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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. |
Which of the elements among B,Al,C and Si has highest first ionization enthalpy ?why. |
| Answer» Carbon has highest I.E | |
| 2. |
How should i prepare for chemistry exam class 11 in 2 days |
| Answer» Read notes from mycbseguide | |
| 3. |
Swartz reaction |
| Answer» | |
| 4. |
Important ques for p block chapter |
| Answer» | |
| 5. |
Why Hund’s rule is called rule of maximum multiplicity? |
| Answer» | |
| 6. |
What is meant by orientation of an orbital? |
| Answer» | |
| 7. |
BeO is souble but BeSO4 is insouble in water why |
| Answer» I think because of intermolecular attraction | |
| 8. |
Define entropy |
| Answer» Entropy is defined as the quantitative measure of disorder and randomness in a system. | |
| 9. |
What designation is given to an orbital having n=4,l=1. |
| Answer» | |
| 10. |
Electrophilic substitution reaction |
| Answer» | |
| 11. |
Emperical formula |
| Answer» | |
| 12. |
Resonance structure of Benzyl Carbocation |
| Answer» | |
| 13. |
Discuss lassaignes test |
| Answer» Lassaign test is experimental test in which we determine the presence of Nitrogen Oxygen Phosphorus sulphur.. In an organic compound by certain intermediate we determine the presence by the colour of formed product | |
| 14. |
The pH of 0.004M hydrazine is 9.7.calculate it\'s Kb and Pkb |
| Answer» | |
| 15. |
Ph3 is non polar pcl3 is polar |
| Answer» Due to their electronegative difference | |
| 16. |
How to name spiro compounds |
| Answer» | |
| 17. |
Wartz reaction |
| Answer» Its wurtz first learn spelling then come and ask question | |
| 18. |
Wurtz reactin |
| Answer» | |
| 19. |
Define nodal surface |
| Answer» A nodal surface is a region of space in which the probability of finding an electron is zero. Nodal spheres are found within 2s,3s....3p,4p....4d,5d.... Orbitals .nodal planes are found within any p,d,f.... Orbital | |
| 20. |
Can anyone give me short notes of organic chemistry - some basic principal and technique |
| Answer» | |
| 21. |
What happen when boric acid is added to water |
| Answer» Boric acid accept the electron from Water. | |
| 22. |
who discovered protons? |
|
Answer» Me Mw Ernest rutherford Goldstein |
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| 23. |
what is borax |
| Answer» It is corrom board piwder | |
| 24. |
Iupac name of (ch3)2chch(oh)ch(br)cocl |
|
Answer» 2-Bromo-3-hydroxy-4dimethylpentanoylchloride Answer please Say hi Hi aqusa |
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| 25. |
What is the formula of phenyl group |
|
Answer» Hay reply me Say hi bro Ok C6H5 |
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| 26. |
Last five years ke paper chaiye badle me onke solution Dene honge |
| Answer» | |
| 27. |
hess law |
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Answer» Hissssssssss You don\'t have book or sold it in market Delta Q = Q1+Q2+Q3 Snakes hessss |
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| 28. |
How to remember reactions |
| Answer» By mind concentration or by doing cheating in exam | |
| 29. |
Write resonance structure for SO2 |
| Answer» O=S=O(one lone pair is present with sulpur atom) | |
| 30. |
Why free radical is sp² hybridised |
| Answer» | |
| 31. |
Given kp is 1.8 × 10 power -2 Of reaction 2Nocl gives 2No plus cl2. At 500 k Find kc |
| Answer» | |
| 32. |
Why electrons move in the orbital don\'t fall in the nucleus. |
|
Answer» Becoz they have good legs to move in When electrons are moving around the nucleus, the electrostartic Force of attraction that exist between the nucleus and the electron is equal to the centrifugal Force of attraction due to the circular motion of electron. |
|
| 33. |
Causes of photoelectric effect |
| Answer» The phenomena of ejection of electrone form a metal sheet when a suitable frequeny of light strikes on it is called photoelectrical effect.. | |
| 34. |
Write one difference between adiabatic and isothermal process |
|
Answer» Adiabatic process is that process in which no exchange of heat take place and the isothermal process is that process is that process in which the temp. remains constant but the pressure and volume increase with the time... Gsiagcsjivwnjz |
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| 35. |
State the first law of |
| Answer» Of kya .? | |
| 36. |
State the first law of thermodynamics |
|
Answer» According to the physics..... The first law of thermodynamics is...... - Whe A and B are in thermal equilibrium B and C are in thermal equilibrium then A and C are also in thermal equilibrium. Energy nor be created neither be destroyed.....∆U=q+w... |
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| 37. |
What is emission spectra I\'m confused? |
| Answer» | |
| 38. |
What is the oxidation number of C in CH3COOH ? |
| Answer» Sp2 | |
| 39. |
What is the hybridisation of C in CO2 ? |
|
Answer» Sp2 Sp |
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| 40. |
Which two elements among the following belongs to the same period Al, Si, Ba and O |
| Answer» Ba and O belong to 2nd periodAl and Si belong to 3rd period | |
| 41. |
Open system |
| Answer» System where exchange of mass & energy occurs | |
| 42. |
What do you mean by green chemistry how will deacres environment pollution |
| Answer» | |
| 43. |
Imporant qustion for zee mains |
| Answer» See last 10 year question papers.☺ | |
| 44. |
Why sodium metal is added in organic compound after forming passing is extract |
| Answer» | |
| 45. |
How would explain the lower atomic radius of Ga as compared to Al ? |
| Answer» Ga has more no. of shells, the improper shielding or poor screening effect of inner d- electrons makes the nucleus to attract the valence orbital more strongly. Hence Ga is smaller in size than Al. | |
| 46. |
What is VESPAR theory |
| Answer» According to this theory the electron pairs surrounding the central atom repel each other and move so far apart from one another that there are no further repulsion between them. As a result the molecule has min. energy stability. | |
| 47. |
Why NF3 is pyramidal but BF3 is triangular planar? Explain through hybridisation. |
| Answer» Inter electronic repulsion | |
| 48. |
Cl can be converted to Cl- more easily than F to F-. Why ? |
| Answer» Because their size F is small so its ip is more and vise versa in cl | |
| 49. |
Why terminal alkali are more stable?? |
| Answer» | |
| 50. |
general formula of P block |
|
Answer» Yaa prachi ns2np1-6(except for He) |
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