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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.
| 751. |
Hi friendsGive me your contactI am master at scienceYou can join at zoom Live..... On Class At free |
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Answer» Yes I am joining zoom class 8105111595 |
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| 752. |
explain the process of whitewashing |
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Answer» During white washing, lime is dissolved in water and the slaked lime solution formed is applied on the walls and roofs. This slaked lime reacts slowly with carbon dioxide of air and forms a thin shining layer of calcium carbonate.CaO + H2O → Ca(OH)2Ca(OH)2\xa0+ CO2\xa0→ CaCO3\xa0+ H2O During white washing, lime is dissolved in water and the slaked lime solution formed is applied on the walls and roofs. This slaked lime reacts slowly with carbon dioxide of air and forms a thin shining layer of calcium carbonate.CaO + H2O → Ca(OH)2Ca(OH)2\xa0+ CO2\xa0→ CaCO3\xa0+ H2O |
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| 753. |
Note on Myopia? |
| Answer» Myopia\tNear-sightedness\xa0: A person with Myopia can see nearby objects clearly\tA person with myopia cannot\xa0see faraway objects clearly.\tThe far point for the myopic eye is\xa0nearer than infinity\tOccurs due to\tExcessive curvature of the eye lensElongation of eyeball\t\t\tThe image of a distance object is formed in\xa0front of the retina\xa0and not on the retina\tDefected is corrected by using\xa0Concave lenses\xa0such that the lens will bring the image back on to the retina. | |
| 754. |
What are anticids? Explain their role in providing relief from stomach ache? |
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Answer» Antacids are mild bases or remedy which neutralise the excess acid produced by the stomach. Role:this neutralise the excess acid produced by the stomach This medication is used to treat the symptoms of too much stomach acid such as stomach upset, heartburn, and acid indigestion. It is also used to relieve symptoms of extra gas such as belching, bloating, and feelings of pressure/discomfort in the stomach/gut. |
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| 755. |
Physic problem |
| Answer» Which question | |
| 756. |
What happens when two drops of |
| Answer» lala Lala lory pagal ho gyi chori | |
| 757. |
Fe2 O3 Plus Co give rise to Fe plus CO2 |
| Answer» Yes! | |
| 758. |
Name the reactions in which acid react with base? |
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Answer» Thanks everyone ? Neutralisation reaction Neutralisation reaction Neutralisation reaction Neutralisation |
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| 759. |
Base should not be kept in active metal container.Why???? |
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Answer» Because base will react with active metal to form hydrogen gas and salt Because bases react with metal Active metals often react with bases to form salts.For example:NaOH + Zn => NaOZn + H2Sodium hydroxide reacts with Zinc to form sodium zincate with liberation of H2 gas. Because metals react with base to liberate hydrogen gas . |
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| 760. |
Which type of chemical compound found in citric fruits? |
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Answer» Citric acidCitric acid\xa0is a weak organic acid found in citrus fruits. It is a natural preservative and is also used to add an acidic (sour) taste to foods and soft drinks. "Its citrus not citric"? |
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| 761. |
If their is gravity then why we need peristalsis to slide food??? |
| Answer» The force of gravity will push the food very slowly. Peristalsis is there to accelerate the movement | |
| 762. |
What is refraction science ch 10 |
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Answer» refraction is the change in direction of a wave passing from one medium to another or from a gradual change in the medium. Deflection of light from one medium to another medium The deflection of light during movement of light from one medium to another |
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| 763. |
Brain is responsible for |
| Answer» Ch 10 ka notes | |
| 764. |
Are all the stars in the sky are actually there?? |
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Answer» Light is not instantaneous. Sun is 150 million km away from the earth.And the light the sun gives off the photons doesn\'t reach us immediately.Actually it travels and takes a finite amount of time that is it takes 8 minutes to reach us.If you are looking at the sun than it is 8 minutes past sun.For example if sun went off then we would not understand for another 8 minutes. Now we will come to the point of the start.The closest star to earth after the sun is called Proxima Centauri and it is actually about 4 light years away light years it means light travels at the speed of 3 ×10^8 m/s takes about 4 years to reach us once it leaves the star.So some stars are actually not there. Light is not instantaneous. Sun is 150 million km away from the earth.And the light the sun gives off the photons doesn\'t reach us immediately.Actually it travels and takes a finite amount of time that is it takes 8 minutes to reach us.If you are looking at the sun than it is 8 minutes past sun.For example if sun went off then we would not understand for another 8 minutes. Now we will come to the point of the start.The closest star to earth after the sun is called Proxima Centauri and it is actually about 4 light years away light years it means light travels at the speed of 3 ×10^8 m/s takes about 4 years to reach us once it leaves the star.So some stars are actually not there. Are you mad or wht Yes. Stars are actually there but we all do not see there actual position, we see there apparent position due to the phenomenon of atmospheric refraction,just like if we put a pencil in water and observe from outside, we see the apparent position of the pencil. Yes |
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| 765. |
Gj |
| Answer» Sorry vo glti se send ka button press ho gya mera question ye h ki. Question. -: trick to learn atomic mass of all the elements. | |
| 766. |
What is electrostatic force. |
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Answer» an attractive and repulsive force between particles are caused due to their electric charges. The electrostatic force is an attractive and repulsive force between particles are caused due to their electric charges. The electric force between stationary charged body is conventionally known as the electrostatic force. It is also referred to as Columb’s force. Force lie between Force lie between to charges known as electrostatic force. |
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| 767. |
Can you say what is the actual colour of sky? |
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Answer» The sky don\'t have any colour becouse it did not imits light at their own No Colour less Colour less Hi |
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| 768. |
Explain men and women sexual reproductive? In hindi. |
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Answer» Keep it secret brother?? Why sir |
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| 769. |
What happened if acid will not secreated during digestion of food in stomach |
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Answer» If acid is not secreted in stomach during digestion enzyme pepsin will not wark and then protein couldn\'t be broken into amino acid You will suffer from constipation, and will need to take multi vetamines Hydrochloric acid is necessary to make the medium acidic which allows inactive enzyme pepsinogen to be converted into pepsin. Pepsin plays an important role in the digestion of proteins. Moreover, it also kills various microbes which may be present in food. These actions would not be possible in the absence of hydrochloric acid. Hydrochloric\xa0acid\xa0is necessary to make the medium\xa0acidic\xa0which allows inactive enzyme pepsinogen to be converted into pepsin. Pepsin plays an important role in the digestion\xa0of proteins. |
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| 770. |
There is a need to dispose the waste in a proper manner. Justify the statement giving reasions. |
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Answer» Idk It is because waste has to be disposed in such a manner that it doesnt cause any type of pollution.For example when wastes are dumped into water bodies they pollute it and also affect the marine life.If we bury it in the land it causes the depletion of the fertility of the soil and makes the land a wasteland. There is a need to dispose the waste materials in such proper manner that it doesn\'t cause any type of pollution that\'s harmful for our health. |
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| 771. |
Do organism create exact copies of themselves in asexual reproduction |
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Answer» No If organisms reproduce asexually, then there is limited variation, and organisms can create exact copies of themselves.However, in case of sexual reproduction, there are a lot of variations. Due to this, exact copies of an organism are never created. Because no two biological process provide same results and there will be small variation No the organism won\'t produce exact copy in both types of reproduction |
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| 772. |
Draw and write ray diagrams, image position and image size |
| Answer» | |
| 773. |
What is dissociate or ionise? |
| Answer» Dissociation in chemistry and biochemistry is a general process in which molecules (or ionic compounds such as salts, or complexes) separate or split into smaller particles such as atoms, ions, or radicals, usually in a reversible manner. | |
| 774. |
Explan sexual |
| Answer» Sexual reproduction is a biological process by which animals produce off spring for the purpose of continuing the species.1. Gametes are formed.2. Two individuals needed.3. The off spring is similar but not identical to there parents.4. Useful in generating various variation in species.5. Adopted by higher organisms. | |
| 775. |
How are your preparation going for board exam?? |
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Answer» Wow as a lighting Nothing only online Tell important points of guide name tell As a lightning ⚡ because I follow the consistency rule |
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| 776. |
Draw the image of a body in three coordinate axis framed by a plane mirror? |
| Answer» | |
| 777. |
Why is calcium sulphate hemihydrate called \' Plaster of Paris\' ? |
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Answer» Because it was found near the area of Paris .so it is called as plaster of Paris Because its chemical formula is CaSo^4+1/2H^2O +1*1/2H^2O The chemical name of plaster of Paris is calcium sulphate hemihydrate. Because it\'s formual CaSo4+1/2H2o+1*1/2h2o |
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| 778. |
What do all acids and all bases have in common |
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Answer» All acids have H ions and base have OH ions All acids have H + ions where aa all base haveOH- ions. Hydrogen gas Both acids and bases dissolve fully/partially in water to form electrolytes (i.e. conduct electricity)Both of them react with oxygen to form respective oxides. There are exceptions. Both of them react with water to form respective oxides or hydroxides. There are exceptions. |
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| 779. |
pH of pure water |
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Answer» 7 7 7 7 7 |
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| 780. |
pH of acid rain |
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Answer» Below 5.5 5.6 Normal, clean rain has a pH value of between 5.0 and 5.5, which is slightly acidic. However, when rain combines with sulfur dioxide or nitrogen oxides- produced from power plants and automobiles- the rain becomes much more acidic. Typical acid rain has pH value of 4.0.Hope it\'s help you. |
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| 781. |
Where are concave mirrors used |
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Answer» \tConcave mirrors are commonly used in torches, search-lights and vehicles headlights to get powerful parallel beams of light.\xa0\tThey are often used as shaving mirrors to see a larger image of the face. The dentists use concave mirrors to see large images of the teeth of patients.\xa0\tLarge concave mirrors are used to concentrate sunlight to produce heat in solar furnaces. Vehicles side mirror Spectacles |
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| 782. |
What is tatravalancy |
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Answer» Carbon has a valency of four, so it is capable of bonding with four other atoms of carbon or atoms of some other monovalent element.This is known as tetravalency of carbon. Those element whose valance electron is 4 .. Example _ carbon |
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| 783. |
Name of alloys. |
| Answer» Allumel,chromel, cupronickel, German silver,inconel | |
| 784. |
What ozone layer? Explain each step. |
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Answer» The importance of ozone is defined by the fact that it protects the earth from harmful ultraviolet rays from the sun. The ozone layer is found in the upper regions of the stratosphere where it protects the earth from the harmful ultraviolet rays of the sun. These radiations can cause skin cancer in humans. The ultraviolet rays split the oxygen molecule into free oxygen atoms, these free oxygen atoms combine with the oxygen molecule to\xa0form ozone. This salient layer lies at a distance of 12-15 miles beyond the earth surface. Please google it. It will explain each step |
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| 785. |
Name the metal which are Amphoteric oxides. |
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Answer» Nacl Al2O3 and Zno Lead oxide (PbO) and zinc oxide (ZnO) |
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| 786. |
Trick for learn strong acids, basis and weak acids, basis |
| Answer» Do practice and some smart work | |
| 787. |
Different between baking soda and baking powderPlease tell me |
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Answer» Baking Soda\tHas only one ingredient – Sodium Bicarbonate\tDoes not contain Monocalcium Phosphate\tReacts immediately with acids\tShort leavening process\tBaking products formed when baking soda is used are not as fluffy when compared to baking powder products, due to shorter reaction duration.Baking Powder\tConsists of many ingredients including Bicarbonates (typically baking soda), and acid salts.\tContain Monocalcium Phosphate, which reacts with NaHCO3\xa0when wetted and heated.\tIt does not immediately react when exposed to acids.\tThe leavening process extended with the help of a second acid.\tGives fluffier products from baking Baking soda is not used in food but whrn we add acid in it so it becames baking powder which is used for various purposed |
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| 788. |
Chemical formula of baking soda? |
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Answer» NaHCO3 NaHCO3 NaHCO3 NaHCO3 |
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| 789. |
Trick of learn reactivity series |
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Answer» Please - potassiumStop - sodiumCalling- calciumMe - magnesiumA - AluminiumZebra - zincInstead - ironTry - TinLearn - leadHow - hydrogenCopper - copperMercury - MercurySaves - silverGold - GoldPlatinum - platinum A lot of thanks for give ans please- potassiumsend- sodiumcats- calciummonkey- magnesiumand- aluminumzebras- zincin- irontheir- tinlovely- leadhappy- hydrogencages- coppermade of - mercurysilver & - silvergold - gold "\xa0Kedar\xa0Nath\xa0Ca\xa0Mali\xa0Aloo\xa0Zara\xa0Fike\xa0Sne\xa0Pkata\xa0Hai\xa0Cyuki\xa0Har taraf\xa0Alag\xa0Auloo\xa0Pdta hai "1) Kedar - K -\xa0Potassium2) Nath - Na -\xa0Sodium3) Ca - Ca -\xa0Calcium4) Mali - Mg -\xa0Magnesium5) Aloo - Al -\xa0Aluminium6) Zara - Zn -\xa0Zinc7) Fike - Fe -\xa0Iron8) Se - Sn -\xa0Tin9) Pkata - Pb -\xa0Lead10) Hai - H -\xa0Hydrogen11) Cyuki - Cu -\xa0Copper12) Har - Hg -\xa0Mercury13) Alag - Ag -\xa0Silver14) Auloo - Au -\xa0Gold15) Pdta - Pt -\xa0Platinum |
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| 790. |
Formula of baking powder |
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Answer» NaHCO3 Na2HCo3 + tartaric acid NaHCO3 |
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| 791. |
Why metal oxides are basic in nature? |
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Answer» Yes The oxides of a\xa0metal are basic in nature or in other words they react with acids to form salt and water. In the case of non-metals, they are acidic in nature to form acids when they dissolve in water.\xa0Sulphur-dioxide\xa0dissolved in water can be tested with litmus.\xa0SO2\u200b+2H2\u200bO→H2\u200bSO4\u200b+2H.Sulphuric acid is acid that turns blue litmus to red. |
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| 792. |
What is condom?explain in detail? |
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Answer» NONSENSE BOY HEY U R MAD OR WHAT? Gghj |
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| 793. |
What happens when zinc metal reacts with hydrochloride acid ? |
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Answer» Form salt and water When zinc react with HCL the observation are * Bricks effervescence * change in temperature Are u gujarati??? Zn + 2HCl .......... Zncl2 + H2 |
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| 794. |
Why is silicon not make a long chain like a carbon? Explain in 5 points |
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Answer» Because silken has not versatile nature like carbon . Valencies are silicon and carbon is 4 but silicon cannot make the long chain acid is carbon making because silicon does not consist like carbon property. By the versatile nature of carbon |
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| 795. |
What will happen if a solution of sodium hydrocaronate |
| Answer» ???? | |
| 796. |
What are Bio catalysts? |
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Answer» Bio catalysts are the enzymes that help tho break bown the large substance into smaller substance It is the process which is based on catalysts with biological origin, such as enzymes that are used to obtain biomolecules. Biocatalysis is the process based on\xa0catalysts\xa0with a\xa0biological\xa0origin (cells), such as enzymes that are used to obtain biomolecules [30]. Enzymes have become highly important since the use of these\xa0biological catalysts\xa0allows for mild working conditions compared to traditional chemical\xa0catalysts. |
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| 797. |
HAPPY INDEPENDENCE DAY GUYS (khushi mahi sana avi sanket where are you all)??? |
| Answer» Same to you | |
| 798. |
whatisforc |
| Answer» A\xa0force\xa0is a push or pull upon an object resulting from the object\'s interaction with another object. Whenever there is an interaction between two objects, there is a\xa0force\xa0upon each of the objects.\xa0There are many\xa0examples\xa0of\xa0forces\xa0in our everyday lives: weight\xa0force\xa0(i.e. the weight of something) the\xa0force\xa0of a bat on the ball. the\xa0force\xa0of the hair brush on hair when it is being brushed.\xa0A\xa0force\xa0is a push or pull acting upon an object as a result of its interaction with another object. ... Previously in this lesson, a variety of\xa0force types\xa0were placed into two broad category headings on the basis of whether the\xa0force\xa0resulted from the contact or non-contact of the two interacting objects. | |
| 799. |
What is Ohm\'s LawDiscribe about it? |
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Answer» At any constant temperature the current flowing through a conductor is directly perpotional to the potential difference accross the conductor. Ohm’s LawGeorge Simon ohm(in 1826)studied relationship between I and V across the ends of conductor.Ohm’s Law\xa0states that electric current flowing in a conductor is directly proportional to potential difference across the ends of the conductor,provided temperature and other physical conditions remains constant.V=IRR=Resistance of conductorResistance of a conductor is the property of conductor to oppose the flow of charge through it.R = V/IUnit of resistance is ohm1 ohm = 1 Volt\xa0/\xa01 AmpereResistance of a conductor is said to be 1 ohm if a potential difference of 1 volts across the ends of conductor makes a current of 1 ampere to flow through it.Slope = I / VSlope of graph V and I=Resistance of a conductorV=IRI= V/RIf R is halved then I is doubled.If R is doubled then I is halved. |
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| 800. |
Can anyone explain or describe the difference between Electric potential and potential? |
| Answer» \xa0Electric potential at a point in an Electric field (for instance, let\'s take it as uniform) is the amount of work done in moving a unit positive charge from\xa0infinity\xa0to that point against electric forces. (attraction or repulsion)whereas Electric potential difference between two points in an Electric field is defined as the amount of work done in moving unit positive charge from\xa0one point to another point\xa0against the electric force.In other words, Potential difference is simply the difference of scalar potentials between two points or anything you consider...Now let\'s take an example.Say, you\'re\xa0placing\xa0a charge (+q) at the point O. Also, There are two points A & B in the electric field\xa0E(It acts outward since the line charge is positive). Now, you want to move a charge (say +q) from B to A. Then, you\'ve to do some work against the force of repulsion. This work done is the potential difference between two points or Voltage (i.e.)\xa0WB?A=dV\xa0which further equals\xa0?E.dx. Electric field is simply the force experienced by unit positive charge.If you bring the same charge from\xa0?\xa0instead of B, it\'s electric potential. Using the above figure & integrating for total work done (with limits\xa0?\xa0to some scalar distance\xa0r), one could derive Electric potential at a point. It\'s given by\xa0V=q4??r. But, you could ask,\xa0"Why this work is not stored as some potential energy?"Yes, It is. But, Potential energy requires the magnitude of another charge also... If\xa0r\xa0is the distance of separation of two charges, P.E. is given by\xa0Ep=qQ4??r. In other words,\xa0Ep=VQ | |