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.
| 50251. |
What is Toulene? |
| Answer» Toluene, also known as toluol is an aromatic hydrocarbon. | |
| 50252. |
What is ethonoil |
| Answer» Ethonoil is a carbon compound and this is alcohol | |
| 50253. |
Will ethanol release co2 when treted with Na |
|
Answer» No. The reaction is- C2H5OH + NA = C2H5ONA +h2o No |
|
| 50254. |
Explain the main points of difference between Agro Forestry and Urban Forestry Programme. |
| Answer» Agroforestry:-Agroforestry is any sustainable land-use system that maintains or increases total yields by combining food crops (annuals) with tree crops (perennials) and/or livestock on the same unit of land, either alternately or at the same time, using management practices that suit the social and cultural characteristics of the local people and the economic and ecological conditions of the area. It combines1. Production of multiple outputs with protection of the resource base.2. Places emphasis on the use of multiple indigenous trees and shrubs.3. Particularly suitable for low-input conditions and fragile environments.4. It involves the interplay of socio-cultural values more than in most other land-use systems, and5. It is structurally and functionally more complex than monoculture.Social forestrySocial forestry means the management and protection of forests and afforestation on barren lands with the purpose of helping in the environmental, social and rural development.The term, social forestry, was first used in India in 1976 by The National Commission on Agriculture, Government of India.It also aims at raising plantations by the common man so as to meet the growing demand for timber, fuel wood, fodder etc., thereby reducing pressure on traditional forest areas. This concept of village forests to meet the needs of rural people is not new. It has existed through the centuries all over the country, but it is now being given a new name.In India, it has five objectives-1. Fuel wood supply, so as to replace cow-dung as a source of energy (conventional energy).2. Small timber supply.3. Protection of agricultural fields against wind and desertification.4. Fodder supply, and5. Recreation needs. | |
| 50255. |
Who Proposed Five Kingdom |
| Answer» Robert H Whittaker | |
| 50256. |
concept map of all chapters of science |
| Answer» | |
| 50257. |
How do mendel\'s experiments show that traits are inherited independently |
|
Answer» By the third law During dihybrid cross by Mendel, it was observed that when two pairs of traits were considered; each trait expressed independent of the other. Hence, he was able to propose the Law of Independent Assortment which says about independent inheritance of traits. |
|
| 50258. |
What is pollination? What are its two types |
|
Answer» Pollination means\xa0the transfer of pollen to a stigma, ovule, flower, or plant to allow fertilization.its types are1. cross pollination2. self pollination The transfer of pollen grains from anther to stigma is known as pollination......Its two types are 1.Self pollination and 2.Cross pollination. |
|
| 50259. |
Structure of Neurons and their functions |
|
Answer» Function of neuron is to Transfer nerve impulse in the form of electrical signals to the different parts of body Neurons, also known as nerve cells, send and receive signals from your brain. Specialized projections called axons allow neurons to transmit electrical and chemical signals to other cells. Neurons can also receive these signals via rootlike extensions known as dendrites.Neurons send signals using action potentials. An action potential is a shift in the neuron’s electric potential caused by the flow of ions in and out of the neural membrane.Action potentials can trigger both chemical and electrical synapses. |
|
| 50260. |
What are two stages of photosynthesis? |
|
Answer» The process of photosynthesis occurs in two stages:\tLight-dependent reaction or light reaction\tLight independent reaction or dark reaction Light and dark reaction Light reaction and dark reaction.. |
|
| 50261. |
Notes of chapter |
| Answer» Khud banaao | |
| 50262. |
Diagram will come to draw |
|
Answer» yes Yes.. 3 or 4 |
|
| 50263. |
What do mean by hydrocarbon |
|
Answer» Carbon when forms covalent bond with hydrigen When carbon form bounds with hydrogen is called hydrocarbon The compound which made up of only carbon and hydrogen . A Mixture of carbon and hydrogen only A compound formed by bonding of hydrogen and carbon together ?? |
|
| 50264. |
Anyone can suggest me how to study for boards Also when wake up |
|
Answer» You need to take atleast 6-7 hours of sleep. And the most important give more time to your weak subjects. Go through NCERT. and also solve the previous year board papers. Thank you for your suggestion. solve out sample paper and wake up 5 o clock |
|
| 50265. |
Can NCERT question sufficient for pass in CBSE board |
|
Answer» Yes, but try also RS Aggarwal and RD sharma books also Yes but further studies can be done to attain good mrks Ya It is more than sufficient Yupps Yes of course ?? |
|
| 50266. |
Anyone will tell me how they prepare for boards by proper schedule. |
| Answer» Leave coaching n tuitions n start study for 7 hr - 10 hr self study | |
| 50267. |
Pls any one can tell me the difference between the digestion induedenomm and stomach |
| Answer» Pls reply fast today is my exam | |
| 50268. |
Define a food web.State its significance for ecosystem. |
| Answer» Food web is the collection of many food chain it also starts from producers | |
| 50269. |
Is there any trick to understand ray diagrams ? |
|
Answer» Nhi Muje khud nhi aaye By learning rules of ray diagram you can easilly understand and draw ray diagrams I dont think so just repeated practice. According to me if you learn rules for making ray diagram you can easily draw it |
|
| 50270. |
Necessary condition required for see a rainbow |
|
Answer» For seing rainbow it depend on rain drop and oppsite sun light A light emitting device Sun in opposite side and rain The beatiful rainbow can be seen when sun is shining and raining at the same time.Rainbow can be seen on the opposite side of sun. Actually the small waterdroplet behaves like prism and disperse the sunlight into constitutent seven colours. Sun and Rain...both⛅☔ |
|
| 50271. |
As vasactomy is for men then what is for women |
|
Answer» Tubectomy Tubectomy Tubectomy Tubectomy?? |
|
| 50272. |
Darwin\'s theory |
|
Answer» When the elements were written in order of increase ing atomic masses the atomic mass of rhe middle was the average of atomic mass of the others two element s Hiii Following are the points of Darwin’s theory of natural selection:Over-production: Every organism has enormous potential to reproduce.Struggle for existence: Population size of an organism is limited due to struggle between the members of same species as well as the members of different species. It is due to struggle for food, space and mate.Variation: Due to struggle, the fit organisms possess some variations which are favourable, and they can leave the progeny to continue the favourable variations.Survival of the fittest: The fittest organism survive to continue the favourable variations.Formation of a new species: These variations when accumulated for a long time, leads to the origin of a new species. |
|
| 50273. |
What are the diagrams which are important for 2019 20 board exams for biology |
|
Answer» Feamle reproductive Organs Kidney, female reproductive system, nephron, digestive system of human, nutrition in amoeba, etc. All are important Hey ! You can search on the utube???? |
|
| 50274. |
Observation table chapter 1 |
|
Answer» Ncert or other book Chapter Which book |
|
| 50275. |
Ethonoic acid react with sodium ,in Chemical reaction |
|
Answer» Hii where r u from When ethanoic acid react with sodium then sodium ethanote form and hydrogen gas will evolve.. Ch3cooh + Na -------> CH3COONA +H2 When ethanoic acid reacts with sodium carbonate, a brisk effervescence of carbon dioxide gas is observed. The salt formed due to this reaction is sodium ethanoate.The chemical equation for the above reaction is as follows:2CH3COOH + Na2CO3 \xa0→ 2CH3COONa + CO2 + H2O |
|
| 50276. |
passing marks in all papers |
|
Answer» 33% 35 13..... 33marks including assessment |
|
| 50277. |
Function if auxin |
|
Answer» It promote growth in stems and flowers .It promote cell division. It delay fruit senescence. It is a phytohormone which is necessary for plant. Promotes growth in the stem Auxins are phytohormones, which help to coordinate growth and development in the plant body. Auxin stimulates cell elongation. Together with cytokinins, auxins stimulate cell division. Auxins breaks the root apical dominance induced by cytokinins and induce new root formation. But they induce shoot apical dominanace. Auxins are responsible for causing phototropism, geotropism and hydrotropism. Auxin is also important for fruit growth and delays fruit senescence. Thus auxin is a very important plant hormone. Elongation of stem |
|
| 50278. |
What is lymbs ????? |
|
Answer» Lymph\tLymph is another fluid involved in transportation.\tSome amount of plasma, proteins and blood cells escape into the intercellular spaces in the tissues to form lymph or tissue fluid.\tLymph is similar to blood plasma but colorless and contains less protein.\tLymph drains into lymphatic capillaries which join to form large lymph vessels and which open into larger veins.\tFunction of lymph is to carry absorbed digested fat from intestine and it also drains excess fluid from extra cellular space back into the blood. Lymbs nahi hai lymph hai |
|
| 50279. |
Which type of current is more harmful and why |
|
Answer» Both AC , DC current and voltage are equally dangerous. People who say that AC is less dangerous than DC , please look at the statistical report of how people die due to current fallow. Ac. Because it attracts human body |
|
| 50280. |
How many types of snakes |
| Answer» jitne aapke ser me baal ho | |
| 50281. |
Type of snakes |
|
Answer» Poisonous and Non poisonous... Unlimited |
|
| 50282. |
2g of ferrous sulphate solution crystals are heated in a dry boiling tube list two observations. |
|
Answer» fe+so4=fe2o3+so2+so3 Sulphur dioxide and sulphur trioxide gases ate released also ferric oxide is formed The colour of ferrous sulphate change into reddish Brown and gas sulphur dioxide and sulphur trioxide The colours of the compound change to light green to white which on further heating changes to dark brown .* |
|
| 50283. |
What are advantages of soaps on detergent |
|
Answer» \tDetergents are preferred over soaps as detergents have wider range of uses.\tDetergents can be used in hard water as they reacts less to minerals of hard water and\tdoes not form unwanted residues.\tWhile in case of soaps, they cannot be used in hard water.\tIn hard water soap will form scum, which is difficult to remove.Hence detergents are preferred over soap. Soaps are biodegradable wheras detergents are non - biodegradable. mere ghar pe aaja practically samjha dunga |
|
| 50284. |
What is efflorescence give example |
|
Answer» In chemistry, Efflorescence is the loss of water (or solvent) of crystallization from a hydrated or solvated salts to the atmosphere on exposure to sir.Example: Gypsum (CaSO4.2H2O) is a hydrated solid that in a sufficiently dry environment,will give up it\'s water to the gas phase and form anhydrite (CaSO4). Hii roli i don\'t now about your question sorry |
|
| 50285. |
Does practical based questions will come in board exam |
|
Answer» Yaa Yes 1 or two questions Nope.. Noo Yes No.. |
|
| 50286. |
Why is it necessary of double circulation in human beings |
|
Answer» For efficient supply of oxygen and to maintain the body temperature. To seprate oxy and deoxy genated blood To maintain proper body temperature as we are warm blooded It is necessary to separate oxygenated and deoxygenated blood for an efficient supply of oxygen to the body cells.. |
|
| 50287. |
What is the pH value of sperm????? |
| Answer» 7.1 to 8.0 | |
| 50288. |
What is efferent ray |
| Answer» Pls help me | |
| 50289. |
Explain double circulation? |
|
Answer» A circulatory system in which blood travels twice through the heart in one complete cycle of the body is called blood circulation... ncert |
|
| 50290. |
Give an example of negative thigmotropism and negative chemotropism |
|
Answer» Negative thigmotropismThe growth of root underneath the soil.Negative chemotropismWhen the growth response is away from the stimulus ncert |
|
| 50291. |
Budding in yeast may result in the formation of?? |
|
Answer» Ethanol Kyu tajinder singh isme ncert kyu nhi likha ye bhi to ncert ka hi hai may be, identical offspring |
|
| 50292. |
Letters when written on a paper when seen through a glass slab appear to be raised.why so? |
| Answer» Due to refraction through the glass slab | |
| 50293. |
Why the sun is reddish in the time of sunrise and sunset |
|
Answer» The sun is reddish at the time of sunrise and sunset because of the scattering of light by the molecules in air and by the fine particle present in the atmosphere. Sun appear reddish at the tym of sunrise nd sunset bcoz at that tym sun is nearer to earth horizon nd light have to travel longer distance to reach during this traveling mist of the shorter wavelength light gets disappeared nd the longer wavelength light reaches us like red,orange etc. |
|
| 50294. |
Socialist principles |
| Answer» Sory this topic is related to social science | |
| 50295. |
Any one have CBSE science practice paper 2 \'s answer key (2019-20)science-086 |
| Answer» Yes I have | |
| 50296. |
How much hours we should sleep ?? |
|
Answer» 6 or 7 7-8 hrs 7-8 hours of sleep we need as we have to retain information 6 to 7....max......min 4 to 5....fr students who study....nd for pgl students.....they can sleep all day???? According to me,At least 6-7 hours..? |
|
| 50297. |
Define super conductivity |
|
Answer» It is a set of physical properties Observed in certain materials. It is given by ohm Materials which can loose resitivity with decrease in temp are call super conductors... Yr bht tym phle padha tha,sure ni hu?sorry |
|
| 50298. |
Why should national parks be allowed to remain in their pristine form? |
| Answer» National Parks are allowed to remain in their pristine form because they contain highest biological diversity, natural habitats for many wild animals, flora and fauna. Their primary use is to conserve biodiversity and protection of many wild and endangered species. National parks are established under International Union for Conservation of Nature (IUCN) as category II protected areas. National parks are essential for maintaining the ecosystem. National parks are having influence on cultural heritage, health, and social prosperity. | |
| 50299. |
Describe the double fertilisation in plants |
| Answer» Soon after pollination the pollen grains start germinating and form a pollen tube. The pollen tube grows within the style till it reaches the ovary.On reaching the ovary it enters the ovule through an opening called micropyle. In the meantime, two male gametes are formed in the pollen tube. One of the male gametes fuses with the egg, the process is called syngamy. The product formed is termed as zygote. The other male gamete fuses with the two polar nuclei, one from each end of embryo sac, to form endosperm nucleus. This process is called triple fusion. In this process three nuclei, two polar nuclei and one male gamete is involved, so it is called triple fusion. Thus, inside each embryo sac two fusions, i.e., syngamy and triple fusion take place. This mechanism of two fusions occurring in an embryonal sac is called double fertilisation. After fertilisation, the ovule develops into seed and the ovary develops into a fruit. | |
| 50300. |
Why is hydrogen peroxide kept in coloured bottles?give reaction and type of reaction. |
|
Answer» Hydrogen Peroxide or H2O2 is a highly reactive compound which gets dissociated in the presence of light to form water and oxygen.To prevent this dissociation reaction, H2O2 is stored in coloured bottles to prevent light from entering the bottles. As hydrogen is reactive gas therefore it is kept in separate bottle |
|