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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 diamond is strongest covelent bond |
| Answer» In diamond each carbon atom is bonded to four other carbon atoms which forms giant, three dimensional structure. Due to its giant structure diamond cannot easily heated up. Because giant covalent compound has many atom joined together by covalent bonds. To break all these bonds lot heat energy is required | |
| 2. |
Why oxygen has more inter electronic repulsion |
| Answer» | |
| 3. |
Systematic error |
| Answer» these error arises with regularity and tend to a direction either in positive or in negative | |
| 4. |
I need all subjects paper in Hindi because I belongs to Hindi medium |
| Answer» | |
| 5. |
Factors which effect the ionic charge |
| Answer» | |
| 6. |
no. of carbon atoms produced |
| Answer» | |
| 7. |
How to calculate nutron in atomic mass |
| Answer» By simply subtracting total number of proton from atomic mass. | |
| 8. |
Why petrol rain do not fall |
| Answer» | |
| 9. |
What is stochiometry ? |
| Answer» Stoichiometry measures these quantitative relationships, and is used to determine the amount of products/reactants that are produced/needed in a given reaction. Describing the quantitative relationships among substances as they participate in chemical reactions is known as reaction stoichiometry. | |
| 10. |
Why are alkali metal not found in nature |
| Answer» Bc they are in the form of oxides and halides | |
| 11. |
Discovery of protons |
| Answer» Ernest rutherford | |
| 12. |
What is the value of ph+poh=14 |
| Answer» | |
| 13. |
Heisenberg incertinity principle |
| Answer» | |
| 14. |
Write. Formula for the following compoundsNiekel and sulphate |
| Answer» Nickel (II) sulphate: NiSO4 | |
| 15. |
What is solution of naco2 |
| Answer» Sodium carbonate (also known as washing soda, soda ash and soda crystals, and in the monohydrate form as crystal carbonate), Na2CO3, is the water-soluble sodium salt of carbonic acid. It most commonly occurs as a crystalline dehydrate, which readily effloresces to form a white powder, the monohydrate. Pure sodium carbonate is a white, odourless powder that is hygroscopic (absorbs moisture from the air). It has a strongly alkaline taste, and forms a moderately basic solution in water. | |
| 16. |
What is Chemical reactions. |
| Answer» | |
| 17. |
Hybridisation of C2H4 |
| Answer» | |
| 18. |
Convert acetic acid to propanoic acid |
| Answer» | |
| 19. |
What is quantum number |
| Answer» It is group of 4numbers which help in giving all information about an atom | |
| 20. |
What is rate of change of chemichal reaction?? |
| Answer» | |
| 21. |
Define the following terms molarity |
| Answer» Answer | |
| 22. |
How many electrons in an atom may have the following quantum number n= 4,l =0 |
| Answer» 2 | |
| 23. |
Explain why cations are smaller than corresponding anions. |
| Answer» Cations are always smaller than their parent atoms this is because they have lesser electrons, while their nuclear charge remains the same. The remaining electrons are, therefore held more tightly by the protons in the nucleus and thus their radii.are smaller than the parent atoms. This is opposite in case of anions. | |
| 24. |
What is ionization enthalpy |
| Answer» Dear friend, The quantitative measure of tendency of an element to lose electron is given by its ionization enthalpy. (NCERT) Explanation :By Ionization enthalpy we can measure the quantity of lose of electron of an element. Is it helpful tell me. | |
| 25. |
Why energy of Sigma 2pz molecular orbital is less than pi 2px molecular orbital of oxygen? |
| Answer» | |
| 26. |
What is theeaning of isolated |
| Answer» | |
| 27. |
What is isolated gaseuos atom |
|
Answer» Isolated gaseous atom means single atom of any element in gaseous form....E.g...H H atom of h2 This mean no any type of force of attraction between two atoms in gaseous state |
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| 28. |
What is the syllabus of UT 2 |
| Answer» | |
| 29. |
What is limiting reagent |
| Answer» The limiting reagent (or limiting reactant) in a chemical reaction is the substance that is totally consumed when the chemical reaction is complete. The amount of product formed is limited by this reagent, since the reaction cannot continue without it. | |
| 30. |
What is meant by quantisation??. |
| Answer» | |
| 31. |
HPO3 is possible compound? |
| Answer» No | |
| 32. |
formal charge ofCO3_ |
| Answer» | |
| 33. |
What does isolated gaseous atom mean |
| Answer» | |
| 34. |
What is an atomic no? |
| Answer» Atomic no. Is the no. Of protons in an atom. | |
| 35. |
Why structure of PCl5 is possible but not of NCl5 |
|
Answer» P (1s2 2s2 3s2 3p6) is able to expand its valency to 5 due to the presence of empty d orbitals and forms PCl5. Nitrogen doesent have ant empty d orbiatls, so it can have a maximum valency of 3. Because PCl5 is covalent compound whereas NCl5 is a ionic compound |
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| 36. |
What is electromagnetic radiation. |
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Answer» Electromagnetic radiation (EMR) is a kind of radiation including visible light, radio waves, gamma rays, and X-rays, in which electric and magnetic fields vary simultaneously. It consists\xa0of self-sustaining oscillating electric and magnetic fields at right angles to each other and to the direction of propagation. EMR does not require a supporting medium and travels through empty space at the speed of light. Electromagnetic radiation (EMR) is a kind of radiation including visible light, radio waves, gamma rays, and X-rays, in which electric and magnetic fields vary simultaneously. It consists\xa0of self-sustaining oscillating electric and magnetic fields at right angles to each other and to the direction of propagation. EMR does not require a supporting medium and travels through empty space at the speed of light\xa0 |
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| 37. |
What is P-51 bonds |
| Answer» | |
| 38. |
What is free state and combined state |
| Answer» | |
| 39. |
What is shrodinger\'s wave equation |
| Answer» | |
| 40. |
basic principle of organic chemistry |
| Answer» | |
| 41. |
What is spectra |
| Answer» | |
| 42. |
What is habou\'s process? |
| Answer» The Haber process, also called the Haber–Bosch process, is an artificial nitrogen fixation process and is the main industrial procedure for the production of ammonia today.The Haber Process combines nitrogen from the air with hydrogen derived mainly from natural gas (methane) into ammonia. The reaction is reversible and the production of ammonia is exothermic. The catalyst is actually slightly more complicated than pure iron. | |
| 43. |
Why second electron gain enthalpy of oxygen is positive |
| Answer» The second electron is added to the negatively charged oxygen atom and therefore more electron-electron repulsion. To overcome this repulsion energy has be supplied and hence it is positive. | |
| 44. |
What is diagonal relationship |
| Answer» | |
| 45. |
What is s block element |
| Answer» S block element are higly reducing agents | |
| 46. |
Do you think \'some basic concepts of chemistry\' important in terms of NEET or AIIMS? |
|
Answer» It is a basic physical chemistry chapter .It is important to various terms No... But its a basic chapter ...n one must know |
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| 47. |
What do you understand by limiting reagent |
| Answer» The limiting reagent (or limiting reactant) in a chemical reaction is the substance that is totally consumed when the chemical reaction is complete. The amount of product formed is limited by this reagent, since the reaction cannot continue without it. | |
| 48. |
CH3CH2CH2CH2 |
| Answer» C2H4+C2H5 | |
| 49. |
What do you mean by covlent radii? |
| Answer» Radii between the two conalent bond is known as convalent radii | |
| 50. |
calculate the no of moles in 1×10^23 molecules of co2 |
| Answer» 0.166 mole | |