A cubical block is floating in a liquid with one fourthodf ts volume immersed in the liquid. If whole of thesystem accelerates upward with acceleration g4,he fraction of volume immersed in the liquid will be |
| Answer» <p>The fraction of volume immersed in the liquid will be same as before i.e 1/2.</p><p>Fraction of volume immersed in the liquid </p><p>Vin=(ρ/σ)V</p><p>i.e. it depends upon the densities of the block and liquid. So there will be no change in it if system moves upward or downward with constant velocity or some acceleration</p> | |
| 1569. |
3. Fill in the blanks using properties of addition:no |
| Answer» <p>Let value to be find = x</p><p>5/6 + x = 5/6x = 5/6 - 5/6x = 0</p><p>Therefore,Value to be added = 0</p> <p>5/6 + x =5/6x=5/6 - 5/6x=0</p> <p>Its answer is 0 and correct answer</p> <p>0 is added to 5/6 to get 5/6</p> <p> 0 +5/6 =5/6</p><p>......</p> <p>Answer will be 0(zero)</p> <p>0 is the right answer to this question</p> <p>let the x be the no . 5/6 + x = 5/6 5/6 -5/6 = xx = 0</p> <p>0 is answer of this qestion</p> <p>0 is correct answer of the qestion</p> <p>o is added to 5/6 toget 5/6 </p> <p>o is added to get the no...</p> <p>0 is the correct answer</p> <p>-5/6. is the ans</p> <p>0 is the correct answer</p> <p>5/6+x=5/6thus,x=5/6-5/6hence,x=0</p> <p>05/6=5/6 =00=answer</p> <p>0 is the right answer</p> <p>Correct Answer is 0.</p> <p>-5/6 is the correct answer</p> <p>-5/6 is the correct answer</p> <p>let no be x5/6+x=5/6x=5/6-5/6x=0</p> <p>Answer will be 0 it is correct answer </p> <p>the answer 0 because any number multiple with 0 is same number</p> <p>0is the best answer because 5/6+0=5/6</p> <p>5/6+0=5/6 it is correct answer</p> <p>Let the value to be find be = x</p><p>5/6+x=5/6x=(5/6)-(5/6)x=0</p><p>Therefore value to be added = 0</p> <p>0 is the best answer for the question </p> <p>0</p> <p>Let the number to be added be xATQ,5/6 + x = 5/6x= 5/6 - 5/6x= 0So, the number to be added is 0.</p> <p>In this case, we have to use “additive identity property”. That is, Any number added with '0' we get the same number. According to problem,5/6+0=5/6therefore the answer is '0'.</p> <p>the answer is ZERO. ok by </p> <p>x=5/6-5/6=0so, it's the answer</p> <p>the answer to the above question is 0 </p> <p>0 is its correct answer</p> <p>5/6 +5/6=5/6 h bhai ok</p> <p>0is added to get 5/6</p> <p>when we put 0/1 then we can find and get result 5/6 easily </p> <p>0 is the final and right answer </p> <p>5/6+X=5/6X=5/6-5/6X=0</p> <p>0 is the correct answer is yes Are no </p> <p>x=0 is the answer ,5/6-5/6=0</p> <p>o is correct answer according to your question </p> <p>0 +5/6=5/6.........</p> <p>0 is the best answer 😄😄😄</p> <p>5/6+x=5/6x=5/6-5/6x=0therefore the required no is 0</p> <p>5/6 + 0 =5/6 is correct answer because if the zero is added in any number the answer is the same number</p> <p>0 is correct answer according to your question </p> <p>5/6+0=5/6 , add 0 equal to 5/6</p> <p>5/6 + x = 5/6 x= 5/6-5/6 </p><p>x = 0</p> <p> 5/6+x=5/6x=5/6-5/6x=0</p> <p>answer is x hai ..............,.</p> <p>5/6+0=5/6so this ans is 0</p> <p>let the value of blank be x then,</p><p>5/6 + x = 5/6x = 5/6 - 5/6x = 0</p><p>So, the value of x is 0.</p> <p>5/6+x=5/6x=5/6-5/6x=0so the x value is 0</p> <p>5/6+A=5/6A=5/6-5/6A=0</p> <p>000000000000000000000000000👍👍👍👍👍👍👍👍👍👍👍</p> <p>0is correct and best answer</p> <p>Let value to be find =x</p><p>5/6+x=5/6X=5/6 - 5/6X=0</p><p>ThereforeValue to be added=0</p> <p> 5/6 + 1 = 5/6. The answer is 1 or 1/1</p> <p> Find value of X = 5/6 - 5/6 = 0 Therefore the answer is 0</p> <p> answer is 0 it's so simple</p> <p>0 is a additive identity of rational number show the answer of this question is zero</p> <p>the value of addition is 0</p> <p>0 is additive identityadd 0 to null you get nullso 5/6+0=5/6</p> <p>the answer may be =0</p> <p>Let value be x</p><p>5/6+ x =5/6x =5/6 - 5/6x = 0</p><p>Therefore,x = 05/6 + _0_ =5/6</p> <p>we 5/6 +__ =5/6</p><p>5/6 + 1/1 = 5/6</p> <p>3.Fill in the blanks using properties of addition :a) 5/6 +0=5/6</p> <p>0 is the suitable answer</p> <p>Let the number be x5/6+x=5/6x=5/6-5/6x=0Therefore 0 is the number. </p> <p>let the value be x5/6+x=5/6x = 5/6 - 5/6x = 0</p> <p>Answer is 0 because if we add 5/6 to 0 then the answer will be 5/6</p> <p>5/6 + x =5/6x = 5/6 - 5/6x = 0therefore5/6 +0 = 5/6</p> <p> -5/6 will be the answer</p> | |
| 1570. |
.A convex lens is of focal length2 metres. Whatisthepowerof2lens ? |
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| 1571. |
7. The acceleration of a body is 10 ms 2. Express it inAns. 1.296 x 105 km h 2km h 2 |
| Answer» <p>1m = 1/1000 km &1sec. = 1/3600 hrso 10 m/s-2= 10 * 1/1000 * (3600)2km/hr2129600 km/hr21.296x 10^5 km/hr2</p> | |
| 1572. |
Why do you fall in the forward direction when a moving bus brakes to a stop and fall backwards when it accelerates from rest? |
| Answer» <p>In a moving bus, passengers are in motion along with bus. When brakes are applied to stop a moving bus, bus comes in the position of rest. But because of tendency to be in the motion a person falls in forward direction.</p><p>Similarly, when a bus is accelerated from rest, the tendency to be in rest, a person in the bus falls backwards.</p> | |
| 1573. |
ied R and L shells. Explain10. If bromine atom is available in the form of, say, two isotopesĺBr (49.7%) and ăeBr (50.3%), calculatethe average atomicmass of bromine atom. |
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| 1574. |
Example 1. Two particles of mass 1 kg and 0.5kg are moving in the same direction withspeed of 2m/sec and 6m/sec respectively ona smooth horizontal surface. The speed ofcentre of mass of the system is |
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| 1575. |
Example 1. Two particles of mass 1 kg and 0.5 Skg are moving in the same direction withspeed of 2m/sec and 6m/sec respectively ona smooth horizontal surface. The speed ofcentre of mass of the system is |
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| 1576. |
otalExample 1. Two particles of mass 1 kg and 0.5kg are moving in the same direction withspeed of 2m/sec and 6m/sec respectively ona smooth horizontal surface. The speed ofcentre of mass of the system is |
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| 1577. |
17.Find the focal lenA doctor has prescribed a corrective lens of power + 1 .5 D.the lens. Is the prescribed lens diverging or converging? |
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| 1578. |
1. Convert the followingtemperature to celsius scale:a. 300 Kb. 573 K |
| Answer» <p>300kelvin =300-273=27</p> | |
| 1579. |
Name thc two connries wheremopical raunfionests ane found |
| Answer» <p>The largest rainforests are in the Amazon River Basin (SouthAmerica), theCongoRiver Basin (western Africa), and throughout much ofsoutheast Asia.</p> <p>Other countries that have large areas of rainforest includeBolivia,Cameroon,Central African Republic,Ecuador,Gabon,Guyana,India,Laos,Malaysia,Mexico,Myanmar,Papua New Guinea, Republic ofCongo,Suriname, andVenezuela.</p> | |
| 1580. |
can be changes when different substances are i!505. Wce-6 |
| Answer» <p>when different substances a physical or chemical change will take place</p> | |
| 1581. |
5. Lunch box:List three objects each which could be made from the following materials:1. Cotton: ()2. Plastic:(3. Paper: (4. Leather: (05. Glass:6. Steel: ()7. Copper: (). Rubber: (i) |
| Answer» <p>1) clothes, bag, Saree2) utensil, wire, toys3) notebooks, money(💴) , toilet paper4) bags, shoes, clothes5) utensil, mirror, kite flying thread6) pillar, utensils, blade7) wire, utensil, handles8) eraser, bags, rubber bands</p> | |
| 1582. |
How many decimetre are equal to 1 metre?? |
| Answer» <p> 1 decimeter is 0.1mhence decimeter^2=0.01m^2</p> | |
| 1583. |
hieman cover 62.5 km in one hour. How much distance can it cover in 18 hours |
| Answer» <p>xjxjzjzhxhddhsjajxcjxjxjxxjxjzwj bxjxjznzxjciddnxuwcjdjdxcixjzzj</p> <p>A car cover 62.5 km in 1 hourso car cover in 18 hours= 62.5*18=1125</p> <p>1125 the correct answer of the given question</p> <p> The bus can cover distance in 18 hours is=10.950km</p> | |
| 1584. |
11.The moment of inertia of a door of mass m, length 2 t and width (about its longer side ismt2311mt2(A)24(B) 5m2Ye)(D) none of these24 |
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| 1585. |
14. A pendulum bob of mass 50 g is suspended from theceiling of an elevator. Find the tension in the string ifthe elevator (a) goes up with acceleration 1.2 m/s(b) goes up with deceleration 1.2 m/s , (e) goes up withuniform velocity, (d) goes down with acceleration1-2 m/s , (e) goes down with deceleration 1.2 m/s and4fi goes down with uniform velocity |
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| 1586. |
What are the major groups of microorganisms |
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| 1587. |
5.What are theWhat are the major groups of microorganisms?tims which can fix atmosp |
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| 1588. |
What do you mean by the statement 'the atmosphericpressure is 1 atm. State its value in pascal. |
| Answer» <p>Atm (short for atmosphere) is a unit of pressure. It is defined to be equal to the pressure at sea level in the internationally accepted standard atmosphere model. It is equal to a pressure of 101,325 N/m^2 = 101,325 Pa = 1.01325 bar = 1013.25 mbar = 1013.25 hPa = 14.6959 psi = 29.9213 inches of mercury</p><p>If the air pressure happens to be equal to 1 atm, then it means that it happens to be equal to the specific pressure we have agreed to use as the standard pressure at sea level. The real pressure in the air varies, so it’s hardly ever that the pressure would beexactlyequal to 1 atm.</p> | |
| 1589. |
3.Impact of the abiotic components on the ecosystem |
| Answer» <p>Abiotic factors come in all types and can vary among different ecosystems. For example, abiotic factors found in aquatic systems may be things like water depth, pH, sunlight, turbidity (amount of water cloudiness), salinity (salt concentration), available nutrients (nitrogen, phosphorous, etc.), and dissolved oxygen (amount of oxygen dissolved in the water). Abiotic variables found in terrestrial ecosystems can include things like rain, wind, temperature, altitude, soil, pollution, nutrients, pH, types of soil, and sunlight.</p><p>The boundaries of an individual abiotic factor can be just as unclear as the boundaries of an ecosystem. Climate is an abiotic factor - think about how many individual abiotic factors make up something as large as a climate. Natural disasters, such as earthquakes, volcanoes, and forest fires, are also abiotic factors. These types of abiotic factors certainly have drastic effects on the ecosystems they encounter.</p> | |
| 1590. |
g Answer Type Questions-Answer in about 40 words:1. Differentiate between biotic and abiotic components of the environment. |
| Answer» <p>Comparison chart</p><p>Abiotic versus Biotic comparison chartAbioticBioticIntroductionIn ecology and biology, abiotic components are non-living chemical and physical factors in the environment which affect ecosystems.Biotic describes a living component of an ecosystem; for example organisms, such as plants and animals.ExamplesWater, light, wind, soil, humidity, minerals, gases.All living things — autotrophs and heterotrophs — plants, animals, fungi, bacteria.FactorsAffect the ability of organisms to survive, reproduce; help determine types and numbers of organisms able to exist in environment; limiting factors restrict growth.Living things that directly or indirectly affect organisms in environment; organisms, interactions, waste; parasitism, disease, predation.AffectsIndividual of a species, population, community, ecosystem, biome, biosphere.Individual of a species, population, community, ecosystem, biome, biosphere</p> <p>Examples ofabiotic factorsare water, air, soil, sunlight, and minerals.Biotic factorsare living or once-living organisms in the ecosystem. These are obtained from the biosphere and are capable of reproduction. Examples ofbiotic factorsare animals, birds, plants, fungi, and other similar organisms</p> <p>Abioticfactors refer to non-living physical and chemical elements in the ecosystem. Abiotic resources are usually obtained from the lithosphere, atmosphere, and hydrosphere. Examples of abiotic factors are water, air, soil, sunlight, and minerals.</p><p>Bioticfactors are living or once-living organisms in the ecosystem. These are obtained from the biosphere and are capable of reproduction. Examples of biotic factors are animals,birds, plants, fungi, and other similar organisms.</p> <p>abiotic components of environment are </p> <p>abiotic components of environment arethe non living organisms and biotic components of environment are living organisms </p> | |
| 1591. |
3. Animals that live on land are calledanimals.The development of plants from seeds isknown as4.5. The abiotic components of a habitat arethings |
| Answer» <p>terrestrial, germination, non living </p> | |
| 1592. |
1. What would you do to make a metallic object regain its lustre after it has los2. Name two hard and two soft solids. |
| Answer» <p>2. quarter, rock, screw (hard) cotton ball,soft fabric, small pillow (soft)</p> | |
| 1593. |
molarity and mole frationo esch |
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| 1594. |
my qution is that what is a satirical name of human man |
| Answer» <p>Satire, artistic form, chiefly literary and dramatic, in which human or individual vices, follies, abuses, or shortcomings are held up to censure by means of ridicule, derision, burlesque, irony, parody, caricature, or other methods, sometimes with an intent to inspire social reform. Satire is a protean term.</p> | |
| 1595. |
If tan-1 x + tan-1 y = π/2 , prove that xy = 1 |
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| 1596. |
ify the following as amorphous or crystalline solids: Polyurthalene, benzoic acid. teflon. potassium nitrate, cellophane. pde, fibre glass, copper. |
| Answer» <p>thanqq</p> | |
| 1597. |
The sides of a rectangular park are in the ratio 4:3. If its area is 1728m2, find the cost of fencing it atmetre20 per2.caidi 594 m2nd its lent is 64 m A boy runs around the field at the rate of 3 km |
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| 1598. |
4. From the sum of 2/2 + 3yz,-y2-yz-22 and yz + 2z2, subtract the sum of 31.2and -y t yz + z2 |
| Answer» <p>2y*y+3yz-y*y-yz-z*z+yz+2z*z-(3y*y-z*z-y*y+yz+z*z) = (y*y+3yz+2z*z)-(2y*y+yz) = y*y+3yz+2z*z-2y*y-yz = 2z*z+2yz-y*y </p> | |
| 1599. |
fefowa aRT H命 (Name timage of an object)he mirror that can give an erect and enlarged可Uf RTTar 히 (Name the substance which, on treating with Chorine, |
| Answer» <p>Whencalcium hydroxideis treated with chlorine gas it yields bleaching powder. It is shown in the following chemical reaction.</p> | |
| 1600. |
8, Time from one sunrise to the next is:(A) One Month(C) One Hour(E) of these(B) One Day(D) One Second |
| Answer» <p>Ans :- A day, which is thetime from one sunrise to the next sunrise—one complete rotation of the Earth. option (b) is correct</p> | |