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.
| 201. |
The position-time Ex-ง graphs for two children A and B teturung from their schoolO to their homes P and Q respectively are shown in Pig 3.19 Choose the correctentries in the brackets belowia) (A/B) lives closer to the school than (B/A)(l (A B) starts from the school earlier than (B/A)(c) (A/B) walks faster than (B/A)(d) A and B reach home at the (same/diflierent) timeel (A/Bl) overtakes (B/A) on the road (once/twice) |
| Answer» | |
| 202. |
,What will happen if there are no platelets in blood |
| Answer» <p>If there are no platelets in the blood, then thebloodwould not be able to clot. A clot is formed because ofplatelets.Theyreleaseblood clotting chemicals at the site of injury. These chemicals form a clot and prevent further bleeding.</p> <p>if there is no platelets in blood....the blood will continue to loss. we can't able to control the flow of blood and some disease like dengue can easily affect </p> | |
| 203. |
5.What will happen if there are no platelets in the blood? |
| Answer» | |
| 204. |
5. What will happen if there are no platelets in the blood? |
| Answer» | |
| 205. |
a) red blood els0 plateles |
| Answer» <p>Red blood cells carry oxygen.</p> <p>thanks </p> | |
| 206. |
Question No. 1 to 35 have four options, out ofselected option, on the OMR - Sheet.Gynoecium is made up of-(A) Stigma |
| Answer» <p>Thegynoecium(whethercomposedof a single carpel or multiple "fused" carpels) is typicallymade upof an ovary.</p> | |
| 207. |
Give one function each of RBC, WBC and platelets. |
| Answer» <p>The cellular portion of blood containsred blood cells(RBCs),white blood cells(WBCs) and platelets. TheRBCscarry oxygen from the lungs. TheWBCshelp to fight infection, andplateletsare parts of cells that the body uses for clotting.</p> | |
| 208. |
What is meaning of enzymes |
| Answer» <p> Enzymes are proteins that serve as catalysts and reduce the need for specific chemical reactions within a cell. Enzymes are often part of metabolic pathways. Coenzymes or cofactors are sometimes needed for an enzyme to function. Enzymes are controlled by competitive or non-competitive feedback inhibition.</p> | |
| 209. |
Why are enzymes called bio-catalysts? |
| Answer» <p>Enzymes are organic molecules synthesized by our cells to speed up reactions in our bodies. Catalase, for example, is a protein synthesized by our cells to break down hydrogen peroxide. Hydrogen peroxide is a toxic oxidizing agent. Its natural decomposition is too slow. So out body uses enzymes as a ‘catalyst’ to speed up the decomposition of hydrogen peroxide. Enzymes are called ‘biology’ because there are a lot of inorganic catalysts, like iron, which also catalyse reactions. However, iron is not synthesized by our cells, thus it is not biological.</p> | |
| 210. |
cotton is obtained from which part of the plant |
| Answer» <p>cotton is obtained from fruits or seed pods of the cotton plant</p> | |
| 211. |
Name the describe three types of force |
| Answer» | |
| 212. |
Describe in brief the three types oftranspiration. |
| Answer» <p>There are three types of transpiration, the process in which water is lost from plants in the form of gas or vapor: stomatal, cuticular, and lenticular. These are briefly described below.</p><p>1.Stomatal transpiration- This is the most dominant form of transpiration being responsible for most of the water loss in plants. It accounts for 90-95% of the water transpired from leaves. As the name suggests, the process involves the participation of thestomata(sing. stoma) or stomates, microscopic pores in the epidermis of the leaves.Liquid water is first absorbed by the plant through its roots from the soil. It is then translocated via the xylem tissue in a continuous stream towards the mesophyll cells of the leaves. Either at the surfaces of the mesophyll cells or of the epidermal cells close to stomata, liquid water is converted to water vapor. It then escapes through the stomatal pore at the time when it is open to allow entry of CO2 and release of O2.</p><p>2.Cuticular Transpiration– This type of transpiration is responsible for the loss of water in plants via the cuticle. Water vapor directly diffuses through the cuticle on leaves and herbaceous stems and escapes to the atmosphere.Thecuticleis a waxy or resinous layer of cutin, a fatty substance, covering the outside (epidermis) of leaves and other plant parts. Except for the interruption by stomates and lenticels, the layer is continuous. The thickness of cuticle varies with species, butxerophytic plantsgenerally have thicker cuticles.This layer repels water but has some permeability to water vapor.This type of transpiration accounts for only about 5-10% of the total water loss from leaves (Hopkins 1999). However, cuticular transpiration rate can be high and stomatal transpiration insignificant under extremely dry conditions due to stomatal closure. Likewise, in plants having leaves with thin cutin cover, loss of water can be significantly high under conditions that favor high rate of transpiration.</p><p>3.Lenticular Transpiration– This type of transpiration is the loss of water from plants as vapor through the lenticels. Thelenticelsare tiny openings that protrude from the barks in woody stems and twigs as well as in other plant organs.Like cuticular transpiration, escape of water vapor via the lenticels is too low compared to stomatal transpiration. Similarly, lenticular transpiration tends to become significant in plants subjected to very dry conditions. Under these conditions, the stomata tend to close thus severely limiting stomatal transpiration.But with deciduous trees, lenticular transpiration may become important during winter in temperate countries. These trees naturally defoliate at the start of the winter season. There being no leaves, the magnitude of water loss via lenticels may exceed the rate of water uptake which naturally slows down because low temperature causes water to become more viscuous. This type of transpiration can therefore led to dessication of trees.</p> | |
| 213. |
Find the total energy and binding energy of aartificial satellite of mass 800 kg orbiting at aheight of 1800 km above the surface of the earth.(G = 6.67 × 10-11 s.L units, radius of the earth,R = 6400 km, mass of the earth, M = 6 × 1024 kg) |
| Answer» | |
| 214. |
stions1. Youu find your mass to be 42 kgYoLi fion a weighing machine. Is yourmass more or less than 42 kg? |
| Answer» <p>thanks a lot friend</p> | |
| 215. |
chalk and marble are both sedimentary rocks . Marble is used to make buildings but chalk is not . Why |
| Answer» <p>marble is a metamorphosed[changed by earth,s crust,s heat and pressure] limestone.</p> | |
| 216. |
the wial Bressurerthe toar pressureQ2.At what temperature does the rms speed of O2 molecules equal 400 m/s? |
| Answer» | |
| 217. |
1+1+1+1+1+1+ |
| Answer» | |
| 218. |
c) 24:1a) 3600:1b) 60:12. A car is moving along a horizontal curve of radius 20 m and the coefficient obetween the road and wheels of the car is 0.25. It's maximum safe sped isa) 3 m/sc) 7 m/sd) 9 m/sb) 5 m/se gravitational potential due to Earth is minimum ata) The centre3. Thec) Distance equal to 100 times the radius of the earthd) Infinite distanceb) The surface |
| Answer» <p>3)On Earth, Gravity is minimum on equator and maximum on poles.</p><p>Equator-it is the largest circle on earth which divides earth in two equal halves (southern hemisphere and northern hemisphere) . It makes zero degree angle with centre of earth. In other words, earth is divided in latitudes ranging from 0 degree to 90 degree (north or south depending on which hemisphere you move) subject to the angle they make with centre of earth.</p><p>P. S. Fun fact gravity is maximum on surface of earth, ot decreases if you move away from earth or go inside earth, because gravity depends on mass of the object.</p><p>P. P. S every object in the universes exerts gravitational attraction force on every other object</p> | |
| 219. |
Write the name of any three big water bodies : |
| Answer» <p>water bodiesOceansRiverBay</p> | |
| 220. |
\begin{array}{|c|c|c|c|}\hline 1 & {2} & {1} & {{ } \\ \hline 1 & {9} & {4} & {0} & {0} \\ \hline & {{ } & {3} & {6} & {0} \\ \hline & {5} & {4} & {0} \\ \hline & {8} & {0} & {0} \\ \hline & {{ } & {4} & {5} \\ \hline\end{array} |
| Answer» | |
| 221. |
(Biology)Answer in one word/one sentence:13. Name the enzyme that saliva contains.I. |
| Answer» <p>Enzyme that saliva contains is salivary Amylase</p> | |
| 222. |
3. Saliva contains an enzyme called |
| Answer» <p>Saliva contains the enzyme amylase, also called ptyalin, which is capable of breaking down starch into simpler sugars such as maltose and dextrin that can be further broken down in the small intestine. About 30% starch digestion takes place in the mouth cavity.</p> | |
| 223. |
How can dirty water harm our body? |
| Answer» | |
| 224. |
A SOluuont COIf 25 mL of acetone is present in 150 mL of its aqueous solution, calculate the concentráWhat happens when the temperature of a saturated sugar solution is increased?thinc less solute at a given temperature and pressure? |
| Answer» | |
| 225. |
(d) nueleus.5. How are fats digested in our bodies? W |
| Answer» <p>Fats are present in the form of large globules in the small intestine. The small intestine receives the secretions from the liver and the pancreas. The bile salts (from the liver) break down the large fat globules into smaller globules so that the pancreatic enzyme lipase can easily act on them. This is referred to as emulsification of fats. This process takes place in the small intestine.</p> | |
| 226. |
What is a first aid? |
| Answer» <p>First aid is the assistance given to any person suffering a sudden illness or injury, with care provided to preserve life, prevent the condition from worsening, or to promote recovery.</p> | |
| 227. |
1, What is a first aid? |
| Answer» <p>First aid is the provision of immediate care to a victim with an injury or illness, usually effected by a lay person, and performed within a limited skill range.</p> | |
| 228. |
how does the embryo get nourishment inside the mothers body |
| Answer» <p>The embroyo gets its nourishment from the mother's blood which is directly transmitted to the embroyo through a special tissue called the placenta. And through this placenta the blood goes to the embroyo and waste products from the embroyo comes to the mother's body. </p> | |
| 229. |
what is a CPU? |
| Answer» <p>CPU is an electronic machine it is known as brain of computer</p> <p>A central processing unit is the electronic circuitry within a computer that carries out the instructions of a computer program by performing the basic arithmetic, logic, controlling, and input/output operations specified by the instructions</p> | |
| 230. |
1. A person goes to bed at sharp 10-00 pm every day. Is itan example of periodic motion ? If yes, what is the timeperiod? If no, why? |
| Answer» | |
| 231. |
An athlete completes one round of a circular trac200 m in 40 s. What will be thedisplacement at the end of 2 minutes 20 s?distance covered and the |
| Answer» <p>Speed =distancetimedistancetime</p><p>Distance = circumference of the track.</p><p>Distance =200∙π200•π</p><p>Speed =200∙π40200•π40</p><p>Speed =5π5π</p><p>time = 2 min 20s = 140s</p><p>distance = 140*5*π</p><p>distance = 700π</p><p>∴distance=700π</p> | |
| 232. |
(b) total current flowing in the circuit24. Inthe circuit diagram given below, three resistors R1, R2 and R3 of 5 Ω, 10 Ω and 30 Ω, respectively areconnected as shown.R2 10ΩR3 30 Ω12VCalculate(a) current through each resistor.(b) total current in the circuit.(c) total resistance in the circuit.eo sistors of 6 O and 2 Ω connected in series. Calculate: |
| Answer» | |
| 233. |
In order to meet the ever-increasing demand in factories and for shelter,trees are being continually cut. Is it justified to cut trees for such projects?Discuss and prepare a brief report.6. |
| Answer» | |
| 234. |
6.In order to meet the ever-increasing demand in factories and for shelter.trees are being continually cut. Is it justified to cut trees for such projects?Discuss and prepare a brief report. |
| Answer» | |
| 235. |
Calculate the angle ola (b) 1 minute of arc or arcmin)nd (c) 1° (second of arc or arc second) inUse 360°=2π rad. 1°-60, and t= 60 |
| Answer» <p>We know 3600= 2π rad</p><p>=>1°= (π/180) rad = 0.01745 rad</p><p>1/= (1/60)°= π/(60 × 180) = 0.00029 rad</p><p>1//= (1/3600)°= π/(3600 × 180) = 0.0000048 rad</p> | |
| 236. |
ltiple CHoIceA group of cells is called |
| Answer» <p>A groupof similarcellsorganized to perform a particular function is a "tissue."</p> | |
| 237. |
32. Practice of reuse of materials will contribute to maintain.Sustainity of the environment. Support this statement with reasons. |
| Answer» <p>The three R's –reduce,reuse and recycle– allhelpto cut down on the amount of waste we throw away. They conserve natural resources, landfill space and energy. Plus, the three R'ssaveland and money communities must use to dispose of waste in landfills.</p><p>As well, waste disposal is linked to greenhouse gas emissions, which is hazardous to our health. It is moreimportantthan ever toreducethe amount of natural resources being used in manufacturing processes, as well as increasingrecyclingrates andreusing materials.</p> | |
| 238. |
Which one is the application of temporary electro magnet select from the following?a) Micro phonesc) Cut outs18.b) Moving coil instrumentsd) Ear phones |
| Answer» <p>Moving coil instruments is one of the application of temporary electromagnets.</p> | |
| 239. |
Q.11) Soil formation is done by both biotic & abiotic factors. Explain the same & also list thenames of these factors by classifying them as abiotic & biotic. |
| Answer» | |
| 240. |
s as rupees using decimalsise (b) 75 paise () 20 paised) 50 rupees 90 paise(e) 725 paiseecs as metres using decimal |
| Answer» | |
| 241. |
rite the differences between breathing and cellularrespiration.What happens to the ribs and the dianbra |
| Answer» <p>Breathing is the physical process where you inhale and exhale air in and out of your lungs. Inhaling brings in air containing Oxygen, which is absorbed and exchanged for Carbon Dioxide. The Carbon Dioxide, now in the air inside your lungs, is expelled when you exhale. The Oxygen is carried in your blood to the cells around your body where respiration takes place. Respiration is a chemical reaction where Oxygen is used to breakdown Glucose in order to generate energy which is then used by the cell to function.</p> | |
| 242. |
Name of the plant that does not have leaves. |
| Answer» <p>Ans :- Mosses</p><p>Non-vascular plants do not have a wide variety of specialized tissue types.Mossesand leafyliverwortshave structures that look like leaves, but are not true leaves because they are single sheets of cells with no stomata, no internal air spaces and have no xylem or phloem.</p> <p>in bengali...swarnolota...i don't know this english</p> | |
| 243. |
Write the relevant observation and conclusionObservationConclusion |
| Answer» <p>this question is chapter based.you need to read it and answer accordingly.</p> <p>I dont know</p> <p>do you know how to do</p> | |
| 244. |
Jahn-Teller Effect; Jahn-Teller Theorem,Jahn-Teller Distortion.17 |
| Answer» | |
| 245. |
Two blocks of masses 5 kg and 3 kg are placed in contact ona horizontal frictionless surface as shown in the figure. Aforce of 4N is applied on mass 5 kg. The acceleration of themass 3 kg, will beANIT4(a) m/s? (b) m/s2(c) 2 m/s2 (d) 0.5 m/s25 kg 3 kgIIIIIIIIIIIIIIIIII77777 |
| Answer» <p>I think ans 'd' is correctbecauseF=ma4N=(5+3)kg×aso, a==F÷m =4÷8 =1/2 =0.5m/s^2acceleration in both masses will be sameSo acceleration of mass 3 kg will be 0.5m/s^2</p> | |
| 246. |
C-2.A stone of mass 5 kg is thrown upwards with a speed of 36 misec With what speed earth recoil Massof the earths 61024 kg (assuming that there is no external force on the system) |
| Answer» <p>M= mass of stone = 5 Kgv= velocity of stone = 36 m/sM= mass of Earth = 6*10²⁴ KgV= velocity of EarthApplying Law of Conservation of Momentum , mv + MV = 0V= -mv/M = -(5*36)/6*10²⁴ = -3 × 10^-23Here , - sign indicates that direction of velocity of Earth is opposite to that of stone</p> | |
| 247. |
ii) Write any two differences betwen Central Nervous system andPeripheral Nervous system.OD |
| Answer» <p>Everything else but the CNS it is known as the peripheral nervous system. The peripheral nervous system or PNS contains the nerves, which leave the brain and the spinal cord and travel to certain areas of the body. The peripheral nervous system's main job is to send information gathered by the body's sensory receptors to the CNS as quickly as possible. Once the CNS has understood the information, the PNS will relay the specific orders back out the body. These nerves which carry information in a way of nerve impulses to and from the brain are called cranial nerves. The nerves that carry impulse to and are carrying information from the spine are called spinal nerves. The PNS has two important parts. They are the motor division and the sensory division. The sensory division collects the impulses from the sensory receptors in areas like skin, muscles, and organs, and also carries those impulses through the nerves to the CNS. The motor division collects the outgoing messages from the CNS and delivers them to the appropriate body organs, telling them what to do. The motor division does the opposite from the sensory division.</p> | |
| 248. |
State in brief how the communicationbetween the central nervous system andthe other parts of the body is facilitated? |
| Answer» <p>The central nervous system (CNS) is composed of the brain and spinal cord. the central nervous system communicates with the rest of the body by sending message from the brain through the nerves that branch off of your spine. you are able to move your body,get out of bed, drive to work,play tennis and so on. when your mind's intention to move is translated by the brain into neurochemicals and electrical impulses. the chemical and electrical impulses, through contraction of your skeletal muscles, results in the movement of your body.</p><p>in addition to simple muscular activity, your CNS plays a complex role in the orchestration of the mind-body-spirit connection by way of its connection with the chemical messenger system (CMS) and the autonomic nervous system (ANS). this complex interaction is called the brain neuromatrix.</p> | |
| 249. |
total weight?. Shyam deposited 2560 rupees in his bank and got Rs 46.80 as interestaccount. He again deposited 360 rupees 40 paisa. How much money dehave in his hank account now? |
| Answer» <p>Total = 2560 + 46.80 + 360.40</p><p>= 2,967.20</p> <p>sahil deposited 3,75,000 in his saving bank account . later he withdrew 49265 . how much money was left in his account</p> | |
| 250. |
7 list four Praduct which we get from forest |
| Answer» <p>Aforest productis any material derived fromforestryfor direct consumption or commercial use, such aslumber,paper, orforageforlivestock.Wood, by far the dominantproductofforests, is used for many purposes, such aswood fuel(e.g. in form offirewoodorcharcoal) or the finished structural materials used for theconstructionofbuildings, or as a raw material, in the form ofwood pulp, that is used in the production ofpaper. All other non-wood products derived from forest resources, comprising a broad variety of other forest products, are collectively described asnon-timber forest products.</p> | |