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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.
| 59151. |
Explain the working of a bio gass plant? |
| Answer» Biogas is a mixture of methane, carbon dioxide, hydrogen and hydrogen sulphide. The major constituent of biogas is methane.Biogas is produced by the anaerobic degradation of animal wastes like cow-dung or plant wastes in the presence of water.The biogas plant has a dome-like structure built with bricks. A slurry of cow-dung and water is made in the mixing tank from where it is fed into the digester. The digester is a sealed chamber in which there is no oxygen. Anaerobic micro-organisms that do not require oxygen decompose or break down complex compounds of the cow-dung slurry. It takes a few days for the decomposition process to be complete and generate gases. The biogas is stored in the gas tank above the digester from which they are drawn through pipes for use. | |
| 59152. |
Explain how efficiency of wood as a fuel can be increases? |
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| 59153. |
What is charcoal ? How is it produced |
| Answer» Charcoal is the lightweight black carbon and ash residue hydrocarbon produced by removing water and other volatile constituents from animal and vegetation substancesCharcoal is produced by burning wood in an insufficient supply of water. This method is called destructive distillation of wood. Charcoal burns without flames, is comparatively smokeless and has a higher heat generation efficiency | |
| 59154. |
Which help book is best of science for class 10 cbse? |
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Answer» Lakhmir singh and manjit kaur ki S chand Or abc Apc You may go for S.chand but but Ncert is must |
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| 59155. |
Why are thermal power plant called so? |
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| 59156. |
Which is the best topic for presentation in science |
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| 59157. |
How to rid of sleepess while study |
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| 59158. |
Notes of chapter life processes |
| Answer» Go to the section of science in cbse guide then Click on option of chapter 6 The 1st option in it is notes So go and take your notes and read or learn itIt\'s yr chice | |
| 59159. |
What is Hoar Froast ? |
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| 59160. |
Practical application of joule heating effect |
| Answer» For exploiting the\xa0heating effect\xa0of electric current, the element of appliances must have high melting point to retain more\xa0heat. The\xa0heating effect\xa0of electric current is used in the following\xa0applications: Electric Bulb: In an electric bulb, the filament of bulb gives light because of\xa0heating effect\xa0of electricity. | |
| 59161. |
what organs are attached to the two bronchi |
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| 59162. |
What is formation of a precipitate |
| Answer» The chemical reaction in which a white coloured substance which is insoluble in water (precipitate) is formed then it is known as precipitation reactionNa2SO4 + BaCl2 (aq) --> BaSO4 (s) + 2 NaCl(aq)In this reaction Barium sulphate is a white colour precipitate and it is insoluble in water. | |
| 59163. |
Define nutrition... |
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Answer» Nutrition is a substance which gives energy Nutrition is the proccesof acquiring energy and minerals for growth development,repairement,reproductin and maintaince of an organisms. Nutrition is nourishment or energy that is obtained from food consumed or the process of consuming the proper amount of nourishment and energy. |
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| 59164. |
Why should the resistance of ammeter be small and that of voltmeter be large? |
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Answer» An\xa0ammeter\xa0has to measure to current flowing through the circuit. Resistance offers an obstruction to the current flow. So, if the resistance of an ammeter is large , the current measured by the ammeter will be quite less as compared to the actual amount of current flowing through the circuit which is undesirable. If ammeter has\xa0zero resistance\xa0, then it will give the exact value of current. But this is not practically possible because every material has some value of\xa0internal resistance\xa0which we can\'t control. For this reason , ammeter must have small resistance Voltmeters\xa0are put in parallel with the load in order to measure the\xa0potential differencebetween two *different* points.\xa0If they are in parallel with the load, then at the first junction the current will split and flow into both paths (Kirchhoff\'s Laws). However, if current is flowing through the voltmeter, then it is not all flowing through the load, and the potential difference across the load would change when the voltmeter is added and removed. This is unfavourable. Therefore, the voltmeter must have a very high resistance so that current doesn\'t flow through it.\xa0 Find video lessons, notes, papers, syllabus, solutions to doubts & more User profile imageLogin / Sign UpHomeClass 1 to 12JEENEETDoubt and SolutionsTextbook SolutionsBoard PapersSample PapersPricingDiagnostic TestB2B PartnersFranchiseeTopper TVTopperlearning CBSE Class 10 - Ask The ExpertAnsweredWhy should the resistance of : a)an ammeter be very small? b)a voltmeter be very large?Asked by | 30th Apr, 2012, 11:09: PMExpert Answer:An ammeter has to measure to current flowing through the circuit. Resistance offers an obstruction to the current flow. So, if the resistance of an ammeter is large , the current measured by the ammeter will be quite less as compared to the actual amount of current flowing through the circuit which is undesirable. If ammeter has zero resistance , then it will give the exact value of current. But this is not practically possible because every material has some value of internal resistance which we can\'t control. For this reason , ammeter must have small resistance Voltmeters are put in parallel with the load in order to measure the potential differencebetween two *different* points. If they are in parallel with the load, then at the first junction the current will split and flow into both paths (Kirchhoff\'s Laws). However, if current is flowing through the voltmeter, then it is not all flowing through the load, and the potential difference across the load would change when the voltmeter is added and removed. This is unfavourable. Therefore, the voltmeter must have a very high resistance so that current doesn\'t flow through it |
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| 59165. |
Why parallel combination is preffered in domestic wiring? |
| Answer» (i)Voltage across each appliance is the same.(ii) If one appliance gets switched OFF, the other can still function properly.(iii) Each appliance can be operated on different current as required. | |
| 59166. |
Difference between combustion and combination reaction |
| Answer» A combination reaction produces a certain substance; a combustion reaction is a vigorous reaction, usually a combination with oxygen, that is accompanied by the production of light and/or heat. In a decomposition reaction, a single substance reacts to make multiple substances as products. | |
| 59167. |
What are the differences between amyotrophic nutrition and heterotrophic nutrition? |
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| 59168. |
What is ascent of SAP and write the forces responsible for it |
| Answer» 17+6y=9 | |
| 59169. |
If the object measure to mirror |
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| 59170. |
What is manure? |
| Answer» Manure is a organic fertilizers | |
| 59171. |
What is retina |
| Answer» \tRetina receives optical image and converts it to electrical impulses.\tRetina acts as the screen for the images formed by the eye lens. | |
| 59172. |
Done whole chapter of biology life process but not able to answer question |
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Answer» Keep practising Give some idea |
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| 59173. |
Why aquatic animals breadth faster than others |
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Answer» Thanks Because in water the amount of oxygen is less and they had breathe continuously to maintain their body |
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| 59174. |
Derive mirror formula? |
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| 59175. |
Physics numerical |
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Answer» Which Plz complete yur ques In which numerical? Solving problem |
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| 59176. |
Why we dip the leaf into alcohol in activity6.1 |
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Answer» to remove chlorophyll from the leaves. To Remove all colour from the leaf To remove all clrophyll from leaf |
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| 59177. |
Bro how\'s the Josh..Tomorrow will be the date of cbse result... |
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Answer» Very high sir Are you fearing or not?? Hmmmmm,? ???? |
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| 59178. |
K2 + H2O = KOH |
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Answer» This is wrong question What is this?? |
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| 59179. |
What is the cause of the ozone. ? |
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| 59180. |
What happen when water is added to quick lime |
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Answer» It gives calcium hydroxide CaO + H2O =Ca(OH)2 + heat energy Water in quicklime then reproduce calcium hydroxide and heat energy it is an example of combination and exothermic reaction |
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| 59181. |
Hi...koi h yaha ya sb gye....meri trh .. |
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Answer» This aap is for studies by cbse dont chat hereRegards,cbse Hii ..astha kaisi ho Hlo Hii. Khushi Ha hoon |
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| 59182. |
How to draw convex lens when object f and p |
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| 59183. |
Puja stream konsi li? |
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| 59184. |
How make to chemical formula |
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| 59185. |
In exothermic and endothermic reaction temperature increase or decrease what happened |
| Answer» In exothermic reactions, when the reaction takes place heat is released so the temperature increases and in endothermic reaction, heat is absorbed so temperature decreases | |
| 59186. |
What are the reaction of aluminothermy? What type of reaction is this |
| Answer» Aluminothermy is the reaction between Aluminum and thermite ( iron oxide ). It is an exothermic reaction...A lot of heat js produced | |
| 59187. |
What is sexual reproduction??(Ch. 8) |
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Answer» Aapne kuch bataya nahi .......kr ke dekh liya Abe saale krke dekh le.. ache se pata chal jayega |
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| 59188. |
Three points of difference between strong and weak acids |
| Answer» \tStrong AcidWeak AcidStrong acids will dissociate completely to produce H+ ions.Weak acids will dissociate partially to produce H+ ions.pH values will be around 0 to 1.pH values will be around 5 to 7.Most of the inorganic acids are strong acids in nature.All organic acids are weak acids.Ex: H2SO4, HNO3, HCl…etcEx: CH3COOH, HNO2, H2SO3…etc\t | |
| 59189. |
What is oxidising agent and redusing agent |
| Answer» Oxidising agent mens adding of Hydrogen and Removing of Oxygen And reducing agent mens adding of Oxygen and removing of Hydrogen | |
| 59190. |
Harsi pai nii ae aaj??? |
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Answer» Ni ??? Hnjii??? Accha????? Unka break chal rha hai...have a break have a kitkat... |
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| 59191. |
What is the value of the each resistances r1 |
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| 59192. |
What is elements. |
| Answer» An element is a substance whose atoms all have the same number of protons: another way of saying this is that all of a particular element\'s atoms have the same atomic number. Elements are chemically the simplest substances and hence cannot be broken down using chemical reactions. | |
| 59193. |
What is Copper-T?? |
| Answer» It prevents pregnancy as it prevents implantation in the uterus. It can cause side effect due to irritation of the uterus. | |
| 59194. |
Give difference between exothermic and endothermic reaction |
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Answer» \tEndothermic ReactionExothermic ReactionA reaction that the system absorbs energy from its surrounding in the form of heat.A reaction that releases energy from the system in the form of heat.The energy is absorbed from the surround into the reactionThe energy is released from the system to its environment.Energy in the form of heatEnergy is released as heat, electricity, light or sound.Melting ice, evaporation, cooking, gas molecules, photosynthesis are few examplesRusting iron, settling, chemical bonds, explosions, nuclear fission are few examples.\t Exothermic reaction gives out or releases heat energy whereas endothermic reaction absorbs heat energy |
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| 59195. |
What is photosynthetic? Explaib |
| Answer» Photosynthesis is an autotrophic mode of nutrition by plants and some bacteria. Photosynthesis is the physico-chemical process by which plants can convert light energy into chemical energy, in the form of carbohydrate from simple inorganic substances like atmospheric carbon dioxide and water. | |
| 59196. |
What are the factors upon which heat dissipated depends? |
| Answer» The main factor on which heat dissipated depends upon the conductor\'s resistivity and consequently the resistance (depends upon length and area) offered by it to current.Now, more resistance would mean more heat emitted and vice versa. | |
| 59197. |
What is skeletons equation |
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Answer» Actually I\'m in very big dought Then what is different in Parsally unbalanced equation? Equations which are not balanced are known as skeletal equations.. |
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| 59198. |
Difference between chemical reaction and chemical equation? |
| Answer» Chemical equation is the representation of chemical reactions using symbols. Chemical reaction is the process in which one reactant breaks or two or more reactants reacts to form one or more products but chemical equation represents the reaction which had occured by symbols. | |
| 59199. |
Kiska kiska marks 75 % aaya h? Im actually sad but its ok :( |
| Answer» Tum kaha se ho ???? Ghz | |
| 59200. |
Science ke practical kon se hai batho |
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