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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.
| 66151. |
Briefly expain sign convention in mirror and lens |
| Answer» Sign convention in mirror1.All distance are measure from the pole of the spherical mirror.2.the distance measured in direction of incident of light are taken as positive(+) and the distance measure in opposite to direction is negative(-).3.the height measured upward nd perpendicular to the principal axis of the miŕror are taken as positive.-sc for lens1 aĺl distance are measure with respect to optical centre of lens.2.focal length of convex lens is taken as (+) nd for concave lens be (-). | |
| 66152. |
name the neuron through which infirmation travels as an electrical impulse |
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Answer» axon Gjvguu |
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| 66153. |
name the part of neuron where information is acquired. |
| Answer» Information is acquired at dendrite tip. | |
| 66154. |
What is a inheritance unit |
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Answer» Inheritance unit is same as unit of dna Genes Genes are the basic unit of inheritance . |
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| 66155. |
Name the functional groups present in CH3CHO and CH3COCH3 |
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Answer» First on is aldehyde and another is ketone group. Functional group of :-CH3CHO=Aldehyde...CH3COCH3=Ketone...:-) convert ethanol to propanone Aldehyde and ketones |
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| 66156. |
Why diamond is known as octahedral? |
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Answer» Tetrahedral? Tetrahedral .....? |
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| 66157. |
What os a sooty fire? |
| Answer» Sooty fire means incomplete fossil fuel combustion.. | |
| 66158. |
Why magnesium ribbon burn |
| Answer» before burning in air the magnesium ribbon is cleared by the by rubbing with the sandpaper this is done to remove the protective layer of basic magnesium carbonate from the surface of magnesium ribbon | |
| 66159. |
Whate is trophic movement |
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Answer» The directional growth movements of plant due to external stimuli are called tropic movement. It can be either towards the stimulus, or away from it. For example, in case of phototropic movement, shoots respond by bending towards light while roots respond by bending away from it The directional growth movement of plant due to external stimuli is called trophic movement....... Example..... Towards sunlight....... Towards water |
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| 66160. |
All chemical reaction according to class 10 syllabus |
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Answer» Bahot pehle hi hua tha Sab ka school ka time change hua ha |
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| 66161. |
Struture pf nephron |
| Answer» See page 111 of ncert text book | |
| 66162. |
ethonal property |
| Answer» \tEthanol exists in liquid state at room temperature.\tMixture of alcohol to ethane results in the formation of ethanol and it is the active ingredient of all alcoholic drinks. Even a small quantity of ethanol if consumed can causes drunkenness.\tBeing a good solvent, it is also used in medicines like tincture of iodine, cough syrups, and many other tonics. | |
| 66163. |
Curdling of milk |
| Answer» It is due to the formation of latic acid.......... Do u asking for curd na....... If it is so then my answer is correct...... | |
| 66164. |
What is double circulation of heart. |
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Answer» In human beings, the blood goes through the heart twice during each cycle i.e. the blood passes through the human heart two times to supply once to the whole body. So, it is called Double Circulation of blood.The double circulation of blood includes:(i) Systematic Circulation(ii) Pulmonary Circulation(i) Systematic Circulation: It supplies oxygenated blood from left auricle to left ventricle, thereby pumped to various body parts. The deoxygenated blood is collected from the various body organs by the veins to pour into vena cava and finally into the right atrium (auricle). Right atrium transfers the blood into the right ventricle.(ii) Pulmonary Circulation: The deoxygenated blood is pumped by the right ventricle into the lungs for oxygenation. The oxygenated blood is brought back to left atrium (auricle) of the human heart. From left atrium, the oxygenated blood is pushed into the left ventricle. The left ventricle pumps oxygenated blood into aorta for systematic circulation. Circulation in which blood is passed through the heart twice Double circulatory systems are important because they ensure that we are giving our tissues and muscles blood full of oxygen, instead of a mixture of oxygenated and deoxygenated blood. While it may take a bit more energy than a single circulatory system, this system is much more efficient. |
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| 66165. |
What is difference between monogybrid inheritance and dihybrid inheritance? |
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Answer» \tMonohybrid CrossDihybrid Cross1. It is a cross between two pure organisms in order to study the inheritance of a single pair of contrasting character.1. It is a cross between two pure organisms in order to study the inheritance of two pairs of contrasting characters.2. It produces a phenotypic monohybrid ratio of 3:1 in F2 generation.2. It produces a phenotypic dihybrid ratio of 9:3:3:1 in F2 generation.3. It produces a genotypic ratio of 1:2:1 in F2 generation.3. It produces a genotypic ratio of 1:2:1:2:4:2:1:2:1 in F2 generation.4. Example: Cross between tall and dwarf pea plants.4. Example: Cross of pea plants having round and yellow seeds and plants with wrinkled and green seeds.\t Thank u In m i we take only 1 character or trait like height or colour but in d.i. we take 2 characters like shape and colour |
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| 66166. |
How are CGS unit & SI unit different? |
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Answer» Your welcome Ok... Honey Thanks Cgs mein toh pata hain kya use hota hain lekin si uniT mein quantity ko measure karne ke liye units change ho jata hain I can\'t understand. Can u explain briefly Si unit mein woh sab change ho jata hain like metre for length,kg for mass and hour for time |
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| 66167. |
Define CGS unit. |
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Answer» Ok... The CGS system of units is one in which the length is measured in centimetre, mass is measured in gram and time is measured in second. Centimtre for length gram for mass and second for time .this is cgs unit |
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| 66168. |
What are life process? |
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Answer» Minimum set of functions which maintain our well being are called life processes The processes that are necessary for an organism to stay alive. Eg. Nutrition,respiration, etc. There are six life processes that all living organisms perform. They are movement, respiration, growth, reproduction, excretion and nutrition. Processes which r necessary for an organism to live and to function well like respiration, digestion etc. |
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| 66169. |
Draw the diagram of brain and tell all part function |
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Answer» We cann\'t post the diagram Aarish. U can see diagram in ncert book Mid brain controls reflex movements of the head neck and trunk. Hind brain consist of pons medulla and cerebellum. Pons helps in respiration. Cerebellum maintains posture of the body. Medulla controls involuntary actions. Forebrain consist of cerebrum which is the main thinking part of brain. I can tell u only it\'s functions |
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| 66170. |
Why the colour of sky is blue even though violet and indigo also have shorter wavelength?? |
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Answer» Because our eyes are more sensitive to blue colour than voilet and indigo What?? When we look up at the sky, the red cones respond to the small amount of scattered red light, but also less strongly to orange and yellow wavelengths. The green cones respond to yellow and the more strongly scattered green and green-blue wavelengths. The blue cones are stimulated by colours near blue wavelengths, which are very strongly scattered. If there were no indigo and violet in the spectrum, the sky would appear blue with a slight green tinge. However, the most strongly scattered indigo and violet wavelengths stimulate the red cones slightly as well as the blue, which is why these colours appear blue with an added red tinge. The net effect is that the red and green cones are stimulated about equally by the light from the sky, while the blue is stimulated more strongly. This combination accounts for the pale sky blue colour. It may not be a coincidence that our vision is adjusted to see the sky as a pure hue. We have evolved to fit in with our environment; and the ability to separate natural colours most clearly is probably a survival advantage. Dakta na parga |
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| 66171. |
Which nutrients absorbed by small intestine and reabsorbed by the kidney tubules |
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Answer» Glucose is a common nutrient that is absorbed in the small intestine and reabsorbed by the kidney tubules.Glucose is the simplest form of sugar and the most basic units of carbohydrates obtained by the digestion of carbohydrates in the small intestine. It is one of the most important sources of energy. Therefore, it is absorbed in the small intestine by the surrounding blood capillaries so that it can be transported or moved on by the blood to different parts of the body. Glucose ( Carbohydrates ) is being absorbed and reabsorbed by small intestine and kidney resp...... Glucose Glucose/Amino acid Amino acid |
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| 66172. |
Why don\'t we get red patch of light after converging the sun\'s light ray? |
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| 66173. |
Titanium is called a strategic metal |
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Answer» Titanium is called a strategic metal as it can be used in producing space crafts,aircrafts and missiles. It is fourth most abundant metal on earth. \tTitanium is called strategic metal as it can be use in producing space craft , aircraft and missiles.\tIt is the fourth most abundant metal on the earth.\tIt is smoky grey metal.\tSince it is resistant to salt water and acid corrosin it is used in making durable corrosion resistant alloys. Yes it called As it can be use to produce space craft, aircraft, and missiles |
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| 66174. |
How do mandeles experiment show that traits may be dominate or recessive |
| Answer» Mendel took pea plants with different characteristics – a tall plant and a short plant, produced progeny from them, and calculated the percentages of tall or short progeny. there were no halfway characteristics in this first generation, or F1progeny – no ‘medium-height’ plants. All plants were tall. This meant that only one of the parental traits was seen, not some mixture of the two. He carried his experiment further by getting both the parental plants and these F1 tall plants to reproduce by self-pollination The progeny of the parental plants are, of course, all tall. However, the second-generation, or F2, progeny of the F1 tall plants are not all tall. Instead, one quarter of them are short. This indicates that both the tallness and shortness traits were inherited in the F1 plants, but only the tallness trait, which was dominant, was expressed while shortness, which was recessive trait, remained dormant in F1.Mendel’s first law of inheritance states that when a pair of contrasting factors is brought in a hybrid, one factor masks or inhibits the appearance of the other. The one which inhibits is the dominant one and which is inhibited is recessive | |
| 66175. |
What is the role of seminal vesicles and the postate gland? |
| Answer» i. Seminal vesicles - It secretes alkaline secretions which lower the pH of semen and provide nourishment. The function of Seminal vesicles is to store sperms and to secrete seminal fluid that makes the sperm active.ii. Prostate Gland - The secretions of these glands keep the sperm active and mobile. Prostate Gland secretes alkaline fluid and nourishes sperms which is discharged into the urethra. | |
| 66176. |
Difference between ammeter and voltmeter |
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Answer» Ammeter used in series and voltmeter used in parallel combination Ammeter is used for measuring current and voltmeter is for measuring potential difference. Ammeter is used to measure current, low resistance device Voltmeter : measure voltage, high resistance device Amm.. series mein connect rhta hain aur voltme.. parallel mein Ammeter current mapta hain aur voltmeter pd mapta hain |
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| 66177. |
What is silvering of mirror |
| Answer» The side of mirror which is silvered is the reflecting side. As silver is a best reflector | |
| 66178. |
Sample paper of class 10th Sahitya Bhawan sample paper 1 and 2 2019 |
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| 66179. |
Eastrification |
| Answer» Ven alcohol reactx vd carboxylic acids to form ester dix rexn ix knw as Esertificatn | |
| 66180. |
What is double fertilisation????? |
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Answer» Double fertilization is a complex fertilization mechanism of flowering plant .This process involve the joining of a female gametophytes with two male gametes.It begins when a pollen grain anther to the stigma of the carpel.......:-) The process involves joining of a female gametophyte with two male gates in a flowering plant . I hate this bio |
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| 66181. |
What is the next higher homologue in methanol (CH3OH)? |
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Answer» The next higher homologue in methanol ( CH3OH) is ETHANOL. Ethanol |
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| 66182. |
Calculate the charge in copper wire of 20g .Atm.weight of copper =63.5Hint: solve by mole concept |
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| 66183. |
Limitations of newlands law of octaves |
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Answer» Limitations -:1) It was applicable till calcium only.2) Newland assumed that there are only 56 elements existed in nature and no new elements will be discovered in future.3) He placed two elements having different properties together in same spot i.e- Co and Ni4) Iron resembles with cobalt and nickel but was placed far away.5) When noble gases were discovered the whole arrangement was disturbed. Sorry.....third point me were ke baad \'not\' nhi hoga 1) it was applicable up to caclium only 2) co and ni were placed in same place and their properties don\'t match with flourine chlorine etc.3)it can not accommodate elements which were not discovered later4) some heavier elements were placed before lightier elements...... |
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| 66184. |
Can you please give some examples of amphoteric oxides.??????? |
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Answer» SiO2 silicon oxide also amphoteric oxide Al2O3,Zno etc.... Example of Amphoteric oxides are Aluminium oxide (AL2O3) and Zinc oxide(ZnO) I mean to sat zinc and alu. oxides Aluminium and zinc are the only amphoteric oxides Aluminum oxide, zinc oxide...... |
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| 66185. |
In which region the magnetic field around a current solenoid is uniform? Show with diagram |
| Answer» Inside the solenoid | |
| 66186. |
What is valency of carbon in alkanes and alkynes |
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Answer» The valency of a given element is always counted as the fixed no of valence electrons present in the outermost shell of the electron,In carbon the no of valence electrons is 4 and thus the valency is 4 and does not change upon the type of bonding it performs Its always 4 ..I think so???? |
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| 66187. |
Define the term Heterozygous |
| Answer» Genes come in pairs kld alleles & each pair ix located in a specific position or locus on a chromosome...... If the two alleles at a locus are identical to each other they are homozygous, If they r dffrnt frm one another they are heterozygous..... I thnk it vl hlp uhhhh | |
| 66188. |
What is meant by the frequency of alternating current? |
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| 66189. |
What are the precaution of ph |
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| 66190. |
Name the type of reaction in following =(1):garbage producing foul smel |
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Answer» Decomposition reaction. I think its rancidity......???? |
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| 66191. |
Why Mendel chosen pea plant |
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Answer» Kyuki yeh jalti se apna off spring De deta h Pea plant has well contrasted characters. We can differentiate easily by just looking to the plant. Therefore, Mendel chose pea plant |
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| 66192. |
What is the fate of callus obtained during tissue culture?? |
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| 66193. |
function of testrogen |
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Answer» Please ans. the above que if u know Divya both r same It is in the reproduction chapter ... Divya Its not testrogen, the actual word is *testosterone* Yes archana is right What is it??? I have never studied about it, not even its name Help in formation of sperms and responsible for puberty in boys |
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| 66194. |
Q. What do mean by hydrated salt? Explain with some examples |
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Answer» A hydrated salt (or hydrate) is a salt which has a number of water molecules associated with the ions within its crystalline structure. These water molecules maybe referred to as the waters of crystallization or water of hydration.\xa0Example:Washing soda — Na2CO3.10H20\xa0Gypsum — CaSO4.2H2O\xa0Plaster of paris — CaSO4. 1 / 2 H2O.\xa0 salts that contains water of crystallisation is called hydrated salt.eg. sodium sulphate decahydrate (Na2SO4.10H2O)& copper sulphate pentahydrate (CuSO4.5H2O) |
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| 66195. |
Function of blood vessels,lymph |
| Answer» Lymph is a tissue fluid or extracellular fluid that contains wbc ,plateletts some amount of plasma and proteins.Its function:• It help in absorbtion of fat.• it also protects us from diseases by killing microbes and producing antibodies. | |
| 66196. |
What is chemic |
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| 66197. |
What is the difference between ac current and dc current |
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Answer» thanks !!! In ac, the direction of current is changed after every turn whereas it is not so in dc \tAC 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.The rotating magnets cause the change in direction of electric flow.The steady magnetism makes the DC to flow in a single direction.The frequency of AC is depended upon the country. But, generally, the frequency is 50Hz or 60Hz.DC has no frequency of zero frequency.In AC the flow of current changes it direction backward periodically.It flows in a single direction steadily.Electrons in AC keep changing its directions – backward and forwardElectrons only move in one direction – that is forward.\t
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| 66198. |
Explain the types of plant hormones |
| Answer» Auxin gibberlines and cytokinines are growth promoters whereas absscissic acid and ethylene are growth inhibitors. | |
| 66199. |
What do you understand by watershed management ? List any 2 advantages of watershed management? |
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Answer» Watershed management is the study of the characteristics of a watershed that manages the water quality, water supply, drainage, rain water flow and other sustainable maintenance planning regarding a watershed.Advantage:\tWater quality is strictly maintained.\tDistribution of water is equal and sustainable.\tProtection from flood condition by controlling rain water flow. Watershed management is also called rainwater harvesting. Rainwater harvesting is help in management of water. The main aim of rainwater harvesting is to improve or increase the ground water table. The advantage of watershed management are:It help in saving the water where there is scarcity of water. Stored water is used in irrigation. |
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| 66200. |
What is speciation ? What are the four factors responsible for speciation ? |
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Answer» Speciation is the process in which one or more species arise from previously existing species. A single species may give rise to a new species or two different species may give rise to a new species. For example humans have evolved from dryoselectionSome factors which are responsible for the same are:1-Mutation: Mutation (random changes in genome) can also play a role in speciation. Sometimes crossing of two unrelated species can also lead to speciation and a new ferttile species can be formed. 2- 2. Geographical barriers: Geographical barriers such as mountain ranges, seas or rivers may produce a barrier to gene flow and the inability of organisms or their gametes to meet leads to reproductive isolation and hence speciation.3. Natural selection: Changes in allele and genotype frequencies within the populations, by natural selection.4-. Genetic drift: Genetic drift refers to the fact that variations in gene frequencies within populations can occur by chance rather than by natural selection. Random genetic drift may be an important mechanism in evolutionary change in small or isolated populations. In a small population not all the alleles which are representative of that species may be present. Chance events such as the premature accidental death prior to mating of an organism which is the sole possessor of a particular allele from the population. Please explain them?? It is the formation of new species from pre existing species . The four factors on which it depends r natural selection , genetic drift , flow of gene , and geographical isolation .....Hope it helps u ? |
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