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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 meant by lattice enthalpy? |
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Answer» The energy required to break one mole of letters of a compound is called lattice enthalpy Lattice energy is defined as the amount of energy released when one mole of ionic solid is burnt from its ionic constituent |
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| 2. |
What do you mean by 15 volume H2 O2 solution |
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Answer» Oh?? Yes I simply wrote the wrong answer?? Have you done that Hey I think no knows this answer but this question came to my question paper |
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| 3. |
How does react with(i) ammonia(ii) lithiumhydride(iii) water? |
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| 4. |
Why does the viscosity of a liquid decrease with temperature. |
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Answer» Has been increased temperature the thickness also decreases and the viscosity as well decreases Bcoz temp Inc. hoga toh molecules dhurr hoge (move apart ) kyuki unka intermolecular forces Dec ho jayega aur viscosity Dec. hogi Because viscosity is directly proportional to temperature |
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| 5. |
Homolytic fission |
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Answer» In homytic fision covelent breaks in such a way that each of the bonded atom get shared electron this lead in the formation of free radicals Moment equation consists of the formation of free radicals where is hydrolytic fission consists of the formation of carbocations and carbanions |
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| 6. |
Comment why calcium phosphate is basic in nature |
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| 7. |
Give a expression for calcium phosphate according to chapter equilibrium |
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| 8. |
state the heisenberg uncertainty principle |
| Answer» Heisenberg uncertainty principle states that it is impossible to determine simultaneously the position and the momentum of an electron. | |
| 9. |
Entropy and enthapy |
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Answer» State of randomness or disorder present in a system, while enthalpy is sum of internal energy of system. Entropy is the degree of randomness of a molecule and enthalpy means energy |
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| 10. |
Define Gibb\'s free energy |
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Answer» It is the amount of energy that can be converted into useful work is called Gibbs free energy Hey Gibbs free energy is one of the important or boring topic and Gibbs free energy mainly have a simple definition or if you say that if not definition it\'s the formula that is - 2.303 multiply Dell nTR multiply log k c |
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| 11. |
Comman ion effect |
| Answer» Whenever an alkali or alkaline metal is added to the equilibrium then whether the equilibrium shifts forward in the backward Direction This phenomena this effect is called common Ion effect | |
| 12. |
How to convert ethanioc acid into benzene |
| Answer» This ques. Is the example of ncert text book ,chp hydrocarbons .The reaction include many steps which are already discussed in this chp before. Have a look on it | |
| 13. |
Short note on redox reaction |
| Answer» Both oxidation and reduction simultaneously occurs... | |
| 14. |
What is metamers . |
| Answer» | |
| 15. |
What is the conjugate base of HCN |
| Answer» CN- | |
| 16. |
Limiting reagent |
| Answer» Reactant which gets completely consumed during reaction | |
| 17. |
What is the structure of ice |
| Answer» Tetrahedral | |
| 18. |
What are biodegradable and non-biodegredable pollutants |
| Answer» Biodegradable:- it can easily be decomposed by microorganisms or by nature itselfNon biodegradable:- which doesn\'t undergo degradation easily | |
| 19. |
last year 206 set 4 |
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| 20. |
Will the molatity of the solution be affected by temperature? Give reason? |
| Answer» Molality is independent of temperature. | |
| 21. |
What happens when :-1.Borax is heated strongly?2.Boric acid is added to water? |
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| 22. |
What are free radicals,carbocation and carbonions?Give the order of stability? |
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| 23. |
Calculate the volume occupied by 8.8 gram of carbon dioxide at 31.1 centigrate at 3.32 bar. |
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| 24. |
Relations between change in internal energy and change in heat energy |
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| 25. |
What is IUPAC name of water |
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Answer» Oxidane Oxidane Hydrogen peroxide |
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| 26. |
What is meant by free surface? In context of surface tension...... |
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| 27. |
What is state function property? |
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Answer» Under a conservative force When the system don\'t depend upon the path by which it arrives at its present state. Only the initial and final phase matters |
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| 28. |
Which is stronger hydrogen bond or vanderwaals force? |
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Answer» Hydrogen bond Hydrogen bond is stronger than vanderwall force |
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| 29. |
Define hydrogen bond |
| Answer» 1) It is weak electrostatic attraction force which is developed in between hydrogen and more electronegative atoms. like as F,O,N2) It is weak bond.3) It\'s bond dissociation energy is less. | |
| 30. |
Calculate the frequency and energy of a photo of radtion having wavelenght 6000 a |
| Answer» Wavelength× frequency= speed of light.Frequency= speed of light ÷wave length.F= (2.888×10^5)÷600010^5 = 10×10×10×10×10.F= 2.888×10^5÷ 6×10^3. =288.8÷6 =41.13333 So, F=41.133 Hz. | |
| 31. |
Common ion |
| Answer» | |
| 32. |
Why ch4 is not prepared by wurtz reaction ? |
| Answer» Because it has odd no. Of carbon atom | |
| 33. |
What is meson? |
| Answer» This ques is of which chapter?? | |
| 34. |
State avogadros law |
| Answer» Avogadro\'s law states that Equal volumes of all gases contain Equal no. Of molecules at same temperature and pressure | |
| 35. |
Why lithium salts are hydtrated |
| Answer» | |
| 36. |
What are degenerate orbital |
| Answer» Orbitals having same subshell and same energy | |
| 37. |
Reaction A+B2=AB2 identify the limiting reagent when 2 mole of A are mixed with 3mole of B2 |
| Answer» In this above equation A is as a limiting reagent because in 1st equation 1 mole of A reacts with .5 mole of N so if you take 2 mole of a then you requires 1 mole of N but it is in still excesexcess amount so you can recognise that Aid limiting reagent | |
| 38. |
Structure of 2,4 trimethylamine pentane |
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| 39. |
Why there is triple bonded hydrocarbons are sp hybridised |
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| 40. |
Explain sp hybridization with example of ethyne |
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| 41. |
Give reason water have higher density at 4°c |
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| 42. |
Why ionisation enthalpy of galium is more than aluminium? |
| Answer» Bcoz in Ga the addition of new valence shell and also presence of 3d orbital,which decreases the screening effect | |
| 43. |
Electropostive element are metal or non metal |
| Answer» Metal | |
| 44. |
How to determine the number of π and sigma bonds in any molecule. |
| Answer» π bonds are determined in a compound by double bonds(=) and sigma bonds by single bonds(-). But we can also determine sigma bonds by π bonds. In the double/π bonds, there are 2 single bonds(=) and in this, one bond is sigma bond , and the other , double bond .Thanks? | |
| 45. |
P.block |
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| 46. |
Why H and He can\'t be liquid at room temperature |
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| 47. |
How will you convert Benzene into P-Nitrochlorobenzene? |
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| 48. |
In which chapter the producer gas defines |
| Answer» | |
| 49. |
What is hybridisation of co2 |
| Answer» Sp2 | |
| 50. |
What is hybridization and it\'s type |
| Answer» The process of intermixing of atomic orbitals of equivalent energies and size to form new hybrid orbitals Types:-Sp3 tetrahedralSp2 trigonalSo diagonal | |