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InterviewSolution
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.
| 65101. |
What is the molecular formula of acetic acid? |
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Answer» CH3COOH Acetic acid in also know an ethanoic acid.CH3COOH CH3COOH (ethanoic acid) CH3COOH |
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| 65102. |
Principle of reversibility of light |
| Answer» \xa0The principle that if a beam of light is reflected back on itself, it will traverse the same path or paths as it did before reversal.The principle of reversibility states that light will follow exactly the same path if its direction of travel is reversed.\xa0 | |
| 65103. |
What is a basisity? |
| Answer» The number of ionizable hydrogen (H+) ions present in one molecule of an acid is called its basicityFor example:HCl (aq) ↔\xa0H+\xa0+ Cl-\xa0Basicity of HCl is 1H2SO4(aq)\xa0↔\xa02H+\xa0+ HSO4-Basicity of H2SO4 is 2 | |
| 65104. |
i am a kvs student |
| Answer» | |
| 65105. |
which fat is not harmful for Cholesterol person |
| Answer» i am a kvs student | |
| 65106. |
Why angle of incidence ray is always equal to reflected ray |
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Answer» It is alway eqal because it is divided by normal Well on case of convex and convcave mirror it is also equ No,it alway be equal in only plane mirror. , |
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| 65107. |
A example of soap |
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Answer» Calcium Calcium Calcium and magnesium Calcium |
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| 65108. |
Pouring dry sand over the fire extinguishes it explain why |
| Answer» Because it unable oxygen to reach | |
| 65109. |
Adavantage of dna copying |
| Answer» Variations is one of the advantage of dna copying because it is neccesary of survival ......... | |
| 65110. |
What is function of ***** |
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Answer» what function Multiply ***** |
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| 65111. |
Expalin dynamo |
| Answer» It convert Machenical energy to electrical energy. | |
| 65112. |
What is isotope s |
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Answer» The element having same atomic number but different mass is known as Isotopes. The atoms of same element in which atomic number are same but,, different in mass are called isotope..)))): Same atomic no. but different mass no. Elements which have same atomic number but different atomic mass number is considered as isotopes. |
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| 65113. |
Two Functions of testosterone |
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Answer» It produce male hormones and also produce sperm. Testosterone is an male hormone Its functions are They are must for production of sperm and male ***. |
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| 65114. |
When zn granuels react with hcl |
| Answer» When zn react with hcl produce zinc chloride and evolve h2 gas | |
| 65115. |
Why is abscisic acid called as a stress harmone ? |
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Answer» It is plant growth inhabitor . It gives us stress |
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| 65116. |
why is ethanol is used to make of cough syrup tonic extra |
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Answer» Because small amount of alcohol can be used as medicine but the excess causes health problem so little amount of alcohol is used with syrups. Ethanol is used to make cough syrup because it is the second member of homologous series and it is filled with proteins and vitamins which are good for our health but in a limited amount |
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| 65117. |
On what factor do the resistance of a conductor depend |
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Answer» It depends on- Area of cross section of conductor,length of conductor,material of conductor and temperature. Length,area&temperature THE RESISTANCE DEPENDS ON THE FOLLOWING FACTORS :* length - resistance is directly proportional to length of an object *area - inversely proportional to its area * temperature *material of an object |
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| 65118. |
Explain the working and principle generator with neat 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. | |
| 65119. |
Define esterification with chemical equation |
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Answer» It is a sweet smelling substance which is prepared form carboxilic acid and alcohol in the presence of an acid.It\'s reaction is CH3COOH + C2H5OH in presence of an acid gives-------------> CH3COOC2H5.(this is an ester) Esterification. It is the process of forming esters with the help of carboxylic acids and alcohol. Chemical reaction.... CH3COOH + CH3CH2OH----------> CH3COOC2H3(ETHANOIC ACID) + (ETHANOL) ------>(ESTER) |
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| 65120. |
What is centre of curvature |
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Answer» It is the center of the sphere from which mirror has been cut. It is the centre of that sphere of whuch our mirror (convex or concave) is part of |
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| 65121. |
What is phytochrome? |
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Answer» Phytochome is a blue-green colour pigment found in many plants which regulates the developmental processes. Phytochrome :- Its an plant hormon. |
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| 65122. |
When cell divides electrons are also divides ? |
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Answer» yes its right Yes |
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| 65123. |
What is hydragenation |
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Answer» It is the process of converting unsaturated hydrocarbon into saturated hydrocarbon by adding hydrogen to it in the presence of Nickel as catalyst. The process of hydrogen gas react with unsaturated compound and formed with saturated compound it is know as hydrogenation. The process of converting saturated into unsaturated compound known as hydragenation |
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| 65124. |
Name the any two element which flote in water. |
| Answer» Ca and Mg | |
| 65125. |
When heated strongly, quick lime emits |
| Answer» | |
| 65126. |
What is wabe theory of light? |
| Answer» The wave theory of light was the way we first understood light. The theory was spread most significantly by Robert Hooke and Christiaan Huygens in the 17th century.They predicted that if light was a wave, we would see certain things. We would see that light could reflect off shiny surfaces, refract (or bend) when moving from one material into another, and diffract (or spread) around objects or when moving through slits. It should also be possible to see interference, where peaks or troughs of waves add up to create brighter light, and peaks and troughs cancel out to create darker areas. | |
| 65127. |
The blood group is represented by alphabet ? |
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Answer» A,B,AB,O A,B,AB,O A,b,ab,o |
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| 65128. |
What is emulsified food????? |
| Answer» You can check it on google It is present there I have recently checked it | |
| 65129. |
What is a contraceptive method and these examples |
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Answer» Contraceptive method is a method which avoid unwanted pregnancy and also to avoid (STD)sexual transmitted deases In contraceptive method many types of method involved 1.barrier method (physical method) 2.surgical method Etc. Contraceptive method is a good method for barrier to pragnency. It is type of IUCD devices copper T.copper T is a device transplant in uterus of women to prevent pregnancy. |
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| 65130. |
Why we breath only oxygen instead of other gases like carbondioxide and carbon monoxide etc |
| Answer» You wrong all gases are breathing in our body ,carbon dioxide are also breath .Cabon monoxide are poisenous gases it form in burning of decay fossil fuel. | |
| 65131. |
Why hellium is only filled in ballons |
| Answer» Helium is only filled in ballons because it is a light gas (means having low mass). It fills in the ballons to fly easily.If in ballons heavy gas (means whose mass is high than hellium) is filled it cannot fly easily than those balloons in which hellium is filled. | |
| 65132. |
Why does carbon not form tetra bonds? |
| Answer» Because carbon make a compound to add an another carbon to make a new compound | |
| 65133. |
What is genetic drift? Complete explanation. |
| Answer» It is a mechanism of evolution in which frequency of genes in a small population changes over generations due to chance. | |
| 65134. |
What is the law of independent assortment ? Easy explanation plz.. |
| Answer» According to this law different genes independly seperate from one another when reproductive cells develop. | |
| 65135. |
Why nephron is called filtering unit of kidney? |
| Answer» Because it remove the weste product blood and form urine. | |
| 65136. |
What is germ cells |
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Answer» Germ cell is a type of cell which takes part in sexual reproduction for forming the zygote. Germ cell (also known as gamete) is a cell that contain half the number of chromosomes of a somatic cell means it is haploid (n) and able to unite with one from the opposite *** to form a new individual. |
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| 65137. |
Mendal first law..... |
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Answer» I think its law of dominance Law of segregation |
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| 65138. |
A typhist typing the the text very fast without looking at keyboarb.how hevis able to do this |
| Answer» | |
| 65139. |
Ch 7 cbse level question and answer |
| Answer» | |
| 65140. |
Iupac name of neopentane |
| Answer» 2-2 Dimethlpropane | |
| 65141. |
What is the chemical formula of lead nitrate ? |
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Answer» Preeti ji you are right but you should answer the given question . Pb(NO3)2+KI arrow pbI2+KNO3 Pb(NO3)2 |
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| 65142. |
Why it is necessary to balance a skeletal chemical equation ? |
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Answer» Because law of conservation of mass states that matter is neither creted nor destroyed Total no.of element present in rectant is equal to product.hence it can be conserved Due to law of conservation of massNo of atoms of each element should be equal on both side It is necessary to balance a skelton chemical reaction b |
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| 65143. |
Why it is advised to clean magnesium ribbon before burning? |
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Answer» It is advised because when magnesium kept in atmosphere then there would be layer of magnesium oxide which prevent it from burning so due to this we are advised to clean the magnesium ribbon before burnning it In order to remove the white layer of magnesium oxide from its surface which hinders burning of magnesium It is advice to clean mg ribbon before burning because mg react with oxygen and form magnesium oxide.To remove it we should clean it first |
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| 65144. |
What happens when magnesium ribbon is burnt in air ? |
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Answer» When it burns in air it forms magnesium oxide When mg ribbon burn with oxygen it forms mgo |
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| 65145. |
What are the characterstics of a chemical change ? |
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Answer» Characterstics of chemical change are1.it is irreversible2.change in colour3.change in state4.change in temperature.5.evoulation of gas Characterstics are :Change in colour Change in taste Change in stateEvolution of gas |
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| 65146. |
What is chemical change ? Give some examples |
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Answer» Examples are digestion of food, making of curd etc. The changes in which new substances are formed with new different properties are called chemical changes. |
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| 65147. |
What is physical change ? |
| Answer» The reversible change is known as the physical change | |
| 65148. |
How magnesium ribbon burn ? |
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Answer» Magnesium ribbon with dazzling white light With a white flame |
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| 65149. |
Why are crop fields known as artificial ecosystem |
| Answer» An agricultural field is considered to be an artificial ecosystem due to following reasons.\tIt is man made ecosystem hence considered as artificial ecosystem.\tIt has all the components of the ecosystem. Abiotic fctors include air, water, soil etc. Biotic factors include all the living organisms like plants, animals and microbes.\tIt comprises various phenomena such as flow of energy, food chains, food webs etc.\tFor example, an agriculturist cultivating rice can culture the fish as well in the same farm. Water is made to stand in the rice field which allows the growth of planktons. Fish feed on these planktons. Fish are fed by cranes. Cranes are fed by snakes.Planktons\xa0→ Fish → Cranes\xa0→ Snakes | |
| 65150. |
What is prism? And what are its functions |
| Answer» Prism is a 3 dimenstional figure . It is used for the refraction of light . Prim bends the light towards the normal entering from a rarer to denser medium .....Hope it helps u ? | |