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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. |
Moles |
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| 2. |
what is the difference between VSEPR theory and molecular orbital theory? |
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| 3. |
Entropy of boiling egg |
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| 4. |
Density of 3M solution of nacl is 1.25g calculate molality |
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| 5. |
Calculate the enthalpy of formation of carbon mono oxide from the following dataC plus O2 gives co2 |
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| 6. |
Cracking |
| Answer» Hacking for bad works is called Cracking | |
| 7. |
Factors affecting electron gain enthalphy |
| Answer» #electron gain enthalpy is directly proportional to nuclear charge.# electron gain enthalpy is inversely proportional to atomic size. | |
| 8. |
Write the n e m values for 3s 2py 4p2 |
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| 9. |
Why oXYGEN is greater than nitogen? |
| Answer» If you have PRADEEP\'S CHEMISTRY THEN plz open your book Unit-3 concept of Variation of Atomic Radii in the Periodic table 2nd point .You can find your answer there. | |
| 10. |
What is the formula of hybridization? |
| Answer» H= 1/2(V +X -C +A)Here V is valance electron in central atom, X is monovalaent atom like as H,Cl ,J etc, C for cation and A for anion. | |
| 11. |
What is the difference between absorption spectrum and emission spectrum? |
| Answer» \xa0Emission and absorption spectrums are two different ways of viewing light of acontinuous spectrum.Emission spectrums show the wavelength of light being expressedby superposing bright lines in the location where the corresponding wavelengths wouldbe on the continuous spectrum.Emission spectrums are essentially blacked out in alllocations except where light is being expressed.Absorption spectrums are the opposite ofemission spectrums.The entire continuous spectrum is visible when light is beingexpressed, but the wavelengths of light that are being expressed is represented by blacked out slits of their corresponding wavelength on the continuous spectrum. | |
| 12. |
Why oxygen show larger size than nitrogen along period |
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| 13. |
What is valence bond theory? |
| Answer» Valence bond (VB) theory is one of basic theories, developed to explain chemical bonding. It focuses on how the atomic orbitals of the dissociated atoms combine to give individual chemical bonds when a molecule is formed.According to this theory a covalent bond is formed between the two atoms by the overlap of half filled valence atomic orbitals of each atom containing one unpaired electron. | |
| 14. |
Define avegrowth law |
| Answer» According to avegrowth law volume is directly proportional to (n) number of moles | |
| 15. |
Which is incorrect for the term of quntam no:-4D 6f 4g 3p 6d 5d 2s |
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Answer» 4g is incorrect. All are incorrect |
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| 16. |
Afbau principle |
| Answer» In the ground state, electrons are filled in the orbitals in the increasing order of their energies | |
| 17. |
Write the properties of elements which are common to them in group, period and block? |
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| 18. |
Do under highpressure multimolecular layer is formed on adsorbent in chemisorption |
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| 19. |
What is molar heat capacity |
| Answer» Molar heat capacity is the amount of heat required to raise the one mole of any substance by one degree | |
| 20. |
how many radical nodes there are in 3s shell |
| Answer» 2 | |
| 21. |
How to make chemistry practical |
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| 22. |
If density of water is 1g/ml then calclat it\'s density in si unit |
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| 23. |
What is the Bond length |
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Answer» The length between the two bonds is commonly known as bond length BD=1/BDE The length between two bond is called bond length |
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| 24. |
Why do ice has less density than water? |
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Answer» Because when water in liquid state change to solid state,the molecules are closely come together the surface area can decrease. During solidification due to vacant space formed between molecules cause low density |
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| 25. |
Liquid metal in pherodic table |
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Answer» Mercury. Mercury |
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| 26. |
What is the relationship between equilibrium constant,reaction quotient,and Gibbs energy |
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| 27. |
Radioactivity is in which chapter ? |
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| 28. |
Definition isote |
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| 29. |
What is the lowest value of n and l that allows g orbital to exist |
| Answer» 5 , 4 | |
| 30. |
Which method can be used to find out reductant/oxidant in a solution? Explain with an example |
| Answer» By ion electron method | |
| 31. |
Which topics i must cover just to clear my half yearly exams |
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| 32. |
Hybidation of so2 |
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| 33. |
Failures of Bohr\'s atomic model |
| Answer» Valid only for single electron speciesCouldn\'t explain zeeman and stark effect.Couldn\'t explain heinsberg uncertainty probably. | |
| 34. |
What is electronic configration of p |
| Answer» 1s2 2s2 2p6 3s2 3p3 | |
| 35. |
What to write in correction of ideal gas equation (known as vander waals equation correction)??? |
| Answer» Ideal gas equation=Pvm=RT and it\'s correction is written as (p+an^2/v^2)(v-nb)=nRT | |
| 36. |
Octat rule |
| Answer» According to octet rule any element gain eight electrons in their last sub-shell and gain electronic configuration of nearest noble gas | |
| 37. |
What is Lewis structure of hydrogen peroxide |
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| 38. |
The lightest metal known as |
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| 39. |
Nature of tea |
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| 40. |
Formal charge |
| Answer» A distribution of total charge is called formal charge | |
| 41. |
Tufest equation aver |
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| 42. |
Mole define |
| Answer» Mole is the amount of substance that contains as many particles as there are atoms in exactly 12g of carbon-12 isotope.OrMole is the amount of substance that contains avagadro number of particles. | |
| 43. |
Explain why ionisation energy of N is higher than oxygen. |
|
Answer» Because N is half filled and it is more stable then O thats why This causes free movement of electrons form 1st position to 2 or 3 (electrons keep interchanging their position). ... So oxygen would readily loose an electron to attain a stable configuration that is half filled configuration. So first Ionization energy of nitrogen is more than first ionization energy of Oxygen. |
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| 44. |
Explain Graham\'s law of diffusion. |
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| 45. |
What is limiting reagent. ? |
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Answer» The substance that gets consumed completely in a chemical reaction is limiting reagent. The substance which get finish early in a chemical eqń The substance which is fully finished in a chemical reaction is known as limiting reagent |
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| 46. |
Define Schrodinger\'s equation |
| Answer» It is that equation on solving which we get total energy and wave function(psi) .and wave function are used to express atomic orbital.but when we talk about it\'s definition it is nothing but a mathematical eqation which describes the wave motion of electron in 3d space around nucleus. | |
| 47. |
Which compound have highest polarization effectLiCl,BeCl2,BCl3 |
| Answer» Becl3 | |
| 48. |
Does photoelectric effect obeys law of conservation? |
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Answer» Yes Yes, the total momentum and energy is conserved during this phenomenon, but...There is an interesting thing, during the process old photons brusts of and new photons are generated. |
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| 49. |
Ideol equation |
| Answer» PV:- nRT | |
| 50. |
Ideal equation |
| Answer» Ideal Gas Equation Is PV = nRT. | |