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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.
| 7251. |
Why is salt sprinkled on icy roads when it snows? |
| Answer» Salting icy roads and walkways lowers the freezing point of the water that forms ice which leads to melting and prevents falling snow or rain from being able to freeze. | |
| 7252. |
Which part of the cell is called brain of the cell |
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Answer» nucleus Nucleus Nucleus Nucleus Nerve cell |
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| 7253. |
Defind variable speed |
| Answer» A variable speed limit is a flexible restriction on the rate at which motorists can drive on a given stretch of road. | |
| 7254. |
What is pure mixture so |
| Answer» What is pure ,mixture ,soulation,alloys , | |
| 7255. |
How does the water kept in an earthen pot (matka) became cool during summer ? |
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Answer» WATER OF MATKA BECAME COOL BECAUSE THE WATER OF MATKA CAME ON THE SURFACE OF IT AND THEN THE PROSSES OF EVAPORATION STARTS, AS WE KNOW THAT EVAPORATION CAUSE COOLING, SO WATER OF MATKA BECAME COOL Which makes it cool The matkas have small pores in them.the water see0s in through and hence evaporating |
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| 7256. |
The smell of hot sizzling food reaches you several metres away |
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Answer» Due to high kinetic energya This process is known as kinetic energy increases As you increase in temparature increases the rate of diffusion. So we get the smell of hot sizzling food from several meters away. Because of high kinetic energy Because the particles of hot slizzy foods have high kinetic energy The smell of hot sizzling food reaches you several metres away because the particles of matter have large kinetic energy as they reaches several metre away and cold food have less kinetic energy so they do not spread in air . |
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| 7257. |
What is plasma membrane and its importance |
| Answer» Plasma membrane\xa0is delicate, thin structure (5-10 nm wide) visible only in electron microscope. It is the outermost layer in animal cell and occurs as a semi permeable covering surrounding the protoplasm. It is made up of lipids proteins and small amount of carbohydrates. It protects the protoplasm and maintains a constant internal environment to the protoplasm. | |
| 7258. |
What is the other name of plasma membrane |
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Answer» Cell membrane Cell membrane Cell membrane , plasmalema, fluid mosac modal,living membrane Cell membrane and Plasmalema Cell wall |
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| 7259. |
Yar koi jaldi se chapter no. 8 ke notes bhej do |
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Answer» U search in google But how can I send you notes over here I did |
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| 7260. |
Chapter 2 is matter surrounding us pure |
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Answer» U search in google I mean notes |
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| 7261. |
Definition of solid |
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Answer» Solid is a closely packed and it have a fixed volume and fixed shape Solid have definite path distinct boundaries and fixed volumes is called a solid Solids are those substance which has volume and shape and which can\'t fill any type of container easily Any thing which has fixed shape any size is called solid Which has fixed volume and fixed shape is called solid A substance which has fixed volume and shape is known as solid Solid is firm and stable in shape; not liquid or fluid. |
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| 7262. |
Defination of latent heat of fusion |
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Answer» Solid to liquid change is called latent heat of fusion . The solid to liquid change is called latrant heat of fusion The amount of heat required to change 1 g of a substance at the temperature of its melting point from the solid to the liquid state without changing temperature. The process in which solid are changes into liquid are called latent heat of fusion |
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| 7263. |
Who. Discover. Plasma |
| Answer» William crokes | |
| 7264. |
Define osmosis? |
| Answer» William Crookes | |
| 7265. |
A cyclist completes five roundsof a circular track of radius of 21m in 12 minutes .find his speed |
| Answer» 5 m/s | |
| 7266. |
Name the different types of plastids and explain their functions? |
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Answer» Plastids are classified in three types:-.cromoplast.chloroplast.leucoplast Chloroplasts-green coloured plastids are known as chloroplasts.they contains the green pigment called cholorphyll.chlorophyll give the plants green colour.Chromoplasts produce theri own DNA. Chromoplasts-geen colured plastids except one colour which us green.it is found in flowers and fruits. Leucoplasts-colourless plastids.its primary function is only for storage. Gchhbjkkvx |
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| 7267. |
Na+ has completely filled K and L shells. Explain |
| Answer» | |
| 7268. |
A racing car has a uniform acceleration of 4ms-2.What distance will it cover in 10s after start? |
| Answer» | |
| 7269. |
What is the difference between evaporation and cooling? |
| Answer» Evaporation is a process in which a liqiud(water) change into gas( water vapour) below its boiling point.Molecules on surface gains the kinetic energy and will come in motion,that is why evaoration is called surface phenomena.Cooling is a process in which gas changes into liquid above the freezing point.Molecules of the gas gain potential energy and interacellular space decreases and then changes the state. | |
| 7270. |
What is the difference between structure and function of vacuoles in plant and animal cells? |
| Answer» Vacuoles of plant cell is large 50 to 90 and vacuoles of animal cell is small 10 to 30 | |
| 7271. |
Ncert solution for class 9 ch 2 chemistry all the activities explanation with answer |
| Answer» | |
| 7272. |
What is the difference between the structure and functions of vacuoles of plant and animal cells? |
| Answer» Plant cell has only one large vacuole that covers almost 90% cellular space sometimes. Plant cells needs larger vacuole because vacuole helps them to maintain turgor pressure within the cell. Vacuoles store water and become turgid when water enters the cell through osmosis. When cell loses water vacuoles helps the cell to retain the shape. Vacuoles also maintain the osmotic concentration within the cell.Animal cells have one or more vacuoles which are smaller in shape. In animal cell the main function of vacuoles is to store nutrients, ions and water. Vacuoles plays an important role in endocytosis and exocytosis. They store the waste material (exocytosis)or food (endocytosis) and transport it inside the cell. Lysosomes secrete its enzymes within it and helps in digestion. bacterias are also engulfed by cell and destroyed in animal vacuole by lysosomal enzymes. | |
| 7273. |
Diagram of meristematic tissue |
| Answer» | |
| 7274. |
Why are light and sound not considered as matter |
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Answer» Because light and sound was not occupies space and not having mass Because they are source of energy. |
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| 7275. |
What is the meaning of polygon |
| Answer» Polygon is a plane figure with at least three straight sides and angles, and typically five or more. | |
| 7276. |
What is the function of rough endoplasmic reticulum |
| Answer» Rough endoplasmic reticulum is associated with synthesis of protines | |
| 7277. |
What is the function of rough ends reticulum |
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Answer» Hope u find it helpful? Synthesis of protein The ribosomes on the RER are synthesizing protein by definition, meaning that ribosomes do not exist in the cell unless they are synthesizing protein from an mRNA template. |
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| 7278. |
Write function of smooth endoplasmic reticulum |
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Answer» A list of some of the things smooth ER does includes:\tsynthesis of fats (lipids)\tMetabolizes (breaks down and builds up) carbohydrates (things like sugars or starches)\tMakes steroids (steroids can include hormones and vitamins)\tDetoxifies (breaks down harmful substances and turns them into safe substances) Synthesis of lipidsResponsible of membrane biogenesis |
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| 7279. |
Write function of vacuole in plant cell |
| Answer» It store souble waste secreation of the cell | |
| 7280. |
How do substance like CO2 and water move in and out of a cell ? discuss. |
| Answer» Substance like CO2 move out of cell by the process of diffusion and the water molecules move out by the process of osmosis | |
| 7281. |
Algae components of lichen is |
| Answer» Autotrophic | |
| 7282. |
Why blue alage is placed in monera not in plantea |
| Answer» | |
| 7283. |
S.I. unit of acceleration |
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Answer» M/s^2 m/sec Meter per second The S.I unit of acceleration is meter per second square N Metre per second Meter per second square The SI unit of acceleration is the meter per second squared or (m s−2) |
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| 7284. |
Why does desert prevents more hot during day and more cool during night |
| Answer» On a hot dry day rate of evaporation is faster. In a desert cooler when exhaust fan is on, hot air enters through the straw mates and at this site evaporation of water takes place and that also at faster rate. It takes away heat from air so the air becomes cool even cooler on a hot dry day. | |
| 7285. |
Convert 573 kelvin to clecius |
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Answer» 573-273=300 273-573=300 degree celcius The formula of converting kelvin to Celcius is C = 273 - K 273 - 573 = 300 degree celcius 300 |
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| 7286. |
What is the formula of acceleration of motion |
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Answer» A=v-u /t a=v-u/t a =v-u÷ta=accelerationv=final velocityu=initial velocityt=time taken |
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| 7287. |
Why distance and displacement both denoted with s |
| Answer» Because as same speed and Velocity is also denoted by V so, as same distance and dispalcement is denoted by S | |
| 7288. |
Why evaporation is called a surface phenomenon |
| Answer» During evaporation, the molecules having higher Kinetic energy goes into the air from the topmost layer of the liquid so its surface phenomenon | |
| 7289. |
What are the factor that effect the crop production |
| Answer» Biotic factors such as pests, insects and diseases reduce the crop production. A pest causes damage to our crops by feeding. Weeds also reduce crop productivity by competing with the main crop for nutrients and light.Similarly, abiotic factors such as temperature, wind, rain etc. affect the net crop production. For example droughts and floods have a great impact on crops sometimes, destroying the entire crop. | |
| 7290. |
What is meant by motion |
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Answer» When the position of an object changes with respect to reference point the object is said to be in motion The movement of an object with respect to time is called motio |
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| 7291. |
The slope of a velocity -time graph gives the __________________________ |
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Answer» Distance \\ displacement It gives a distance Distance |
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| 7292. |
Ca which solution |
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Answer» Calcium Calcium |
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| 7293. |
difference between compound and mixture |
| Answer» \tSl. No.Differentiating PropertyCompoundMixture1DefinitionCompound are substances which are formed by chemically combining two or more elements.Mixtures are substances that are formed by physically mixing two or more substances.2TypesCompounds are three types which are covalent compounds, metallic compounds and ionic compounds.\xa0Note: Compounds can also be classified as organic or inorganic compounds based on the presence of carbon atom.Mixtures are mainly of two types i.e. homogenous mixtures and heterogeneous mixtures.3Substance CategoryCompounds fall under pure substances.Mixtures fall under impure substances.4Composition DetailsThe chemical composition of compounds is always fixed.A mixture can have a variable composition of the substances forming it.5NatureCompounds are always homogeneous in natureMixtures can either be homogeneous or heterogeneous in nature.6Separation of ConstituentsThe constituents of a compound can only be separated by either chemical or electrochemical methods(like extraction).The constituents of a mixture can be easily separated by physical methods (like filtration).\t | |
| 7294. |
Differences between SER and RER ? |
| Answer» \tSr.No.SERRER1.Ribosomes are absent.Ribosomes occur over the surface of RER.2.Synthesis is specialised to synthesize lipids and steroids.Synthesis is specialised to synthesize proteins.3.The products do not pass into lumen.The products pass into lumen of E.R. for transport\xa0to other places.\xa04.Less stableMore stable5.Found in Epithelial cells, Intestinal cells, Sarcoplasmic ReticulumFound in Pancreatic Exocrine cells\t | |
| 7295. |
What type of mixture es are separated by the technique of crystallisation |
| Answer» Crystallization is a solid–liquid separation technique which is\xa0used to\xa0obtain\xa0pure solid crystals from impure sample\xa0of the respective solid. The principle of crystallization is\xa0based on the limited solubility of a compound.E.g. Crystallization is used\xa0to obtain pure sugar from impure sugar. | |
| 7296. |
What is the mass of neutron? |
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Answer» 1.674929 x 10-27 kg Neutron has mass of 1 atomic mass unit (a.m.u)1 a.m.u = 1.67 x 10^-27 kg |
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| 7297. |
Final paper of science |
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| 7298. |
Write a short note on the plant tissue ? |
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Answer» Plz describe it Plant tissue protects the plant. It is in 2 types they are Complex and permanent tissue |
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| 7299. |
Convert 293 kinto celsius scale |
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Answer» 293- 273 = 20°C (Because the formula to change K into °C is K - 273=°C) 293-273=20°C \'C =293K - 273K =20\'C 20 C |
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| 7300. |
Define the term nucleoid in living organism? |
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Answer» In prokaryotic cells, the nuclear region is not well defined. This poorly defined nucleus has a specific name nucleoid. Nucleus is a brain of a prokaryotic cell. In a living organism like bacteria which are prokaryotic have such type of nucleus. This is like a flowing deoxirybo nuclic acid (DNA)and have no definite shape Nucleoid is the brain of the cell. Iti in the centre of the cell. |
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