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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.
| 3951. |
Fill up the blanks in the following:(a) The process of changing of water into its vapour is called ........... |
| Answer» <p>evaporation is the answer</p> | |
| 3952. |
Fill up the blanks in the following:(a) The process of changing of water into its vapour is called ...............1. |
| Answer» <p>Evaporationis theprocessby which waterchanges from a liquid to a gas or vapor.</p> | |
| 3953. |
6. Name the microorganisms which can fix atmospheric nitrogen in the soll. |
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| 3954. |
(b) The process of changing water vapour into water is called |
| Answer» <p>Condensation isthe processby whichwater vaporin the air is changedinto liquid water. .</p> | |
| 3955. |
(b) The process of changing water vapour into water is called ................. |
| Answer» <p>Condensation isthe processby whichwater vaporin the air is changedinto liquid water. .</p> | |
| 3956. |
Why is water called a universal solvent? |
| Answer» <p> because water dissolve everything</p> <p>because water dissolve everything....</p> <p>Wateris capable of dissolving a variety of different substances, which is why it is such a goodsolvent. And,wateriscalledthe "universal solvent" because it dissolves more substances than any other liquid. ... This allows thewatermolecule to become attracted to many other different types of molecules.</p> <p>water is called universal solvent because it dissolve everything like when we add poweder inti it dissolve</p> <p>because it dissovles in most of the things</p> <p>simple water 💧 dissolve in everything</p> <p>because water dissolved everything is the correct answer of the given question</p> <p>because it dissolve more solutes in comaparison to other solvents and it is aldo easily available.</p> <p> because it dissolve most of the solutes.</p> <p>water is called universal solvent because it dissolves more dubstances than any other liquid</p> <p>water is called a universal solvent because many substances can dissolve in it.</p> <p>water is known as the universal solvent because it dissolves many more substances thanks any otherliquid</p> <p>Because water can dissolve many solute particles </p> <p>water is capable of dissolve a variety of substance</p> | |
| 3957. |
2C6H6(l) +1 502(g)-12CO2(g) + 6H2O(g)2 (g)(A) 74 I(B) 11.2 1(C) 22.4 L(D) 84 L |
| Answer» <p>Step 1: we need to find out 39g of liquid benzene is equivalent to how many moles of the liquid.</p><p>Moles = mass/molar massmass = 39gmolar mass= 78</p><p>Therefore moles of liquid benzene = 39/78 = 0.5 moles</p><p>Step 2: Use the equation plus the moles of the liquid benzene to find the moles of O₂ used.</p><p>2C₆H₆+15O₂--->12CO₂+ 6H₂O</p><p>We see that for every 2 moles of liquid benzene we require 15 moles of O₂ for the reaction. Thus;</p><p>If 2 moles benzene needs 15 moles of oxygen,Then 0.5 moles will need 15ₓ 0.5/2 = 3.75 moles of oxygen.</p><p>Step 3: Calculate the volume of oxygen required from its moles calculatedThe ideal gas law states that 1 mole of an ideal gas will occupy 22.4 liters at STP(standard temperature and pressure)</p><p>Therefore if 1 mole of oxygen occupies 22.4 liters,Then 3.75 moles of oxygen will occupy; 22.4 litersₓ 3.75 moles/1 mole = 84 liters</p><p>Therefore 84 liters of oxygen is what is required to completely burn 39g of liquid benzene.</p> | |
| 3958. |
1 Calculate the mass percentage of benzene (C6Hs) and carbon tetrachloride(CCl) if 22 g of benzene is dissolved in 122 g of carbon tetrachloride. |
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| 3959. |
М.Р.Desale /Physic.20) Show that, magnitude of crossproduct of two vectors is equal to area ofparallelogram. |
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| 3960. |
According to equationC6H6(l)+15/2 O2(g)---->6CO2(g)+3H2O(l)AH-3264.4 KJ mol-1 the energy evolved when7.8 g benzene is burnt in air will be(1) 163.22 KJ(3) 3.264 KJ(2) 32.64 KJ(4) 326.4 KJ |
| Answer» <p>For 1 moles of benzene the value of. ∆H = -3264.4KJ/mol</p><p>molar mass of benzene is = 78gm</p><p>so, the energy evolved in 7.8 gm or (7.8/78) = 0.1 moles is </p><p>= 0.1*(3264.4) = 326.4KJ</p><p>option D.</p> | |
| 3961. |
hat is a displacement reaction ? What happens when aluminium is dipped in copper sulphatesolution? |
| Answer» <p>Displacement reaction is a chemical reaction in which a more reactive element displaces a less reactive element from its compound. Both metals and non-metals take part in displacement reactions.</p><p>Example : Reaction of iron nails with copper sulphate solution.</p><p>Aluminium displaces the copper from its salt solution to form Aluminium Sulphate. The colour of the solution will change from blue to transparent and copper will be observed as a layer on the Aluminium piece.</p><p>CuSO4 + Al------) Al2(SO4)3 + Cu</p> | |
| 3962. |
1. Compare the properties of electrons, protons and ne |
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| 3963. |
Which of the things in the following list are nonliving? |
| Answer» <p>please give me the list of the things that are non living</p> | |
| 3964. |
In an a(A) 2 %diabatic expansion of air the volume increases by 5%. The percentage change in pressure is:(B) 3 %(C) 5 %(D) 7 % |
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| 3965. |
A very strong wind is called _____ (breeze/storm) |
| Answer» <p>A very strong wind is called as storm.</p> | |
| 3966. |
5. A strong wind can blow off the roofs of buildings. Explain how. |
| Answer» <p>When high speed winds are blown over any kind of roof the pressure of wind reduces there but the air pressure under the roof is still the same which pushes the roof and results in the roof to blow off.</p> | |
| 3967. |
5 A strong wind can blow off the roofs of buildings. Explain how |
| Answer» <p>High speed winds reduces the air pressure above the roof. While the air pressure below the roof is high which pushes the roof upwards. This is the reason why the roofs are blown off during high winds. </p> | |
| 3968. |
Valence bond theory was proposed by |
| Answer» <p>Louis Pauling and John C. Slater</p> <p>thanks</p> | |
| 3969. |
numerical |
| Answer» <p>numerical - relating to or expressed as a number or numbers.</p> <p>thank you</p> | |
| 3970. |
coal |
| Answer» <p>Coal is a flammable black hard rock used as a solid fossil fuel. It is mainly made up of 65-95% carbon and also contains hydrogen, sulphur, oxygen and nitrogen. It is a sedimentary rock formed from peat, by the pressure of rocks laid down later on top. Coal is created from the remains of plants that lived and died about 100 to 400 million years ago when parts of the earth were covered with huge swampy forests. Coal is classified as a nonrenewable energy source because it takes millions of years to form.</p> | |
| 3971. |
B.Most desert plants havewaterstems that allow them to store more |
| Answer» <p> Breathing will fill the blank in the sentence</p> | |
| 3972. |
A.Fill in the blanks.1.are the long horizontal stems which grow on the surface of soil. |
| Answer» <p>Stolon - Horizontal stems that run at or just below the soil surface with nodes that root and long internodes, the ends produce new plants</p> | |
| 3973. |
. What do you understand by conductors and insulators? Give two examples of each. |
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| 3974. |
3) Which of these contains the water-carrying tubes and the food-carrying tubes?A) LeavesB) StemsC) RootsD)O All of the above |
| Answer» <p>the answer is b. stems</p> <p>The right answer is b stems </p> <p>d) ALL OF THE .................. </p> <p>b is the answer of the following</p> <p>b is correct answer for food carrying</p> <p>Stems is the correct answer</p> <p>the answer is b) steme</p> <p>stems is the correct answer of the given question </p> <p>This question answer is options B</p> <p>B) stems-is the correct answer</p> <p>The right answer to the question is B)stems</p> | |
| 3975. |
Co12. In which one material insulators are madeb) Rubberc) Hard rubberd) Fiberorcelain |
| Answer» <p>Insulators are made fromglass,porcelainor composite polymer materials.Porcelaininsulators are made from clay,quartzor alumina and feldspar, and are covered with a smooth glaze to shed water.Ans:a)</p> | |
| 3976. |
erent crops in a predetermined sequence. What is this4practice known as? Explain why f peas, beans on s followed by mcrops of wheat and rice and (fi) potatoes are grown tir |
| Answer» <p>Growing same kind of crops again and again could make the soil less fertile and leads to land degradationSo to maintain the fertility and the quality of soil ,farmers grow diff. crops in a field..</p> | |
| 3977. |
Homeworkts rubbed against silk clohe end of glass rod is rubbed against silk cloWhat will happen if ms rubbed agaisi sastie rod is rubbed against a woollen clothPlastic rod is rubbed against a woollen clothS.charned class rod is brought clo |
| Answer» <p>If youruba glassrodwith acloth, the charge produced on the glassrodis called positive, whereaswhen a plastic rod is rubbedwith acloth, the charge produced on theplastic rodis negative</p> | |
| 3978. |
A charged drinking plastic straw is brought near another suspended plastic straw, thatis a) similarly charged (b) uncharged. Explain what we would observe in eachcase and why |
| Answer» <p>1. In first case when charged straw brought near similar charged straw then repulsion will occur between these straws. </p><p>2. When charged straw is brought near to dissimilar charged straw, then attraction will be observed because like charges repel and unlike charges attract.</p> <p>t</p> <p>thank you so much</p> | |
| 3979. |
How do animals help in seed dispersal? |
| Answer» <p>Animals disperse seeds in several ways. First, some plants, like the burr at left, have barbs or other structures that get tangled in animal fur or feathers, and are then carried to new sites. Other plants produce their seeds inside fleshy fruits that then get eaten be an animal.The fruit is digested by the animal, but the seeds pass through the digestive tract, and are dropped in other locations. Some animals bury seeds, like squirrels with acorns, to save for later, but may not return to get the seed. It can grow into a new plant.</p> | |
| 3980. |
Numerical Problem 8A spaceship travelling in space at 300 kms', fires its engine for 15 seconds, such that its finallocity is 600 kms'. Calculate the total distance travelled by the ship in one minute starting fromthe time of firing. |
| Answer» <p>time-15dist.-300speed-300/15=20dist.in 1 min-600*20=12000</p> <p>300*15+1/2*20*15^2 this is the correct answer</p> <p> 12000 is the answer of the following</p> <p>The right answer is 12000</p> <p>12000 is the correct answer of the given question</p> <p>12000 is the right answer ......</p> <p>12000 is the correct answer </p> <p>12000 is the correct answer </p> | |
| 3981. |
rod is rubbed against a silk cloth. Which object/s gets/get charged inA glasshis process? |
| Answer» <p>When a glass rod is rubbed against a silk cloth there's a transfer of charges. When a glass rod is rubbed against silk cloth the glass rodlosesits negatively chargedatomsand theatomsget acquired by the silk cloth. Thus, glass rod gets charged positively and silk cloth gets charged negatively.</p> | |
| 3982. |
charged balloonxplain why a charged balloon is repelled by another charged buncharged balloon is attracted by a charged balloon. |
| Answer» <p>A charged balloon has the same charge as another charged balloon, so there is repulsion between them because like charges repel each other. On the other hand, an uncharged body always attracts a charged body. Therefore, an uncharged balloon is attracted by a charged balloon.</p> | |
| 3983. |
5. Sketch the reproductive parts of a hower |
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| 3984. |
4. Statesketch the reproductive parts of a flower.f nollination and cross-pollinatio |
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| 3985. |
)A flower may have either male or female reproductive parts. Sucha flower is called)The transfer of pollen grains from the anther to the stigma of thesame or of another flower of the same kind is known asThe fusion of male and female gametes is termed asSeed dispersal takes place by means of).)and |
| Answer» <p>Thanks,....... </p> | |
| 3986. |
Write "True" or "False":1. Solid has a definite shape.2. Water exists in three forms.3. Water cycle is a never-ending process4. Ice is lighter than water.5. Pure water has sweet taste. |
| Answer» <p>1. true2. true3. true4. true5. false. </p> | |
| 3987. |
hy does a charged object lose its charge when touched? |
| Answer» <p>A charged object loses its charge when touched because the charges get a path to flow through our body. The charges get transferred to our body and the object becomes neutral.</p><p>Please hit the like button if this helped you</p> | |
| 3988. |
d) spores can survive in unfavourable conditions also |
| Answer» <p>Many types of bacteria, fungi, actinomycetes, yeasts, and algaealsodevelopsporesas resting stagesto surviveperiods ofunfavorableenvironmentalconditions. ... Fungi produce diploidsporesin specialized organsknown assporangia</p> | |
| 3989. |
lol whatbleis spinning ? Hau dansapinning |
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| 3990. |
Shot1. What causes frictionre the factors or |
| Answer» <p>CausesofFriction.Frictionis a force that resists the relative motion between two objects or materials. Thecausesof this resistive force are molecular adhesion, surface roughness, and deformations. Adhesion is the molecular force resulting when two materials are brought into close contact with each other.</p> <p>but how please explain </p> | |
| 3991. |
5. How many cubic metres of earth must be dug outto sink a well which is 20m deep and has a diameterof 7 metres. If the earth so dug out is spread overa rectangular plot 28m by 11 m, what is the heightof the platform so formed? |
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| 3992. |
Why currents of approximately 0.2A are potentially fatal? |
| Answer» <p>Currents of approximately 0.2A are potentially fatal, because they can make the heart fibrillate, or beat in an uncontrolled manner.</p> <p>very thankyou</p> | |
| 3993. |
If the kinetic energy of a moving body is reduced to 81%, its momentum decreases to1)19%2) 10%3) 90%4) |
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| 3994. |
63. The dot product of two vectors A =2i-3j+ k andB= 3j + 2k will be |
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| 3995. |
What are the causes of typhoid? |
| Answer» <p>Causes-Typhoid feverDiagnosisTreatmentComplicationsVaccinationCauses</p><p>Typhoid fever is caused by virulent bacteria called Salmonella typhi. Although they're related, Salmonella typhi and the bacteria responsible for salmonellosis, another serious intestinal infection, aren't the same.</p> <p>Typhoidfeveris anacuteillness associated withfevercaused by theSalmonella enterica serotypeTyphi bacteria. It can also be caused bySalmonella paratyphi, a relatedbacteriumthat usually causes a lesssevereillness.</p> | |
| 3996. |
ct a triangle PQR in which QR6 cm, PQ 4.4. cm and PR 5.3 cm. Draw the bisector of P |
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| 3997. |
tian + bn一司,市n=(b) 0(d) 2.(b) 2nx.(2) rx.(c) 3rx제1 |
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| 3998. |
What are the two components of a solution ? |
| Answer» <p>Asolutionis a homogeneous type of mixture oftwoor more substances. A solutionhastwo parts: a solute and a solvent. The solute is the substance that dissolves, and the solvent is the majority of thesolution</p> | |
| 3999. |
Write a short note on circulatory system and describe its functions. |
| Answer» <p>The circulatory system is made up of theheart,bloodandblood vesselsknown asarteries,capillariesandveins. </p><p>The heart pumps blood throughout your body through the blood vessels. Blood delivers oxygen and nutrients to cells and carries away carbon dioxide and other waste materials.</p><p>Pulmonary circulation: This part of the cycle carries oxygen-depleted blood away from the heart, to the lungs, and back to the heart.</p><p>Systemic circulation: This is the part that carries oxygenated blood away from the heart and to other parts of the body.</p><p>Coronary circulation: This type of circulation provides the heart with oxygenated blood so it can function properly.</p> | |
| 4000. |
4. What does the circulatory system consist of? Give the main function of each. |
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