Saved Bookmarks
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.
| 56151. |
Uses of concave and convex with ray diagram |
|
Answer» I need its ray diagram Uses of a concave mirror:1. In torch, search light, head lights etc. concave mirror is used as reflector.2. It is used as dentist\'s head mirror.Uses of a convex mirror:1. It is used as reflector in street lamps.2. It is used as a rear view mirror in vehicles. |
|
| 56152. |
What is largest cell in our body ? |
|
Answer» Nerve cell Functional unit of brain ( neuron) Nerve cell☺️☺️?? Axon present in nerve. Nerve cell? |
|
| 56153. |
How electric current can produce magnetism?explain it at atomic level. |
| Answer» Electric Current produces magnetism in such a way that electric current has 3 properties of heating effect,chemical effect and magnetic effect. HC oerested first prove that it produces magnetic effect. | |
| 56154. |
Write a short note on fossil fuel |
|
Answer» It is a natural fuel such as coal or oil, that was formed millions of years ago from dead animals or plants in the ground It is convectional source of energy.The fuel which are formed under the earth by dead and digging mater of living beings are called fossil fuel.example-coal,petroleum,natural gas etc. |
|
| 56155. |
Different between resistance and resistativaty |
|
Answer» Resistivity The resistivity of a material is the resistance of a wire of that material of unit length and unit cross-sectional area. The unit for resistivity is the ohm-metre. The resistivity of a material depends on its nature and the temperature of the conductor, but not on its shape and size. ☺️☺️☺️☺️☺️Resistance of a conductor is the obstruction offered by the conductor in the flow of current through it. It is measured by the potential difference needed across the conductor to flow one ampere current through it. ??????????? Resistence-redistence can oppose the current andReativity - restivity means it is based on the length, and area of the wire but it also oppose the current |
|
| 56156. |
What are acquired traits? |
| Answer» The traits that are in a person by birth are known as acquired traits. | |
| 56157. |
What is gut brain |
| Answer» | |
| 56158. |
Which salt is used for photograph |
|
Answer» No Deepak Agcl and AgBr Silver chloride Silver Halide Worng Tata salt |
|
| 56159. |
What are diffrent allotropes of carbon |
|
Answer» 1.diamond 2.graphite and 3. Buckminsterfullerene But actually there are eight allotropes There are three types of allotropes of carbon:-1. Graphite 2. Diamond 3. Buckminsterfullerene The various forms in which carbon exist in nature is known as allotropes of carbon There are two allotropes of carbon:-1. Graphite2. Diamond |
|
| 56160. |
Explain laws of reflection |
|
Answer» the principle that when a ray of light, radar pulse, or the like, is reflected from a smooth surface the angle of reflection is equal to the angle of incidence, and the incident ray, the reflected ray, and the normal to the surface at the point of incidence all lie in the same plane.☺️☺️☺️☺️☺️☺️☺️??????????????????? Law1- incident ray, reflected ray, and the normal lie in the same plane.Law2- angle of incidence is equal to angle of reflection. |
|
| 56161. |
On which the life span of cell depends? |
| Answer» While the general features of human beings can be described with pictures and models of body parts in various degrees of assembly, actual human beings exhibit a great deal of variability that is dictated by their physiology.???☺️☺️☺️☺️☺️☺️☺️In fact, many of your body parts are a different age than your birth age. The process of self renewal is important for you to understand, because its efficiency changes with age.??????????? | |
| 56162. |
What are ionic compound |
|
Answer» Also called electrovalent compound Ionic compounds are solids and hard due to the strong attracting force between the positive and negative ions. These compounds are generally brittle and break into pieces on application of pressure.Ionic compounds have high melting and boiling points because a application of significant amount of energy can break the strong inter-ionic attraction.Ionic compounds are soluble in water but insoluble in solvents like kerosene, petrol, etc. |
|
| 56163. |
Which metal is used to make outer covering of dry cell |
|
Answer» Zinc aur copper Zinc aur kya Zinc |
|
| 56164. |
How ester is formed? Give a chemical eqn to justify |
| Answer» Esters are the compounds of general formula RCOORˈ, formed by the reaction of carboxylic acids with alcohols.RCOOH + RˈOH → RCOORˈ (ester) + H₂OThey posses sweet odour so, that they are used in cosmetics.Ex:Reaction of ethanoic acid with ethyl alcohol produces ethyl acetate. Formation of ethyl acetate (ester) indicates sweet smell.\xa0CH₃COOH + C₂H₅OH →CH₃COOC₂H₅ + H₂O | |
| 56165. |
what is pharmacy |
| Answer» Please see in science book | |
| 56166. |
Which component of the white light bend maximum after passing through the prism and why |
|
Answer» Red colour When white light is made to pass through a prism, a spectrum of seven colors is formed which shows that white light is a mixture of seven different colors. Prism only acts as a medium for the separation of the seven colors. When light falls on the glass prism, refraction takes place. Since the wavelength of different components of light is different and the frequency is constant, each component gets deviated by a different angle due to the difference in velocity in the glass medium. The red color having the maximum wavelength deviates the least and forms the upper part of the spectrum whereas violet having the least wavelength deviates the most. |
|
| 56167. |
How does comparing of different species help in tracing evolutionary relationship. |
| Answer» While tracing evolutionary relationships by the DNA of two organisms, certain aspects like the protein structures, gene loci are taken in consideration. The DNA of an organism determines its protein structure, so if two organisms are closely related then they will have similiar protein structures. These aspects are talked about in graduation courses so at our 10th level we may not expect such questions! If you still need to know then better google it. | |
| 56168. |
Diffrentiate between identical and fraternal twins? |
| Answer» \tIdentical twinsFraternal twinsIdentical twins, this occur when an egg is fertilized by a sperm but the zygote formed get split into two each giving rise to one individual.Fraternal twins are non identical twins, here in this condition two eggs are fertilized by two sperms and therefore separate development of embryo takes place.They are monozygotic as they develop from a single zygote.\xa0They are dizygotic as the two individuals are developed from two different zygotes.They are genetically identical with same *** that is male-male or female-female.They are not genetically identical and may or may not have the same *** that is combinations are male-male, female-female or male-female.\t\xa0 | |
| 56169. |
What is the other name of Fleming left hand rule |
| Answer» Electromagnetism. | |
| 56170. |
Name a hetro atom present in organic compound apart from carbon and hydrogen |
| Answer» Abdhgdjhshdhfnd gsh do | |
| 56171. |
What is other name of wind pipe.? |
|
Answer» Trachea Oesophagus the other name of wind pipe is trachea .oesophagusis the other name of food pipe Oesphagus Trachea Oesophagus Trachea |
|
| 56172. |
Describe respiration in humans . |
|
Answer» The human respiratory system is composed of a pair of lungs. These are attached to a system of tubes which open on the outside through the nostrils. Following are the main structures in the human respiratory system:Nostrils: There two nostrils which converge to form a nasal passage. The inner lining of the nostrils is lined by hairs and remains wet due to mucus secretion. The mucus and the hairs help in filtering the dust particles out from inhaled air. Further, air is warmed up when it enters the nasal passage.Pharynx: It is a tube like structure which continues after the nasal passage.Larynx: This part comes after the pharynx. This is also called the voice box.Trachea: This is composed of rings of cartilage. Cartilaginous rings prevent the collapse of trachea in the absence of air.Bronchi: A pair of bronchi comes out from the trachea; with one bronchus going to each lung.Bronchioles: A bronchus divides into branches and sub-branches; inside the lung.Alveoli: These are air-sacs at the end of bronchioles. Alveolus is composed of a very thin membrane and is the place where blood capillaries open. This is alveolus; where oxygen mixes with the blood and carbon dioxide exits from the blood. The exchange of gases; in alveoli; takes place due to pressure differential. Through lungs we can respirate |
|
| 56173. |
What is hydrogen bond in D.N.A |
| Answer» | |
| 56174. |
What is STD name two STDs |
| Answer» STD are sexually transmitted diseases..and STD are AIDS ,gonorrhea and syphilis | |
| 56175. |
Explaun work of hormone which is realease by testes and ovaries? |
|
Answer» Testes was take sperm and ovaries take ovu that process on search Google The hormone released by testes is testosterone. The work of testosterone hormone is to control the development of male *** organ and some features like deep voice,beard,etc. This hormone is released in males onwards puberty(12-14 years)............. There are two hormones released by ovaries which are oestrogen and progesterone. The work of oestrogen hormone is to control the development of female *** organ and some features like feminine voice,soft skin,etc. On the other hand the work of progesterone hormone is to control the uterus change in menstrual cycle.... Hope it will u☺☺☺☺ |
|
| 56176. |
What is pons ?Where it is situated and what is its function? |
|
Answer» Pons are located behind cerebellum. It is the part of hind brain. The function of pons are to take part in regulating respiration. Pons r presented in our hind brain.. And it is a part of hind brain and it is responsible for the regulation of respiration.. |
|
| 56177. |
Half yearly ke exams me kaam marks aane pe science stream choose karne m problem hogi??? ??? |
|
Answer» Yes Nhi jo next two periodic tests honge ek december main hoga aur ek January main to unme acha score krna and internal main 20 main se 12 ki koshish krna and board main to obviously 80 main se ache marks score kr liye to science stream mil jayegi Thodi se agar hard lobour kiya jai to Koi to answer do........ |
|
| 56178. |
Give an example of a vestigial organ present in human body. |
| Answer» In the context of human evolution, human vestigiality involves those traits (such as organs or behaviors) occurring in humans that have lost all or most of their original function through evolution. Although structures called vestigial often appear functionless, a vestigial structure.The examples of human vestigiality are numerous, including the anatomical ????(such as the human tailbone, wisdom teeth, and inside corner of the eye)???, the behavioral (goose bumps and palmar grasp reflex), and molecular (pseudogenes). Many human characteristics are also vestigial in other primates and related animals. | |
| 56179. |
Chromium electronic configuration through S, p, d, f |
| Answer» 2,8,8,4 | |
| 56180. |
What is positron and nutrino |
| Answer» | |
| 56181. |
What is tungusten carbide |
| Answer» A very hard grey compound made by reaction of tungsten and carbon at high temperatures, used in making engineering dies, cutting and drilling tools, etc. | |
| 56182. |
Why condoms are used |
|
Answer» Condoms are known as \'nirodh\' in hindi. It is used as a barrier for the prevention of pregnancy in women. The main work of condom is to prevent sperms entering into the ******. Due to this,the female gamate can not be fertilised. An important benifit of using condom is that it prevent the male and female from STD(sexually transmitted disease). Try to dnot mixed sperm with oval Condom are used to prevent thr sperms from meeting the ovum by acting as barrier between them.an important benefit in the use of condom is that it protects a person from the sexually transmitted diseases such as gonorrhoea,syphilis,and AIDS For prevent sperms to fuse with ovum |
|
| 56183. |
Difference between AC generator and DC generator ? |
|
Answer» What is the difference between an AC and DC generator?Electromagnetic induction occurs when an electrical wire passes through a changing magnetic field. Generators use electromagnetic induction to convert mechanical energy into electrical energy. In an AC, or alternating current, generator, the electrical current periodically reverses direction. With a DC, or direct current, generator, the current flows only in one direction. There are several other primary differences between AC and DC generators.Design DifferencesBoth AC and DC generators produce currents via electromagnetic induction. In AC generators, the coil through which the current flows is fixed, and the magnet is moving. The magnet’s north and south poles cause the current to flow in opposite directions, producing an alternating current.With DC generators, the coil through which the current flows rotates in a fixed field. The two ends of the coil attach to a commutator: different halves of a single, rotating split ring. Metal brushes connect these split rings to an external circuit. The commutator balances the charges leaving and returning to the generator, resulting in a current that does not change direction.Primary Uses of AC and DC GeneratorsAC and DC generators serve different purposes. Homes typically use AC generators to power small motors and common electrical appliances. These include vacuum cleaners, food mixers, juicers and electrical fixtures.DC generators power very large electric motors — such as those needed for subway systems. Moreover, DC generators provide a reliable and efficient energy supply that can charge banks of batteries used for mobile and off-grid uses. And Dc can not be transmitted long distance it loss more energy Ac generator generate alternate current and Dc direct In Ac current changes it direction after equal interval of time and it can be tranmitted over long distance without much loss of electricity. Ac generator are commonly use to generate electricity |
|
| 56184. |
Which element is more acid |
|
Answer» It can be carbroane ok....????????☄️??⭐️??????????? Hydrogen???????????????⭐️⭐️????? Nho4 |
|
| 56185. |
What is nephorn |
| Answer» Nephron is the functional and structural unit of kidney . One kidney contain million of nephrons . It is called functional unit of kidney because of these nephrons help in excretion of waste from kidney by different different process. Nephrons filter the blood . | |
| 56186. |
A thin lens has a focal length of 25 cm. What is the power and what\'s its nature? |
| Answer» Power is eqal to reciprocal of focal lenght. But focal lenght is in cm so convert it in meters. P is eqal to 100/25 which is eqal to 4 | |
| 56187. |
Does temperature effects the solubility of NaCl |
| Answer» No | |
| 56188. |
Why variation is necessary |
| Answer» Maybe | |
| 56189. |
Why we fill the ketone group valencies of first member with methyl and not just with hydrogen ? |
| Answer» | |
| 56190. |
property of bases |
| Answer» 1. Bases have bitter taste2. Bases feel soapy to touch 3. Bases turn red litmus to blue 4. Bases conduct electricity in solution ( they are electrolytes)5. Bases react with some metals to form hydrogen gasAmit this is your questions answer | |
| 56191. |
What is the far point of presbyopia |
| Answer» It is infinity because it is called as old age hypermeteropiam | |
| 56192. |
Nootan book solution class 11 |
| Answer» | |
| 56193. |
Hey all of you |
|
Answer» Hi?? Hii |
|
| 56194. |
In light chapter in lens formula v is postive or negative |
|
Answer» Who is correct V will be negative because the magnification formula is -v/u Positive |
|
| 56195. |
Diffrence between roasting and calcination |
|
Answer» In roasting process, sulphide ore is strongly heated in presence of air to form metal oxide while in calcination, carbonated ore is strongly heated in absence of air to form metal oxide Roasting is done for sulphides and calcination ix done for carbonates You can find it in google |
|
| 56196. |
bar magnet and electromagnet |
|
Answer» Write question properly What is your question |
|
| 56197. |
Three ways to produce magnetic field |
|
Answer» Your most welcome shagun ☺?? The three ways are:i) by using a permanent magnet ii) by using electomagnetiii) a current carrying coil may also work Thanks Aastha.....? These are the three well-known and popular methods of producing magnetic field. When it comes to magnetic field, it is produced when the electric charge actually carries electrons. Hii shagun here\'s ur answer......It includes;The three ways to produce magnetic field : 1• Use the permanent magnets.2•Charge induced magnetic field.3•Use the electromagnet. |
|
| 56198. |
High of tripsin |
| Answer» If trypsin is high it becomes less specific and tends to cut protease and tryptic digest analysis becomes more difficult ? | |
| 56199. |
Why compounds like petrol,coal etc.generate heat or light or both on combustion?? |
|
Answer» Because they are volatile substance and very easy to catch fire. And lights up easily & and requires a low ignition temperature to Ignite itself. Because both contain volatile substances |
|
| 56200. |
Give an example for the test of unsaturation |
| Answer» Bromine water test can be done for test for unsaturation. | |