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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. |
Convert ethane to benzene |
| Answer» | |
| 2. |
Which is greater NH3 or N2 in size |
| Answer» | |
| 3. |
Uses of ionic hydrides |
| Answer» Ionic hydrides &it\'s complex are used as reducing agent & also used as solid fuel. | |
| 4. |
What are screening effect |
| Answer» | |
| 5. |
What is oxides? |
| Answer» | |
| 6. |
What is polarity |
| Answer» It means developing of charge. | |
| 7. |
How to convert ethene to etanoic acid? |
| Answer» Add of carboxylic group | |
| 8. |
Why alkaline earth metals are not found in free State,? |
| Answer» They have 1electron in its outer most shell | |
| 9. |
Define homolytic |
| Answer» | |
| 10. |
Which is more stable and why? Out of Pcl3 and Pcl5 |
| Answer» Pcl3 is more stable because The actual reason for unstability of PCl5 is because of presence of two axial bonds which form an angle of 90 deg with the triangular plane consisting of 1 P and 3 Cl atoms. Thus due to greater repulsions at axial positions in PCl5, it dissociates to give PCl3 and Cl2. f | |
| 11. |
Why gallium is smaller than the aluminium |
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Answer» in gallium d orbital are present before valence shell which have poor screening effect hence valence electron feel more effective nuclear charge .so size is smaller. Aluminum is smaller than galium because atomic size increases down the group Atomic radius of ga is lesser than Al |
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| 12. |
Do isotopes show same chemical properties |
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Answer» I love you baby ?\u200d❤️\u200d?\u200d??❤?? No ,some are b/with the isotopes. |
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| 13. |
What is the mechanism of halogenation and alkane? |
| Answer» | |
| 14. |
Silicon |
| Answer» Silicon is element with atomic no.14 in periodic table. | |
| 15. |
What do you mean by polarisation capability |
| Answer» | |
| 16. |
Extesive and intensive properties in thermodynamics |
| Answer» Extensive- depends on QuantityIntensive-independepnt of quantity | |
| 17. |
why liquid diffuse slowly as compared to gases? |
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Answer» Due to their large inter molecular force Because gases molecule are not closed as compare to liquid so due to more free molecule gases diffused more faster than liquid |
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| 18. |
why liquid hydrogen is stored in metallic hydrides |
| Answer» | |
| 19. |
Periodicity? |
| Answer» In chemistry the elements that occur after a particular period This was the name introduced by Newland during his discovery of elements to make periodic table | |
| 20. |
What do you mean by dual nature of electron? |
| Answer» Particle nature, wave nature | |
| 21. |
Write a reaction to show that aluminium is ampotheric in nature |
| Answer» | |
| 22. |
What isredox |
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Answer» Reaction in which oxidation and reduction occurs simultaneously. Reaction in which oxidation and reduction occurs simultaneously. |
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| 23. |
+I effect |
| Answer» When displacement of electron is away from the group attached to a compound,it is +I effect.eg alkyl group show +I effect | |
| 24. |
Short notes on silicone |
| Answer» Silicone is a tough artificial substance made from silicon which is used to make polishes,cosmetic and surgery | |
| 25. |
Is isomerisation rxn possible with haloalkanes explain |
| Answer» S , Haloalkanes with four or more carbon atoms form a type of isomerism | |
| 26. |
How many hyperconjugating structures are there in propene? |
| Answer» | |
| 27. |
What is borazine? Why it is known as inorganic benzene? |
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Answer» It is the compound formed in the reaction Of boric acid with excess of ammonia . It is known as inorganic benzene due to its structure. When diborane react with ammonia then it give borazene. It is also called inorganic benzene because its physical properties resemble with benzene and it is also iso-electronic with benzene |
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| 28. |
why NH3 has more dipole movement than NF3 |
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Answer» Because morebond angle Between H and F, F is more electronegative than H.So in NH3 electrons are pulled towards N whereas in NF3 the electrons are pulled towards F. In NH3 the pull of electrons is in the direction of resultant dipole which makes it have more dipole moment than NF3 |
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| 29. |
Why in hydrogen spectrum different lines are obtained although it contains only one electron? |
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Answer» It is because this spectrum is not made by only 1 hydrogen. It is made by many hydrogen atoms in which each election got excited to different levels thus we get many lines in hydrogen spectrum number of electrons are not responsible for that |
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| 30. |
Name any two radioactive s-block elements |
| Answer» Francium and radium | |
| 31. |
Suggest me best book for organic chemistry |
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Answer» Ncert For JEE- P.Bahadur, GRB Books, Prakash Publications |
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| 32. |
So is electropositivw |
| Answer» | |
| 33. |
Why ionization enthalpy of boron is lesser than berrylium ? |
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Answer» Because iffective nuclear charge on last electron of boron is less due to which it is easy to remove electron from last shell of boron than beryllium and thus ionization energy of boron is less than berrylium beryllium has fully filled electrons and half fill & fully filled are more stable |
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| 34. |
bhasha Hindi chahiye |
| Answer» | |
| 35. |
Born Haber cycle |
| Answer» Production of ammonia is by born Haber cycle.N2+3H2 --- 2NH3 | |
| 36. |
What is the rate forward reaction is at equilibrium |
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| Answer» | \t\t\tOne is heated in the presence of excess of oxygen or air.one is heated in the absence or limited supply of oxygen or airThis method is employed for sulphide ores.This method is employed for carbonate ores.Sulphur dioxide is produced along with metal oxide.Carbon dioxide is produced along with metal oxide. Example: For the ores ZnS (sphalerite) and Cu2S (chalcocite), balanced equations for the roasting are: {tex}2ZnS+3O_2\\to2 ZnO+ 2SO_2{/tex} {tex}2 Cu_2S + 3O_2\\to 2 Cu_2O + 2 SO_2{/tex} Example:{tex} ZnCO_3\\to ZnO+ CO_2{/tex} \t
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| 37. |
When an alkali metal dissolves in liquid ammonia the solution can acquire different colours.why |
| Answer» | |
| 38. |
Big size Na/ Na+ |
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Answer» NA BECAUSE MORE CHARGE ON ANY CATION,LESS IS ITS SIZE Na has |
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| 39. |
Anhydrase BaO2 is not use for preparing h2O2 |
| Answer» | |
| 40. |
Explain what happen sodium with mercury with water |
| Answer» Chlorine is formed at the anode | |
| 41. |
What is the speed of electrons while revolving around the nucleus? |
| Answer» | |
| 42. |
Types of rxns in organic chemistry. explain |
| Answer» | |
| 43. |
Isomers of but-1-ene |
| Answer» CH3-CH2-CH=CH2. And. CH3-CH=CH-CH3. And. CH3-C(CH3)=CH2 | |
| 44. |
What is carbon monoxide poisoning |
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Answer» When we inhale oxygen in the presence of CO then O reaches haemoglobin The haemoglobin and CO combines together and form carboxyheamoglobin which is very poisonous and prevents the supply of oxygen to blood which may leads to death CO is poisnous because when it is inhaled it stick to hamaeglobin and prevent the blood to transfer oxygen to different parts of body which lead to suffocation and ultimately to death |
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| 45. |
Why lithium is lightest |
| Answer» Due to its small size | |
| 46. |
Why solution of Na2CO3 is alkaline |
| Answer» When na2co3 is added in water na and co3 is formed | |
| 47. |
what are carbo cation |
| Answer» R+ ions are called carbocation | |
| 48. |
Which of them is acidic and basic na^2o,al^2o^3,co^2,mgo,so^2 |
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Answer» sorry.. its Na2O &MgO are basic nd Al2O is amphoteric(both) while other acidic Na2O , Al2O, MgO are basic while other acidic |
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| 49. |
Ch4+h2o=co+3h2 |
| Answer» | |
| 50. |
What is polarization? |
| Answer» The distortion of electron cloud of anion by cation is called polarisation | |