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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.
| 4151. |
What is meant by substitution reactions? |
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Answer» When a higher energy compound displace less energy compound is called displacement reaction.for exampleCuSO4 +Fe - FeSo4+CuBecause iron is note reactive than copper .therefore concentration of copper is decreases and iron sulphate is produce Substitution reaction (also known as single displacement reaction or single substitution reaction) is a reaction in which the functional group of one chemical compound is substituted by another group or it is reaction which involves the replacement of one atom or an molecule of a compound with another atom or molecule. They are of prime importance in organic chemistry.For example: when CH3Cl is reacted with the hydroxyl ion (OH-), it will lead to the formation of the original molecule called as methanol with that hydroxyl ion. The following reaction is as shown below-CH3Cl + (−OH)--->CH3OH( methanol) + Cl- |
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| 4152. |
Give some examples of oxidizing agent |
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Answer» Acidified potassium dichromateBasic potassium permanganete Sorry copper oxide In the following reaction CuO+H2=Cu+H2O Color oxide is the oxidising agent |
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| 4153. |
What is meant by biological magnification |
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Answer» When some harmful pesticides,weedicides,insecticides etc.such as D.D.T( dichloro.diphynyll.triphosphate)added to the food chain and toxic chemicals which effect on other organism and harmful to them as well as help in the decrese population of that organisms is known as biological magnification The increase in concentration of harmful chemical substances like pesticides or insecticides in the body of living organism at each trophic level of a food chain is called Biological magnification |
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| 4154. |
Why star is twinkle but planet are not twinkle |
| Answer» Firstly ,the stars are luminous bodies but planets are not. And twinkling is due to the refraction by the various layers of atm. And minute particles. | |
| 4155. |
Show the bonding of carbon monoxide |
| Answer» | |
| 4156. |
Why we need tidecolorise the leaf today check the presence of strach |
| Answer» Because you check the proper colur | |
| 4157. |
Fission |
| Answer» In fission one heavier nucleus bombarded with low energy neutrons can be split apart into loghter nuclei. | |
| 4158. |
What is fussion? |
| Answer» Fusion means joining lighter nuclei to make a a heavier nucleus | |
| 4159. |
What you mean by traid |
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Answer» TRAID is a charitable work to stop clothes from being thrown away. We turn clothes waste into funds and resources to reduce the environmental and social impacts of our clothes. The selling and buying of goods The selling and buying pr |
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| 4160. |
Name the three tabular glands present in the wall of stomach? |
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Answer» Fundic , pyloric and cardiac are three regions of stomach ,they are not glands.Glands are 1.mucous or goblet gland 2.oxyentic or perital 3. Peptic gland. The three tubular glands are = fundic glands, pyloric glands and cardiac glands |
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| 4161. |
Hypermetropia (long-term sightedness or far -sightedness ) |
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Answer» Short sightedness HYPERMETROPIA-- It is a defect of visio in which a person can not see nearby object clearly but can see far away object clearly.It can be corrected by using spectacles having convex lens. |
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| 4162. |
Why mirrors can not show refraction ? |
| Answer» They only reflect . No change in densityMy | |
| 4163. |
Difference between AC-DC |
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Answer» \t\xa0AC can carry and safe to transfer longer distance even between two cities, and maintain the electric power. DC cannot travel for very longer distance. If does, it loses electric power.\tIn AC.the rotating magnets causes the change in direction of electric flow. The steady magnetism makes the DC to flow in a single direction.\tThe frequency of AC is depended upon the country. But, generally the frequency is 50Hz or 60Hz. DC has no frequency of zero frequency.\tIn AC the flow of current changes it direction backwards periodically. DC flows in single direction steadily.\tElectrons in AC keep changing its directions - backward and forward. Electrons only move in one direction that is forward in DC. Ac- alternate current Dc- direct current Batteries are dc but electricity from Transformers are ac AD |
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| 4164. |
Classify the following reaction into slow and fast reaction. Reaction between an acid qnd base |
| Answer» This reaction called neutrilization reaction | |
| 4165. |
How do differ between hard water and soft water |
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Answer» Hard water is the solution of metals like ca and mg. \tHard water is any water containing an appreciable quantity of dissolved minerals. Soft water is treated water in which the only cation (positively charged ion) is sodium.\tThe minerals in water give it a characteristic taste. Some natural mineral waters are highly sought for their flavor and the health benefits they may confer. Soft water, on the other hand, may taste salty and may not be suitable for drinking.\tHard water contains minerals- Magnesium and calcium. Soft water has minimum or no mineral contents.\tSoft water is preferred for chores and washing related tasks including bathing. hard wtr is soft water in which mg nd ca prticles are mix |
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| 4166. |
What is excretion in plants and human |
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Answer» In plants nitrogenous waste , resins, gums, organic acids, tannins.In human urea urine Oxygen in pkants and carbon dioxide in humans Removing of wastes |
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| 4167. |
why despite good rains we are not able to meet the demand of water of all the people in our country |
| Answer» The usage of concrete does not allow the water to seep in and hence no replenishment in the ground water | |
| 4168. |
Why graph of V-I graph is straight line? |
| Answer» | |
| 4169. |
2018-19 paper pattern of science |
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| 4170. |
What is separations |
| Answer» Separation:It is process is a method to achieve any phenomenon that converts a mixture of chemical substance into two or more distinct product mixtures, which may be referred to as mixture, at least one of which is enriched in one or more of the mixture\'s constituents.A separation may fully divide the mixture into its pure constituents. Separations differ in chemical properties or physical properties such as size, shape, mass, density, or chemical affinity, between the constituents of a mixture. | |
| 4171. |
In reflex action what is the work of brain |
| Answer» The work of brain, withdraw a hand on touching a hot object | |
| 4172. |
Name the part of bryophyllum where the buds are produced for vegetative propagation |
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Answer» No leaf No, leaf notches leaf nodes |
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| 4173. |
what is electric charge? |
| Answer» Unidirectional flow of electron | |
| 4174. |
What is the principle of electric motor? |
| Answer» The principle on which electric motor runs is When a straight current carrying conducter is kept under a strong magnetic field it experience a force | |
| 4175. |
What is progene |
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| 4176. |
Hello doctor Anjali |
| Answer» | |
| 4177. |
Name the Base like bleaching powdered,washing powder etc with their formula |
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| 4178. |
What is herbivores |
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| 4179. |
Life proce |
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| 4180. |
Its goitre |
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| 4181. |
What is Endemic goitee |
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| 4182. |
Define magnet ic field lines |
| Answer» The imagenary lines emerging from poles which are always parallel nd never interest and they imerge from north pole nd end to south pole are called as magnetic field lines | |
| 4183. |
I have to know the chemical compounds colour |
| Answer» Cu blueFe greenAg silverAu gold Hg paleKMNo4 purpleNa white | |
| 4184. |
The magnification produced by a concave mirror is?????? |
| Answer» The magnification produced by a concave mirror is +4D . The image formed by the mirror is enlarged than the object. The positive sign indicates that the image formed is virtual and erect | |
| 4185. |
Plz solve thisIf driver =12 pedestrian =20. Accident =16 then car=????? |
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Answer» bishnupriya you are so classy only u were able to get the answer 18 |
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| 4186. |
Which metal gives hydrogen with hot water |
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Answer» Magnesium I think Aisha it is alkali metals |
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| 4187. |
Kya yaha pr mujhe koi unka nm bta skta ha jisne aj ISS app ko dating app banaya |
| Answer» | |
| 4188. |
What is role of placenta |
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Answer» Through the placenta tha all the requirements of the developing foetus like nutritious, respiration and excretion Placenta play a role in fetus .it is active transport of metabolic waste and nutrients across the barrier maternal and faternal components It connects mothers body to baby body |
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| 4189. |
Electrolysis of chlorine. |
| Answer» do you mean electrolysis of brine solution, | |
| 4190. |
What is there a need to hardness non conventional source of energy? Give two main reason |
| Answer» Non conventional sources of energy are such sources of energy which are not in routine use of so far such as geothermal energy and solar energy.1.Due to rapid industrialisation our living standards are improving and there is a demand for more and more energy.2.As our conventional sources of enegy are depleting we have to tap new sources and develop technology to capture and store energy from such resourses. | |
| 4191. |
Which is the following is a plant hormone |
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Answer» auxin Cytokinin |
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| 4192. |
Practical based questions |
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| 4193. |
Name the type of reaction |
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| 4194. |
Why atmospheric refraction occur. |
| Answer» Atmospheric refraction is the deviation of light or other electromagnetic wave from a straight line as it passes through the atmosphere due to the variation in air density as a function of height??. ... Astronomical or celestial refraction causes astronomical objects to appear higher in the sky than they are in reality.??Hope u understand | |
| 4195. |
Difference between stomata and lenticle |
| Answer» Stomata can found in only green part or loss part of plant and trees .but lenticle on woody part of tree or plant .Parhaves stomata is small in size but lenticle is large... | |
| 4196. |
what is leydig cells |
| Answer» Leyding cell are intrestital cells and polyhedral in shape , display a large prominent nucleus and numerous lipid filled vesicles.they produce testeron in the presence of luteinizing hormone. | |
| 4197. |
Disadvantages of incomplete combustion |
| Answer» Incomplete combustion occurs when the supply of air or oxygen is poor. Water is still produced, but carbon monoxide and carbon are produced instead of carbon dioxide. The carbon is released as soot. Carbon monoxide is a poisonous gas, which is one reason why complete combustion is preferred to incomplete combustion. | |
| 4198. |
Why Mg ribbon is rubbed by Sand paper before burning |
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Answer» Because it reacts with carbon dioxide I think so Sprry my answer was wrong...it is rubbed to remove the coating of mg co3..harsh is right... When mg is kept in air it reacts with air and forms magnesium oxide,hence before burning it is rubbeed to remove this layer For proper combustion |
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| 4199. |
Give an example of a flower which contain both stamens and carpets? |
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Answer» Hibiscus and mustard plant China rose ? Hibiscus |
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| 4200. |
CH3 COOC2H5+ NaOH> |
| Answer» CH3COONA + C2H5OH | |