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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. |
Why does not enter in nucleus. |
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| 2. |
Why electron does not enter in nucleus. |
| Answer» Due to attraction electrons are not stationary. They revolve around the nucleus in the orbit. So centrifugal force balance the force of attraction. | |
| 3. |
Who replaced the concept of fixed path with probability of finding electron? |
| Answer» Hiensberg | |
| 4. |
State the theory according to which energy travel in discontinuous form |
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Answer» Quantum theory said that Planks quantum theory |
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| 5. |
Is any mass of elments severally? |
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| 6. |
Explain why the electron gain enthalpy of flourine is less negative than that of chlorine? |
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| 7. |
What is the syllabus of first unit test of class 11?? |
| Answer» Physical world ,dimensions, motion in a straight line, motion in a plane | |
| 8. |
Please explain resonating structure..and molecular orbital |
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| 9. |
What kind question will be asked in che Practical |
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| 10. |
Chemistery |
| Answer» The study of atoms and atomic structure is called chemistry | |
| 11. |
Why electrons can\'t stay in the nucleas |
| Answer» Electron are negatively charged particles and nucleus only contain positively charged particle.If electron are embedded in nucleus then electron and protons collide with each other which led to instability of an atom. | |
| 12. |
What is a simple way to learn HYBRIDISATION? |
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Answer» See the physicswallah videos. They taught too good The shortest way is as follows find the valence electrons of central atom lets say A then add number of atoms of hydrogen or halogens bonded to it say B and add or subtract if there is any charge on the molecule(if positive charge is present then subtract and if negative charge is present then add it)....Add A,B and charge accordingly and divide this sum by 2 then u will get a number say X...If X is 2 then hybridisation will be spX=3 then sp2X=4 then sp3X=5 then sp3dX=6 then sp3d2 or d2sp3X=7 then sp3d3...This is the shortest way of determining the hybridisation .hope This answer is helpful to u |
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| 13. |
Explain elimination reaction |
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| 14. |
Elimination reaction explain? |
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| 15. |
How many dichloro substitution products are possible for isobutane give the structure and IUPAC name |
| Answer» 3 isomer | |
| 16. |
How many miles in atoms |
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| 17. |
Does CCL4 get hydrolysed. Why or why not |
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Answer» CCl4 noth hydrolysis in water because carbon has no vacant p orbital to accomedate lone pair of water. No never because there is no hydrogen present in it. |
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| 18. |
Why Li metal us kept wrapped in parrafin wax. |
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Answer» Because lithium is in the first group which is a very good reactor because of the presence of only one electron in valance shell.. Because it reacts with oxygen in air and starts burning. |
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| 19. |
Solutions of alkali metals in liquid ammonia are paramagnetic |
| Answer» Paramagnetic because of presence of 2pi antibonding electron | |
| 20. |
what is zeolites |
| Answer» Zeolite are aluminumsilicate of metal .metal cation participate in formation of zeolite usally Na+,K+etc.It is used to remove permanent hardness of water. | |
| 21. |
Is boric acid a proton acid? |
| Answer» Boric acid is not a proton acid. It is a lewis acid and acceps electron pair from hydroxyl ion of h2o molecule. B(OH)³+2HOH--------> [B(OH)⁴]¯+H³O | |
| 22. |
What is the common name of ethandiamide |
| Answer» Acetic acid amine | |
| 23. |
Autoprotolysis?? |
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Answer» I love you baby?❤?? H2O+H2O=H3O+ + OH- is called autoprotolysis |
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| 24. |
Why does the elements shows diagonal relationship in the periodic table? |
| Answer» due to similar atomic size and other atomic properties | |
| 25. |
enthalpy of polymerization of ethylene as represented by the reaction is -100kj |
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| 26. |
Why are alkaline metals not found in nature? |
| Answer» Because alkali metals have one electron in its valence and they are very reactive because these have lowest ionization enthalpy | |
| 27. |
Why Ko2 is Para magnetic |
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| 28. |
How to balance a chemical equation ? |
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| 29. |
what is the reaction of zinc with hydrochloric acid? |
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Answer» Zn+2HClgives Zncl2+H2 Zn + Cl -----> ZnCl2 + H2 |
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| 30. |
How can I score full marks in practical on just 2 hours |
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Answer» Ya even if think the same i think it was been bad...coz he doesnt replied yet......??? How was ur exam?☺ Just study detection of acid n basic radical, titration and all viva questionsI can tell u with confidence because my practicle is completed long b4 December I\'m sry if I am wrong |
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| 31. |
Why sodium appear blue in colour in liquid ammonia |
| Answer» The blue of the solution when sodium is put in liquid ammonia is due to ammoniated electron which absorbs energy in visible region of light and imparts blue colour to the solution.... | |
| 32. |
How many valence electrons are in 4.2g of azide ion ? |
| Answer» | |
| 33. |
How to find sigma bond or pie bond |
| Answer» If any two elements are combined with 1covalent bond,then it is sigma bond. If any two element are combined with 2covalent bond,then upper bond is pie&lower bond is sigma. If any two element are combined with 3 covalent bond,then upper &lower bond is pie bond,while middle bond is sigma. | |
| 34. |
When 36 g of liquid water evaporatea at 373k find out change in entropy |
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| 35. |
Please give me synopsis |
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| 36. |
IUPAC of COOHCH2CH2COCHO |
| Answer» 6-Formyl-5-oxohexanoic acid. | |
| 37. |
Graph of chemical equilibrium |
| Answer» | |
| 38. |
What is Rena nickel? |
| Answer» Raney nickel is an active form of nickel and it is obtained by treating Ni-Al alloy with NaOH when Al dissolves leaving Ni behind... | |
| 39. |
Wat is iupac name of ch3chohch2cho |
| Answer» 3 hydroxy butan-1one | |
| 40. |
What is Chemical oxygen reaction (COD)? |
| Answer» | |
| 41. |
Did U all have chemistry passing package |
| Answer» What do you mean? | |
| 42. |
Write the names of different isotopes of hydrogen and their representation |
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Answer» Isotopes are those in which atomic no. is same but different mass no. The isotopes of hydrogen are protium, deuterium, and tritium. Following are the different isotopes of hydrogen :-(1) Protium or ordinary hydrogen :-1H1(2) Deuterium :-1H2 or D(3) Tritium :- 1H3 or T |
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| 43. |
What is limiting reaction |
| Answer» In that process the reactant can react and stop the production of products | |
| 44. |
Define limiting ragent |
| Answer» The reactant which is completely consumed in a reaction is called as Limiting reagent. Eg: N2+3H2--->2NH3Here H2 is limiting reagent. | |
| 45. |
About Aliphatic copounds |
| Answer» Acyclic or open chain hydrocarbons are basically called aliphatic compounds | |
| 46. |
LiCl is insoluble in water why |
| Answer» | |
| 47. |
Calculate the pH of 1*10-8 M solution of HCl. |
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| 48. |
Write the structural formula ofa) 2,3_Dibromo_1_phenylpentane |
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| 49. |
Explain law of chemical eqillibrium. |
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| 50. |
What is adiabatic process?? |
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Answer» Adiabatic process is reverse of isothermal process. System exchanges no heat and matter with its surrounding.In an adiabatic process, energy is transferred in the form of work only. A adiabatic process is one which occurs without transfer of heat and energy from system to surrounding... |
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