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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.
| 45201. |
Ques) What are functional groups? |
| Answer» functional groups are specific atom, ions, or groups of atom having Consistent properties... | |
| 45202. |
Ques) What are ampnoteric oxides ? |
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Answer» Which react both acid and base ex...Zinc oxide( ZnO ) and Aluminium oxide ( Al2O3 ) Amphoteric substances is that which reacts with both acid and base. When reacts with acid acts as base and when react with base acts as acid An amphoteric compound is a molecule or ion that can react both as an acid and as a base. Many metals form amphoteric oxides or hydroxides. Example : Al2O3 |
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| 45203. |
Ques) Explain the activity series of metal ? |
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Answer» In this activity series element are put according to decreasing order of their reactive properties potassium |sodium |calcium |Aluminium |magnesium |zinc |iron |lead |hydrogen |copper | mercury |silver |gold v Reactivity series is structure of series of metals in order of reactivity from highest to lowest. |
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| 45204. |
Ques) Difference between metal and non metals ? |
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| Answer» | Metals | Nonmetals | \tThese are solids at room temperature except mercuryThese exist in all three statesThese are very hard except sodiumThese are soft except diamondThese are malleable and ductileThese are brittle and can be breakdown into piecesThese are shinyThese are non-lustrous except iodineElectropositive in natureElectronegative in natureHave high densitiesHave low densities\t|
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| 45205. |
Questions) Difference between covalent and Ionic compound? |
| Answer» \tIonic bondsCovalent bonds\xa0Ionic bond is formed by the transfer of electrons from one atom to another atom. It is also known as electrovalent bond.Covalent bond is formed by the sharing of valence electrons between atoms of similar electronegativityOccurs between a metal and a non-metalOccurs between two non-metals.Ionic bonds do not have definite shapeCovalent bonds have definite shapeThey exists in solid state at room temperatureThey exist in liquid or gaseous state\xa0at room temperatureThey have high boiling and melting pointsThey have low boiling and melting points.\t | |
| 45206. |
Questions) What is acid rain? How can PH of soil be measure? |
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Answer» Soil pH can be measured in water (pHw) or a weak calcium chloride (pHCacl) solution The rain which contain harmful chemicals with it i.e that causes damage to trees, crops, buildings and rivers |
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| 45207. |
Question) What is lateral Displacement? |
| Answer» distance between the incident ray and emergent ray after refraction from glass slab | |
| 45208. |
How doea a nuclear reactor work with diagram ? |
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Answer» It is the answer for difference between Fusion and fission Wrong answer.. Srry Fission is the splitting of a heavy, unstable nucleus into two lighter nuclei..Fusion is the process where two light nuclei combine together releasing vast amounts of energy. |
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| 45209. |
Question) What is difference between nucley fission and fusion ? |
| Answer» Nuclear fission:1) Fission is the splitting of a large atom into two or more smaller ones.2) Fission produces many highly radioactive particles.3) Fission reaction does not normally occur in nature.4) Critical mass of the substance and high-speed neutrons are required.5) Takes little energy to split two atoms in a fission reaction.6) The energy released by fission is a million times greater than that released in chemical reactions, but lower than the energy released by nuclear fusion.Nuclear fusion:1) Fusion is the fusing of two or more lighter atoms into a larger one.2) Few radioactive particles are produced by fusion reaction, but if a fission "trigger" is used, radioactive particles will result from that.3) Fusion occurs in stars, such as the sun.4)High density, high temperature environment is required.5) Extremely high energy is required to bring two or more protons close enough that nuclear forces overcome their electrostatic repulsion.6) The energy released by fusion is three to four times greater than the energy released by fission\xa0 | |
| 45210. |
Questions) Fara days law of electromagnetic induction ? |
| Answer» Faraday’s First Law of Electromagnetic Induction states that whenever a conductor is placed in varying magnetic field, electromagnetic fields are induced known as induced emf. If the conductor circuit is closed, a current is also induced which are called induced current.Faraday’s Second Law of Electromagnetic Induction states that the induced emf in a coil is equal to the rate of change of flux linkage. Here the flux is nothing but the product of number of turns in the coil and flux connected with the coil. | |
| 45211. |
Ques) Principal and working of DC generator with diagram ? |
| Answer» \tIf two half slip rings are connected to ends of the coil the AC generator works as DC generator to produce DC current.\tWhen the coil is in the vertical position the induced current generated during the first half rotation rises from zero to maxi¬mum and then falls to zero again.\tAs the coil moves further from this position, the ends of the coil go to other slip rings.\tHence during the second half rotation the current is reversed in the coil itself, the current generated in the second half rotation of the coil is identical with that during the first half of direct current. | |
| 45212. |
Difference between human eye and photographic camera ? |
| Answer» 1. Eye is a live organ for sight whereas a camera is an equipment to capture images.2. Eye uses live cells to detect light while the camera uses a diaphragm to detect light and capture images.3. Stereoscopic vision of eyes allows 3 dimensional images while camera captures only 2 dimensional images.4. The pupil adjusts the size while focusing while in a camera lens moves to change focus.5. Eyes have blind spots while cameras do not. | |
| 45213. |
Give balanced reaction of lead nitrate and potassium iodide. |
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| 45214. |
Ques) Explain the construction and working of human eye with labelled diagram? |
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| 45215. |
Write the working of electric genretar simple only 5 line |
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| 45216. |
Role of plecenta in female |
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Answer» placenta is look like disc shape it transport food , oxygen and other things from mother Embryo gets nutrition from the mother\'s blood with the help of special tissue called placenta......... it is disc shaped and contains villi thatprovide large surface area for glucose and oxygen to pass from the mother\'s blood to the embryo and is also transferred into the mother\'s blood through placenta The main function of placenta is to supply the baby or embryo with necessary nutrition. The blood which passes from the mother\'s body goes to placenta and then it supply to baby in the body........ |
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| 45217. |
What is miclle |
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Answer» A micelle is a spherical cluster of hundreds of molecules of soap A spherical aggregate of soap molecules in the soap solution in water is called a micelle..... Micelle is the structure formed by the hydrocarbon chain of soap molecule when it gets attatched to the dust particle |
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| 45218. |
What is anions and caion |
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Answer» These are the electrodes.anion is connected to positive charge and cation is connected to negative charge Positively charged ions are called cations and negatively charged ions are called anions. Bhai yrr kabhi book bhi dekh laa karooo |
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| 45219. |
Name the products formed when Ethane burns in air |
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Answer» CO2 and H2O Carbon dioxide and water along with heat |
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| 45220. |
What is effervescence?? |
| Answer» It means formation of gas bubble of a liquid by a chemical reaction..... like CO2.. is produced with a effervescence ..... | |
| 45221. |
What is uses of graphite. |
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Answer» Electrodes in batteries, lubricant in engines of vehicles, pencil leads Hi bro |
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| 45222. |
What is focal lenght |
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Answer» Dist between pricnipal axis and centre of curvature It is the distance between pole and focus,..... |
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| 45223. |
Why Fertilistaion not Proceesing without pollination ??? |
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Answer» Sorry mishthi i am not satisfied by your answer? Bcoz without pollination the male gamete i.e., pollen grain would not be able to reach the female part... |
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| 45224. |
Reflex arc ke diag me puri drawing type banani necessary h ya flow chart kaafi h? |
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Answer» If the question is of 1to 3 mark u can draw flow chart if it is of 5 mark then there is no option u have to draw diag. Flow chart is enough yrr |
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| 45225. |
Is anyone online??? |
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Answer» ?? Acha to reply kaise kiya Nope |
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| 45226. |
What is work of electric motor |
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Answer» Electric motor convert electricity into mechanical energy to change electrical energy into mechanical energy |
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| 45227. |
Biogas plant |
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Answer» Biogas is a combustible mixture of methane, carbon dioxide, hydrogen and hydrogen sulphide gas. It was obtained by anaerobic decomposition of human and animal excreta and agricultural and urban waste materials. Biogas is considered an ideal fuel because it has high calorific value and it does not produce smoke. Biogas plant has a dome like structure and a slurry of cow dung and water is made in the mixing tank from where it is fed into digester. The digester is a scaled chamber in which there is no oxygen. It takes a few days for decomposition process to be complete and generate gasses. Hi i am also kaur ? |
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| 45228. |
What is meant by transpiration and transcolation |
| Answer» Transpiration is the loss of water from the surface of leaves in the form of water vapour whereas translocation is movement of nutrients from leaves to other tissues. Transpiration is carried out by xylem whereas translocation is carried out by phloem. | |
| 45229. |
Define allelomorphs |
| Answer» The element which occurs in different forms in nature with widely varying physical properties of the element.. | |
| 45230. |
What is differences between minerals and ores? (At least three point) |
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Answer» What is the meaning of that? ?? Mi |
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| 45231. |
Name the ion which makes water hard |
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Answer» Calcium and Magnesium ions.. Magnesium ion and calcium ion |
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| 45232. |
Explain the advantages of electricity with some interesting examples??? |
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| 45233. |
All belongs to same school? |
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Answer» Na bhai..... कतई na...... May be Na g Noooo Na |
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| 45234. |
Ek question aur Admit card ke liye paisa pay krna pda hai ???? |
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Answer» Naaa Agr ha to phir kitna No No bhai Ha bhai pay krna pdta h |
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| 45235. |
Metal has high melting point and high resistance |
| Answer» So...?? | |
| 45236. |
Vaise yha kitne hai jo insta pe hai |
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Answer» Mai hoon Ha bhai |
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| 45237. |
In cbse board exam any rules are there to write both questions from internal choice questions |
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Answer» Obviously not No Na No No |
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| 45238. |
Electron dot structure for NH3 |
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Answer» Uff yr write sahi kiya tha but wha galat ho gyaa H●N●H =NH3 H H- N-H2 |
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| 45239. |
What is acomodation |
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Answer» Ability of an eye lens to adjust it\'s focal length accordingly to view near by and distinct objects clearly is known as power of accommodation. The ability of eye to adjust it focal length is called accommodation The ability of an eye lens to adjust its focal length according to the distance of the object is called “The Accommodation of Eye” The ability of the eye lens to set its focal length is known as accommodation........... |
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| 45240. |
→→→What are stakeholder? 【【Answer in accordance to Ch-"Management Of natural Resources"】】 |
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Answer» Stakeholders are the the person or group of persons or organisation which have a interest on a particular topic.for Example stakeholders of forest r activists or any other who have some interest on forest. The person with an interest in something is known as a stakeholder for example local people living near forest government an activist |
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| 45241. |
Aisa curry jo metal hai? Think think challenging u all ..☺ |
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Answer» Mercury I knowww???☺️☺️☺️☺️☺️☺️ it\'s murcury??? क्वेश्चन समझ नहीं आया तो दोबारा पूछना |
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| 45242. |
Why alkanes are saturated compounds (2M) |
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Answer» Hydrocarbons having single bonds are known as SATURATED HYDROCARBONS. The saturated hydrocarbons having single bonds are called alkanes. For example, Methane, Ethane etc. The general formula for alkanes can be written as CnH2n+1, where n = 2, 3, 4. Hey Buddy ! ☺______________________________Alkanes are saturated Hydro Compounds because they contains a single bond between its carbon atoms.☺☺_____________________________#PlayBold✌ |
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| 45243. |
What is neurology |
| Answer» It is a branch of science which deals with the disorders of nervous system...... | |
| 45244. |
Soaps are formed by sponification of ..? |
| Answer» Fatty acids and glycerol | |
| 45245. |
Why solid iron doesn\'t burn but iron fillings burn vigorously on sprinkling onto the burner? |
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Answer» Solid iron doesn\'t burn but iron fillings burn vigorously on sprinkling onto the burner because the air gets to it.. Iron has a strong molecular force of attraction. Hence when heated it doesn\'t reach to its ignition temperature and doesn\'t burn. But iron fillings when sprinkled in flames attain the ignition temperature ( as iron fillings are comparatively smaller particles) and gain larger surface area for the reaction. Therefore they burn vigorously............ |
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| 45246. |
Y it is science |
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Answer» A metal ytrium book khol ke dekho p table m What does it mean...??? Ytrium ???? What is it? What u want to ask ? |
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| 45247. |
What are genetic |
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Answer» Good answer pratham Genetic processes work in combination with an organism\'s environment and experiences to influence development and behavior, often referred to as nature versus nurture. The intracellular or extracellular environment of a cell or organism may switch gene transcription on or off genetics is branch of science which deals with heredity and variation |
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| 45248. |
Koi bata sakta hai ki pic kaise send kar sakte hai |
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Answer» Is pe Kithe krni te pic send? |
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| 45249. |
Which element have symbol W |
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Answer» Scientific name of tungsten is wolfram so its symbol is W Tungesten Its Tungsten @diti Tungsten |
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| 45250. |
Write the formula of ethyl ethanoate |
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Answer» CH3COOC2H5 CH3COOC2H5 Its otherwise called as easter ch3cooc2h5 CH3COOC2H5 |
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