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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.
| 53951. |
How to HCL not effect in our stomach |
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Answer» its diluted hcl Bcoz of presence of mucus HCL being an acid it doesn\'t affect our stomach bcuz there is a lining of mucus present in our stomach which protect it |
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| 53952. |
What is resisrivity |
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Answer» Resistivity is the property of a conductor or insulator or may be Anything to oppose or resist the flow of charge through it. Usually conductors have low resistivity in the comparison of insulators and alloys. The resistivity of a material is defined in terms of the magnitude of the electric field across it that gives a certain current density. Resistivity comes from a word resistance if 1m length and 1m square area of a conducting wire then resistance is equal to resistivity. |
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| 53953. |
write the relaationship r between f or proof r=2f |
| Answer» The distance between P and C equal to the 2f ...... the distance between F and P is 2 time of R | |
| 53954. |
What is precipitate? |
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Answer» When a chemical reaction take place and the products are form in two states then one solid substance is produced from the reaction of two aqeous solutions. The solid substance formed is known as precipitate Cause(an event or situation typically one that is undesirable )to happen suddenly,unexpectedly or prematurely..? Hello |
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| 53955. |
Define guttain |
| Answer» | |
| 53956. |
Which is the most highly reactive metal ? |
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Answer» iron Potassium and sodium both are very reactive metal Yes potassium rught answer Sodium Yes,it is potassium Yes potassium Iron Potassium is the most highly reactive metal according to reactive series. |
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| 53957. |
Voltmeter always connected in parallel |
| Answer» Yes , because it has high resistance and if it is connected in series , then due to it\'s high resistance it will oppose the flow of electric current due to which a cell or a battery will discharge soon. | |
| 53958. |
Why volt meter connected inparallel |
| Answer» The internal resistance of the volt meter is very high and it is used to measure the potential difference between the two points. If we connect it in series, then there is no flow of current in the circuit because of high resistance. And no use of connecting it in series because the potential difference between two points on the same line is zero. | |
| 53959. |
Explain the amphoteric nature of metal oxide with example (chemical equation )? |
| Answer» Oxides of metals which have both acidic as well as basic behavior are known as amphoteric oxides. Such metallic oxides react with acids as well as base to produce salt and water. Examples of Amphoteric oxides are aluminium oxide and zinc oxide. | |
| 53960. |
What is redox? |
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Answer» A chemical reaction in which both oxidation and reduction takes place simultaneously is called redox. Red=reduction + ox= oxidation Reaction in which reduction and oxidation both takes place is called redox reaction . |
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| 53961. |
Why Water don\'t catch fire? |
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Answer» Because it is not a combustible substance. It is a compound of Oxygen and Hydrogen not the element. So it does not catches fire. Because it containd hydrogen |
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| 53962. |
A can which is filled by Pepsi can be crushed by hand or if it\'s crushed so what force will be done |
| Answer» | |
| 53963. |
Write down the electric configuration of first 3 elements of group |
| Answer» Hydrogen -1Helium-2Lithium-2,1 | |
| 53964. |
State Fleming\'s right hand rule?? |
| Answer» According to flemings right hand rule ,strech your forefinger, middle finger ,and thumb such that they are mutually perpendicular to each other then the thumb along the direction of motion forefinger along magnetic field and thumb along electric current | |
| 53965. |
enzyme secreted by salivary glands?? |
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Answer» sumit rao starch get converted into sugar (maltose) ? Salivary amylase .it breakdown sugar into starch Saliva But I\'M not sure I think that enzyme is salivary amylase |
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| 53966. |
Where did the ray band in refraction when it comes perpendicular like normal |
| Answer» The ray does not bend if ray come perpendicular like normal because angle of incident is 0° then angle of refraction is always 0°So ,the ray doesn\'t bend | |
| 53967. |
Explain rancity? |
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Answer» Oxidation of fat and oil containing food remarked with an unpleasent smell is called Rancidity It is defined as chemical decomposition of oils and fats is called rancidity. It spoils food materials that makes difficult for consumption.It can be prevented by following methods:(i) The packing of food materials should be replaced the air with Nitrogen.(ii) The food materials should be placed at very low temperatures.(iii) Addition of antioxidants also prevents rancidity process. |
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| 53968. |
What are bio catalyst |
| Answer» MnO2 | |
| 53969. |
Ecercise questions |
| Answer» | |
| 53970. |
What is the common molecular formula of compound formed between alkali metals with halogens |
| Answer» Alkali metals react vigorously with halogens to form ionic metal halides of the general Formula , MX where M stands for metal and X for the halogens.2 M + X2 ———> 2 MXThe reactivity of alkali metal towards a particular halogen increases as we move down the group from Li to Cs due to a decrease in the ionization enthalpy or increase in the electropositive character of the metal. Potassium reacts with chlorine more vigorously than sodium.Reactivity of halogens towards a particular alkali metal decreases from F2 to I2 i.e.F2 > Cl2 > Br2 > I2. | |
| 53971. |
What is precipitationreactiin |
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Answer» The chemical reaction in which a white coloured substance which is insoluble in water (precipitate) is formed then it is known as precipitation reaction:Na2SO4(aq) + BaCl2(aq) → BaSO4(s) + 2Nacl(aq)In this reaction Barium sulphate is a white colour precipitate and it is insoluble in water. Precipitation reactions occur when cations and anions in aqueous solution combine to form an insoluble ionic solid called a precipitate. Whether or not such a reaction occurs can be determined by using the solubility rules for common ionic solids.For example, sometimes the pipes in our homes get clogged because precipitates of magnesium and calcium oxides have deposited themselves within the pipes. |
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| 53972. |
Which type of reaction is photosynthesis |
| Answer» However, there is one synthesis reaction which is endothermic, which is photosynthesis. This is a type of photochemical reaction. Carbon dioxide and water react to form glucose in the presence of sunlight and chlorophyll. | |
| 53973. |
What is aerobic |
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Answer» If you like then comment Aerobic respiration is the process of producing cellular energy involving oxygen. Cells break down food in the mitochondria in a long, multistep process that produces roughly 36 ATP. The first step in is glycolysis, the second is the citric acid cycle and the third is the electron transport system |
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| 53974. |
What we call the enzyme present in saliva |
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Answer» Salivary Amylase Salivaty emylase |
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| 53975. |
What is the refractive index of air |
| Answer» Refractive index is a measure of how much speed of light changes when it enter the medium from air. Absolute refractive index is the ratio of speed of light in vacuum or air to speed of light in the medium.Refractive index of air is 1.0003. | |
| 53976. |
what is anarobic |
| Answer» absence of oxygen | |
| 53977. |
Why does current flow opposite to electron |
| Answer» The electric current is the flow of positive charges but by the convention it is said that the current would be in the direction opposite to the flow of electrons as they have negative charge associated with it. And if you see in semiconductors or diodes the flow of current is also due to the flow of holes with the flow of electrons in opposite direct. | |
| 53978. |
Which is the largest artery in human beings |
| Answer» Arota is the largest artery in our body | |
| 53979. |
Define respiration in very short |
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Answer» The process of breaking of glucose of our cells in presence of oxygen It is the process of breaking down glucose molecule into simpler form |
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| 53980. |
What determins the rate at which energy is delivered by a current ? |
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Answer» Power Electric power |
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| 53981. |
Which physical quantity is represented by the unit watt-second ? |
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Answer» Power Power |
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| 53982. |
What is neutralization? |
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Answer» Reaction between the acids and bases to form water and salt is called nutrilization When the acid and Bases reacted each other and formed salt and H2O is called nutrilization process |
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| 53983. |
What are the examples of holozoic nutrition |
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Answer» Humans, animals like dog etc Ameoba Humans, all animals, ameoba Clash of clans |
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| 53984. |
Why should a magnesium ribbon be cleaned before it is burnt in air |
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Answer» Because it reacts with CO2 in atmosphere To remove the layer of oxide from it so that it can easily burn by reacting with oxygen. |
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| 53985. |
Difference between charge and current |
| Answer» Charge refers to a fundamental property of a particle while current refers to the rate of flow of charge | |
| 53986. |
why the dentition in human being are diphodyent and heterodent dentition |
| Answer» Heterodont : It is the condition of having different types of teeth. For example humans have four different types of teeth namely incisors, canines, molars and premolars.Diphyodont : The type of dentition characterised by two sets of teeth. First set is of temporary and second is of permanent. | |
| 53987. |
Define cathode, anode and electrode |
| Answer» Cathode is negative pole during electrolysisAnode is positive polee during electrolysisBoth cathode and anode comes under electrode | |
| 53988. |
why the dentition in human beings are diphodyent and heterodent dentation |
| Answer» Heterodont : It is the condition of having different types of teeth. For example humans have four different types of teeth namely incisors, canines, molars and premolars.Diphyodont : The type of dentition characterised by two sets of teeth. First set is of temporary and second is of permanent. | |
| 53989. |
Why is it necessary to separate oxygenated and deoxygenated blood in mammals and birds ?? |
| Answer» So that they may survive as deoxygenated blood harms cells of our body | |
| 53990. |
How a thread of rayon is formed |
| Answer» Rayon is a man-made fiber prepared from a natural raw material called cellulose by chemical treatment. The cellulose required for making rayon is obtained from wood pulp. Rayon is obtained by the chemical treatment of wood pulp.1)Wood pulp is dissolved in an alkaline solution to form sticky liquid called viscose.2)Viscose is forced to pass through the tiny holes of metal cylinder into a solution of sulphuric acid when a silk like thread of rayon is formed.Rayon is made from naturally occurring polymer present in wood pulp, therefore rayon is neither a fully synthetic nor a fully natural fiber. It is a semi-synthetic fiber. | |
| 53991. |
Why gaurd cell swells up and shrinks |
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Answer» Tue to change in turger pressure Due to water vapour When guard cell lost water it shrink |
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| 53992. |
How we can do balancing in easy way |
| Answer» Ncert has given it the easiest method | |
| 53993. |
What is oxidation...? Answer in new words... |
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Answer» Three define for oxidation 1the addition of oxygen and removal of hydrogen 2 those reactions in which number of oxygen increases. 3 the combination of electron is called oxidation and releasing electron called reduction . These three define mch easier to understand whose reaction is oxidation. Hey. It can be that the process of loss of electrons Is known as oxidation The process of the addition of oxygen and removal of hydrogen |
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| 53994. |
Difference between transporta |
| Answer» Please ask question with complete information. | |
| 53995. |
Difference between transportation and transporting system |
| Answer» • Transportation means the process of transporting things from one place to anotherWhereas,•Tranporting system means the organs ,collectively making a surface or path or network to transport things. | |
| 53996. |
Balance the chemical equation. H2S+O2=H2O+SO2 |
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Answer» No problem Lagnesh Chaudary this is the stage of learning thank you for making me correct You are wrong sonal mittal O2 in left hand side become 3O2= O6 and in product H2O WILL BECAME 2H20 WHERE O=2 AND SO2 WILL BECOME 2SO2 WHERW O= 4 AND O2+ O4=O6 AND LEFT SIDE IS EQUAL AND BALANCED.I AM RIGHT YOU ARE WRONG 2H2S+3O2=2H2O+2SO2 2H2S+2O2=2H2O+ 2SO2 |
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| 53997. |
The breakdown of pyruvate to give Co2, H2o and energy takes place in |
| Answer» Mitochondria | |
| 53998. |
Can we adapt ourself without food and water? Answer me yes or no i will give the reasin |
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Answer» Yes because only few people adapt their body without food and water and their body synthesis food naturally and get energy to survive Yes because some people adapt their body Only for a few days I don\'t think soo No |
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| 53999. |
Some equation for balancing |
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Answer» 1) zn+H2so4-_znso4 + H2Karo solve okkk...??????? The process of making the numbers of different types of atom equal on both sideof an eqⁿ |
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| 54000. |
Distinguish the types of reflection |
| Answer» \tReflectionRefraction1. Reflection is described as the reverting back of light or sound waves in the same medium, when it falls on plane.1. Refraction means the shift in direction of the radio waves, when it enters medium with different density.2. Light returns to the same medium.2. Light travels from one medium to another.3.Waves bounce off the plane and changes direction.3. Waves pass through the surface, that changes their speed and direction.4. Angle of incidence equal to the angle of reflection.4. Angle of incidence not equal to the angle of refraction.\t | |