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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.
| 44701. |
What is newland law os octave |
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Answer» Law of octaves:- when elements are arranged in asending order , he found that every eight element had similar properties to first one The 8th element properties are same as of first element........ |
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| 44702. |
Why does the embryo get nourishment inside the mother\'s body? |
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Answer» So that embryo would get nutrients Embryo get nourishment with a special tissue called planceta. Exchange of gases,waste material from baby takes place through planceta And it\'s done by plancenta...... For the development of the foetus......... |
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| 44703. |
What is molecular progeny |
| Answer» Progeny is the way which disperses piece of the parential molecule over large numbers of the. progeny DNA molecule | |
| 44704. |
to show experimentally that co2 is given out during respiration |
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Answer» C6H12O6 +6O2------------->6CO2 + 6H2O +heat energy C6H12O6+6O2---------->6CO2+6H2O+energy |
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| 44705. |
What is emulsification????? |
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Answer» Emulsification also makes the compound alkaline Breakdown of big fat globules by the bile salts for the action of enzymes. |
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| 44706. |
What is electric fuse |
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Answer» It is a device which is used to prevent electri circuit from overloading and short circuiting Electric fuse is a wire that is used to protect the electric circuit from overloading and short circuiting electric fuse are made of the alloys which have low melting point and the excess current pass through the fuse it become burn and circuit will break An electric fuse is a safety device used to limit the current in an electric circuit. The use of a fuse is to safeguard the electric circuit and the electric appliances connected in the electric circuit from being damaged. A fuse is a short piece of wire made up of a material of high resistivity and of low melting point, So that it may easily melt due to overheating due to the excessive flow of electric current.\xa0The thickness of the fuse wire is different in different fuses depending on the amount of current which is permitted to flow through them. Generally an alloy of tin and lead is used as the material of the fuse wire as it has high resistivity and low melting point.\xa0Usually the fuse wire is a thin wire to be the resistance of the fuse wire is much more than that of the live wire. |
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| 44707. |
Which is saturated hydrocarbon oil or ghee?? |
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Answer» Ghee Vanaspati ghee is a fully and partially hydrogenated vegetable oil which means these are saturated hydrocarbons\xa0with carbon-carbon\xa0single bond. Ghee Gher Ghee |
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| 44708. |
Which carbon compound is harmful saturated or unsaturated? |
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Answer» Unsaturated is harmful because it is very reactive than saturated Unsaturated because they are are very reactive Unsaturated i think so |
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| 44709. |
What is optic fibre? |
| Answer» Optical fiber is the technology associated with data transmission using light pulses travelling along with a long fiber which is usually made of plastic or glass. Metal wires are preferred for transmission in optical fiber communication as signals travel with fewer damages. Optical fibers are also unaffected by electromagnetic interference. The fiber optical cable uses the application of total internal reflection of light. The fibers are designed such that they facilitate the propagation of light along the optical fiber depending on the requirement of power and distance of transmission. A single mode fiber is used for long-distance transmission while a multimode fiber is used for shorter distances. The outer cladding of this fibers needs better protection than metal wires. | |
| 44710. |
What is 10percent law?? |
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Answer» according to this law ,during the transfer of energy from organic food from one trophic level to the next only about from organic matter is strong as flesh.???☺☺ For example......sun(10000%)-------plant(1000)-----goat(100%)------lion(10%) 10 percent law was given by raymond lindeman.According to this rule the energy available for successive level is 10 percene of preceding level. during the transfer of energy from organic food from one trophic level to the next, only about ten percent of the energy from organic matter is stored as flesh.Jo animal dusre animals ko..khaate hai..to sirf 10 percrnt energy hi..khane wale animals ke pass jaati hai It is a cycle in which autotrophs take 1% of suns energy and when herbivores eat them they get its 10% and then small carnivores get 10% of it and big carnivores or superior ones get its 10%. The Ten percent law of transfer of energy from one trophic level to the next was introduced by Raymond Lindeman (1942). According to this law, during the transfer of energy from organic food from one trophic level to the next, only about ten percent of the energy from organic matter is stored as [email\xa0protected] |
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| 44711. |
Explain the different ways to induce current in coil |
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Answer» Thanks Electric current can be induced in a coil due to the relative motion between the coil and a magnetic field.There are two ways to do so.1. Inducing current on a coil by moving the coil in a magnetic field2. Inducing current on a coil by by changing the magnetic field across it.3. By taking two cunductiong coils and insert them over a non conducting cylindrical roll then on changing current flowing in one coil, an induced current is obtained in the other coil. By moving a magnet towards a coil |
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| 44712. |
How magnetic field additive in nature? |
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Answer» This is right questions I am sure Plz check the question again? |
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| 44713. |
What is aromatic compounds |
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Answer» Aromatic compounds ,also knows as arenes or aromaties are chemical compounds that contain conjugated planar ring systems with delocalized pielecteon cloud instead of discrete alternating single and double bonds. Aromatic compounds are substances that consist of one or more rings that contain alternating single and double bonds in its chemical structure.example: benzene |
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| 44714. |
What do you mean by magnitude and directions ? As per magnetic fields |
| Answer» | |
| 44715. |
Plants and human hormones ? |
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Answer» Auxin, gebberellins, cytokinines, absiccs acid are plant harmone while growth hormone testosterone, oestrogen , adrenaline etc are human harmone Refer your NCERT as well as you can refer any other book for this topic because it is very long to tell here....... |
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| 44716. |
What happens during chemical reaction? |
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Answer» During a chemical reaction substances with new physical and chemical properties are formed...... like, formation of, precipitate, evolution of gas, change in state.... e.t.c..... During a chemical reaction new substance with new properties forms.......... with some changes like change of colour change in state evolution of gas etc...... |
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| 44717. |
Write Laws of refraction |
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Answer» The second law is also known as snell\'s law *The incident ray, refracted ray and normal to the interface of given two transparent media, all lie in same plane......... *The ratio of sine of angle of incidence and sine of angle of refraction is always constant for the light of given colour and for the pair of given media..... Refer your NCERT |
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| 44718. |
state fleming,s right hand rule |
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Answer» Stretch the forefinger , the middle finger , and the thumb of your right handmutually perpenficular to each other . Then if the thumb reprentes the directio of motion of co nductor force and forefinger, the direction of magnetic field , then the middle finger gives the direction of induced current. Strech the thumb ,forefinger,middle finger of right hand so that they are prependicular to each other .lf fore finger indicates the direction of motion of conductor ,the thumb show the direction of motion of vonductor,the middle finger wiL show the direction of induced current.Draw diagram from book. It is in book |
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| 44719. |
Precipatation |
| Answer» The reaction in which PPT is formed is known as precipitation reaction...... | |
| 44720. |
Define couloumb |
| Answer» Current carried by 1 ampere in 1 second or simply it is si unit of charge | |
| 44721. |
What is restivity ? |
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Answer» Ye to resistance ka hi answer Resistivity of a conductor is numerically equal to resistance of a conductor of length 1 metre and 1 m^2 cross sectional area The property of material of conductor to resist the flow of electrons is known as resistivity. |
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| 44722. |
define systolic and distolic pressure |
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Answer» Thnks Systolic-the maximum pressure at which blood leaves the heart through main artey aorta during contraction phase is known as systolic pressure.Distolic-the minimum pressure in the artery during relaxation phase is known as diastolic pressure.. Systolic pressure refers to blood pressure during the contraction. Whereas, diastolic pressure refers to blood pressure during uncontraction. |
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| 44723. |
Pls tell me important topics for board????? |
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Answer» Everything is important Har cheez important hai Everything part r important....... |
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| 44724. |
Koi darwins theory bataega kyaa ???? |
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Answer» Vo crow or beetle wala experiment hai na vo Darwin ne kara tha usko book mai se padh lo Natural selection is the phenomenon wherein nature, in the wild, selects the traits favourable to the species. Okay... Thanks Yeah sureDarwin was a very famous scientist of his time. He travelled to the gelapogous island near south america with his team. After return to his native land he wrote a book named as "ORIGIN OF SPIECIES". In this book he gave two theories one is NATURAL SELECTION and another is SURVIVAL OF THE FITTEST. According to him everyone is selected by nature and in next theory he explained that the fittest one can easily continue with this environment. So we all are natural selected and fittest. Darwin\'s theory of natural selection. |
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| 44725. |
Pls tell me the ans for table 2.1 pg 18 ch2 |
| Answer» Kyu | |
| 44726. |
Two lamps, ine rated 10w |
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| 44727. |
Plss koi mahan yaha hai jo imp. bataega boards k liye |
| Answer» Practical questions, daigrams, long questions and numericals | |
| 44728. |
Where are ncert question answers |
| Answer» U can go to any reference book and mcq k ans. apko page no. 280 pr hai | |
| 44729. |
Why should a magnesium ribbon be cleaned before burning the air |
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Answer» To remove its protective layer Cuz it gets oxidised in air n get coating of an oxide layer |
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| 44730. |
Experimently show that the metals are good conductor of heat? |
| Answer» Schand ki book me metal and non metal ke chapter me hai | |
| 44731. |
Skeletal equation |
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Answer» Unbalanced chemical equation is also known as skeletal equation. Describe the Structure and funtioning of nephrons |
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| 44732. |
Is Ester Hydrolysis and Saponification same? If not what is the difference between them? |
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Answer» No Ya they are same |
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| 44733. |
On what factors angle of emergence depends? |
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Answer» No, that is lateral displacement ● angle of incidence ● width or thicknes of the glass slab |
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| 44734. |
What is heart and function |
| Answer» Human heart is a muscular organ situated in the centre of the thoracic cavity with its lower end tilted towards left. It consists of four chambers - two auricles which receive blood and two ventricles which pump blood to different parts of the body.\xa0Structure of Human Heart\tThe heart is a muscular organ covered by a double membrane called pericardium.\tThe pericardial fluid of the pericardium lubricates the heart.\tThe heart is divided into four chambers — two upper atria and two lower ventricles.\tThe inter-atrial septum separates the two atria and the inter-ventricular septum separates the two ventricles.\tThe atrium and the ventricle of each side are separated by the atrioventricular septum.\tSuperior and inferior vena cavae open into the right atrium.\tThe right ventricle opens into the pulmonary artery.\tFour pulmonary veins open into the left atrium.\tThe left ventricle opens into the aorta.\tThe opening between the right atrium and right ventricle is guarded by the tricuspid valve.\tThe opening between the left atrium and left ventricle is guarded by the bicuspid (mitral) valve.\tThe opening of the right ventricle into the pulmonary artery and the opening of the left ventricle into the aorta is guarded by the semilunar valves.Working of Heart\xa0The right atrium receives blood from the upper and lower body through the superior vena cava and the inferior vena cava, respectively, and from the heart muscle itself through the coronary sinus. The right atrium is the larger of the two atria, having very thin walls. The right atrium opens into the right ventricle through the right atrioventricular valve(tricuspid), which only allows the blood to flow from the atria into the ventricle, but not in the reverse direction.The right ventricle pumps the blood to the lungs to be reoxygenated.The left atrium receives blood from the lungs via the four pulmonary veins. It is smaller than the right atrium but has thicker walls. The valve between the left atrium and the left ventricle, the left atrioventricular valve(bicuspid), is smaller than the tricuspid. It opens into the left ventricle and again is a one-way valve.The left ventricle pumps the blood throughout the body through the aorta, which\xa0is the\xa0largest artery in the body. The walls of the left ventricle are the thickest among all the chambers.\xa0\xa0 | |
| 44735. |
What is electrolytic reduction of copper |
| Answer» Electrolytic refining is the most widely used method for refining impure metals.For electrolytic refining of copper,electrolyte is a solution of acidified copper sulphate. The anode is impure copper, whereas, the cathode is a strip of pure copper. On passing electric current, pure copper is deposited on the cathode. | |
| 44736. |
What does 2ba(Oh)2 + nh4cl gives |
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Answer» Thanks I guess the equation is this:Ba(OH)2\xa0+ 2NH4Cl → BaCl2\xa0+ 2NH3\xa0+ 2H2OThis is an endothermic reaction.In this reaction when barium hydroxide is mixed with ammonium chloride it forms barium chloride, ammonia and water.\xa0 Ba(OH)2 + 2 NH4Cl--------> BaCl2 + 2H20 + 2NH3 Is this answer is correct It gives 2BaCl2+NH4OH |
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| 44737. |
What are ethers |
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Answer» a pleasant-smelling colourless volatile liquid that is highly flammable. It is used as an anaesthetic and as a solvent or intermediate in industrial purposes. Hope it is helpful I never hear this word I am asking ethers not ester Esters are organic compounds formed by reactions of alcohol with carboxlic acids. |
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| 44738. |
Name the bacteria which cause maleria and who produce this bacteria ? |
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Answer» Female aneopheles Plasmodium |
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| 44739. |
Fifth class scince c.p 14 |
| Answer» Source of energy | |
| 44740. |
How to know positions of elements in periodic table? |
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Answer» By electronic confrigation 1-The periods of elements relates the number of shell of an atom of given elements 2-The groups is similar to the number of valence electron of given elements To know the position of elements in periodic table use electronic configration.Valence electron give group no. and valence shell give period no |
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| 44741. |
Is iron oxide amphoteric in nature?? |
| Answer» Yes | |
| 44742. |
To make a flowchart for chapter 1 chemical reactions and equations |
| Answer» | |
| 44743. |
Rex. Of cuo(s) + H2 (g) -> |
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Answer» Ans. Is wrong . In the book evergreen ans. Is Cu + H2O Cu+H2o |
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| 44744. |
Explain why, alkanes are excellent fuels. |
| Answer» Alkanes are saturated hydrocarbons and they burn readily in air with a blue non-sooty flame to produce a lot of heat and light energy. This heat energy can be used for heating water, cooking food and operating machines in factories and generators in thermal power station. That is why alkanes are called excellent fuels. | |
| 44745. |
Describe various paths of glucose cracked down in our body |
| Answer» Glucose is break down by different ways one of them is through respiration.Another paths are by working out.These all are the reason for the break down of glucose. | |
| 44746. |
How do variations ensure the survival of a species? Explain with an example? |
| Answer» Variations upgrade the body designs and the habits of the species , which helps the next generation of that single species to sustain even in adverse situation . e.g., variations came into the species of giraffe very earlier , after that the offsprings were started to have very long necks . | |
| 44747. |
What is detergent |
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Answer» Detergents are ammoOr sulphate salt of carboxylic acid(fatty acids) Detergents are the sodium salts of long chain benzene sulphonic acids or long chain alkyl hydrogensulphates. Detergents have almost the same properties as soaps but they are more effective in hard water.\xa0Detergents are generally ammonium or sulphonate salts of long chain carboxylic acids. The charged ends of these compounds do not form insoluble precipitates with the calcium and magnesium ions in water. Detergents are the sodium and potassium salt of sulphonate (so3) group attached to long chain of carbon. Chemical liquid & powder that its cleaning things. |
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| 44748. |
Detergent |
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| 44749. |
Here..anybody use facebook |
| Answer» | |
| 44750. |
CBSE science board weightage |
| Answer» Of chapters | |