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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.
| 55151. |
Why Gregor Mendel used pea plant in his experiment |
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Answer» Gregor mendel chose plant in his experiment due to following reasons:1. Pea plants had a number of clear cut differences which were easy to tell apart.2. They were self pollinating.3. They can be produced in a comparatively short time span and their study is much simpler that of animals. No the above answer is wrong. Because that plant was easy to grow ,fast growing plant & easy available & also many other benefits |
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| 55152. |
How does carbon attain noble gas canfiguration |
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Answer» By sharing electrons to form covalent bonds. By sharing of four electrons Carbon has 4 electrons in its outer most orbits and in order to attain the noble gas configuration it should either lose or gain 4 electrons. Being a tetra valet its property is to gain or lose 4 electrons to be stable as noble gases. By forming covalent bonds/sharing electrons |
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| 55153. |
Why isn\'t methene or methyne possible? |
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Answer» Single carbon atom cannot done the double bonds Beacause it is not possible for alkene and alkyle group to cope up with single carbon atom |
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| 55154. |
Why does ethanol behave both as an acid and a base? |
| Answer» Ethanol has a very low pKa value as 16 and it has pH nearly 7 so, it may be considered as neutral, but due to presence of an acidic H-atom, it acts as little acidic and sometimes with strong bases like NaOH,So, it is broadly considered as little acidic.However, better to say it as an amphoteric compound which behaves as acid in strong base medium and as base in strong acid medium.Ex: CH3CH2-OH + NaOH (strong base) -> CH3CH2-ONa + H2O (acidic behavior)CH3CH2-OH + HCl (strong acid) -> CH3CH2-Cl +\xa0H2O (basic behavior) | |
| 55155. |
Ask some question about iupac nomenclature |
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| 55156. |
How are water and minerals transported in plants |
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Answer» Water and Minerals are transported by xylem tissue and food is transported by phloem tissue in a plant Minerals are transported by Phloem tissue and water is transported by Xylem tissue. By conducting tissues, Xylem and Phloem |
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| 55157. |
What is themite reaction |
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Answer» Thanx The reaction of metal ore with aluminum to obtain metal is called thermite reaction.It is called so because so much so the heat is released as the metal is obtained in molten state.For example : Fe2O3 (s) + Al (s)->Al2O3 (s) + Fe (l) |
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| 55158. |
Describe sign convention |
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Answer» Dfhh Hdhdhdhs |
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| 55159. |
Define -mirror formula |
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Answer» It is...1/f = 1/u + 1/v 1/v+1/u=1/f It is defined as 1/ f=1/v+1/u |
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| 55160. |
Give the electron dot structure of CO2 |
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| 55161. |
Explain the cause for dispersion of light?? |
| Answer» Light is made-up of different colours. Each colour travels at its own speed inside a prism.Due to this different colours of light bend through different angles with respect to the incident ray, as they pass through a prism. The red light bends the least while the violet the most. Thus, the rays of each colour emerge along different paths and thus - become distinct. It is the band of distinct colours that we see in a spectrum. | |
| 55162. |
Name the common nutrient that is absorbed by small intestine and reabsorbed in kidney tubules |
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Answer» Glucose, amino acids Glucose |
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| 55163. |
Give the harmful effects of drinking alcohol |
| Answer» Cerebrum was effected | |
| 55164. |
What are the thre important features of civil right movement of the U. S. A during 1954 |
| Answer» 1. It was a social reform movement which aimed to abolish racial discrimination in the USA against African-American2. It was led by Martin Luther King and started in 1954 and slowed down in 19683. It practiced non-violent methods to abolish racial discrimination | |
| 55165. |
What is the focal length of plane mirror |
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Answer» Ya it\'s infinite Infinite |
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| 55166. |
What is difference btw metallic and non metallic characters |
| Answer» Metals are malleable and ductile and non metals are non malleable and non ductile, metals are electropositive in Nature and non metals are electronegative in nature | |
| 55167. |
How to draw structure of cyclopentane |
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Answer» /C-----C \\ C C C-----c/ C / \\ C c | | C------c https://goo.gl/images/s3fq6X |
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| 55168. |
Group of nerve cells |
| Answer» Nerve cells are also known as neurons. These are the primary building blocks of the nervous system in humans and animals. Its main function is transmitting and receiving electrochemical messages. They help in the transmission of sensory information to the central nervous system and the regulation and control of organs in the body.A typical neuron consists of a cell body, dendrites, and an axon.The cell body contains the necessary structures for keeping the neuron functional. That includes the nucleus, mitochondria, and other organelles.Dendrites are thin structures that arise from the cell body, often extending and have many branches, giving rise to a complex "dendritic tree".An axon is a special cellular extension that arises from the cell body and travels for a distance, as far as 1 meter in humans or even more in other species. | |
| 55169. |
Explain Gragormendal law |
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| 55170. |
Mention 5 points in support to evolution in man |
| Answer» When there is a change in the heritable characteristics of the progenies over a successive generation, it is known as Evolution.Jean Baptiste Lamarck was the first person to give the theory of evolution. Thereafter this concept was made popular by Charles Robert Darwin in his famous book “The origin of species”. This theory that was made popular by his is known as the theory of natural selection or Darwinism.He states that evolution takes place through the process of natural selection. He states that traits may vary with respect to the phenotype variation. The traits differentiation is what determines the rate of survival. This trait of fitness and survival is heredity. This process on the basis of which changes occur and that which is passed from generation to generation is called the evolutionary process. | |
| 55171. |
Define 1dioptre of power of the lens |
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Answer» 1 deoptre Power of lens whose focal length is 1m When focal length of a lens is 1 the power of lens is called 1 diopter When the focal length of a lens is 1 m then the power of lens is called 1 dioptre. |
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| 55172. |
3 fusesof rating 3A,5A and 7A available which 1 of them will be most suitable to rate of 1KW at 220w |
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Answer» 5A 5A |
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| 55173. |
Explain the function of heart. |
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Answer» In human body heart acts as a pump to regulate blood throughout the body and also help to separate blood which is oxygenated and deoxygenated What do you mean book ni hai tere pass. You have no manner how to interact by the people Thanx yll The heart is a pump, which moves the blood. The arteries and veins are the pipes through which the blood flows. The lungs provide a place to exchange carbon dioxide for oxygen. The heart is a hollow, muscular organ, which functions as a pump for the movement of blood through the body. Book nahi hai kya tera pass |
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| 55174. |
What is the defination for carboxilic acids? |
| Answer» Carboxylic acid is a type of organic compound that widely occurs in forms of acetic acids and amino acids and is the main ingredient in vinegar.It is usually linked with extra functional groups.A typical carboxylic acid has around 10 carbon atoms and low melting point. | |
| 55175. |
What is a voltmeter |
| Answer» Instrument which is used to measure potential difference in an electric circuit is calles voltmeter | |
| 55176. |
How geographical isolation help in evolution? |
| Answer» Geographical isolation is the isolation of population by physical barriers such as stretches of water or mountain ranges.There is a population of red beetles living in a mountain area covered with green bushes. Various sub-population in the large-population exists in the neighbourhood. Individuals of a sub-population reproduce sexually among themselves and numerous variations accumulate in these sub-populations of red beetles.There may be some reproduction among these sub-populations. If a beetle from one sub-population strays into other’s area and some individuals from one sub-population may be carried by predators to the area of other sub-population, then random reproduction takes place. It may lead to migration of genes from one sub-population to other.If the sub-populations are isolated due to the presence of river between them:(i) Variation will accumulate in isolated sub-population.(ii) Over a period of generation, the sub-populations would get very different from each other due to the processes of genetic drift and natural selection and they will not be able to reproduce themselves. | |
| 55177. |
an ammeter has 40 divisions between 0 and 5 marks on its scale . find least count |
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| 55178. |
What is atiomic number |
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Answer» Atomic no. is the no. of protons present in an element. It is the unique and fundamental property of each element. Atomic number is the number of element in periodic table Atomic or atiomic |
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| 55179. |
Which Diagram is most important in Bio ? |
| Answer» All are important in bio because you not make a Q paper. So all are important | |
| 55180. |
Explain spore formation in bread mould |
| Answer» Spore formation in Bread Mould is a method of asexual reproduction. It is also known as Sporogenesis. It is one of the common methods of asexual reproduction in fungi and bacteria. The thread-like structures that developed on the bread are the hyphae of the bread mould (RHIZOPUS) | |
| 55181. |
What is carbon credits |
| Answer» A carbon credit is a\xa0permit\xa0or certificate allowing the holder to emit carbon dioxide or other greenhouse gases. The credit\xa0limits the emission to a mass equal to one ton of carbon dioxide. The issuance of carbon credits aims to reduce the emission of greenhouse gases into the atmosphere. | |
| 55182. |
1. How do carbohydrates, Proteins & fats get digested in human beings? |
| Answer» Digestion of carbohydrates: Starch is digested in the mouth by salivary amylase. Other forms of carbohydrates are digested in the small intestine.Starch + Salivary Amylase → SucroseMaltose + Maltase → GlucoseLactose + Lactase → Glucose + GalactoseDigestion of Proteins: Partial digestion of protein takes place in the stomach by gastric enzyme pepsin. Further digestion of protein happens in the small intestine.Protein + Pepsin → Peptone + Proteose(Protein + Peptone + Proteose) + (trypsin + chymotrypsin) → DipeptidesDigestion of Fat: Fat is at first emulsified by bile and then its digestion happens in the small intestine.Fat + Lipase → Fatty acids + Glycerol | |
| 55183. |
What is sponification reaction |
| Answer» It is a reaction in which the fatty acid reacts with NaOH to form soap and glycerol in presence of salt. | |
| 55184. |
Why do danger signals are red in colour? |
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Answer» Because red colours have high wavelength and they scatter less in the atmosphere Danger signals are because red colour have high wavelength and least scattering power as it is not scattered in the atmosphere so we observe red colour distantly si danger signal are red. When the light passes through atmosphere, it gets scattered by small air particles. The scattering of light is inversely proportional to the fourth power of its wavelength. As the red light has the highest wavelength among all the colours, so it is scattered the least. Due to which most of the light gets reflected back and can travel longer distances through rain, fog, dust etc. to reach our eyes effectively. |
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| 55185. |
What is the formula of clorohexane |
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Answer» C6H13cl CH3-CH2-CH2-CH2-CH2-CH2-Cl, C6H13Cl C6H14 cl |
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| 55186. |
Explain the role of artificial kidney in the human body |
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Answer» Artificial kindey consists of a number of tubes with semi- permeable lining ( selective permeable membrane). These tubes are suspended in a tank filled with dialysing fluid. This dialysing fluid has the same osmotic pressure as a blood. This fluid does not contain nitrogenous wastes. Artificial kidney actual role of kidney in human body . The actual kidney falled so doctors place artificial kidneys in human body. |
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| 55187. |
Bhai yh v ka gyan smj hi nhi aata |
| Answer» Ayega agar dhayan se samjhoge tho. | |
| 55188. |
Explain breathing of fish and also show the diagram |
| Answer» \tThe fish has special organs for breathing called ‘gills’. The fish has gills on both the sides of its head.\tThe fish lives in water and this water contains dissolves oxygen in it. The fish breathes by taking in water through its mouth and sending it over the gills.\tWhen water passes over gills, the gills extract dissolved oxygen from this water. The water then goes out through the gill slits.\tThe extracted oxygen is absorbed by the blood and carried to all the parts of the fish. The carbon dioxide produced by the respiration is brought back by the blood into the gills for expelling into the surrounding water. | |
| 55189. |
Homologous series |
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Answer» The series of organic compound in which the compound belongs to same family, the adjacent compounds are differ by one carbon and two hydrogen atoms with molar mass 14u and they have same physical properties and different chemical properties \tA series of carbon compounds in which same functional group substitutes the hydrogen atom is called a homologous series.\tThese compounds have similar chemical properties due to the addition of same kind of functional group throughout the chain.\tFor example, the series of alkanes i.e. Methane, ethane, propane, butane and so on is a homologous series. What is this Anup kumar ? Ueeisoshajxkxjzkajsjdpsjdjjdldbskdlldbskflsld |
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| 55190. |
composition of biogas |
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Answer» Biogas is made up of Methane carbon dioxide hydrogen hydrogen sulphide and the main constituent is methane 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. |
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| 55191. |
Is methanol is a iupac name of ch3oh |
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Answer» Yes. Yes ch3oh |
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| 55192. |
Diffentiate between autotrophic nutrition and heterotrapic nutrition. |
| Answer» \tAUTOTROPHIC NUTRITIONHETEROTROPHIC NUTRITION1) it means that the organism prepare its own food and is not dependent on any other organism.1) it means that the organism does not prepare its own food and dependent on other organism for food.2) food is prepared from co2 ,water,sunlight.2) food cannot be prepared from co2 ,water,sunlight.3) green plants and certain bacteria have autotrophic mode of nutrition.3) all the animals and fungi,most bacteria have heterotrophic mode of nutrition.\xa0\t | |
| 55193. |
aavantage of solar cooker |
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Answer» Several advantages of solar cooker first of all it is a renewable resource it is also called one time investment saves a lot of resources like electricity and also use the energy which is not in used like sunlight Advantages of Solar Cookers:\t\xa0As we can maintain better air quality indoors and reduce the amount of carbon monoxide emissions, Solar cookers are eco-friendly.\tWe can reduce the dependence on electricity, and cooking gas by using solar cookers.\tSolar cooking is one time investment after its installation it is free to use.\tSolar cooking can save a significant amount of money over the long term.\t\xa0The quality of solar cooking is notable. Solar cooking does not burn food and change the flavour. |
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| 55194. |
Why are fossils consider as important in studying of evolution |
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Answer» Fossils provide evidence in favour of evolution or establish evolutionary relationships by providing missing links. So,\xa0it is considered important in the study of evolution.The age of the fossils can be determined by the following way:1) Radiometric dating: In this method, the age of the fossil\xa0can be determined by tracing the radioactive elements present in the rocks and examining it chemically.2) Relative dating:\xa0 The fossils are found in the sedimentary rocks in the form of layers accumulated over the large span of time. So, using this fact, the geologist find the age of fossils in the way that the fossil found at the bottom of those layers are found to be older than that found above those. And also tell about evolution They give an idea of an structure of organosm present in pre historic time and information about enviromental condition of that time |
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| 55195. |
Explain heating of lead nitrate and emissions of nitrogen dioxide |
| Answer» When lead nitrate is heated in air, it decomposes to give lead oxide, nitrogen dioxide and oxygen.2Pb(NO3)2 → 2PbO + 4NO2 + O2NO2 is liberated, along with oxygen, as a reddish brown gas. The residue left is lead monoxide. | |
| 55196. |
What happened when we use two condom in the intercourse or reproduction |
| Answer» They not allow the sperms to Fuse the ovum | |
| 55197. |
Which non metal is used for hardness of tyer?????? |
| Answer» Sulphur | |
| 55198. |
Why are molecular movement heeded for life? |
| Answer» Molecular movements are required to provide various essential molecules throughout the body of an organism for repairing and maintaining their structure. Life processes are needed to maintain functions of living organisms. | |
| 55199. |
How can we measure atmospheric pressure? |
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Answer» A barometer is a scientific instrument used in meteorology to measure atmospheric pressure. A simple barometer consists of a long glass tube (closed at one end, open at the other) filled with mercury and turned upside down into a container of mercury. The barometer works by balancing the mercury in the glass tube against the outside air pressure, just like a set of scales. As air pressure increases—that is, as the air becomes heavier—it pushes more of the mercury up into the tube. As air pressure decreases, more of the mercury drains from the tube. So the level of mercury in the tube provides a precise measure of air pressure. Mercury barometer or an aneroid barometer in place of mercury barometer. It is easier to move and is often easier to read |
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| 55200. |
What are the structure isomers of the pentane. |
| Answer» Isomers of pentane are Iso pentane, n pentane,neo pentane | |