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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. |
विलयन |
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| 2. |
What is the solid structure of H2O2 |
| Answer» H-O-O-H | |
| 3. |
What is borax bead test? |
| Answer» | |
| 4. |
What is buffer solution??? |
| Answer» | |
| 5. |
What are physical process of eqilibria |
| Answer» Physical process of equilibrium involve: solid - liquid equilibrium, liquid - vapour equilibrium and solid - vapour equilibrium.•In solid-liquid equilibrium , evaporation occurs.Rate of melting ice =rate of flowing water.•In liquid vapour equilibrium, condensation occurs.In this , vapour pressure is constant at given temperature.•In solid vapour equilibrium, sublimation occurs. | |
| 6. |
write le chatlier principle |
| Answer» In le chatelier principle ,If there is any change in equilibrium, then equilibrium shifts in that direction that tend to undo the effect.For exampleConsider a reaction is in equilibrium. Now , If we remove product in equilibrium ,then the no. Of moles increase in reactant side and therefore reaction proceed in forward direction to balance moles concentration in products side to undo the effect | |
| 7. |
Calculate enthalpy of combustion of methane |
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| 8. |
Define quntam number. |
| Answer» a number which occurs in the theoretical expression for the value of some quantized property of a subatomic particle, atom, or molecule and can only have certain integral or half-integral values. | |
| 9. |
a 0.2 molar solution of formic acid is 3.2% what is its ionization constant? also find its PH |
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| 10. |
What is called temperature |
| Answer» Temperature is the degree of hotness or coldness. | |
| 11. |
DEFINE AUFBAU Principle? |
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| 12. |
If excluded volume is taken as zero compressibility factor Z is |
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| 13. |
Acetylenes is treated with dilute sulphuric acid in presence of HgCO4 at 330k |
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| 14. |
Can marine animals service in distilled water |
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Answer» No because it does not contain dissolved oxygen in it which is necessary for marine animals to survive No because distilled water have not salt |
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| 15. |
How to remove permanent hardness |
|
Answer» By thermal treatment or by ion exchange or by reverse osmosis. By Calgon\'s method, simple resins method, Treatment of salt with washing soda etc. |
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| 16. |
What happens when two propanol reacts with alumina at 630K |
| Answer» | |
| 17. |
Second I. E. of calcium is more than first then CaCl2 is stable, CaCl is not |
| Answer» Because of high lattice enthalpy of CaCl2 | |
| 18. |
Explain oil drop experiment ?? |
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| 19. |
Balance disproportionation rxn rule |
| Answer» | |
| 20. |
Ethane+methane = |
| Answer» Propane | |
| 21. |
How does H2O2 behave as a bleaching agent |
| Answer» | |
| 22. |
Uses of fulleren |
| Answer» | |
| 23. |
What are characteristics of p- block element |
| Answer» | |
| 24. |
Why carbon show electropositive nature |
| Answer» | |
| 25. |
How to name the compound |
| Answer» | |
| 26. |
Why is naoh stronger base |
| Answer» Sodium hydroxide is a strong base because it ionizes completely when dissolved in water. | |
| 27. |
Tupe of hybridisation in c3H4 |
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Answer» Sp 1 carbon sp32 carbon sp3 carbon sp |
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| 28. |
What are catanation |
| Answer» Catenation is the bonding of the atoms of the same elements into form of chain. It is occurs mostly on carbon in the form of covalent bond. | |
| 29. |
Which two theory is significant in the development of quantum mechanical model? |
| Answer» Modern atomic theory and quantum theory. | |
| 30. |
Which sub atomic particle have no mass |
| Answer» electron has negligible mass | |
| 31. |
What is carbon number |
| Answer» 6 | |
| 32. |
Potassium carbonate can not be prepared by solvay\'s process. Why? |
| Answer» | |
| 33. |
In coordinate bond the 2 e are shared or given to another another atom |
| Answer» | |
| 34. |
Difference between ionic and covalent charactrer |
| Answer» Ionic bond forms between e cation and anion whereas covalent forms between same cation or anion. I. B have high melting and boiling point where c. B have low m. P and b. P | |
| 35. |
What is hydration enthalpy |
|
Answer» The enthalpy change when one mole of anhydrous salt absorb sufficient amount of water Hydration enthslphy is that enthalpy which can combining species attack to form simple species |
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| 36. |
What is dynamic equilibrium |
| Answer» Both forward or backward reaction still take place and there rate become constant | |
| 37. |
What is ions eletron method and how to slove reaction |
| Answer» | |
| 38. |
Why sigma bonds are stronger than ok bonds |
| Answer» Because sigma bond are made up of Head to head over laping and pye bond made up of lateral over laping | |
| 39. |
Does hydration enthalpy depend upon size of molecules |
| Answer» Yes, hydration enthalpy is inversely proportional to the size | |
| 40. |
What is anhydrous salt |
| Answer» Salt from which water of crystallisation is removed | |
| 41. |
What is elastic fatigue |
| Answer» Temporary loss of elastic properties because of the action of repeated alternating deforming force | |
| 42. |
Arrange the following in the increasing order of their size F- ,Li- ,Na- ,Cl- |
|
Answer» Li F Na Cl Li Na F Cl |
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| 43. |
Hybridisation of each carbon in (CH3) 2CO |
| Answer» In(CH3)2 :sp3 and ln co :sp2 | |
| 44. |
What is sigma and pie bond? |
| Answer» Sigma is strong bond and pie is weak bond all single bonds are sigma bond | |
| 45. |
Calculate the concentration of H+ ion of 0.1 of acetic acid. If the degree of ionisation is 0.0132 |
| Answer» | |
| 46. |
Explain methods can be employed to remove the permanent hardness of water |
| Answer» It can be removed by the following methods-1.treatment with wasing soda2. is ,ion exchange method,3.is ,calgons methods | |
| 47. |
Why hydrogen not settled in 17^th group?? |
| Answer» Bcz. It \'s atomic no. is 1. | |
| 48. |
How many sigma and pu bond present in C2H2 and C2H4 |
| Answer» 1.sigma 4,or pie22.sigma5,or pie 1 | |
| 49. |
What about lithium polymer battery |
| Answer» | |
| 50. |
Why H2S is gas whereas H2O is liquid |
| Answer» Oxygen is highly electronegative which increases the polarity of H2O molecules hence hydrogen bonding takes place but there is no hydrogen bonding in H2S so it will remain gas. | |