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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. |
How we can know about element molar mass |
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| 2. |
Heisenberg uncertainity principle |
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| 3. |
What is passing marks in 70 marks of paper |
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Answer» 23 Divide 70 by 3...=23.33 or 24 |
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| 4. |
What are quantum numbers |
| Answer» These are the parameters through which exact position of electron is detected. | |
| 5. |
List of elements arranged in order with atomic no. ,mass,no. Of neutron |
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| 6. |
Arrange in increasing order of their electron affinityF,CBr I |
| Answer» Fl>Cl>Br>l | |
| 7. |
What is the difference between liquid and aqeous |
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Answer» A liquid is a state of matter. There being three states of matter, namely, solid, liquid, and gas. They all have their particular features and properties.Liquid is used to indicate formation of liquid substances in a reaction.Water is liquid.By “aqueous,” we actually mean a solution where the solvent is water and some compound is dissolved in it.\'Aqueous\' in a chemical equation indicates that the material dispersed in water (a solution in water). For example, when we pour sodium hydroxide solution into dilute hydrochloric acid, we get an aqueous solution of sodium chloride.\xa0\xa0 Liquid is the original state if matter.eg. Water. While aqueous us there solution of any matter In water.eg. NaCl (salt) dissolved I\'m water us its aqueous solution |
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| 8. |
osmosis is a special kind of diffusion comment |
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| 9. |
Show that 4th period have 18 elements.... |
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| 10. |
Which gas law is responsible for bursting of tyre when we fill it at high pressure |
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Answer» When temp. Increases, pressure in tyres also increases which led to irsting of tyres in summer Gay lussac law which states that pressure and temperature are directly proportional |
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| 11. |
Which bond is stronger hydrogen or Covalent |
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Answer» Hydrogen bond is stronger than covalent bond , as it forms bonds between highly electronegative atoms. A hydrogen bond can be easily broken , whereas a covalent bond is much stronger Hydrogen bond is also covalent bond a special case where only hydrogen form covalent bond highly electronegative elements so, their is no difference in covalent and hydrogen bond ex- H2O it has covalent bond as well as hydrogen bond |
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| 12. |
Quantum numbers |
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| 13. |
What are isotpoes |
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Answer» Element having same atomicc number but different atom Those element which have same atomic no. but have different mass no.Ex- cl-at.no.17 mass no.35.5Cl- at.no.17 mass no.36 |
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| 14. |
Why aliphatic compounds and Alicyclic compounds have same properties. |
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| 15. |
Why IF5 is square pyramidal |
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| 16. |
Explain diagonal relationship.. |
| Answer» It can be defined as the some element r similar in chemical properties with the other element which r diagonally opposite to each other .Ex--Lithium resembles to magbesium | |
| 17. |
What is electronic configuration of 11NA+ |
| Answer» 1s2 , 2s2, 2p6. | |
| 18. |
Why ammonia is soluble in water |
| Answer» Due to differences in electronegativity b/w nitrogen and hydrogen. The ammonia molecule is polar,allowing it to form hydrogen bonds.Since water is also polar, ammonia can easily form hydrogen bonds with water molecules. | |
| 19. |
What is meant by aqueous tension ? |
| Answer» Pressure exerted by saturated vapour is called aqueous tension | |
| 20. |
Calculate the density of CO2 at 100.C and 800mm pressure |
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| 21. |
What do you mean by boyle temperature |
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Answer» The temperature at real gas behaves like an ideal gas over an appreciable pressure range is called Boyle temperature The temperature for which the second viral coefficient becomes zero |
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| 22. |
How to find atomic number if we know period and group |
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| 23. |
Whowho discovered proton |
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Answer» Electron-JJ Thomson Proton- goldstein and neutron- chadwick Rather tired ????? Rutherford Rutherford |
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| 24. |
What do you understand by green house effect ? |
| Answer» The greenhouse effect is the process by which radiation from a planet\'s atmosphere warms the planet\'s surface to a temperature above what it would be without its atmosphere. If a planet\'s atmosphere contains radioactively active gases (i.e., greenhouse gases) the atmosphere will radiate energy in all directions.Greenhouse gases in the atmosphere radiate energy, some of which is directed to the surface and lower atmosphere. The mechanism that produces this difference between the actual surface temperature and the effective temperature is due to the atmosphere and is known as the greenhouse effect.Exmple of greenhouse gases is carbon dioxide. | |
| 25. |
Why is dihydrogen. Not prefered in balloons these days ?????? |
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Answer» Thank you ... The problem is dihydrogen is explosive and if you have children running around with balloons that could catch fire and blow up in their faces, it may have some health and safety implications. It reacts with atmospheric oxygen and catch fire.So it\'s dangerous. |
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| 26. |
Combustion of ethanoic gives out |
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| 27. |
Justify the statement -\'\'the equilibrium is dynamic in nature.\'\' |
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| 28. |
Why are compound stored in dark coloured bottle |
| Answer» To get not effected or get reacted with light or out side atmosphere | |
| 29. |
What is pv/nrt |
| Answer» Pv/nRT or pv=nRT is an ideal gas equation | |
| 30. |
Formula of actual weight ????? |
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| 31. |
What is heterolysis of Covalent Bond? |
| Answer» Heterolysis of covalent bond is the breaking of covalent bond in which the highly electronegative takes the all shared pair of electrons in bonding and become anionic | |
| 32. |
Which one is better for expressing concentration of solution molarity or molality |
| Answer» Molality is betterAs in this mass of solvent is considered which is temperature Independent so is molalityBut in molarity volume is considered which changes with temperature so is molarity. | |
| 33. |
What is radioactive elements |
| Answer» Elements with unstable nucleus is called radioactive elements | |
| 34. |
What is the value of n,1,m and s for 3ps |
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| 35. |
What is magic number? |
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| 36. |
Find the value of n, l, m,s n=5 |
| Answer» For n=5, l=0,1,2,3,4, m=-4,-3,-2,-1,0,1,2,3,4, s=+1/2,-1/2 | |
| 37. |
Factor affecting |
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| 38. |
What is pie bound |
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Answer» The bond formed by the sidewise overlapping of atomic orbitals is called pi bond. It is weaker than sigma bond. The pi bond formed by side wise overlapping of orbitals The bond formed between pi- pi overlapping. |
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| 39. |
How to count the pie bonds and sigma bonds in a molecule??? |
| Answer» In an molecule if their is only a single bond their always a sigma bond and if their is two bond exist in molecule then their is one sigma and one pi bond exist and if their is three bond then it has one sigma and two pi bond exist | |
| 40. |
What is tension |
| Answer» A tension is a force which acts in opposite to the acceleration of connected body | |
| 41. |
Why bonds are formed |
| Answer» To satisfy the valency of an atom | |
| 42. |
what is the basicity of hypo phosporous acid? |
| Answer» 1 | |
| 43. |
What is molality |
| Answer» Molality: It is the number of moles of solute per kilogram of solvent. It is important the mass of solvent is used and not the mass of the solution. Solutions labeled with molal concentration are denoted with a lower case m. | |
| 44. |
What is the dipole moment clear definetion? |
| Answer» Dipole Moment : A dipole moment \u200bis a measurement of the separation of two opposite electrical charges. Dipole moments are a vector quantity. The magnitude is equal to the charge multiplied by the distance between the charges and the direction is from negative charge to positive charge: μ = q · r. | |
| 45. |
How find bond order |
| Answer» Bonding - antibonding /2 | |
| 46. |
About milikans oil droplet method |
| Answer» | |
| 47. |
Dipole moment of H2O2 is greater than H2O. Why? |
| Answer» Their is greater electronegative charge in H2O2 compare to H2O | |
| 48. |
If Al is oxidation number is zero and why Al charge has positive |
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| 49. |
who was robbet hook |
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Answer» Man discovered cell was Robert hook not robbet hook May be discovered living cell May be he Disco beter living cell |
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| 50. |
Stoichimetry or stoichiometric |
| Answer» To participate the chemical reaction | |