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InterviewSolution
This section includes InterviewSolutions, each offering curated multiple-choice questions to sharpen your knowledge and support exam preparation. Choose a topic below to get started.
| 6201. |
A sound wave has a frenquency 2hz and wave length 40 cm. How long will it take to travel 1.6 km |
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Answer» V=f× wavelengthV = 2×0.4=0.8m/secSpeed=distance÷time0.8 = 1600÷timeTime = 1600÷0.8 =20sec Frequency=2hzWavelength=40cm=0.40mWe know that speed = wavelength× frequency=0.40×2hz=0.8m/sThe time taken by the wave to travel a distance ,d= 1.6km ist=d/v= 1.6× 1000 m/0.8m=2s |
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| 6202. |
If valemcy is 3 what is its chemical formula |
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| 6203. |
Differentiate the stature of niclce |
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| 6204. |
3 human activity which are responsible for depletion of Ozone layer |
| Answer» Production of CFC, introduction of more automobiles, burning of fuels..... are the three human activity which are responsible for depletion of Ozone layer. | |
| 6205. |
Difference between solid ,liquid and gas |
| Answer» \tSolidsLiquidsGasesHighly Strong intermolecular forces between the molecules, leads to a definite volume in Solids.The intermolecular forces are stronger than gases but weaker than solids.The intermolecular forces are practically non existent. Thus, there is no definite volume.Solids have a definite shape to them.Liquids do not have a definite shape.Gases do not have a definite shape.The intermolecular space between solids is absent.The intermolecular space is moderate but present.The intermolecular space is free flowing and plenty.The force of attraction between the molecules is incredibly high.The force of attraction between molecules is pretty moderate.There is no intermolecular force of attraction between the molecules.They are incompressible.Liquids cannot be compressed.Gases can be compressed quite easily.\t | |
| 6206. |
Difference between suspension and colloids |
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Answer» \t Suspension ColloidIt is a form of homogeneous solutionIt is a form of heterogeneous solutionParticle size greater than 1000 nmParticle size range from 1-1000 nmParticles settle down wellParticles do not separateCan be separated by filtrationCannot be separated by filtrationMay scatter lightShows Tyndall effect (scatters light)OpaqueTranslucentEasily visible through naked eyeNot visible through naked eye\t In suspension the size of particles are larger than colloids and can be seen with naked eyes and particles do not pass through filter paper.But in colloid particles are smaller and passes through filter paper and cannot be seen even with microscope. |
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| 6207. |
How many molecules of water of hydration are present in 630mg of oxalic acid? |
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Answer» 6.022*10*21 Number of molecules available in oxalic acid is equal to 630 divided by 126 which come to 5.\xa0Number of molecules of water present is equal to 5 x 6.02 x 1023Therefore, number of molecules of water of hydration present in 630 mg oxalic acid is 30.1 x 10 23.\xa0 |
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| 6208. |
What is tindal effect?? |
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Answer» The scattering of a beam of light is called the thyndall effect. This scattering of a beam of light by the particles of a colloid is called the Tyndall effect. When we apply torch light on a galss of milk then the path of the light becomes visible but it is not so in case of water because in milk light is scattered by its very fine particles.Tyndall effect can be observed when sunlight passes through the canopy of a dense forest. In the forest, mist contains tiny droplets of water, which act as particles of colloid dispersed in air. |
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| 6209. |
What is formula of sodiun oxylate and ferrous acetate |
| Answer» Sodium oxalate, or disodium oxalate, is the sodium salt of oxalic acid with the formula Na2C2O4. It is a white, crystalline, odorless solid, that decomposes above 290 °C.Ferric acetate is the coordination compound more commonly known as "basic iron acetate". With the formula [Fe3O(OAc)6(H2O)3]OAc it is a salt, | |
| 6210. |
Difference between suspension and colloidal sotution |
| Answer» Suspensions -\xa0Suspension is a heterogeneous mixture in which particle size of one or more components is greater than 1000nm. When mud is dissolved in water and stirred vigorously, particles\xa0of mud are distributed evenly in water. After some time, the particles of this solution settle under water due to influence of gravity. This solution is an example of Suspension (see picture below). Contrary to True Solution, particles of suspension are big enough to be seen with naked eye.Colloidal Solution -\xa0Colloidal Solution is a heterogeneous mixture in which particle size of substance is intermediate of true solution and suspension i.e. between 1-1000 nm. Smoke from a fire is example of colloidal system in which tiny particles of solid float in air. Just like true solutions, Colloidal particles are small enough and cannot be seen through naked eye. They easily pass through filter paper. But colloidal particles are big enough to be blocked by parchment paper or animal membrane.\xa0 | |
| 6211. |
What is cell sap |
| Answer» Cell sap is the fluid present inside the large vacuoles of the cell. It comprises of sugars, salts amino acids and mainly water. It provides buoyancy and support to the cell. It also helps in storage of many materials Cell sap maintains osmosis of the cell. It also helps in colouration due dissolved pigments in it. | |
| 6212. |
Please send me sample papar in 2018/2019 |
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Answer» Science Which subject ?? |
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| 6213. |
Sample papers of class 9 2018-2019 |
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Answer» No I think oswal is good and book will be best Visit www.oswaalbook.com Theres no use of it |
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| 6214. |
Speed of sound |
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Answer» Speed of sound is 344 m/sec at room temperature of 20 degree c Speed of sound in air =344meter per second Speed of sound is 344m/s 343m/s 340m/s |
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| 6215. |
What is a structure of an atom |
| Answer» It consist of positive and negative charge particles | |
| 6216. |
Explain buoyancy |
| Answer» Force upwards, towards the gravity in water is called buoyant force &this phenomenon is called buoyancy. | |
| 6217. |
Difference between thrust and upthrust |
| Answer» Thrust is the force apply perpendicularly on an object whereas the upward force exerted by the liquid on a solid object is known as upthrust. | |
| 6218. |
Propertie of the colloids |
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Answer» It appears to be homogenous but actually it is heterogenous Stable and translucent Particle size is between 1 to 1000 nano metersCan\'t be separated by simple filtrationThey scatter light |
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| 6219. |
Chronic disease |
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Answer» Chronic disease:this disease which last or long period time even much as life time is known as chronic disease A type of disease which lasts for a year or a lifetime It causes drastic effects on the body Eg heart failure diabetes |
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| 6220. |
difference between indigenous and exotic breed |
| Answer» Brainly.inWhat is your question?1Secondary SchoolScience 13 pointsEXOTIC- foreign breed poultry animals is called exotic animals 1)they are not disease resistance. Indigenous- local or desi breed is called indigenous animals. 1) they are disease resistant.uses of exotic animal in poultry is there yield is high i.e., they provide more of eggs. And in cattle it provide more of milk. | |
| 6221. |
What is a meaning of ban chod |
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Answer» Sry Hey you stupid fellow , please focus on study .. Do not asked any this type of Question ????? Do u even know what r u asking?????don\'t use that language here... |
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| 6222. |
Gravity at r is 9.8m/s square . If planet is made up same material but 2×r . What is the value of g. |
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Answer» Sorry...... gravity will be 1/4 times the previous one.... Gravity will be 4 times the previous one... |
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| 6223. |
What are the major divisions in plantae |
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Answer» Cryptogamae and Phanerogamae. 1. Cryptogamae- Thallophyta, Bryophyta, Pteridophyta2. Phanerogamae-Gymnosperm, Angiosperm 1. Thallophyta2. Bryophyta3. Pteridophyta4. Gymnosperms5. Angiosperms |
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| 6224. |
What is the body cavity? |
| Answer» Body cavity is represented by coelom.Coelom is the body cavity filled with fluid that runs the complete length of vertebrates to divide the body of an organism into inner tube and outer tube.*Coelom at embryonic stage, divides the mesoderm into two layers.*Coelom helps in absorption of shocks.*Coelom also helps the organisms to grow independently away from the body wall.*Coelom in mammals is divided into peritoneal, pleural and pericardial cavities | |
| 6225. |
What is factor afeectin evaporation |
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Answer» Factor affecting in evaporation1.temperature2.wind speed3.humidity4.surface area Wind speed also affect the process of evaporation Humidity also Surface area, wind,temperature affects evaporation |
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| 6226. |
We feel cool after doing vegorous exercise why |
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Answer» We feel cool after doing vegorous exercise because when our body is fill with sweat ,the sweat will evaporate from the atmosphere and ansorbs latent heat of fusion ,and we know that evaporation causes cooling effect. Bcoz when our sweat evaporates it absorbs latent heat of fusion from our body and this gives the cooling sensation |
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| 6227. |
Differenciate between acute and chronic disease |
| Answer» Acute disease -these disease take short period of time and are severe. It don\'t cause long term bad effect on the health. Chronic disease -these disease last for a long time even as much as life time. It cause long term bad effects on the health. | |
| 6228. |
What type of cloth should we wear in hot summer days?why? |
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Answer» In summer we perspire more; cotton being a good absorber of water helps in absorbing the sweat and exposes it to the atmosphere for evaporation. When sweat evaporates from our body it takes heat from our body. Thus, our body loses heat and gets cooled. In summer days we wear cotton cloths because it absorb swat |
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| 6229. |
Which tissue, when matured has dead cells? |
| Answer» I think it\'s answer is sclerenchyma tissue | |
| 6230. |
परमाणु कया है |
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Answer» Parmanu means atoms परमाणू का मतलब है at"atomic" |
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| 6231. |
Name a device which convert electrical energy to mechanical energy |
| Answer» A motor converts electrical energy to mechanical energy | |
| 6232. |
Isotopes have same chemical properties. Why? |
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Answer» No you are wrong. Since isotopes have the same atomic number their electronic configurations are the same . So they have the same valency.Therefore isotopes have same chemical properties. Chemical properties depend on the electronic configuration of an atom. Since, isotopes of an element have same atomic number or number of electrons or more precisely same electronic configuration hence, isotopes of an element show similar chemical properties. No , isotopes are not same chemical properties |
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| 6233. |
What is relative density and what is its S.I unit |
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Answer» It is also called specific gravitt Relative density is the ratio of density of a substance to the density of water. It has no unit. |
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| 6234. |
Write practical of magniseum ribbon in air |
| Answer» 1. Write the aim of the experiment. 2. Materials required. 3. Procedure. 4. Observations of the experiment.5. Conclusion. 6. Precautions .You can write the practical with the help of these steps.... | |
| 6235. |
What is lignin? |
| Answer» Lignin is a complex organic polymer deposited in the cell walls of many plants, making them rigid and woody | |
| 6236. |
If an element X has valency 3 .what is the formula of its oxide |
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Answer» Compound\xa0\'X\' has valency 3 and \'O\' has valency 2 . L.C.M of 3 & 2 is 6 .For X = 3 *\xa02\xa0= 6For O = 2 *\xa03\xa0= 6Therefore\xa0\xa0is the formula of oxide of \'X\' X2 O3 |
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| 6237. |
Water is pure or mixture |
| Answer» Water is pure if can\'t conduct electricity.if it can then it is not pure | |
| 6238. |
Define:- power,joule,energy consumed |
| Answer» Power is watt and watt is equal to joule. Energy is the rate of doing work. | |
| 6239. |
What is Newton\'s second law of motion? |
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Answer» The rate of change of momentum which is directly proportional to force and is being applied by unbalanced force. Second law of motion:if states that the rate of change of momentum of a body is directly propostional to the unbalenced force is applied to the force of direction The rate of change of momentum is directly proportional to force and is directed as that of force |
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| 6240. |
How does **** and hen actas a protective tissue |
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| 6241. |
Please provide me some practical based questions for physics of class 9 |
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| 6242. |
A 5J of work is done in lifting a body of 200kg , how height will it rise. Where g=10m/s^2 |
| Answer» {tex}\\begin{array}{l}\\mathrm w=\\mathrm{mgh}\\\\5=\\;200\\times10\\times\\mathrm h\\\\\\mathrm h=\\frac5{200\\times10}\\;\\mathrm m\\\\=\\frac{5\\times100}{2000}=\\frac5{20}=0.25\\;\\mathrm{cm}\\end{array}{/tex}\xa0 | |
| 6243. |
If a body moves with a constant velocity of 2m/s due to an applied force of 10N . Find it \'s power |
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| 6244. |
Hi.can you send me all the derivations of lsn motion by graphical method pls.Thank you |
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| 6245. |
What is membrane boigensis |
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Answer» Proteins and lipids help in building the cell membrane. This process is known as membrane biogenesis. ???????? Refer CELL THE FUNDAMENTAL UNIT OF LIFE chapter class 9 CBSE NCERT text book under the heading ENDOPLASMIC RETICULUM |
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| 6246. |
What is symptoms? ?? |
| Answer» Symptoms are something which we consider as wrong. They are the signs of a particular disease. | |
| 6247. |
What is chloroplast??? |
| Answer» Plastids containing the pigment chlorophyll are known as chloroplasts. They are important for photosynthesis in plants. ??????? | |
| 6248. |
What do you mean be people as resources |
| Answer» People as resource is a way of referring to the people of the country who are an asset for the country. People who are educated, healthy and skilled are considered to be a resource for the country.. | |
| 6249. |
Pulling a Tonga is an example of 3rd law of motion explain |
| Answer» Yes it is the nest example of thitd laws of motion because when we exerts force on tonga then tonga also act the same force on me for oppose my force . | |
| 6250. |
Definition of decantation |
| Answer» Decantation is a process for the separation of mixtures of immiscible liquids or of a liquid and a solid mixture such as a suspension. | |