Saved Bookmarks
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. |
Enlist layers of atmosphere |
| Answer» | |
| 2. |
Hybridisation of spcl5 |
| Answer» | |
| 3. |
What is the charge mass of electron? |
|
Answer» 9 x 10 ^(-28) The mass of electron is about {tex}\\frac{1}{{1840}}{/tex}\xa0of the mass of hydrogen. The absolute mass of an electron is {tex}9 \\times {10^{ - 28}}{/tex}\xa0gram. The absolute charge on an electron is coulomb of negative charge which is smallest, carried by any particle. Thus, it is taken as unit of negative charge. |
|
| 4. |
Molal elevation constant |
| Answer» Molal elevation constant is defined as increase in boiling point of the solvent, when one mole of\xa0solute\xa0is dissolved in 1000g of solvent.\xa0The elevation is proportional to the number of particles dissolved and given by\xa0{tex}\\style{font-family:\'Times New Roman\'}\\triangle T_b {/tex} = Kb m, where m is the molal concentration of solute. The constant Kb is the ebullioscopic constant of the solvent. | |
| 5. |
Find electronic configuration 47 Ag and find out the all quantum number for 46th element. |
| Answer» Jaisa hota h waise hi last me 4d^9 hogan =4 L =2m=0S = -1/2 | |
| 6. |
What is screening constant |
| Answer» The effective nuclear charge may be defined as the actual nuclear charge (Z) minus the screening effect caused by the electrons intervening between the nucleus and valence electron. Effective nuclear charge, Z* = Z - σ Where, Z= Atomic number, σ = Shielding or screening constant | |
| 7. |
Quantum theory in electronic Confgration |
| Answer» The quantum field theory, is a fundamental theory which describes nature at the smallest scales of energy levels of atoms and subatomic particles. | |
| 8. |
What is the value of Rh |
| Answer» Rydberg constant for hydrogen1.0973731568508 × 107 | |
| 9. |
A 25 w bulb release light ^ 0.57um calculate the no. Quanta release/sec. |
|
Answer» i think you got it there? i know the solution but i don\'t want to write it whole so go to site-"saralStudy.com" for answer |
|
| 10. |
Which of the following should be done in preparing 0.4 M Nacl from 100ml of 0.30 ml Nacl |
| Answer» | |
| 11. |
What is anisotropic behaviour? |
| Answer» | |
| 12. |
Balance cu+no3- +h+=cu^2+ + no+h2o |
| Answer» | |
| 13. |
What are tiny particles in electric radiation |
| Answer» | |
| 14. |
Molar mass of oxide of nitrogen is 46. Calculate the no. Of electrons in it? |
| Answer» | |
| 15. |
How can we classify and differenciate between thermodynamics in physics and chemistry ? |
| Answer» | |
| 16. |
Difference between atom and molecule |
|
Answer» Atoms are too small and cannot exist independently.two or more atoms combine to to form molecules which can exist idependently Atoms can only exist, but molecules are smallest partcle that can exist independently. |
|
| 17. |
Diff between accuracy and precision?? |
| Answer» Accuracy refers to how close measurements are to the "true" value, while precision refers to how close measurements are to each other.Maybe this example can help to further show the differences. Let’s talk potato chips! Suppose you’re a snack foods manufacturer producing 12 oz. bags of potato chips. You test the weight of the bags using a scale that measures the bags precisely (in other words, there is little variation in the measurements), but not accurately – measuring 13.2 oz., 13.33 oz., and 13.13 oz. for three samples.Or maybe the scale is accurate, measuring the three samples at 12.02 oz., 11.74 oz., and 12.43 oz., but not precise. In this case, the measurements have a larger variance, but the average of the measurements is very close to the target value of 12 oz.Or maybe your measurements are all over the place, with samples measuring at 11.64 oz., 12.35 oz., and 13.04 oz., in which case your scale may be neither accurate nor precise. | |
| 18. |
Calculate wave number and frequency of yellow radiation having wavelength 5800 angstrom? |
| Answer» Use formula c=v×Lamda | |
| 19. |
From where do we get natural fibres |
| Answer» Flax, jute and balsa | |
| 20. |
From whera do we get natural fibres |
| Answer» | |
| 21. |
Molecular mass of Io |
|
Answer» May be ur asking about molecular law?? lo?? |
|
| 22. |
Calculate the minority and morality of a solution containing 9.8g of H2so4 in 250 ml of solutions |
| Answer» E.f. of H2SO4=1×2+32+64=98Minority= moles of solute Volume of solution in l =9.8 ×1000 98Minority will be become 100 per Morality = 0.1 ×1000 (0.1 become no.of moles ) 240.2Morality = 240.2 per kg | |
| 23. |
How to find moles of potash alum |
| Answer» | |
| 24. |
What is bohra atomic model |
| Answer» | |
| 25. |
gyui? |
| Answer» | |
| 26. |
Sulphur trioxide is prepared by the following two reactions S8 +8O2- 8SO22SO2+ 8O2 - 2SO3 |
| Answer» | |
| 27. |
Mass of one atom of an element is 4.0× 10^-24 g this is equal to |
|
Answer» Please tell me Kaise Atomic mass of one atom = one mole |
|
| 28. |
Drawback of Rutherford model |
| Answer» Cannot explain hydrogen spectrumCannot explain the maxwell\'s electromagnetic theory | |
| 29. |
1ev=??joule |
| Answer» 1ev=1.602×10^-19j | |
| 30. |
What is mean by term co-ordinate number |
|
Answer» Co-ordinate no. Is the no. Of atoms attached to a focused atom in a lattice Don\'t know as trigonometry is going on |
|
| 31. |
How. Does. Elements classify. In. s, P. d, F. Block. In. Periodic table |
| Answer» | |
| 32. |
Suggest me a good reference book of chemistry for class 11 |
|
Answer» Pradeep and excellent. Pradeep publication , and S. L. ARORA Pardeep\'s and modern |
|
| 33. |
Hey friends . Good afternoon try to explain the best method to understand organic compounds |
| Answer» Yes it is correcy | |
| 34. |
Vapour |
| Answer» Evaporated from of water is known as vapour | |
| 35. |
Calculate the molality of h2so4 solution 49g of it dissolved in 500ml solution?????? |
| Answer» 49/98×5 | |
| 36. |
I am nnt able to solve mcqs of SOME BASIC CONCEPT OF CHEMISTRY what can i do |
| Answer» First you start from 9th class books. Because it is the base. When you should read books or something other you relate that topic to your own life. | |
| 37. |
How only structure affect organic chemistry |
| Answer» If structure is change whole solution and matter does not stable | |
| 38. |
Calculate the molality of 10% H2SO4 solutionPlease explain |
| Answer» Not possible | |
| 39. |
Law for formation of cuo and cu2o |
| Answer» Law of multiple proportion | |
| 40. |
Black body radiation |
| Answer» | |
| 41. |
Calculate the 4quantum no. For 5 electron of nitrogen shell |
| Answer» | |
| 42. |
How much quick lime is obtained from 25 g of CaCO3 ?? |
| Answer» We know that 100g ofcaco3=1mole Then 25g of caco3=0.25mole We also know that56g of quick lime=1mole then0.25mole will contain56*25/100=14g of quick lime. Thxxx | |
| 43. |
2,3-Dimethylbutanal IUPAC name ka bond line formula |
| Answer» | |
| 44. |
Which reference book is best for Chemistry |
|
Answer» " Op tandan "for physical chemistry Pardeep\'s chemistry |
|
| 45. |
Isopropyl alcohol |
| Answer» | |
| 46. |
Imp.of chemistry |
| Answer» | |
| 47. |
Calculate the percentage of water crystalline in blue vittiral |
| Answer» | |
| 48. |
What Is the ratio of atoms of hydrogen and carbon in a molecule of pentane ? |
|
Answer» 5:12 Pentane-C5H12Ratio-C:H -5:12 |
|
| 49. |
How many Na+ ions unit are present in 20 ml of 0.4 M and H3PO4??? |
| Answer» | |
| 50. |
10 gm of urea dissolve 500ml solution .calculate the molarity |
| Answer» | |