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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.
| 54601. |
Role of digestive enzymes |
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Answer» The digestive enzymes help the digestive sytem to speed up the processes that is why they are called bio - catalysts. In our body more than one enzyme are secrete . In mouth salivary glands secrete saliwa juice which help in cutting a small molecules of food . Next tommrow |
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| 54602. |
Different b/w formantion in yeast & areobic respiration on the basis of endproduct formed ? |
| Answer» In yeast mid product is formed namely ethanol (c2h50h) and in aerobic respiration end product is formed..i.e.(co2 and. h2o) | |
| 54603. |
Which book is best for science???? |
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Answer» S.chand school book of science Ncert,S.chand and arihant NCERT(national council of education research and training) भर्ती भवन First of all ncert would be must then you take S.chand and may if do you want cardoba Ncert must be first Science for 10th Class: Physics by Lakhmir Singh and Manjit Kaur. |
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| 54604. |
Define lorentz force with diagram |
| Answer» Lorentz force, the force exerted on a charged particle q moving with velocity v through an electric E and magnetic field B. The entire electromagnetic force F on the charged particle is called the Lorentz force (after the Dutch physicist Hendrik A. Lorentz) and is given by F = qE + qv × B. | |
| 54605. |
Differentiate between reaction and changes |
| Answer» | |
| 54606. |
What do you mean by reaction |
| Answer» A reaction is an action taken in response to something. If you\'re telling your parents that you want to move out, you\'ll see by their reaction that they\'re sad about it. A reaction is often a physical in nature. A chemical reaction describes the way a chemical behaves when combined with another substance. | |
| 54607. |
What do you mean by chemical |
| Answer» A process that involves rearrangement of the molecular or ionic structure of a substance, as distinct from a change in physical form or a nuclear reaction. | |
| 54608. |
What is difference between prokaryotic and protista |
| Answer» Prokaryotes are usually single-celled organisms. They have plasma membrane surrounding the cell but no membrane bound organelles such as the mitochondria, nucleus or Golgi bodies. Protists are all eukaryotes and therefore all have cell organelles, most of them are single-celled but multi-celled form exists. | |
| 54609. |
What do you mean by tragor? |
| Answer» Trager Name Meaning. German (Träger) and Jewish (Ashkenazic): from German Träger, Yiddish treger, agent derivatives of Middle High German tragen \'to carry\', hence an occupational name for someone who carried a load, a peddler or porter, or, in the case of the German name, a legal guardian or guarantor. | |
| 54610. |
What are factors of abiotic components |
| Answer» In biology, abiotic factors can include water, light, radiation, temperature, humidity, atmosphere, and soil. | |
| 54611. |
What is electrolysis explain in it with activity |
| Answer» Chemical decomposition produced by passing an electric current through a liquid or solution containing ions. | |
| 54612. |
Write the function of Chamber of the heart |
| Answer» The function of the upper chambers, the atria, is to more efficiently prime the lower chambers, the ventricles, which pump the blood through the lungs and the body. | |
| 54613. |
Who discover joule law and when |
| Answer» The English physicist James Prescott Joule discovered in 1840 that the amount of heat per second that develops in a wire carrying a current is proportional to the electrical resistance of the wire and the square of the current. | |
| 54614. |
What is the advantage of four chambered heart? |
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Answer» In four chambered heart, left half is completely separated from right half by septa. This prevents oxygenated and deoxygenated blood from mixing. This allows a highly efficient supply of oxygenated blood to all parts of the body. This is useful in animals that have high energy needs, such as birds and mammals. It allows us to send our dirty blood to the cleaners- the lungs and our clean blood to the rest of the body without having to mix the two. |
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| 54615. |
What is the formula of sodium acetate? |
| Answer» Nach3coo | |
| 54616. |
Which has the greater resistance 100w-220v and 60w-220v.explain |
| Answer» P1=100 WV1 = 220 VP = VIP = V (V/R)P = V2/R100 = (220×220)/R1R1 = 484 ohmNow, P2 = 60 WV2= 220 V60 = (220×220)/R2R2 = 806.6 ohmHence R2 is greater than R1 | |
| 54617. |
The difference between egestion and excretion |
| Answer» \tEgestionExcretionThe process involves removing undigested waste products food from the body of the organismThe process involves removing wastes from the cells of organismsDischarged materials are Undigested food and other toxic substances leftover from digestionDischarged materials are Metabolic wastes such as carbon dioxide or oxygenEgestion mainly happens through the **** or the mouth. (animals such as jellyfish use their mouth to both consume and discharge wastes)Excretion happens through the nose, skin and the urethraOnly animals undergo esgestionExcretion happens in both plants and animals\t | |
| 54618. |
The difference between line wire and neutral wire is_in respect of potential difference? |
| Answer» The live is brown, the neutral is blue and the Earth wire is green or yellow.Live wire:\xa0The live wire is also called the phase wire.\xa0The live wire is connected directly to the generators of the current supply company. The main fuse is connected to the live wire.\xa0If a fault occurs where the live wire is connected then the Earth wire allows a large current to flow through the live and Earth wires. This overheats the fuse which melts and breaks the circuit. So we should never touch this wire because if someone accidently touches this wire, he may receive an electric shock which may be fatal and can cause death.Neutral wire:\xa0The neutral wire completes the circuit and is the \'return\' wire which connects the appliance to that terminal of the source of electric supply which is earthed. The neutral wire is at approximately 0V.\xa0The main switch is connected to the live and neutral wires. | |
| 54619. |
In multicellular organism simple diffusion is is not required to meet the energy needs .why |
| Answer» In multicellular organisms such as man, the volume of the human body is big and hence, oxygen cannot diffuse into all the cells of the human body quickly. Diffusion, being a slow process will take a lot of time to circulate oxygen to all the body cells. Hence, diffusion is insufficient to meet the oxygen requirements of multicellular organisms like humans | |
| 54620. |
Explain multiple fission in plasmodium ? |
| Answer» Multiple fission in Plasmodium: It is an asexual mode of reproduction in organisms. Here, the nucleus of the organism divides repeatedly to form a number of equal-sized daughter nuclei and each daughter nuclei breaks away together with a small portion of the cytoplasm. | |
| 54621. |
Explain binary fission in Amoeba? |
| Answer» The type of asexual reproduction in which an animal reproduces by dividing into two individuals is called as the binary fission.It is usually found in single celled organisms such as “AMOEBA”.It begins the process of reproduction by the division of its body into two nuclei.This is followed by division of its body into two each part receiving a nucleus.Finally two daughter amoeba are produced from one parent amoeba. | |
| 54622. |
What is cleaning agent of soap |
| Answer» When soap is dissolved in water, its hydrophobic ends attach themselves to dirt and remove it from the cloth.First, the molecules of soap arrange themselves in micelle formation and trap the dirt at the centre of the cluster.These micelles remain suspended in water like particles in a colloidal solution.The various micelles present in water do not come together to form a precipitate as each micelle repels the other because of the ion-ion repulsion.Thus, the dust particles remain trapped in micelles (which remain suspended) and are easily rinsed away with water.\xa0Hence, soap micelles remove dirt by dissolving it in water. | |
| 54623. |
How does control and coorndination happens in human beings. |
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Answer» Through nerves At 10pm |
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| 54624. |
What is the difference between chemical reactions and chemical equations? |
| Answer» Chemical Equation :-A chemical equation is the symbolic representation of a chemical reaction in the form of symbols and formulae, wherein the reactant entities are given on the left-hand side and the product entities on the right-hand side........Chemical Reaction :-A chemical reaction is the change of a substance into a new one that has a different chemical identity.......... | |
| 54625. |
Potential and potential difference |
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Answer» Electric potential is the work done to move a positive current from infinity to that point but potential difference is the work done to move a unit charge from one place to that point... And i hope u like my answer Sry unable to understand yur question |
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| 54626. |
Write down an expression for the resistance of a metallic wire in terms of the resistivity ? |
| Answer» Resistance = Resistivity * length of metallic wire/Area of cross section of wireR =\xa0ρ l/a | |
| 54627. |
Scince working model how to make |
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| 54628. |
Periodic table how they are arrange |
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Answer» Above answer is wrong They have their own valency you can check them the elements below carbon has valence of 4 only try it According to their atomic number. |
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| 54629. |
What is the role of the acid in our stomach ? |
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Answer» It\'s main function to break the food into more simpler form and it also helps in digestion . Actually the main work of hcl(hydrochloru acid) is to make the medium acidic so that pepsin can be able to do his work |
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| 54630. |
What is solar heating device |
| Answer» Solar heating device like a solar cooker uses reflector to reflect sunlight to a small area where the cooking container is placed. The light from the sun is actually focused at the container which gets heated thereby cooking the food. | |
| 54631. |
Why current is flow in metal not in non metal? |
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Answer» If u look than a answer can be that metals have least restivity than non metals hence they are good conductor Metals is good conductor of heat and electricity because of free mobile electrons in it.Non metal cannot conduct electricity Because they have no Free mobile electron. We all know that in solid electrons are carrier of electricity while ions are carrier in liquids.but note that some non-metal can conduct electricity like graphite an allotrope of carbon. |
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| 54632. |
KMnSO4+S2O+H20--. k2so4+mnso4+h2so4. Balance the equation |
| Answer» 2kmno4+5so2+2h2o------k2so4+2mnso4+2h2o | |
| 54633. |
Notes on pollution |
| Answer» Pollution can be defined as the introduction of substances that contaminates the environment and cause adverse effects on the natural surrounding. Pollution not only damages the ecology but also affects the living conditions of living beings to a great extent. The substances that cause pollution are called pollutants which can be solid, liquid or gases.The major forms of pollution include land, air and water. In recent times, noise, light and plastic pollutions are also garnering huge attention from the environmentalists. Each of these types is explained below.\tWater Pollution: The contamination of water bodies with harmful pollutants refers to water pollutions. The introduction of contaminants is generally due to human activities like improper sewage treatment, oil spills in water bodies, etc.\tAir Pollution: Air pollution refers to the addition of contaminants (chemicals, harmful gases, particulates, biological substances, etc.) in the atmosphere which pose a great threat to both society and health.\tSoil Pollution: Soil pollution, also called soil contamination refers to the degradation of land due to the presence of chemicals or other human-made substances in the soil. The xenobiotic substances alter the natural composition of soil and affect it negatively.\tNoise Pollution: Noise pollution is generally man-made and refers to the excessive amount of noise in the surrounding that causes disruption in the natural balance. In terms of decibels, noise is a sound which is above 80 decibels. | |
| 54634. |
Why do electricians wear rubber hand gloves while working with electricity ? |
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Answer» Rubber glove is an insulator. Insulator :- which doesn\'t allow electric current to follow through them. So electrician doesn\'t get shock if they wear rubber glove. Rubber is an insulator and does not allow the passage of electric current through it, so when electricians wear rubber gloves electric current cannot pass through them, so they don’t get shock Because rubber is resistent to electricity |
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| 54635. |
What happens to the resistance as the conductor is made thinner ? |
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Answer» \xa0Resistance of a conductor is inversely proportion to its area of cross section so resistance is increased as the conductor is made thinner as thin wire will have smaller area of cross section. As resistance is inversely proportional to the area of cross section, So if the conductor is made thinner it\'s resistance will increase... |
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| 54636. |
Why we clean magnesium ribbon before burn in air |
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Answer» Magnesium ribbon is used to remove the protective layer of magnesium oxide from the surface so that it may readily combine with the oxygen of air. Magnesium ribbon is a very reactive metal. When stored it reacts with oxygen to form a layer of magnesium oxide on its surface. This layer of magnesium oxide being a stable compound prevents further reaction of magnesium with oxygen. The magnesium is cleaned before burning in air to remove this layer so that the metal can be exposed to air properly. Yes ✅ We clean magnesium ribbon before burn in air, to remove the oxide layer formed over it. |
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| 54637. |
What is the chamical reaction? |
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Answer» The process in which new substance with new property form one or more substance is called chemical reaction During chemical reaction, chemical composition of substance change or new substance are formed . Rearrengement of atoms is called chemical reaction |
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| 54638. |
Phycology mean |
| Answer» Study of algae is called as phycology. | |
| 54639. |
What is the role of duodenum in human digestion |
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Answer» The mamufacturation of the small intestine is done by DUODENUM, JEJUNUM and ILEUM. The chyme is recieved by the duodenum along with several enzymes like Pancreatic Amylase, Trypsin and Lipase from the pancreas and it also the Bile juice from the liver and helps in the absorption of food. Small intestine is made up of three regions namely duodenum, jejunum and ileum. Partially digested food called the chyme from the stomach is received by the duodenum. Duodenum also receives bile form the liver, enzymes from pancreas and secretes some enzymes on its own. |
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| 54640. |
What is the role of the Onam in human digestion |
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| 54641. |
Nytra Modern abc+ books are best for class 10 students and physics of HC verma |
| Answer» | |
| 54642. |
If T is equal to one second then I is equal to what |
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Answer» As you know that rate of flow of electric charge (Q) is called as electric current (I), I=Q/t , therefore when t= 1 second , then electric current (I) = electric charge (Q). Oviously it will be 1 coulomb , We don\'t know answer bro |
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| 54643. |
What critetia do we use to decide whether something is alive. |
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Answer» Movement Visible movement such as walking, breathing, or growing is generally used to decide whether something is alive or not. Sometime, a living organism can have movements that are not visible to the naked eye. Therefore, the presence of life processes is a fundamental criteria that can be used to decide whether something is alive or not. 1 living things can move 2 living things can reproduce3 living things can grow 4 living things can respire5 living things can\'t live without food |
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| 54644. |
1.State the relationship between 1ampere and 1 coulomb |
| Answer» When 1 coulomb of charge flows through any cross-section of a conductor in 1 second, the electric current flowing through it is said to be 1 ampere. That is 1 ampere = 1coulomb/1second. | |
| 54645. |
Why pancreas are called mexcocrine gland |
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Answer» Pancreas are also known as mexocrine gland or mixed gland because it functions as both exocrine and endocrine gland in side the body. Exocrine cells secrets Trypsin, Lipase amd Pancreatic Amylase and the Endocrine cells secrets two hormones termed as Insulin and Glucagon. Pancreas is known as a mixed gland because it performs functions of both exocrine and endocrine glands.It has both exocrine and endocrine cells. Exocrine cells secrete Pancreatic juice and endocrine cells secrete insulin and glucagon. |
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| 54646. |
Which law of motion defines the force |
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Answer» Newton’s first law of motion defines force as the external effect which can change the state of motion or steady state of a body.Newton\'s first law of motion gives us a definition of force. It says thatForce is something that changes or tends to change the state of rest or uniform motion of a body . Second law of motion defines the force[F=m×a] First law of motion |
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| 54647. |
How electron create current |
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Answer» Electron are smaller unit of atom and they help to passes a current in wire Pata nahi |
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| 54648. |
What is magnet and what is work |
| Answer» Magnet: (i) is an object that attracts objects made of iron, cobalt & nickel. (ii) Comes to rest in North-South direction, when suspended freely. | |
| 54649. |
Which part of the world has the largest crude oil Reserves |
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Answer» सऊदी अरबिया With 300,878 million barrels of proven reserves, Venezuela has the largest amount of proven oil reserves in the world. The country\'s oil is a relatively new discovery. Previously, Saudi Arabia had always held the number one position. |
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| 54650. |
What is definition of science |
| Answer» Science is the\xa0knowledge about or study of the natural world based on facts learned through experiments and observation. | |