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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. |
What do you mean by diamagnetism |
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| 2. |
How and why change of proton to neutron and Vice a versa takes place????? |
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| 3. |
How much potassium cholrate should be heated to produce 2.24L of oxygen at NTP?\xa0 |
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| 4. |
Hydrogen spectrum |
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| 5. |
what is normality |
| Answer» Normality (N)\xa0is defined as the number of\xa0mole equivalents\xa0per\xa0liter\xa0of\xa0solution:normality = number of mole equivalents /1 L of solution | |
| 6. |
What is the structure of phenylpropane |
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| 7. |
What us the mass of 1mg of nitrogen? Explain |
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| 8. |
What is the aim of formal charge for the atoms??? |
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| 9. |
When beta decay occur? |
| Answer» Beta decay occurs\xa0when, in a nucleus with too many protons or too many neutrons, one of the protons or neutrons is transformed into the other. | |
| 10. |
What are coloured compounds and coloured ions compound???? |
| Answer» The vast majority of simple inorganic (e.g. sodium chloride) and organic compounds (e.g. ethanol) are colorless. Transition metal compounds\xa0are often colored because of transitions of electrons between d-orbitals\xa0of different energy. Organic compounds tend to be colored when there is extensive conjugation causing the energy gap between the HOMO and LUMO to\xa0decrease, bringing the absorption band from the UV to the visible region. Similarly, color is due to the energy absorbed by the compound, when an electron transitions from the HOMO to the LUMO | |
| 11. |
What is the formula for finding radius if an electron |
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| 12. |
I want ro see chemistry practical |
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| 13. |
Why it is difficult to measure the size of an atom? |
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| 14. |
Calculate the energy associated with the first orbit of He+ .What is the radius of this orbit? |
| Answer» R of He+=52.9(n*)/zPm1 pm=10power-6M52.9pm=52.9 * 10power-6MR=52.9 * 10power-6(1*)/2MR=26.45 * 10power-6ME=-2.18 * 10power-18(zsquare)/n*jE=-2.18*10power-18(2squre)/1squarejE=-2.18*10power-18(4)/1jE=-2.18*10 power-18 * 4jE= -8.72*10power-18 j | |
| 15. |
What is atomic spectra in brief?? |
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| 16. |
What do u mean by vander vall radius |
| Answer» This will be a best answer.so understand carefullyActually vanderwalls radius is radius between those two atom who make bonds to each other with no reason means their acter is already full but they make bond.so this bond is called vanderwall bond and the half length of the vanderwalls bond is vanderwall radius.Trust me plzz dont share this because it is a very high level knowledge and people of small knowledge dont understand this concept.Hope u understand. | |
| 17. |
Electron affinity depends on what? |
| Answer» It depends on atomic size From going acros the period it increase And moving down the group decreases | |
| 18. |
What is ionization enthapyand energy?? |
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Answer» Ionisation enthalpy is the minimum energy required to remove one electron from the outermost shell of an atom to form a cation in its gaseous state It is the minimum energy required to remove at least one electron from the valence shell . |
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| 19. |
Identity group no. Of element having atno. 119 |
| Answer» There are total 118 elementsU tell me who discovered 119 th elementThere is no 119 element | |
| 20. |
What happen to the size of an atom when it loose or gain electron ? |
| Answer» When it looses electron size decreaes and when gain electron size increses | |
| 21. |
Is there is vacuum along with the electron and nucleus inside the atom |
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| 22. |
Calculate the final molarity of 0.1 naoh if mix with 10 litre of water ? |
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| 23. |
What is critical temprature |
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| 24. |
scientific notation |
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| 25. |
find the volume strength of 1.6N H2O2 solution |
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| 26. |
why ionisation energy of oxygen is higher than the 2nd ionisation energy of nitrogen |
| Answer» Beacuse electron - electron repulsion | |
| 27. |
What is difference between quantum nd proton |
| Answer» The smallest packet of energy of any radiation is called a quantum whereas that of light is called photon. | |
| 28. |
If ionization energy of he2+ ion is 52 ev WHAT is ionization energy of H atom |
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| 29. |
dipole moment |
| Answer» \xa0DIPOLE MOMENT DEFINITIONA dipole moment\xa0\u200bis a measurement of the separation of two opposite electrical charges. Dipole moments are a vector\xa0quantity. The magnitude is equal to the charge multiplied by the distance between the charges and the direction is from negative charge to positive charge:μ = q · rwhere μ is the dipole moment, q is the magnitude of the separated charge, and r is the distance between the charges. | |
| 30. |
What is sterk and Zeeman effect |
| Answer» The Stark effect is the shifting and splitting of spectral lines of atoms and molecules due to presence of an external electric field. The amount of splitting or shifting is called the Stark splitting or Stark shift.The Zeeman effect, named after the Dutch physicist Pieter Zeeman, is the effect of splitting a spectral line into several components in the presence of a static magnetic field. It is analogous to the Stark effect, | |
| 31. |
Reaction of calcium carbide with heavy water gives |
| Answer» CaC2 + 2 H2O → C2H2 + Ca(OH)2 | |
| 32. |
The hybridisation of H2O2 |
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| 33. |
what is number of electron if principle quantum number is 3 and s -1÷2 |
| Answer» 6 | |
| 34. |
Define one mole |
| Answer» We can say that mole is a unit.Like a dozen banana = 12 bananasThen 1 mole a=6.022*10^23 awhere a denotes anything | |
| 35. |
Why dose the atomic radi decrease in group |
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| 36. |
Hybridisation of NH3 |
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| 37. |
Can a stable molecule have zero bond order justify |
| Answer» Generally stable or inert element has B.O=0 like He,Ne. | |
| 38. |
Can anyone tell me the site for video solutions of NCERT |
| Answer» myCBSEguide.com | |
| 39. |
Discuss the similarities between 1s and 2s orbitals |
| Answer» 1s and 2s orbitals\xa0are spherical in nature and can accommodate only two electrons. | |
| 40. |
What are isoelectronic species give examples? |
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Answer» The species sharing the same no. of electrons. e.g.Ne, Al3+, Mg2+, CO, N2 Isoelectronic species refers to the species which have same number of electrons. For e.g. CO and N2 are isoelectronic as both have same number of electrons i.e. 14. The atoms or ions having same number of electrons are called isoelectronic species. Eg Na+ ,Ne, F- The elements which Have Same atomic no. Are isoelectronic.Ne ,Al3+,Mg2+. |
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| 41. |
What is meaning of photon with defination? |
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| 42. |
How can we solve power questions |
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| 43. |
What is ligand |
| Answer» It is a ligand | |
| 44. |
How can we fill electrons in orbitals |
| Answer» According to Aufbau principal. in the increasing order of its energy lelel\xa0 | |
| 45. |
What is hybridization in chemistry |
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| 46. |
Which is better molarity or molality ? |
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Answer» Molality.As it doesn\'t change w.r.t to temp. and time compared to molarity Molality is better as it does not change with temperature and pressure |
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| 47. |
What is black body radiations? |
| Answer» An object which absorb all the radiations falling on the surface and emit it. A perfectly black body is good absorber and good emitter. | |
| 48. |
Define resounce ?in own words |
| Answer» Resonance: when a single structure cannot explain all properties, then two or more structures are drawn (canonical/resonating structure) for it. | |
| 49. |
why boric acid have basic its one |
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| 50. |
What is photo chemical effect |
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