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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.
| 51151. |
What determines the rate at which the energy is delivered by the current |
| Answer» The rate of consumption of electric energy in an electric appliance is called electric power. Hence, the rate at which energy is delivered by a current is the power of the appliance. | |
| 51152. |
Why does the cord of an electric heater not glow while the heating element does? |
| Answer» The heating element of the heater is made up of alloy which has very high resistance so when current flows through the heating element, it becomes too hot and glows red. But the resistance of cord which is usually of copper or aluminum is very low so it does not glow. | |
| 51153. |
What is OHM \'s law |
| Answer» It stating that electric current is proportional to voltage and inversely proportional to resistance at temperature is constant | |
| 51154. |
Hlo i am akanksha tomar please give answer that what is resistance. |
| Answer» Resistance is a measure of the opposition to current flow in an electrical circuit. Resistance is measured in ohms. | |
| 51155. |
Why do we use dimension for measurement? |
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Answer» Nooo Himanshi ap insta par ho kya Are you guys here |
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| 51156. |
Amplifier |
| Answer» Amplifier is a battery device use for amplifie sound.It is also used by some people who cant able to listen properly.So this collect sound from environment and amplifie it and reciever present in device convert this sound in the form of electrical signal,so from this device people can hear.In some function amplifier is presentin speaker for clear sound. | |
| 51157. |
What was the main reason to lay back non-cooperation movement? |
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| 51158. |
Define strong acid? |
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Answer» Acids that give high concentration of H+ ions on ionisation in aqueous solution are said to be strong acids and acids which give less H+ ions\xa0on ionisation in aqueous solution are said to be weak acids.Examples of Strong acids : Hydrochloric acid and nitric acidExamples of Weak acids : Acetic acid and formic acid Those acid which are ionized in aqueous solution called strong acid |
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| 51159. |
How does electric motor works ? |
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Answer» Thankyou for the ans \tWhen the current begins to flow, current flows through brush X, then A to B, B to C, C to D and then to brush Y and into the battery.\tNow applying Fleming\'s Left Hand Rule to wire AB, Current is along AB, Magnetic Field is as shown (North-> South), the motion of the wire is downwards.\tNow applying Fleming\'s Left Hand Rule to wire CD, Current is along CD, Magnetic Field is as shown (North-> South), the motion of the wire is upwards.\tThe rectangular coil begins to move in the anti-clockwise direction\tNote that during anti-clockwise motion, the split rings and axle also move, whereas the brushes don\'t move.\tAfter half a rotation, Wire CD and Split ring Q moves to the left. Wire AB and Split ring P moves to right. Brushes X and Y donot move.\tNow applying Fleming\'s Left Hand Rule to wire CD, Current is along DC. (Battery -> Split ring Q -> DC , Magnetic Field is as shown (North-> South), the motion of the wire is downwards.\tNow applying Fleming\'s Left Hand Rule to wire AB, Current is along BA. (Battery -> Split ring Q -> DC --> CB -> BA --> Split ring P) , Magnetic Field is as shown (North-> South), the motion of the wire is upwards.\tSo, again the coil rotates in the anti-clockwise direction.\tThe reversal of current in the coil results in the continous rotation of the coil. The reversal of current is achieved by the commutator rings\t |
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| 51160. |
How many number of neutrons are released in a fission of U-235? |
| Answer» 2 or 3 | |
| 51161. |
How is the carbohydrate metabolic toxic substances get removed from our body? Desh tb process. |
| Answer» Metabolic enzymes catalyze catabolic reactions that break down\xa0carbohydrates\xa0contained in food. The energy released is used to power the cells and systems that make up your\xa0body. Carbohydrate metabolism\xa0begins in the mouth, where the enzyme salivary amylase begins to break down complex sugars into monosaccharides.\xa0In the metabolism of\xa0carbohydrates, the\xa0liver\xa0helps to ensure that the level of sugar in your blood (blood glucose) stays constant. If your blood sugar levels increase, for example after a meal, the\xa0liver\xa0removes sugar from blood supplied by the portal vein and stores it in the form of glycogen. | |
| 51162. |
6th mass extinction |
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| 51163. |
What is the main component of natural gas? |
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Answer» The main component of natural gas is methane CH4\u200b some other gases like butane ethane are also present. Hydrogen |
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| 51164. |
What is (rho) |
| Answer» Rho is restivity | |
| 51165. |
What is the parasitic movement. |
| Answer» Parasites are living organisms that live and feed on an organism\'s or host\'s body. They jump from one host to the other damaging the body as they go along the most common carriers like mosquitoes and tick which are never harmed by these parasites. some ex-are worms, fleas and leeches etc.... | |
| 51166. |
What is a villy and what is a work doing the |
| Answer» The tiny projections on the inner surface of the small intestine which help in absorbing the digested food are called villi. These helps to increase the surface area of intestinal walls. | |
| 51167. |
What are differences between autotrophic nutrition and hetrotrophic nutrition? |
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Answer» Autotrophic nutrition for those nutrition in which organ is prepare its own food by photosynthesis example growing plants where is heterotrophic nutrition of those nutrition in which organ is they do not prepare their own food organisam independent for human being Autotrophic nutrition are those nutrition in which organism prepare its own food ....by photosynthesis...eg. Green plants whereas heterotrophic nutrition are those nutrit in which organism do noy prepare its own food...organisms are independent for food .....eg. Human beings............................HOPE THIS WILL HELP U..??? |
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| 51168. |
Give the properties of a respiratory membrane |
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Answer» Membrane which protects our respiratory system The respiratory membrane is very thin. It has 4 layer It consists of the alveolar wall, the capillary wall,and their basement membrane.The respiratory membrane is very thin (less than 0.5mm) It as four layers It consists of |
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| 51169. |
Pls help in choosing best guide for science |
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Answer» Use my CBSE guide. All in one book a good choice you can also buy golden book. U like and lakhmir singh is good. Now you can also try byjus. देख भाई गाइड की कोई आवश्यकता तो है नहीं गाइड कोई काम को नहीं आवे इसलिए गाइड खरीदने रहने दो मेरी |
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| 51170. |
power unit |
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Answer» Watt Watt The unit of power is watt Power unit is Watt Watt |
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| 51171. |
Explain brief about the all those combination |
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| 51172. |
What are the types of nutrition ? Define them. |
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Answer» There are two types of mode of nutrition ...autotrophs ...organisms which make their own food ...other is hetrotrophs.. Organisms which depend on autotrophic organisms for their food There are two types of nutrition:Autotrophic and Hetrotropic modes of nitrition.Autotrophic nutrion : a nutrion in which organism prepare their own food. Types of nutritionThere are two main types of nutrition:-(A)autotropic nutrition - the organism Which prepare there food themselves are called autotropic mode of nutrition.(b) hetrotropic- the organism which depend on other organism for food are called heterotropic mode of nutrition there are two type of Nutrition-- autotrophic nutrition and heterotrophic nutritionautotrophic which organism synthesise their own foods heterotrophic where the organism is dependent on others for the food There are two types of nutrition a) heterotrophic nutrition b)Autrotropic nutrition. The living thing which synthesis their own foood is called autrotropic nutrition and the living thing which are not synthesis own food is called heteritropic nutrition. |
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| 51173. |
What is the power of the torch bulb rated at 2.5 v and 500 ma ? |
| Answer» 500ma=0.5 A. So, P=VI= 2.5×0.5= 1.25 W | |
| 51174. |
In biology subject 1 chapter of class 10 question is( what is starch powder) |
| Answer» The soft white testeless that is insoluble in water at room temperature, alcohol or other solvent made up of plant starch is know to be starch powder. | |
| 51175. |
Write short note on gallbladder and tongue |
| Answer» The gallbladder is a small pouch that sits just under the liver. The gallbladder stores bile produced by the liver. In response to signals, the gallbladder squeezes stored bile into the small intestine through a series of tubes called ducts. Bile helps digest fats, but the gallbladder itself is not essential.The gallbladder serves as a reservoir for bile while it\'s not being used for digestion. The gallbladder\'s absorbent lining concentrates the stored bile. The bile helps the digestive process by breaking up fats. It also drains waste products from the liver into the duodenum, a part of the small intestine.The tongue is vital for chewing and swallowing food, as well as for speech. The four common tastes are sweet, sour, bitter, and salty. A fifth taste, called umami, results from tasting glutamate (present in MSG). The tongue has many nerves that help detect and transmit taste signals to the brain. | |
| 51176. |
which reaction occur in body to breakdown molecules |
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Answer» Catabolic reactions (to release energy) Catabolic reactions\xa0these are the\xa0reactions which\xa0breakdown organic molecules for energy. Break\xa0down sugars for energy\xa0and\xa0fat for energy, bta do |
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| 51177. |
What is chemical reaction ? Explain briefly |
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Answer» A reaction in which a change occurs in a substance and results in a change in its identity and composition to form a new substance which has its own characteristics and properties During a chemical reaction, the substances that react are known as reactants whereas the substances that are formed during a chemical reaction are known as products. Six common types of chemical reactions are discussed below.\tTypes of Chemical ReactionsExplanationGeneral ReactionCombination reactionTwo or more compounds combine to form one compound.A + B\xa0→ ABDecomposition\xa0reactionThe opposite of a combination reaction – a complex molecule breaks down to make simpler ones.AB\xa0→ A + BPrecipitation\xa0reactionTwo solutions of soluble salts are mixed resulting in an insoluble solid (precipitate) forming.A + Soluble salt B → Precipitate + soluble salt CNeutralization reactionAn acid and a base react with each other. Generally, the product of this reaction is a salt and water.Acid + Base\xa0→ Salt + WaterCombustion\xa0reactionOxygen combines with a compound to form carbon dioxide and water. These reactions are exothermic, meaning they give off heat.A + O2\xa0→ H2O + CO2Displacement\xa0reactionOne element takes place with another element in the compound.A + BC\xa0→ AC + B\t Process in which new compounds with new properties are formed |
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| 51178. |
What is antibiotics?? |
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Answer» Mention not tyagi sis.... Thanks sis Thanks ? bro how are you a medicine which is used for destroying bacteria and curing infections...... |
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| 51179. |
what is models |
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Answer» Sometimes, if scientists can\'t observe an event directly, or the experiments might not be safe for humans yet, they use a model............... No need for sorry.... |
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| 51180. |
What is one volt ?? |
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Answer» Bas dost ha yha par jada baat karna thik nahi barna phir se koi hume report kar dega agar ap kisi aur social media par to bha par baat karte ha please I will explain you their To tma us sa baat kyou kr nee ha vo ha kon thumari Samarakee se contact nahi ho rha One volt is defined as the work done to move a columb of charge in 1 second in a current carrying circuit. Hnn bolo kya help chiya mere tma ankit |
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| 51181. |
Give a some characterstic feature of π bond? |
| Answer» It is a covalent bond formed by a lateral or sideways overlap of atomic orbitals. It is a weak bond due to the lower extent of overlapping. It is possible between two \'p\' orbitals only. | |
| 51182. |
Which Harmone is responsible for balancing body |
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Answer» ACTH.It is secreated from yhe glandular epethilum tissue.It also helps in the balancing the harmones. Adrenocorticotropic Hormone (ACTH) |
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| 51183. |
Why should curd and sour subtances not keot in brass and copoer vessels |
| Answer» Sour substances are Aidic in nature,i.e, they have acids in them. So, when they are kept in brass or copper vessels, they react with them and form poisonous or better to say toxic elements which may prove harmful for human body. So they are not kept in metal containers.\xa0 | |
| 51184. |
WHAT DO YOU MEAN BY ELECTRIC POWER |
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| 51185. |
What are the function of conponent of blood |
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Answer» PlasmaThe liquid state of blood can be contributed to plasma as it makes up for 50% of blood. It is pale yellow in colour and when separated, it consists of salts, nutrients, water and enzymes. Blood plasma also contains important proteins and other components necessary for overall health. Hence, blood plasma transfusions are given to patients with liver failure and life-threatening injuries.Red Blood Cells (RBC)Red blood cells consist of Haemoglobin, a protein. They are produced by the bone marrow to primarily carry oxygen to the body and carbon dioxide away from it.White Blood Cells (WBC)White blood cells are responsible for fighting foreign pathogens (such as bacteria, viruses, fungi) that enter our body. They circulate throughout our body and originate from the bone marrow.PlateletsTiny disc-shaped cells that help regulate blood flow when any part of the body is damaged, thereby aiding in fast recovery through clotting of blood. Land boor |
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| 51186. |
WhT is boimagnification |
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Answer» Increase in concentration of the pollutants or toxic substances in the successive trophical levels of food chain in an ecosystem is called biomagnification or biological magnification The accumulation of toxic substances from one trophic level to another is called biomagnification |
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| 51187. |
Describe the process of respiration in human beings. |
| Answer» Respiration: The process of releasing energy by the oxidation of food is known as respiration. The process of respiration involves intake of oxygenated air into the cells for breaking the food and releasing energy.Mechanism of respiration:i. Air is drawn into the body through the nostrils.\xa0ii. The air from the nasal cavity passes to the pharynx, which leads to the trachea, through a slit called glottis.iii. The trachea runs down the neck and divides into two bronchi, which lead into the lungs and further divide into smaller bronchioles.\xa0The smallest bronchioles terminate into alveoli.\xa0iv. The walls of the alveoli are thin and covered by blood capillaries to facilitate the exchange of gases in the lungs.v. In the alveoli, the exchange of gases takes place, CO2\u200b from the blood is replaced with O2\u200b and CO2\u200b is removed out of the body.vi. In humans, for the process of respiration, air is drawn into the lungs by the process\xa0of breathing.When an individual inhales, the diaphragm moves down, and the chest cavity expands and the oxygen\xa0rich air is drawn into the lungs. When the individual exhales, the diaphragm relaxes and the chest cavity moves back to its relaxed position and\xa0the carbon dioxide rich air is expelled out of the body. | |
| 51188. |
Describe the working of nuclear power plant |
| Answer» \xa0A nuclear power plant produces electricity with the help of a nuclear fuel (uranium-235 or plutonium-239)\xa0through a self-sustaining fission chain reaction (nuclear reactions) that releases energy at a controlled rate.Nuclear fission reaction is used to generate electricity in nuclear power plants. Most of the power plants use uranium 235 as fuel to produce heat.In a nuclear power plant, the fission of nuclear fuel, uranium 235 is carried out in a steel pressure vessel of the nuclear reactor. The enriched uranium 235 rods are inserted in a core made of graphite blocks inside the reactor. This graphite is called as the moderator because it slows down the speed of neutrons for an effective nuclear fission. In between the uranium rods, boron / cadmium rods are also inserted which are called as the control rods.These rods absorb excess neutrons and controls the fission reaction. The nuclear reactor consisting of all the above ( nuclear fuel, control rods, moderator,etc.) is enclosed in a chamber having thick walls to absorb the nuclear radiations. Heavy water (or liquid sodium or carbon dioxide) is used as a coolant to transfer the heat produced in the reactor.\xa0The controlled fission of uranium 235 inside the reactor produces a lot of heat energy . The coolant is pumped into the reactor by using a pipe. The coolant absorbs the heat energy released during the nuclear reaction and this extremely hot coolant passes through the coil of a heat exchanger containing water . The water absorbs heat from the hot coolant and boils to form steam. This hot steam at high pressure is passed to a chamber having a turbine .The pressure of steam makes the turbine rotate. The shaft of the turbine is connected to a generator. When the turbine rotates,its shaft also rotates and drives the generator. The generator thus produces electricity. | |
| 51189. |
Male how to produce speam |
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Answer» Cut it Through panis |
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| 51190. |
What are the economic goals desired by people |
| Answer» Some common goals that are desired generally by all types of people are as follows-\tto look after their parents\tto become successful\tto do some thing unique\tif we talk about profession then most of the people want to go on engineering,doctor,upsc,etc | |
| 51191. |
What is formula of lead nitrate |
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Answer» Pb(NO3)2 Pb(NO3)2 |
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| 51192. |
Where does spinal cord end in? |
| Answer» Spinal cord is a cylindrical structure which begins in continuation with medulla and extends downwards. It is enclosed in a bony cage called vertebral column and is surrounded by membranes called meninges. It is concerned with spinal reflex actions and the conduction of nerve impulses to and from the brain. | |
| 51193. |
C8H18+O2=Co2+h2o |
| Answer» To iska kya karu | |
| 51194. |
What is binomial nomenclature |
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Answer» It is the system of writing scientific names of organisms. It states that the name of organism should have two parts and each of them should be underlined separately if written and be in italics ; bold and underline verse if typed. First letter of 1st part should be capitalized and 1st letter of 2nd part should be in smalle case . It is the formal naming system for living things that all scientists use. It gives every species a two-part scientific name. |
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| 51195. |
How is small intestine designed to absorb food? |
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Answer» It is designed with small finger like projections called villi to increase area for absorption and it is a highly coiled structure too . Small intestine contains finger like projections called villi it helps to provide large surface area for the absorption of food |
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| 51196. |
How can we say that all bases are alkalies but all bases are not alkalies |
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Answer» All alkalies are bases but all bases are not alkalies because water soluble bases are only called alkalies. Because all bases are disolve in water but all alkali does not Question is incorrect |
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| 51197. |
Explain Respiration in plantsRespiration in animalsRespiration in human beings (mechanism) |
| Answer» Respiration is a process in which glucose is broken down with the help of oxygen and energy is released along with the production of carbon dioxide and water.There are two types of respiration i) aerobic respiration ii) anaerobic respiration.Aerobic respiration- the process of respiration that takes place in the presence of oxygen.Example- glucose(a 6-carbon molecule) breaks into pyruvate(a 3-carbon molecule) and in the mitochondria pyruvate is broken down into 3 molecules of carbon dioxide and water with the release of energy.Glucose -->\xa0pyruvate + energy à carbon dioxide + water + energy.Anaerobic respiration- the process of respiration that takes place in the absence of oxygen.Example-\tIn yeast cells, glucose (a 6-carbon molecule) breaks into pyruvate (a 3-carbon molecule) and pyruvate is then converted to ethanol(a 2-carbon molecule) and carbon dioxide.Glucose -->\xa0pyruvate + energy --> ethanol + carbon dioxide + energy.\tIf there is a lack of oxygen in our muscle cells, pyruvate breaks in a different pathway. Glucose (a 6-carbon molecule) breaks into pyruvate (a 3-carbon molecule) and pyruvate is then converted to lactic acid (a 3-carbon molecule) along with the release of energy.Glucose -->pyruvate + energy --> lactic acid + energy.The energy released during the process of respiration is immediately used to synthesize another molecule called as\xa0ATP.ATP is made from ADP and inorganic phosphate with the help of energy released during respiration.ATP is broken down into a fixed amount of energy and then drive the endothermic reactions in the cell. | |
| 51198. |
What is a life? (From life process.).bio. |
| Answer» Life can be defined as a state that all living organism have and it is supported by life processes. If any of the the life process will stop,then the state of life or being alive will end up. For ex : till the time span we are breathing, we are alive but if we will stop breathing we will lose life and become dead. | |
| 51199. |
Difference btw sexual and asexual reproduction |
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| Answer» | Asexual Reproduction | Sexual Reproduction | \tOccurs in lower invertebrates, lower chordates, and prokaryotic microorganisms and in some eukaryotic single-celled and multi-celled organisms.Occurs almost in all types of multicellular organisms including humans, animals, and higher plants.It is uniparental.It is usually bi-parental.Gametes are not formed.Gametes are formed.Somatic cells of parents are involved.Germ cells of parents are involved.No fertilization occurs.Fertilization takes place.The absence of reproductive organs.Presence of fully developed reproductive organs.Only mitosis type of cell division occurs.Both meiosis and mitosis type of cell division occurs.Original parent disappears after the process of reproduction.Original parents remain alive after the process of reproduction.The progeny and the parent will be genetically identical.The progenies will be genetically different from the parents.\t|
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| 51200. |
What is the composition of aqua -regia solution . |
| Answer» Mixture of concentrated nitric and hudrochloric acid. | |