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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. |
Li get hydrated , form lih2o2 but why not nacl get hydrated |
| Answer» lithium has the highest hydration enthalpy..... it react with water easily....whereas NaCl have very strong bond (ionic bond) not able to get hydrated | |
| 2. |
Why H2O2 do not kept in the presence of light??? |
| Answer» If we kept H2 O2 in presence of light then light will pass through it and hydrogen peroxide is decomposed into hydrogen and oxygen to avoid this reaction of decomposition that\'s why hydrogen peroxide is kept under waxed line vessels or in dark places. | |
| 3. |
Find oxidAtion number of oxygen in KO2 |
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Answer» -1/2 (super oxide) -2 |
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| 4. |
Define the term redox titration ? |
| Answer» | |
| 5. |
What is Gibbs energy ?What is it\'s behaviour in chemical bonding? |
| Answer» Gibbs free energy is the energy associated with chemical reaction that can be used to do work the free energy system is the sum of enthalpy + product of temperature and entropy of system | |
| 6. |
Dehydration of alcohol some example |
| Answer» | |
| 7. |
Some investigatory projects of chemistry for 11th |
| Answer» | |
| 8. |
Fzdg |
| Answer» Feder Zug dusen goege | |
| 9. |
Define gram mole? |
| Answer» Gram mole is the mass of the substance in grams numerically equal to its molecular weight | |
| 10. |
Name the isotope which reference for atomic mass unit |
| Answer» Carbon12 | |
| 11. |
How convert Compound into benzene ?(1)ethyne(2)ethene(3)hexane |
| Answer» Ethyne to benzene=by doing the partial reduction in the presence of nickel as a catalyst Hexane to benzene= by doing cyclization in the presence of catalyst dichromate | |
| 12. |
Why aqueous solution of sugar does not conduct electricity? |
| Answer» Becoz there is no ions in solution | |
| 13. |
Effect of pressure in equilibrium reactions. |
| Answer» See, as the pressure increases the equilibrium shifts to the direction having lesser no. of moles n as it decrease the reverse happens. | |
| 14. |
Explain dimensional analysis(unit factor method) |
| Answer» | |
| 15. |
How water gas produced from methane |
| Answer» | |
| 16. |
Why is benzene extra ordinarily stable though it contains three double bonds? |
| Answer» | |
| 17. |
Sodium oxide which type of oxide |
| Answer» It is a peroxide | |
| 18. |
Comment on the oxides formed by alkali metals |
| Answer» | |
| 19. |
Atom is living or non living substance |
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Answer» Perfect answer pls to this question Atom is living ßubstance????? No atom are not living May be it is living Yes yes atoms r non leaving Atom are leaving as well as non leaving Non living atom is non leaving |
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| 20. |
Define difference between ores and minerals |
| Answer» Ores are found from earth in impure for but menerials are extered form ores | |
| 21. |
Half reaction mathod se Mno4+I+H2o=Mno2+Io3 |
| Answer» | |
| 22. |
How we made bond line |
| Answer» | |
| 23. |
What is flame test ? |
| Answer» See the colours of flame | |
| 24. |
Yr koi assan way h periodic table ko yad krne ka |
|
Answer» Ty de Ha kafi video present ha how to learn periodic table on Youtube Ty sis NO......bro |
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| 25. |
Cl+Na |
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Answer» Nacl2 hai Sachin??????????? NaCl2 |
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| 26. |
Why H2O is liquid at room temperature where as .H2O is a gas |
| Answer» Here H2O is liquid and H2S is gaseous at room temperature | |
| 27. |
How to remember the hydrocarbons reaction s |
| Answer» Just react one hydrocarbon with other all hydrocarbons elements so. That. U can easily understand the relation between them | |
| 28. |
How remamber t |
| Answer» | |
| 29. |
Why Na+ exist Na2+ does not exist |
| Answer» because Na+ is stable while Na2+ is unstable | |
| 30. |
How is silicon tetrachloride prepared? Write it\'s properties and uses! |
| Answer» | |
| 31. |
What happens when alkenes react with dihydrogen |
| Answer» Ethene reacts with hydrogen in the presence of a finely divided nickel catalyst at a temperature of about 150°C. Ethane is produced.This is a fairly pointless reaction because ethene is a far more useful compound than ethane! However, what is true of the reaction of the carbon-carbon double bond in ethene is equally true of it in much more complicated cases. | |
| 32. |
How we balance oxidation no. In balancing the chemical reaction |
| Answer» | |
| 33. |
What is relation between kp and ka? |
| Answer» | |
| 34. |
State le-chateliers principles .what is the effect of adding hydrogen |
| Answer» | |
| 35. |
What is softness and hardness in hyrogen chapter |
| Answer» Softness means absence of calcium and magnesium salt in water and hardness means presence of calcium and magnesium salt in water in the form of hydrogen carbonate chloride and sulphate | |
| 36. |
What is solvey process ? Its Urgent tell me |
| Answer» Solvay process is also known as Ammonia soda process and this is the major industrial process for the production of sodium carbonate | |
| 37. |
Difference between LPG gas and CNG |
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Answer» LPG is liquid petroleum gas which is used in household activities whereas CNG is Compressed natural gas whichever is used in vehicles. Lpg is present in liquid state and CNg are present in gas state one is use for house hold work and another in vechiel |
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| 38. |
What are the conditions for weightlessness? |
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Answer» It is because the net force acting on all bodies inside satellite is zero and the gravitational force acting on the satellite is completely utilized for centripetal force required for its orbital motion The sensation of weightlessness experienced by astronauts is not the result of there being zero gravitational acceleration (as seen from the Earth), but of there being no g-force that an astronaut can feel because of the free-fall condition, and also there being zero difference between the ... |
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| 39. |
What is leminar flow |
| Answer» Leminar flow is freely move to the surface | |
| 40. |
Why lithium does not form peroxide? |
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Answer» Because lithium is small element and can\'t be attached with peroxide (H2O2) Because of high polarizing power of li+ ion ,the salts of lithium have lower ionic character than salts of other alkali metal |
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| 41. |
Writ the structural formula of oEthylanisole |
| Answer» | |
| 42. |
What is a galvanic cell? |
| Answer» The cell which converts mechanical energy into electrical energy is called galvanic cell also called electrochemical cell or Daniel cell | |
| 43. |
Out of alkenes and alkynes, which is more reactive and why? |
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Answer» alkenes are more reactive bcoz it is less stable as bond order is directly proportional to stability and bond order of alkenes is less Alkynes are most reactive due to the triple Bond present between them alkynes are most reactive due to presence of 2 pi bonds Alkynes are most reactive... Alkynes are more reactive |
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| 44. |
Explain solvay process? |
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Answer» Tysm subhangi solvays process is use for Preparation of sodium carbonate in this 1. ammonium hydroxide is reacted with carbon dioxide and forms ammonium bicarbonate 2.then ammonium bicarbonate treated with sodium chloride and forms ammonium chloride and sodium bicarbonate in the form of ppt. .3.ammonium carbonate is heated and forms sodium carbonate with water and carbon dioxide |
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| 45. |
Green chemistry |
| Answer» Green chemistry is a way of thinking and is about utilising the existing knowledge and principles of chemistry and other science to reduce the adverse impact on environment. Green chemistry is a production process that would bring about minimum pollution or deteriorating to the environment | |
| 46. |
Calculate the formal charge on the atom in nitrite ion |
| Answer» | |
| 47. |
How to give IUPAC names to ethers |
| Answer» | |
| 48. |
Li + Nh3 ? |
| Answer» Li (NH3)4 | |
| 49. |
How many molecules are present in 18 grm of water? |
| Answer» 1 mol of H2O contains 6.02 × 10^23 moleculesI mop of H2O = 18 g of waterSo 18 g of water contains 6.02×10^23 molecules | |
| 50. |
Why equilibrium cannot be set up in the following type of reaction NaoH+HCL |
| Answer» Because NaOH is a strong base and HCl is a strong acid and these two reacts completely and forms salt and water.So they can\'t achieve equilibrium. | |