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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.
| 58801. |
What is placenta and what does it do |
| Answer» Embryo gets nutrition from mothers blood with the help of a special tissue called placenta | |
| 58802. |
What is difference between slaked lime and lime water |
| Answer» Lime water-cao,slaked lime -ca(oh)2 | |
| 58803. |
Ch3cooh+nahco3 _ |
| Answer» Ch3coona+co2+h2o | |
| 58804. |
What is earth wire? How it works in our domestic circuit |
| Answer» earth wire is literally a wire that goes down into the earth - also known as an “earth ground.” It\'s meant to be the electrical path that unwanted electricity (such as lightning or a short-circuit) finds easiest to take. | |
| 58805. |
Difference between aquarium and aquatic ecosystem |
| Answer» | |
| 58806. |
Frnds... tell me prostate gland |
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Answer» Metallic character decreases along the period due to decrease in atomic size and increase in effective nuclear charge Helps in transport and provide nourishment for sperm |
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| 58807. |
What is thermite reaction???? Answer fast |
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Answer» it is commanly used in weldings Fe2O3 + 2Al -------------> Al2O3+2Fe+ large heat.... Reaction in which al is used to reduce iron ore |
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| 58808. |
How to find the group and periodic no. Of element |
| Answer» Group number can be defined by the valence electrons in the shell and period is defined by the number of shells..... | |
| 58809. |
What is termite reaction |
| Answer» The process of igniting Aluminium and Ferric oxide is called thermite reaction. This is an exothermic reaction. Iron obtained in this process is in molten state.Fe₂O₃ (s) + Al (s) →Al₂O₃ + 2 Fe(l) + HeatThermite reaction used for the welding of rails (joining metals) called as thermite welding. | |
| 58810. |
Mandal law of inhheritence |
| Answer» Mendel\'s Laws of inheritance are-:i. Law of dominance: When two homozygous individuals with one or more sets of contrasting characters are crossed the characters that appear in the F1 hybrids are dominant characters.ii. Law of segregation: Contrasting characters brought together in a hybrid remain together without being contaminated and when gametes are formed from the hybrid the two separate from each other and only one enters each gamete.iii. Law of independent assortment: In inheritance of more than one pair of contrasting characters simultaneously, the factors for each pair of characters assort independently of other pairs. | |
| 58811. |
Which gases gives pop sound |
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Answer» Hydrogen Hydrogen |
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| 58812. |
why does diamond giltter ?? |
| Answer» Cuz y not | |
| 58813. |
Whay do you mean by water of crystalisation? |
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Answer» water molecules forming an essential part of the crystal structure of some compounds. Adding water or having reaction with water |
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| 58814. |
Frnds... tell me seminal vessel |
| Answer» | |
| 58815. |
Fruits and its acids |
| Answer» Apple- Malic acid. , Orange/lemon-- citric acid. | |
| 58816. |
Wh does stars twinkle?? |
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Answer» The twinkling of a star is due to atmospheric refraction of starlight. The starlight, on entering the earth’s atmosphere, undergoes refraction continuously before it reaches the earth. The atmospheric refraction occurs in a medium of gradually changing refractive index. Because of atmospheric refraction |
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| 58817. |
What are fossils? How it is formed? |
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Answer» Fossils are dead remains of animals and plants from remote past.Fossils are formed when dead organisms are not completely decomposed. The organisms may get trapped in resins of tree, lava of volcanoes or hot mud, which when hardens retains the animal’s parts thus forming fossils.Two methods of determining the age of fossils are:\tRelative method: By estimating the age of the layer of earth’s crust where the fossil is found. Fossils near the surface are recent and those in the deeper layers are more ancient.\tRadio-carbon dating method: By detecting the ratios of different isotopes of carbon in the fossils. When plants and amimals die there body gets turn into fossils by baceria and microorganisms and it increase the fertility of the soil |
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| 58818. |
What is darwin theory |
| Answer» Darwinian theory of EvolutionAccording to Darwin, evolution took place by natural selection.The number of life forms depends upon their life span and their ability to multiply.Another aspect of natural selection is the survival of the fittest where nature selects the individuals, which are most fit to adapt to their environment.An example of such a selection is the antibiotic resistance in bacteria. When a bacterial population was grown on an agar plate containing antibiotic penicillin, the colonies that were sensitive to penicillin died, whereas one or few bacterial colonies that were resistant to penicillin survived. This is because these bacteria had undergone chance mutation, which resulted in the evolution of a gene that made them resistant to penicillin drug. Hence, the resistant bacteria multiplied quickly as compared to the non-resistant (sensitive) bacteria, thereby increasing their number. Hence, the advantage of an individual over the other helps in the struggle for existence.\xa0Darwin also observed that variations are inheritable and the species fit to survive the most leaves more offsprings. Hence, the population’s characteristics change, giving rise to the evolution of new life forms.The two key concepts of the theory are:(1) Branching descent: According to this concept, various species have come into existence from a common ancestor.(2) Natural selection: According to this concept, nature selects the individuals, which are most fit to adapt to their environment. | |
| 58819. |
Name the component of sunlight which facilitates drying of wheat after harvesting |
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Answer» Heat Infra red |
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| 58820. |
Name the family and order to which man belongs |
| Answer» ?????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????❤??????❤?????????☝???✊✌✋?☝???????✌⌚????????⌚??????????????????????????????????????????????????????????????????????????☕????☕????????????????????????????????????❄??????????????????????????????⛪⛲????????⚓??????????????⛳⚾⚽??⚽??????????????????????????Ⓜ??????????????????????????✈????⛵?????????⛽?????????♨???????⏳⌛⏰♈♉♊♊♋♌♌⏰♎♏♑♒⛎⛎??????????????➿??♻??⛔???????♿????????????????㊙?➕✴?✔✅㊗⭕❌ℹ?????➗✖?????????? | |
| 58821. |
Set 2 ke questions |
| Answer» ?? | |
| 58822. |
How to prevent air pollution? |
| Answer» | |
| 58823. |
list two types of transport system in human beings and write the function of any one of these |
| Answer» Blood circulatory system, and lymphatic system.....function of blood circulatory system:......to circulate and transport nutrients (such as amino acids and electrolytes), oxygen, carbon dioxide, hormones, and blood cells to and from the cells in the body to provide nourishment...... | |
| 58824. |
Any two limitation of extracting of wind energy |
| Answer» *The minimum wind speed necessary for satisfactory working of a wind generator is 15 km/h, that is always so........ *The setting up of wind energy farm is very expensive. | |
| 58825. |
cbse class 10 science answer key 2019 set 3 code number 31/3/3? |
| Answer» | |
| 58826. |
The absolute refractive index of ruby is 1.7 find the speed of light in ruby |
| Answer» Speed of light in ruby = 5.6 × 10^9 | |
| 58827. |
What is the use of iodised salt advisable? |
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Answer» Tyroid gland requires iodine for the secretion of tyroxine hormone to control metabolism of carbohydrate,fat and protien Iodised salt is advisable to help reduce the chance of iodine deficiency (thyroid gland) in human. To get rid of thyroid and for proper action of thyroid gland. |
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| 58828. |
Solution of science exam papers 2019set-2 |
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Answer» 3??? Bhai yha pr nhi bhej sakte isliye pls google kar li? |
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| 58829. |
Plant hormone that cause cell division in fruits and seeds |
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Answer» Cytokinin Cytokinin Cytokinins Cytokinins |
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| 58830. |
Can anyone tell me answer of question 25 paper science set 1 code no 31/4/1 |
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Answer» Part 1 current =38mA Voltage= 3.2V How correct answer is C C option is correct Option c How i can send that question paper photo to you There were four diagram and i have to chose one with an voltmeter, ammeter and resistance What was the question |
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| 58831. |
What is manpose |
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Answer» Menopause happens in all elder women’s, between the age of 40s to 50s and may also vary. The main cause for the Menopause is the female *** hormone levels, which naturally reduces along with the age and eventually ovaries stop releasing the eggs. Therefore, women’s in this phase are no longer have periods or be able to get pregnant. . When After 45-50 years a human female unable to give birth to Young once is called menopause. ?? |
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| 58832. |
what is momentum? |
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Answer» We can define momentum as the quantity of motion of the body. It is measured by p=mv Momentum is the product of mass and velocity. |
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| 58833. |
What is parthogenesis |
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Answer» Parthenogenesis is the method of obtaining a fruit even though the fertilisation does not take place. This is not to be considered as asexual reproduction. Parthenogenesis is a sort of unisexual reproduction involving one parent either with genital organs of single *** or the gametes produced are sterile so that there is no production of viable seeds. Unfertilised ovary develops into fruit.*Parthenogenesis helps in the production of seedless fruits.*In organisms like honey bees and wasps, males develop by the method of parthenogenesis.Some reptiles also have the capability of reproducing by parthenogenesis.\xa0 It is a natural form of asexual reproduction in which growth and development of embryos occur without fertilization. Bt apka answer le lo......???? Yr ab or science nhi hoga...... ? Koi problem Yes Abhi bhi science? |
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| 58834. |
Science set 1 code no 31/4/1 questions no 25 . Answer plz |
| Answer» | |
| 58835. |
What is the colour of copper sulphate,iron sulphate |
| Answer» Copper sulphate is blue in colour and, iron sulphate is green in colour | |
| 58836. |
What is the chemical effect of electric current |
| Answer» When electric current is passed through a conducing solution, some chemical reaction takes place in the solution. This is called chemical effect of electric current. Some of the chemical effects of electric current are as follows:\tBubbles of gas may be formed at electrodes.\tDeposits of metal may be seen on electrodes.\tChange of colour of solution may occur. | |
| 58837. |
What are components of the electric current |
| Answer» The main components of an electric circuit are...*Battery.....*Switch....*Connecting wires.....*LED bulb...... | |
| 58838. |
What is the function of blood vessels |
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Answer» The blood vessels are part of the circulatory system and function to transport blood throughout the body. The most important types, arteries and veins, carry blood away from or towards the heart, respectively. All blood vessels have the same basic structure. Trawiling of blood |
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| 58839. |
रस...समास...वाच्य...वाक्य भेद...औऱ कुछ तो नही आरहा ना...??? |
| Answer» Hindi mein post karo na .. | |
| 58840. |
State whether voltmeater\'s resistance is high or low.Give reason. |
| Answer» High | |
| 58841. |
This year ; which set was more easy of science paper as compared to others ??????? |
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Answer» Kanpur Yah you are right 1st easy tha, bt 3rd was most tough ?... bt overall it was gd......? 3Rd is very tuff Okk ; but most of the students are saying that 1 is more easy 2 |
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| 58842. |
Resistance depend on what???? |
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Answer» Defination is here.........The resistance (R) of a material depends on its length, cross-sectional area, and the resistivity.And number that depends on the material: The resistivity and conductivity are inversely related. cross section..and length |
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| 58843. |
What are advantages of of vegetative reproduction in plants |
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Answer» Advantages:(i) Bear flowers and fruits earlier than those produced from seeds.(ii) Plants without seeds can also reproduce.(iii) Genetically similar to the parent plant.(iv) The flowers produced are of a superior quality.(v)Certain desirable characteristics present in the fruit can be maintained. 1. Plants that do not produce seeds can reproduce this way. 2. Since only one plant is required, pollination is not needed. 3. It is a fast method of reproduction.4. Plants with desirable characteristics can be propagated easily because the offspring are exact copies of their parents. |
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| 58844. |
Write about the electronic |
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Answer» Ye electron hi..likha h..n one of the three types of particles that form all atoms. Electrons have a negative electric charge |
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| 58845. |
What is the difference between homologous and analogous animals? |
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Answer» \tHomologous StructureAnalogous StructureSimilar anatomyDissimilar anatomyDissimilar functionsSimilar FunctionsInherited from a common ancestorNot inherited from ancestorsDevelops in related speciesDevelops in unrelated speciesA result of divergent evolutionA result of convergent evolutionDeveloped as a result of the adaptation to a different environmentDeveloped as a result of the adaptation to a similar environmentAn arm of a human, the leg of a dog or a flipper of a whale are all homologous structuresFrom wings in birds, bats and insects to fins in penguins and fishes are all analogous structures\t Homologous Structures have similar morphology, embryology and anatomy etc. but are dissimilar in their functions. ... Analogous structures are those structures in different species which perform the same function, have similar appearance and structure but are not evolved together; therefore do not share a common ancestor. |
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| 58846. |
Structural formula of neo pentane |
| Answer» Neopentane means the compound having 5 carbon atom with two or more\xa0branched chains.The molecular formula of neopentane is same as the formula for pentane that is C5H12.But its structural formula can be written as C(CH3)3. | |
| 58847. |
Define one volt |
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Answer» It is represented by V... V=W/Q The Potential difference between two points in an electric field is said to one volt if one joule of work has to be done in bringing a positive charge of one coulomb from one point to another.1 volt = 1 joule/1 coulombor1 V = 1J/1C When one joule of work is done in moving a one unit charge from one point to another, potential difference is said to be one volt......... |
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| 58848. |
Concave lens length 20cm decreased to one third find object distance |
| Answer» | |
| 58849. |
How the science paper goes |
| Answer» Average...ur | |
| 58850. |
Plz tell me the difference between electric potential and electric potential difference.. |
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Answer» No actually i have just cleared my 9th class and i have been preparing for 10th class now☺ electric potential difference is defined as the amount of work done in moving a unit charge from one pt. to another electric potential is defined a the work done in moving a unit positive charge from infinity to vicinity Science paper is over so why are you studying it still?? |
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