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This section includes 7 InterviewSolutions, each offering curated multiple-choice questions to sharpen your Current Affairs knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
What is time.....? ¿?¿ |
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Answer» Time is nothing but the movements of anything . That movement means here physically as well as chemical reactions, organic or inorganic, which cannot be reversed to that instant again time is a relative quantity ?? |
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| 2. |
What is philosopher stone |
| Answer» The goal of alchemy was to find a mythical and magical substance called “philosopher’s stone”\xa0not a literal stone but wax, liquid or powder with magical power, which on heating with a base, iron and copper metals would turn into gold, the purest form of matter which would bring wealth, health and immortality. | |
| 3. |
How find which are isoelectronic species |
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Answer» Isoelectronic species: These are those species which have the same number of electrons.They are the ions of different elements which have same number of electrons but differ from one another in magnitude of nuclear charge.Examples of isoelectronic species with 10 electrons:N3-,O2-,F- Species having same no. Of electron are called isoelectronic eg. Na3- ,O2-,Mg2+ |
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| 4. |
What are amine and amide ...Define with ex?????? |
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| 5. |
How to create exotic energy |
| Answer» The field equations and energy-momentum tensor are derived for a charged ideal fluid coupled to a scalar field. It is shown that there exists an interaction energy-momentum tensor which can have negative energy densities even though the fluid and fields have positive energy densities. The energy density and mass of a fluid sphere are calculated in the weak field limit and it is shown that they can be negative if certain conditions are met. When the mass of the sphere is negative the entire interior consists of exotic matter (i.e., matter which violates the weak energy condition). | |
| 6. |
Bond order kaise nikale ge O2-, O2-&formula to solve it |
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| 7. |
What is electrolytes |
| Answer» An electrolyte is a substance that dissociates in water into charged particles called ions. Positively charged ions are called cations. Negatively charged ions are called anions. Simply, an electrolyte is a substance that can conduct an electric current when melted or dissolved in water. | |
| 8. |
Pauliprim |
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| 9. |
Difference between diffusion and effusion. |
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Answer» Thank you \tEffusionDiffusionEffusion is said to occur when gas molecules escape through a pinhole into a vacuum.During diffusion one gas mixes with another usually by thermal random motion resulting in the collision between each other while releasing molecular energy.Effusion in simple terms is the ability of gas to travel through a small opening.Diffusion is the ability of gases to mix with each other usually in the absence of a barrier.Effusion occurs when the size or aperture of the hole is smaller than the mean free path of the molecules.Diffusion happens when there are no holes or if holes in the barrier are larger than the mean free path.During effusion particles move faster than diffusion because there is no collision between molecules.Diffusion rate is limited by the size and kinetic energy of the other particles.Effusion occurs or is facilitated by a difference of pressures.Diffusion occurs due to difference in concentrations.\t \tEffusionDiffusionEffusion is said to occur when gas molecules escape through a pinhole into a vacuum.During diffusion one gas mixes with another usually by thermal random motion resulting in the collision between each other while releasing molecular energy.Effusion in simple terms is the ability of gas to travel through a small opening.Diffusion is the ability of gases to mix with each other usually in the absence of a barrier.Effusion occurs when the size or aperture of the hole is smaller than the mean free path of the molecules.Diffusion happens when there are no holes or if holes in the barrier are larger than the mean free path.During effusion particles move faster than diffusion because there is no collision between molecules.Diffusion rate is limited by the size and kinetic energy of the other particles.Effusion occurs or is facilitated by a difference of pressures.Diffusion occurs due to difference in concentrations.\t |
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| 10. |
What is spontaneous process |
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Answer» Delta G <0 for spontaneous process and there must be some driving force Spontaneous process. A process which has a natural tendency to take place either by itself or after initiation under a given set of conditions is known as a spontaneous process. For example,(i) Sugar dissolve in water and forms a solution.Sugar + water →Solution of sugar in water |
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| 11. |
thermodynamics? |
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Answer» Gjh Seraj ,soundu ,smarakee se contact h kya Kaise ho sab Sone ja rii?? |
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| 12. |
Energy..?? |
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Answer» bbye.. good night ?.. See ya ?? hn coaching jane se achha vo join kar lena... vo jyada better hoga..?? Usse neet ki bhi preparation ho jayegi... ? Isme kaunsi help kar di ??? |
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| 13. |
Entropy?? |
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Answer» Ohh.. meko lgta h coaching ja k time hi waste hone wala h?usse achha to youTube wale teacher explain kar dete h ?? bar bar thank you mat bolo bhaii☺ isme thank you bolne ki kaunsi baat? ? nah.. mai nhi padhti.. aap? |
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| 14. |
Electron gain enthalapy...?? |
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Answer» Ohhh.. maine dekha tha 1 ya 2 ghnte ka video unka hota hai pure chapter pe.. to meko lga pura explain nhi kiya hoga... Isliye nhi dekhti mai??? nhi uske to nhi dekhe h?but unlogo k videos short hote hai.. Pura achhe se explain nhi krte... I think physics wallah hi best h.. ? video long hote hai unke.. But explain pura achhe se krte h? |
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| 15. |
Ionization enthalapy.....?? |
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Answer» Hn ye kro... phir ekdum achhe se samagh aayega.. beech me mere bhi dimaag ka dahi ho gya tha? but ab video dekh leti hu achhe se samagh aa jata hai.. ☺ Ohhh?chemistry hi mai is time jyada padh rii???physics wallah wale video dekh leti hu purane wale to sbb samagh aa jata hai ☺uske baad ncert se padh leti hu..... |
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| 16. |
Lattice enthalpy? |
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Answer» *Enthalpy* Lattice mentally is the measure of strength of forces between ions and ionic solid .The heater the lattice mentally the stronger the forces. |
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| 17. |
Geometrical isomerism |
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Answer» ?\u200d♂️?\u200d♂️?\u200d♂️bro Hey bro✌️ Geometrical isomerism is a type of stereoisomerism having the same molecular formula and same structure but differ in the relative arrangement of atoms.An example of geometric isomerism you will meet at an introductory level is but-2-ene. In one case, the CH3\xa0groups are on opposite sides of the double bond, and in the other case, they are on the same side. The two most common types of geometric isomers are those arising from a double bond and those arising from a ring structure. These type of geometric isomers are also called\xa0cis/trans isomers.\xa0When two identical groups occupy adjacent positions, the isomer is called\xa0cis\xa0and when arranged opposite to one another, the isomer is called\xa0trans.\xa0e.g[Pt(NH3\u200b)2\u200bCl2\u200b] |
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| 18. |
State of matter.???\u200d♂️ |
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Answer» Physical state Solid , liquid and gasChemical state Pure substance and mixturesPure substance : substances with only one type of particles. They are of two types ; compound and elements. Mixtures : substances with two or more than two types of molecules. They are also of two types homogeneous and heterogeneous Physical state or chemical state ???? |
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| 19. |
Give the bond order, stability and magnetic nature of O2 and O2+ |
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Answer» Bond order of O2 is two and O2+ is 2.5 Both O2 n O2+ is paramagnetic . O2 have two bond order |
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| 20. |
How many significant figure in 4.01×10 2 |
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Answer» 3 \xa04.01×10 2\xa0has three significant figures, 3 |
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| 21. |
How to calculate formal charge...?? |
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Answer» Formal charge= total no.of valence electrons-total no. of lone pair electron-1/2 total no.of bonding electron The formal charge over an atom of a polyatomic molecule or ion is the difference between the valence electron of that atom in the elemental state and the number of electrons assigned to that atom in Lewis structure.Mathematically, it can be expressed by following formula:F.C. = [Total no. of valence e–\xa0in free state] – [total no. of e–\xa0assigned in Lewis structure] F.C. = [Total no. of valence e–\xa0in free state] – [total no. of non-bonding pair e–\xa0(lone pair)] – 1/2 [total no. of bonding e–]The factor of ½ is attached to the no. of bonding e–\xa0because bonding e–\xa0is shared between two atoms. |
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| 22. |
What is chemical bond.......?? |
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Answer» Bond formed between atoms The bond formed between two atoms, ions,molecules is called chemical bond. |
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| 23. |
Give the graphical representation of Boyle’s law. (ANY THREE GRAPHS) |
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| 24. |
Radioactivity? |
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Answer» Time is not always with me Try ro understand , extrwmely sorry and dont repeat the information of me my names etc |
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| 25. |
Ionic equilibrium? ?\u200d♀️ |
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Answer» Isme aise hi dikhta h???? Gud evng ?? |
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| 26. |
What is Extensive Properties? Please any one answer this.. |
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Answer» Extensive properties, such as\xa0mass\xa0and\xa0volume, depend on the amount of matter being measured It is too short . I don\'t understand. which depends upon amount of matter... |
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| 27. |
Draw Born-Haber for sodium chloride |
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| 28. |
Calculate the no. of water molecule present in 2.5 g of H2O |
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| 29. |
Calculate calculate the pH of ch3cooh and NH4OH |
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| 30. |
What is photoelectric effect &results |
| Answer» The photoelectric effect is the emission of electrons when electromagnetic radiation, such as light, hits a material. ... The experimental results instead show that electrons are dislodged only when the light exceeds a certain frequency—regardless of the light\'s intensity or duration of exposure. | |
| 31. |
Yellow light emitted from a sodium lamp has a wavelength of 580nm. Calculate the frequency |
| Answer» h÷v=c | |
| 32. |
What is the S I unit of mass.how it is defined |
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Answer» Si unit of mass is kilogram it can be written in short form as (kg). Mass has dimension less and according to SI system of units mass has unit Kilograms (Kg). S I unit of mass is kg Kg |
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| 33. |
Write the isotopes of carbon? |
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Answer» G Carbon-12,Carbon-13 and Carbon-14 are three isotopes of carbon. |
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| 34. |
Why is ko2 is paramagnetic? |
| Answer» Since KO2 is superoxide and contains odd number of electrons or unpaired electrons that is why it is paramagnetic. | |
| 35. |
Calculate the radius , velocity and energy of electron in the 4th shell of beryllium be z=4 ,n=4 |
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| 36. |
Write the favourable factors for formation of ionic bond |
| Answer» Favourable factors\xa0for\xa0ionic bond\xa0formation are as follows:Low ionization enthalpy of metal atom.High electron gain enthalpy (Δeg H) of a non-metal atom.High lattice energy of the\xa0compound\xa0formed. | |
| 37. |
How many moles of hydrogen are there in 0.925 gram of calcium hydroxide. |
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Answer» Yes 0.0125 moles then 0.925/74=0.0125 moles |
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| 38. |
Is Hydrogen exist in s block element? |
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Answer» No Yes!!! no it is not in s block because it shows some properties of metals and some of non metals Yes hydrogen exist in s block element because it is 1spower2 last configuration s is coming so it is exist in s block Yes hydrogen exist in s block element |
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| 39. |
Hybridisation of B in BCl3 ? |
| Answer» Hybridisation of B is SP2 | |
| 40. |
What are the representative elements |
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Answer» The s-block andp-block elements are called representative elements. The\xa0Representative Elementsare those\xa0elements\xa0within the first two families (Groups I and II on the far left) and the last six families or groups (on the right) of the Periodic Table. TheTransition Metals\xa0are the\xa0elements\xa0in those Groups within the middle of the Table. Elements in which all the inner shells are complete but outer shell is incomplete is known as representative elements i.e Those elements which have less than 8 Ineed answer |
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| 41. |
Convert methane to ethane |
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Answer» Add1 carbon also in methane so it 2 hydrogen is coming so... Methane\xa0is treated with chlorine gas to form chloro methane. Chloro\xa0methane\xa0is treated with sodium and dry ether to form ethane Just put m before ethane? |
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| 42. |
write the Difference between sigma bond and Pi bond |
| Answer» Sigma bonds are a result of the head-to-head overlapping of atomic orbitals whereas pi bonds are formed by the lateral overlap of two atomic orbital. | |
| 43. |
Boyles law |
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Answer» at a constant temperature the pressure of a given mass of a gas is inversely proportional to its volumeP(pressure)=K(constant)/V(volume) V is inversely proposn to temperature at constant volume the pressure is inversely proportional to the temperature No. Of moles(n) and temperature (t) is constant in pv=nrt |
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| 44. |
Kolbe\'s electrolytic method |
| Answer» Kolbe\'s electrolysis method uses sodium salt of fatty acid to form the corresponding alkane as a product. | |
| 45. |
What is heavy water? Write its uses |
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Answer» Water that doesn\'t form lather with soap solution. It is mainly used in industries Depend on water wait Heavy water is D2O and it is mainly mainly used in industries Water in which hydrogen molecules are partly or wholly replaced by the deuterium.It is used in nucleus reactors Its is d20 water and mainly uses in industries |
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| 46. |
Can anyone give me Characteristics of VSEPR theory in simple words 6 to 7 points |
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| 47. |
What us Resonance |
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| 48. |
Why water molecule not linear |
| Answer» Because of the presence of lone pair in oxygen atom | |
| 49. |
No of atoms avg. Molecular mass amu. Define |
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| 50. |
ag+no3-. ------->ag+ +no balance in acidic medium |
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