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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.
| 1. |
common salt conduct electricity only in molten state why |
| Answer» In order to conduct electricity a substance must have charge particles, such as electrons and ions, that are free to move freely through it. In the solid state, ionic compounds such as sodium chloride have their ions fixed in position and therefore these ions cannot move so solid ionic compounds cannot conduct electricity. However in the molten state, ions in ionic compounds are free to flow and therefore molten sodium chloride can conduct electricity. | |
| 2. |
What are most common methods of artificial vegetative progration? |
| Answer» Artificial methods of vegetative propagation include grafting, layering, cutting.\xa0a) Grafting involves fusion of tissues of one plant with those of another plant. Grafting is a vegetative method of propagation for apples and roses.The grafted plant consist of a scion and rootstock. Scion is the upper part of grafted plant that forms the shoot where the rootstock is the lower portion of the grafted plant which forms the roots.Scions are selected for good characteristics such as flowers, fruits where rootstocks are selected as the plant benefit through the efficient intake of nutrients from soil as well for disease, pest and drought resistence.In root stock grafting scion of desired plant\xa0is inserted to a rootstock by making an inward cut\xa0in the rootstock and sealing the graft area.Layering: This involves bending of a young stem towards the ground and burying it under the soil for development of roots . After a period of time, as the roots develop, the bent stem is cut off from the parent plant. This acts as a new plant. e.g. Jasmine. Cutting: It involves planting a young cutting of the stem with buds into moist soil. This develops roots which absorb nutrition from the soil and help in the growth of new plant. e.g. Bougainvellia.\xa0Cutting: It involves planting a young cutting of the stem with buds into moist soil. This develops roots which absorb nutrition from the soil and help in the growth of new plant. e.g. Bougainvellia. | |
| 3. |
what does phone camera gives us what image in front and back camera in today\'s phone |
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| 4. |
What is Oogenesis? |
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Answer» Google se to vo bhi search mar leta Oogenesis is the production of egg cells inside the ovaries. During foetal development, few germinal cells in human ovary differentiate and divide mitotically to produce egg mother cell/oogonia. Further, oogonia become larger and divide to produce diploid primary oocyte. In follicular prenatal phase, the primary oocytes start first meiotic division but are transitionally suspended into prophase stage of meiosis I and are stored in the follicle. After puberty, primary oocyte resumes the division and completion of first meiotic division produce one secondary oocyte (egg cell) and one polar body (non-functional cell). |
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| 5. |
IDENTIFYING FUNCTIONAL GROUPS:HALO ALCOHOLALDEHYDEKETONECARBOXYLIC ACIDDOUBLE BOND,TRIPLE BOND |
| Answer» Aldehydes and ketones are\xa0organic compounds\xa0which incorporate a\xa0carbonyl\xa0functional group,\xa0C=O. The carbon atom of this group has two remaining bonds that may be occupied by hydrogen or\xa0alkyl\xa0or\xa0aryl substituents.\xa0In organic chemistry, a\xa0carbonyl group\xa0is a functional group which has a carbon double bonded to an oxygen atom:\xa0C=O.\xa0R\xa0means “Radical\xa0Group”\xa0meaning\xa0any\xa0group\xa0in which a carbon or hydrogen atom is attached to the rest of the molecule. It substantially indicates an organic chain deprieved of its\xa0functional group.\xa0R\xa0can be CH3- (methylic\xa0group) or CH3-CH2- (ethylic), or an aromatic C6H5- (phenzylic\xa0group), or whatever. | |
| 6. |
Explain why, diamond is hard while graphite is soft (though both are made of carbon atoms). |
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Answer» ?? Graphite is soft because it has weak inter molecular forces between its layers.Diamond is hard due to its giant covalent lattice and it has many strong covalent bonds. Hoe it helps u |
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| 7. |
What is the function of our nervous system? |
| Answer» The nervous system or the neural system is a complex network of neurons specialized to carry messages.\xa0The complexity of the nervous system increases as we move towards higher animals.For instance, cnidarians such as jellyfish have relatively simple nerve nets spread throughout their body. Crabs have a more complicated nervous system in the form of 2 nerve centers called dorsal ganglion and ventral ganglion.As we move further up the ladder, higher organisms such as vertebrates have a developed brain. Moreover, it is one of the most complicated structures in the animal kingdom, containing billions of neurons, all intricately connected.In the human body, the neural system integrates the activities of organs based on the stimuli, which the neurons detect and transmit. They transmit messages in the form of electrical impulses and convey messages to and from the sense organs. Thus, the nervous coordination involves the participation of the sense organs, nerves, spinal cord, and brain. | |
| 8. |
Hlo Plz tell me how to share a answer in this homework help ...Please btao na |
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Answer» Muje bi pta nahi Pta nhi yar Table type questions matlab Yeah toh mereko ko bhi pta hai lekin... but maine kafi bacho ko table type questions bhi share kiya hai but woh kaise kiya unhone .. kya apko pta hai?? When u will press the question u will get Type your answer option (below). press that option and type your answer. After typing send ur answer through send option (right side arrow option) . then your answer will be shared. |
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| 9. |
what is a symbol of an electric bulb |
| Answer» Symbol of following\xa0\xa0 | |
| 10. |
How motor works?? |
| Answer» Electric MotorElectric Motor is a device which converts electrical energy into mechanical energy.Principle of Electric MotorThe principle of the electric motor is based on the fact that a current carrying conductor produces a magnetic field around it.\xa0A current carrying conductor placed perpendicular to magnetic field experiences a force.Construction of Electric Motor(1) Armature coilIt consist of a single loop of an insulated copper wire in the form of a rectangle.(2) Strong field magnetArmature coil is placed between 2 pole pieces of a strong magnet which provide strong magnetic field.(3)\xa0Split ring type commutatorIt consist of 2 halves of a metallic ring.The two ends of armature coil are connected to these 2 halves of ring.Commutators reverses the direction of current in armature coil.(4) BrushesTwo carbon brushes press against the commutator.These brushes act as contact between commutator and terminal battery.(5) BatteryIt is connected across the carbon brushes.It supplies current to the armature coil.Working of Electric Motor1)In the side AB of the rectangular cil ABCD, the direction of current is from A to B and in the side CD of the coil, the direction of current is from C to D.The direction of magnetic field is from N pole of the magnet to its S pole.2) Applying Fleming’s Left hand rule to sides AB and CD of the coil, the force on side AB of the coil is in downward direction whereas the force on side CD of the coil is in upward direction. Due to this the side AB of the coil is pushed down and side CD is pushed up.This makes the coil ABCD rotate in the anticlockwise direction.3) While rotating, when the coil reached vertical position, then the brushes will touch the gap between the two commutator rings and current of the coil is cut off. Though the current to the coil is cut off when it is in the exact vertical position, the coil does not stop rotating because it has already gained momentum due to which it goes beyond the vertical position.4) After half rotation, when the coil goes beyond vertical position, the side CD of the coil comes on the left side whereas side AB of the coil comes to the right side, and the two commutator half rings automatically change contact from one brush to the other.5) After half rotation of the coil , the commutator half ring R2\xa0makes contact with brush B1\xa0whereas the commutator half ring R1\xa0makes contact with brush B2.This reverse the direction of current in the coil.6) The reversal of direction of current reverses the direction of force acting on the sides AB and CD of the coil.The side CD of the coil is now on the left side with a downward force on it whereas the side AB is now on the right side with an upward force on it.Due to this the side CD of the coil is pushed down and the side AB of coil is pushed up.This makes the coil rotate anticlockwise by another half rotation.7) The reversing of current in the coil is repeated after every half rotation due to which the coil continue to rotate as long as current from the battery is passed through it. | |
| 11. |
What are the chemical properties of metal and non-metals ? ..... Plz..answer this question |
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Answer» The chemical properties of metals.\tThe density of metals is usually high.\tMetals\xa0are malleable and ductile.\tMetals form an alloy with other metals or non – metals.\tSome metals react with air and\xa0corrode. For e.g. Iron.\tMetals are good conductors of heat and electricity.\xa0Lead\xa0is an exception.\tGenerally, metals are in a solid state at room temperature. Except for Mercury. Mercury is in a liquid state.The chemical properties of nonmetals\tNonmetals are poor conductors of heat and electricity. Graphite and Gas carbon are exceptions.\tUnlike metals, nonmetals aren’t malleable and ductile.\tNonmetals react more with metals than with nonmetals.\tUsually, nonmetals react with other nonmetals in high temperature.\tMost nonmetals do not react with air in room temperature.\tWhite phosphorus is the only nonmetal that reacts with air to form its oxide by burning. Metals soluble, malleable,ductile,hard,shiny, change in thin **** by hit And nonmetals are opposite of metals |
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| 12. |
Name the metal which is poor conductor of heat |
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Answer» Dubara padh Dimaag kharaab hai tera Lead (pb). Na,K. are metals but does not conduct electricity Hey! Steel is the poorest conductor of heat |
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| 13. |
Name the main ore of mercury. How is mercury obtained from its ore? |
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Answer» Thanks Yogita Mercury is obtained from its sulphide ore called cinnabar, HgS which is actually mercury(ii) sulphide.The following steps are involved in its extraction:1. mercury ore is roasted2HgS(s) + 3 O2 (g) -----> 2HgO (s ) + 2 SO2 (g)2. when this mercury oxide is heated at about 300 degrees Celsius , it decomposes to form mercury metal.2HgO (s) ------> 2Hg (l) + O2(g) |
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| 14. |
largest artery of bosy |
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Answer» *Aorta* The largest artery in the body is the aorta, which is connected to the heart and extends down into the abdomen . The aorta has high-pressure, oxygenated blood pumped directly into it from the left ventricle of the heart. The largest artery in the body is the aorta, which is connected to the heart and extends down into the abdomen (Figure 7.4. 2). The aorta has high-pressure, oxygenated blood pumped directly into it from the left ventricle of the heart. ?AORTA? HoPe It HeLpS yOu?? |
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| 15. |
Difference between saturated and unsaturated carbon |
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Answer» Saturated carbon has single bond while unsaturated carbon has more bond \tSaturated hydrocarbonsUnsaturated hydrocarbonsSaturated hydrocarbons are the compounds containing only single covalent bonds. These are also known as alkanes.\xa0Unsaturated hydrocarbons are the straight chain compounds containing double or triple covalent bonds. Hydrocarbons with a double bond between carbon atoms are known as alkenes.\xa0Hydrocarbons with triple bonds between carbon atoms are known as alkynes.\xa0These compounds have more number of hydrogen atoms when compared to its corresponding unsaturated hydrocarbons.These compounds have less number of hydrogen atoms when compared to its corresponding unsaturated hydrocarbons.These compounds are less reactive.These compounds are more reactive.These compounds under go substitution reactions. CH4\xa0+ Cl2\xa0\xa0→ CH3Cl + HClThese compounds under go addition reactions. Ex: CH2=CH2\xa0+ H2\xa0→ CH3\xa0- CH3Saturated hydrocarbons burns with blue flameUnsaturated hydrocarbons burns with sooty flame\t\xa0 Saturated carbon has only single bond while unsaturated can be formed double and triple bond. |
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| 16. |
What is the full form of CFL?? |
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Answer» Compact Fluorescent Lamp is the full form of CFL ?Compact Fluorescent Lamp/Light? HoPe It HeLpS yOu?? Compact Fluorescent lamp A compact fluorescent lamp (CFL), also called compact fluorescent light, energy-saving light and compact fluorescent tube, is a fluorescent lamp designed to replace an incandescent light bulb; some types fit into light fixtures designed for incandescent bulbs. |
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| 17. |
The resistance of the conductor is R. If its length is doubled, then its new resistance will be? |
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Answer» Original:Resistance = RLength = lArea of cross section = aResistivity = rhoR = rho * l ÷ aNew :Length = 2lArea = a/2R= (rho * 2l ) / a/2R= 2( rho * 2l) /aR= 4 ( rho * l) /aR = 4 times original resistance The new resistance will be 2r , as length and resistance are directly proportional to each other...I guess you must have understoodOk The new resistance will be 2r , as length and resistance are directly proportional to each other...I guess you must have understood... The New resistance will be 2R , BECAUSE Wkt , R directly proportional to length of wire(it is in resistivity relation) so, if L is doubled then the new R will also be double as same.That\'s my answer , it would be wrong,Sorry. New resestance will be 4r.??? |
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| 18. |
State the colour of phenolphthalein in soap solution. |
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Answer» Thank,s??????? Pink colour as soap solution is basic in nature Phenolphthalein is often used as an indicator in acid-base titrations. It is slightly soluble soluble in water. It turns acidic in acidic solution and turns pink in basic solution. Since soap solution is basic, so phenophthalein turns pink in pink solution. When we add phenolphthalein in soap solution it turn into pink colour Pink |
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| 19. |
How make photosynthesis formula. |
| Answer» 6CO2+6H2O+energy ---->C6H12O6+6O2 | |
| 20. |
IUPAC Nomenclature notes/PDF |
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| 21. |
Please like and share with your friendshttps://youtu.be/aTyhq8Ir6HE |
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| 22. |
What is brine.? |
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Answer» Aqueous solution of NaCl NaCl other name Brine is the aqueous solution of Sodium Chloride i.e. NaCl Brain is an amazing three-pound organ that controls all functions of the body. Brine\xa0is a solution of sodium chloride (NaCl) and water (H2O). The electrolysis of\xa0brine\xa0is a large-scale process used to manufacture chlorine from salt. Two other useful chemicals are obtained during the process, sodium hydroxide (NaOH) and hydrogen (H2). |
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| 23. |
Which earthworm blood colour |
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Answer» The heomaglobin pigment is present in earthworm. So it\'s blood colour is red. The\xa0blood\xa0of\xa0earthworm\xa0is red due to thepresence of dissolved haemoglobin in plasma.\xa0Earthworm\'s blood\xa0does not have RBC. Black Mostly red |
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| 24. |
What is the reduced syllabus for 10th science in 2020-21 |
| Answer» https://www.indiatoday.in/education-today/news/story/cbse-syllabus-reduced-by-30-check-deleted-syllabus-of-cbse-class-10-1698076-2020-07-07Refer this link for all subjects reduce syllabus | |
| 25. |
Why carbon cannot form tetravalent bond with itself |
| Answer» The reason a\xa0carbon\xa0atom\xa0cannot bond\xa0with four electrons with another\xa0carbon\xa0is due to the\xa0carbon\xa0electron orbitals. Since it has a s and 3 p orbitals, it must create one sigma and at most 2 pi\xa0bonds\xa0with another\xa0carbon. Hence, you\'ll have to\xa0bond\xa0them with another atom.\xa0Carbon\xa0can\xa0not form 4 bonds\xa0with another\xa0carbon\xa0because of its orbitals which are some time hybridized. ... In case of ethyne it shows sp hybirdization and two p unhybird orbitals\xa0forms\xa0two pi\xa0bonds\xa0with other atom and two hybrid orbitals\xa0forms\xa0sigma\xa0bonds\xa0one with\xa0carbon\xa0and other with hydrogen. | |
| 26. |
Why should curd and sour substance not be kept in brass and copper vessels ? |
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Answer» The curd and sour substances are acidic in nature and when it react with the layer of copper and brass (it is basic in nature)It form salt as product in layer (greenish in colour),that salt isn\'t eatable. This is because curd and sour substances are acidic themselves. If u kept them in copper and brass vessels they form some compounds which is not good for body Curd & sour substance are acidic in nature. Hence, if acidic substance are kept in copper or brass vessels, they react to form toxic compound and make the food unfit for consumption |
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| 27. |
Potassium metal tests with water to give potassium hydroxide and hydrogen gas |
| Answer» Potassium metal reacts with water to give potassium hydroxide and hydrogen gas.Chemical equation:2K(s)+2H2\u200bO(l)→2KOH(aq)+H2\u200b(g)\xa0 | |
| 28. |
Compare and contrast nervous and hormonal mechanisms for control and coordination in animals. |
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Answer» Thanks for your answer? ✌ \t\xa0Nervous control\xa0Hormonal Control1It is consist of nerve impulses between PNS, CNS and Brain.1It consists of endocrine system which secretes hormones directly into blood.2Here response time is very short.2Here response time is very long.3Nerve impulses are not specific in their action.3Each hormone has specific actions.4The flow of information is rapid.4The flow of information is very slow.\t |
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| 29. |
Explain why planets do not twinkle? 5 marks |
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Answer» Unlike stars,\xa0planets\xa0don\'t\xa0twinkle. Stars are so distant that they appear as pinpoints of light in the night sky, even when viewed through a telescope. Because all the light is coming from a single point, its path is highly susceptible to atmospheric interference (i.e. their light is easily diffracted). Planets are not a source of light. Instead, they reflect low intensity light reaching them.They are also closer to the Earth than the distant stars. Hence, the shift due to atmospheric refraction is smaller. As the planets are closer, planets appear larger in comparison to the stars. Hence, the shift is not enough for the planets to twinkle... hope it would be helpful✌? Because they are so large that the refraction of there rays cancle out each other and we see a beam of light Planets do not twinkle because:1. Planets are not a source of light. Instead, they reflect low intensity light reaching them.\xa02. They are also closer to the Earth than the distant\xa0stars. Hence, the shift due to atmospheric refraction is smaller.3. As the planets are closer, planets appear larger in comparison to the stars. Hence, the shift is not enough for the planets to twinkle.\xa0Twinkling occurs because the apparent position of a heavenly body is not fixed because the light through them is refracted through the atmosphere. Planets appear larger to human eyes as compared to stars because they are closer. As the angle subtended by the planets at the human eye is more, the shift in their position(as compared to stars) is smaller. Since, the shift is smaller, they do not twinkle. |
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| 30. |
Pennsylvania gorgeous brownies |
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| 31. |
Why pea plant was selected by Gregor Johann Mendel for experiment? |
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Answer» The main reason was its 7 contrasting character, and by the way it\'s garden pea plant (pisum sativum) because wild pea plant are also in nature. 4 \xa0Mendel selected garden pea plant for his experiments because of the following characteristics:(i) The flowers of this plant are bisexual.\xa0(ii) They are self-pollinating, and thus, self and cross pollination can easily be performed.\xa0(iii) The different physical characteristics were easy to recognise and study.\xa0(iv) They have a shorter life span and are the plants are easier to maintain. |
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| 32. |
What is water of crystallization? |
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Answer» Water of crytallization is the fixed njmber of water molecules which are present in a formula unit compound. Example, CaS02.2H20 in gypsum. Basically w.o.c is loosely bonded molecules of water The water of crystallization means having a fixed number of molecules present in one formula of a unit of salt. Crystal salts with water of crystallization are known as hydrates. The other names of water crystallization are crystallization water or water of hydration.The water of crystallization is caused by forming purified crystals from an aqueous solution. These crystals do not include contaminants. These crystals are easily affected by the heat.Examples of water of crystallization are proteins with more than 50% of the water of crystallization and copper sulfate pentahydrate with five molecules of water of crystallization. |
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| 33. |
Characteristics of metals and non metals with example? |
| Answer» Physical properties of metal\tMetals are solid except mercury that is found in liquid state at room temperature.\tThey are hard and tough except sodium and potassium that can be cut with a knife.\tThey are lustrous i.e. they shine in light because metals possess free electrons that vibrates on getting in contact with light.\tThey have high melting points except caesium and gallium have very low melting point.\tThey are good conductors of heat and electricity. The best conductors of electricity are silver and copper whereas lead and mercury are comparatively poor conductors.Physical properties of non-metals\tNon-metals may be either solids, liquids or gases.\tSolid non-metals are brittle and break down into powdery mass on striking with a hammer except diamond which is the hardest non-metal.\tThey have a dull luster but iodine is lustorous.\tThey have low melting points except diamond that has very high melting point.\tThey are poor conductors of heat and electricity except graphite.\tThey are not malleable.\tThey are not ductile.\tThey are not sonorous.\tExamples are carbon, Sulphur, oxygen, phosphorous and many more. | |
| 34. |
Give reason platinum gold and silver are used to make jewellery? |
| Answer» Platinum, gold and silver are used to make jewellery because these are low reactive metals so rarely corrosion occur (In silver) and hence do not lost their shine and lustre. | |
| 35. |
What are alloy ? Give example |
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Answer» This topic is not coming \tAlloy is\xa0a metal made by combining two or more metallic elements, especially to give greater strength or resistance to corrosion.\tThey are\xa0homogeneous mixture of two or more substances.\tAn\xa0example\xa0of an\xa0alloy\xa0is\xa0the\xa0tin in\xa0the\xa0mixture of copper and tin that makes bronze.\tAnother\xa0example\xa0of an\xa0alloy\xa0is brass, which is made from copper and zinc. |
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| 36. |
List 2 traditional system of water harvesting |
| Answer» Few of traditional water harvesting systems are:Paar harvesting system:\xa0This practice is majorly implemented in desert areas in Rajasthan. In this process the water is collected from the catchment and left to percolate in soil.Talaab:\xa0This is most ancient type of water harvesting system. These Talaabs are reservoirs that may be natural or man made. The water stored in the reservoirs are majorly used for drinking and irrigation. | |
| 37. |
What salt is used for cooking |
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Answer» SODIUM CHLORIDE AKA NACL NaCl common salt Sodium chloride or NaCl or common salt |
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| 38. |
When does an electric shock circuit occur? |
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Answer» Thanks for your answer? ✌ Electric short circuit occurs if the insulation of the wires used in circuit is damaged, due to which live wire and neutral wire comes in direct contact. This results in increase of current in the circuit. |
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| 39. |
Explain how the organs of central nervous system are protected? |
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Answer» Yogita ingle aap Neet aspirant hai kya?Sorry , for sudden ask because i am new here and i found your most biology answer in that way, thats why i ask. Thanks for your answer? ✌ Brain gets the maximum protection, as it is housed inside the skull. Spinal cord gets protection by the vertebral column. Additionally, the brain and the spinal cord are surrounded by a system of three layers; called meninges. The cerebrospinal fluid; filled between these membranes; provides a cushion against mechanical shocks. |
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| 40. |
of scum when hard water is treated with soap |
| Answer» When a\xa0soap\xa0is used in\xa0hard water, a solid substance we call\xa0scum\xa0forms. This is because charged calcium and magnesium particles (called ions ) present in the\xa0water\xa0react with\xa0soap\xa0to form an insoluble substance.\xa0Only when all the calcium ions have been precipitated out as scum will the\xa0water\xa0lather. Thus the volume of\xa0soap\xa0solution measures the amount of\xa0hardness. Permanently\xa0hard water\xa0contains calcium or magnesium salts other than the hydrogen carbonates. | |
| 41. |
Write two basic of mendeleev\'s periodic table. Please give me ans urgently |
| Answer» \tIn Mendeleev periodic table, vertical columns in the periodic table and horizontal row in the periodic table were named as groups and period respectively.\tThe periodic table is composed of seven horizontal rows or periods and is numbered between 1 and 7.\tThere is a regular gradation in the properties of elements in the horizontal rows(periods) from left to right.\tThe periodic table is composed of eight vertical columns or groups.\xa0They ‘re numbered between 1 to 8.\tIf the element is similar but not much, to distinguish between them it is placed below and slightly away from it. Thus, each column will have two sub-columns A and B, so elements will show more similarity in the same sub-columns. | |
| 42. |
If 3 resistance of 3 ohm each are connected in parallel what will be their total resistance |
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Answer» R1\xa0= R2\xa0= R3\xa0= 3 Ω1/R = 1/R1\xa0+ 1/R2\xa0+ 1/R3= 1/3 + 1/3 + 1/3 = 3/3 = 1∴ R = 1 Ω Plz answer me sir fast |
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| 43. |
What are covolent bonds |
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Answer» The bonds which are formed by mutual sharing,pairing of electrons are covalent bonds The chemical bond formed by the sharing of an electron pair between two atoms so that both the atoms get their octet complete is called\xa0covalent\xa0bond. The molecules formed as a result of sharing of electron between two atoms are called as\xa0covalent\xa0molecules |
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| 44. |
State the law of combination of resistances in parallel |
| Answer» According to the law of combination of resistance in parallel, the reciprocal of the combined resistance of a number of resistances connected in parallel is equal to the sum of the reciprocals of all the individual resistances. | |
| 45. |
Give the law of combination of resistances in series |
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Answer» If five resistances each of value 0.2 ohm are connected in series what will be the resultant resistance According to the law of combination of resistances in series, the combined resistance of any number of resistances connected in series is equal to the sum of the individual resistances. |
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| 46. |
Explain about the mirror formula |
| Answer» Mirror FormulaThe distance of an object on principal axis from pole of spherical mirror is called\xa0object distance(u).The distance of position of image on principal axis from pole of spherical mirror is called\xa0image distance(v). 1 1 1—-\xa0+ —- = —-\xa0u v f | |
| 47. |
respiration formula |
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Answer» C6H6O12+6O2--->6CO2+6H2O+Co2 Exothermic reaction Autotrophic nutrition C6H12O6+6O2------>6CO2+6H2O+ATP |
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| 48. |
What is electric current ?Can anyone help me |
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Answer» In simple language; it is the rate of flow of electric charges. It is simply the flow of electric charges in a particular direction in the conductor. Easy way me hai . The flow of charge in a conductor is known as electric current. When the current is flow through conductor.On the other words the charge is in the motion is known as electric current. The amount of flow charge through any cross-sectional area of a conductor in unity time is called Electric Current |
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| 49. |
Give the name and structure formula of alkyne group for n=6,9,8 |
| Answer» Name =hexyne Structure formula = CH3-CH2-CH2-CH2-C=-CH | |
| 50. |
In periodic table left to right which characteristics are increases and decrease |
| Answer» 1) metallic character decreases2) non metallic character increases 3) chemical reactivity first decreases then increases4) no. of shells remain same5) size of atoms decreases6) valence electrons increases from 1 to 87) valency first increases then decreases8) nature of oxides: basicity decreases and acidity increases. | |