InterviewSolution
Saved Bookmarks
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.
| 4251. |
Which type of electrostatic force proves the presence of charge? |
| Answer» | |
| 4252. |
AroUnEnvironmental StudiesMake a list of things that mountaineers keep in their rucksack |
| Answer» <p>Clothing</p><p>Wicking base layers (synthetic orwool)</p><p>Fleecejacket or vest.</p><p>Fleecepants.</p><p>Insulating jacket (down or poly fill)</p><p>Insulating hat, cap, balaclava orheadband.</p><p>Sun-shielding hat or cap.</p><p>Socks (synthetic orwool) plus spares.</p><p>Gloves or mittens.</p> | |
| 4253. |
8.29Given the standard electrode potentials,K/K--2.93V. Ag'/Ag 0.80V,Hg "/Hg o.79varrange these metals in their increasing order of reducing power. |
| Answer» | |
| 4254. |
archer stretches her bow while taking aim at the targt. She thenreleases the arrow, which begina to move towards the target Banend on4. Anthis information fill up the gaps in the folloving statement untng thefollowing terms.muscular, contact, non-contact, gravity, friction, shape, attraction(a) To stretch the bow, the archer applies a force that causes a changIn its(b) The force applied by the archer to stretch the bow is an esamgle of(e) The type of force responsible for a change tn the state of motion of the(d) While the arrow moves towards its target, the forces acting on it areforce.arrow is an example of aforce.due toand that due toof air01 |
| Answer» | |
| 4255. |
2.What do mountaineers use for their safety? |
| Answer» <p>For safety in climbing, a mountaineer uses a nylon rope that is 65 m long and 0.9 cm in diameter. When supporting a 96-kg climber, the rope elongates 1.6 m</p> | |
| 4256. |
8. Fill in the blanks:(a)(b)(c)Longer line in the symbol for a cell represents itsThe combination of two or more cells is called aWhen current is switched 'on' in a room heater, itThe safety device based on the heating effect of electric current isterminal.called arr it the statement is true and F" if it is false: |
| Answer» | |
| 4257. |
iace to kWhle measurig the length of a.O crn ard at the other emis Xiem. what8 Wirite the arties and differencen tetween the to ofWhy could you not use an elastic measuring tape to meaeend iscelling fan that has been switched onswoulkd be some of the problems you would meet ins telirnyyou measured with an elastic tape10. Give two examples of periodic motion.SUGGESTED PROJECTS AND ACTIVITIES1. Draw a map of your classroom Roll a ball on the floor. In your mapoints where the ball started and where it stopped Show alsmoved along. Did the ball move along a straight line?Using string and a scale, let each student measure the length ofPrrmare a bar graph of the foot length measurements that have |
| Answer» <p>10. Periodic motion, in physics,motionrepeated in equal intervals of time.Periodic motionis performed, forexample, by a rocking chair, a bouncing ball, a vibrating tuning fork, a swing inmotion, the Earth in its orbit around the Sun, and a water wave.</p> | |
| 4258. |
2. What is the effect of an external magnetic field ona current-carrying conductor? State the factorsgoverning it.(2 marks) |
| Answer» | |
| 4259. |
3.What is the basic difference between electron gain enthalpy & electro negativity? |
| Answer» | |
| 4260. |
carboftnumber from2. Which has more number of(number ofs)atoms. 100 grams of sodium or100 grams of iron (given, atomicmass of Na 23 u. Fe 56 w? |
| Answer» | |
| 4261. |
write the correct electronic configuration for Sodium |
| Answer» | |
| 4262. |
How does rabies spread?Write first aid tips for snake bite.What is a splint? How and why should it be uved |
| Answer» <p>4. Rabies infection is caused by the rabies virus. The virus is spread through the saliva of infected animals. Infected animals can spread the virus by biting another animal or a person. In rare cases, rabies can be spread when infected saliva gets into an open wound or the mucous membranes, such as the mouth or eyes.</p> <p>5. Move the person beyond striking distance of the snake.Have the person lie down with wound below the heart.Keep the person calm and at rest, remaining as still as possible to keep venom from spreading.Cover the wound with loose, sterile bandage.</p> <p>6. A splint is a piece of medical equipment used to keep an injured body part from moving and to protect it from any further damage. Splinting is often used to stabilize a broken bone while the injured person is taken to the hospital for more advanced treatment.</p> | |
| 4263. |
) write the correct electronic configuration for Sodium. |
| Answer» | |
| 4264. |
c) Calculate the viscous force acting on a rain drop of diameter 2 mm. falling with a uniform velthrough the air. The cocfficient of viscosity of air is 1.8 x 10-s Ns/m2 |
| Answer» | |
| 4265. |
2 ( x + \frac { 7 } { 4 } x ) = 550 \Rightarrow 2 \times \frac { 11 } { 4 } x = 550 |
| Answer» | |
| 4266. |
or CH,CH,O is expected to be more stable andWhich of the two: O,NCH,CH,Owhy ? |
| Answer» | |
| 4267. |
four names of chemical fertilizers |
| Answer» <p>Urea</p><p>Urea is the most widely used solid nitrogen fertilizer and is usually applied as granules, although it is sometimes mixed with ammonium nitrate and dissolved in water to form urea ammonium nitrate solution. When applied to soil, urea reacts with water to form ammonia, which makes the nitrogen within the fertilizer available to plants. Urea fertilizers deliver one of the highest amounts of nitrogen at 46 percent, with no phosphorus or potassium.</p><p>Ammonium Nitrate</p><p>A solid fertilizer typically applied in granular form, ammonium nitrate provides substantial amounts of nitrogen to the soil. The Fertilizer Institute indicates that ammonium nitrate is particularly effective at fertilizing specialty crops such as citrus and pasture lands. Ammonium nitrate typically provides 33 percent nitrogen.</p><p>Ammonium Sulfate</p><p>A by-product derived from the waste generated by coke ovens, ammonium sulfate forms when sulfuric acid is used to remove ammonia from the coal used to make coke. Ammonium sulfate is a solid material that contains 21 percent nitrogen.</p><p>Calcium Nitrate</p><p>This fertilizer contains 16 percent nitrogen in a nitrate form. Less effective than other nitrogen fertilizers due to leaching when applied to soil, calcium nitrate is often used in fruit and vegetable crops to provide a readily available source of nitrogen and also provides soluble calcium for soils that are calcium deficient.</p><p>Diammonium Phosphate</p><p>Where soils do not have enough phosphorus, diammonium phosphate can provide significant amounts of this chemical, at around 46 percent. The ammonia component of diammonium phosphate also delivers around 18 percent nitrogen. Highly water soluble, diammonium phosphate is often applied in liquid form.</p> <p>Thanks </p> | |
| 4268. |
StAR |
| Answer» <p>A bus network is a network topology in which nodes are directly connected to a common linear half-duplex link called a bus topology</p> <p>A ring network is a network topology in which each node connects to exactly two other nodes, forming a single continuous pathway for signals through each node - a ring. Data travels from node to node, with each node along the way handling every packet.</p> <p>Astar topologyis atopologyfor a Local AreaNetwork(LAN) in which all nodes are individually connected to a central connection point, like a hub or a switch. Astartakes more cable than e.g. a bus, but the benefit is that if a cable fails, only one node will be brought down.</p> | |
| 4269. |
5.Name the force that keeps the planets to move around the Sun. |
| Answer» <p>Gravitational force keeps the planets to move around the sun</p> | |
| 4270. |
4. Name the instrument with which we see the planets and starsnight sky. |
| Answer» <p>telescope is used to see stars and planets in night sky</p> <p>thanks</p> | |
| 4271. |
wwer the following queWhat are the various advantages of ploughingH i done? |
| Answer» <p>ploughing enhancers the wate retaining </p> <p>ploughing enhancers the water retaining capacity of the soil</p> | |
| 4272. |
name two dwarf planets |
| Answer» <p>Dwarf planets :</p><p>Ceres, Pluto, Eris, Haumea, and Makemake</p> | |
| 4273. |
Write one main difference between asexual and sexual mode of reproduction. Whichspecies is likely to have comparatively better chances of survival - the one teasexually or the one reproducing sexually? Give reason to justify your answer.producing |
| Answer» <p>Asexual reproduction does not involve genetic fusion while sexual reproduction involves fusion of male and female gametes to form a zygote.Species reproducing sexually have better chances of survival. This is because sexual reproduction gives rise to more variations which are essential for evolution as well as survival of species under unfavourable conditions.</p> | |
| 4274. |
Write one main difference between asexual and sexual mode of reproduction. Whichspecies is likely to have comparatively better chances of survival- the one reproducingasexually or the one reproducing sexually? Give reason to justify your answer. |
| Answer» <p>Offsprings By Asexual Mode Of Reproduction Are genetically Identical and Are Refferd to as Clones while offsprings By Sexual Mode Are not Identical To each Other hence Leads to Variation</p> | |
| 4275. |
1)From which substances natural indicators are prepared? |
| Answer» <p>Natural Indicator is a type of indicator that can be found naturally and can determine whether the substance is an acidic substance or a basic substance. Some examples of natural indicators are red cabbage, turmeric, grape juice, turnip skin, curry powder, cherries, beetroots, onion, tomato, etc.</p><p>Some flowers like hydrangeas can determine the acidity or basicity of the soil. These flowers become blue if the soil is acidic, purple if the soil is neutral and pink if the soil is basic. The intensity of the color depends on the amount of acid or base present in the soil. Soil which is highly acidic bears deep blue flowers, whereas soil which is highly basic yields deep pink flowers.</p><p>These natural indicators are used todetect the hydrogen ions (H+) and hydroxyl ions (OH-) in a solution.Olfactory indicators can change their odor. Some examples of olfactory indicators are onion, vanilla extract, clove oil, etc.</p> | |
| 4276. |
(a)Write the differences between type I andtype II superconductors.2 |
| Answer» <p>Soft Superconductors (Type I) :</p><p>1. Soft superconductors are those which can tolerate impurities without affecting the superconducting properties.</p><p>2. They have low critical field.</p><p>3. Show complete Meissner effect.</p><p>4. The current flows through the surface only.</p><p>5. Eg. Tin, Aluminium.</p><p>Hard Superconductors (Type II) :</p><p>1. Hard superconductors are those which cannot tolerate impurities, i.e., the impurity affects the superconducting property.</p><p>2. They have high critical field.</p><p>3. Hard super conductors trap magnetic flux and hence Meissner effect is not complete.</p><p>4. It is found that current flows throughout the material.</p><p>5. Eg. Tantalum, Neobium.</p> | |
| 4277. |
Explain why does milk turn sour in summer season. |
| Answer» <p>Milk turn sour in summer Because bacteria grows faster in summer than in winter due to the favorable conditions and as the number of bacteria increases it makes the curd sour. Lactobacillus bacteria (micro organism) turns milk into yogurt (curd). Since lactic acid tastes sour, the curd tastes sour.</p> | |
| 4278. |
3.0 g of carbon is burnt in 8.00 g oxygen, 11.00n dioxide is produced. What mass of carbon dioxide4S |
| Answer» <p>C + O2→ CO2</p><p>3 g 8 g 11 g</p><p>Total mass of reactants = mass of C + mass of O = 3+8=11g</p><p>Total mass of reactants = total mass of products</p><p>Hence, the law of conservation of mass is proved.</p><p>Further, it also shows carbon dioxide contains carbon and oxygen in a fixed ratio by mass, which is 3 : 8. Thus it also proves the law of constant proportions. 3 g of carbon must also combine with 8 g of oxygen only. This mean that (50 – 8) = 42 g of oxygen will remain unreacted</p> | |
| 4279. |
us tu speak.BitteSourSaltySwe |
| Answer» <p>This looks like the anatomy of the tongue. What is your question here?</p> | |
| 4280. |
nd their uses.Write briefly about the three methodsof electrolysis of sodium chloride. |
| Answer» <p>Three method of electrolysis of sodium chloride</p><p>1) by passing electric current</p><p>NaCl---------> NaOH+H2+Cl2electrolysis</p><p>there is only one method of electrolysis</p><p>but there multiple reactions of Decomposition of sodium chloride</p><p>4.5</p> | |
| 4281. |
v. Answer CC TUWuwing1. Water is tasteless, but we experience different tastes of water indifferent places. Why? |
| Answer» <p>Because different places have different atmospheric pressure and conditions</p> <p>It's mainly because of the type of source.Different river water tastes different due to the difference in the soil of that place.Also, a purified water(chemically) will taste different due to the use of chemicals.The real pure water is tasteless becozit contains no minerals, carbohydrates etc. </p> <p>because different places have different atmospheric pressure and conditions .</p> <p>Because difference places have different atmospheric pressure and conditions </p> <p>its is because of some sources.......</p> <p>its becoz of different source and different atmospheric pressure at different place</p> | |
| 4282. |
V2L5. An open pan P filled with water (density puof density p is placed on one side of the pan as shown in the figure. Water depth is more tthe blockis placed on a vertical rod, maintaining equilibrium. A blockhan height of(A) Equilibrium will be maintained only if ppw(B) Equilibrium will be maintained only if p s pw(C) Equilibrium will be maintained for all relations between p and pw(D) It is not possible to maintained the equilibrium |
| Answer» <p>Option B is correct because it will balance the load hence possible to get equilibrium as the volume of the added block gets added up into the water on the lhs side which balances the weight of block. Hence sets up the equilibrium .</p> <p>wrong</p> | |
| 4283. |
I. How are the sense organs connected to the brain? |
| Answer» <p>Our sense organs play a very important role in our everyday lives as they allow us to do things . Our senses are seeing ,feeling ,tasting ,touching,and hearing .</p> | |
| 4284. |
Write the difference between Homologous and Analogous organs. |
| Answer» <p>Homologous Organs:1. They differ morphologically.2. They have similar internal structure.3. They develop in related organisms.4. Stages in the development are similar.5. They perform different functions.6. They have similar developmental pattern.7. Homologous organs show adaptive radiation (divergent evolution).Analogous Organs:1. They show superficial resemblance.2. Their internal structure is quite different.3. They develop in unrelated organisms.4. Stages in the development are different.5. They have similar functions.6. They have dissimilar developmental pattern.7. Analogous organs show convergent evolution.</p> | |
| 4285. |
2.Descnibe the different methods of asexual reproduction. Give examples |
| Answer» | |
| 4286. |
Study of pollen grain is called .................. |
| Answer» <p>Thestudy of polleniscalledpalynology </p> | |
| 4287. |
What Is pollengrain ? |
| Answer» <p>Pollenis the male gametophyte of seedplants. Both gymnosperms (cone-bearingplants) and angiosperms (floweringplants) producepollenas part of sexual reproduction. ... Eachpollengrain typically consists of one to a few cells.</p> | |
| 4288. |
Movement of air due to difference in pressureand temperature3. The unit in which wind speed is expressed4. Storms that are accompanied by thunderlightning and heavy rainsA continuous funnel-shaped wind betweensky and ground5. |
| Answer» <p>1.movement of air due to difference in pressure and temperature is convection or advection.2.unit in which wind speed is expressed is mph(miles per hour).3.thunderstorms.4.cyclones.</p> | |
| 4289. |
Weather does not include which factor? |
| Answer» <p>amount of sunlight is not included in weather.</p> | |
| 4290. |
Give the meaning of the term 'earthing. |
| Answer» <p>to connect a electrical appliance to ground .</p> <p>The process of transferring the immediate discharge of the electrical energy directly to the earth by the help of the low resistance wire is known as the electrical earthing. Mostly, the galvanised iron is used for the earthing.</p> | |
| 4291. |
2012A3a A thin uniform wire is bent to form the two equal sides AB and AC of triangle ABC, whereAB = AC = 5 cm. The third side BC, of length 6cm, is made from uniform wire of twice the linear massdensity of the first. The distance of centre of mass from A is(C) cm3434(A) cm(B) 4 cm(D) cm45uniform rectangular plate as shown in figure. The |
| Answer» <p>weight is concentraed at centre of each rod</p><p>let mass of AB=AC=d.5.A ,its C.O.M are (4.5 , 2) and (1.5 , 2)</p><p>let mass of BC=2d.6.A ,its C.O.M are (3 , 0)</p><p>COMx = (5*4.5 +5*1.5+3*12)/(5+5+12) = 3</p><p>COMy = (5*2 +5*2+0*12)/(5+5+12) = 0.91</p><p>distance P(3 , 0.91) and A(3 , 4) is3.09m</p><p>ie 34/11cm</p> | |
| 4292. |
7. The resultant of two equal forces is 141.AN when they are mutually perpendicular. Whthey are inclined at an angle 120", then the resultant force will be) 100 N2) 141.4 N3) 196 N4) Zero20. |
| Answer» <p>When angle is 90° F_net = F√2141.4 = F√2F = 141.4/√2F = 100 N</p><p>Each force is 100 N</p><p>When angle is 120° F_net = F</p><p>Resultant force will be 100N</p> | |
| 4293. |
3)P=4Q7. The resultant of two equal forces is 141.4N when they are mutually pertually perpendicular,they are inclined at an angle 120°, then the resultant force will be1100 N4) Zero2) 141.4 N3) 196 N |
| Answer» <p>When angle is 90° F_net = F√2141.4 = F√2F = 141.4/√2F = 100 N</p><p>Each force is 100 N</p><p>When angle is 120° F_net = F</p><p>Resultant force will be 100N</p> | |
| 4294. |
Q.5Two vector A and B are acting in the same planeand the vector Č is perpendicular to the plane. Theresultant of these vectors -[1] may be zero[2] can not be zeroHanuman Nagar. |
| Answer» <p> the resultant of these vectors can only be 0. if all the vectors have magnitude of 0. otherwise rhe resultant cannot be 0. </p> | |
| 4295. |
aximum speed of a particle in simple harmonicmotion is vmaxe then average speed of this particle inone time period is equal toa) max.(c) _max10. MVmax2Vmax |
| Answer» <p>hence 2Vmax/π</p> | |
| 4296. |
Derive an expression for a one dimensionalsimple harmonic progressive wave travelling inthe direction of the positive X-axis. Express it indifferent forms. |
| Answer» | |
| 4297. |
4. Does sound travel in liquid? |
| Answer» <p>yes sound travel in liquid</p> | |
| 4298. |
6. Explain the difference between self-pollination and cross-pollination. |
| Answer» | |
| 4299. |
fig-8: Cutting |
| Answer» <p>there are some plants who grow from their stem.We just need to cut their stem and dig in soil and give it required amount of water and other nutrients so that it can grow.one ex. of such plants is cactus</p> | |
| 4300. |
1. The absolute refractive index of water is1.36. What is the velocity of light in water?(velocity of light in vacuum 3 x 10^8 m/s) |
| Answer» | |