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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. |
How many moles of gold are present in 49.25 g of gold rod.(atomic mass of gold=197). |
| Answer» We know that here, 197g=1mole Then 1g=1/197moles So, 49.25g=4925/197*100=0.25moles | |
| 2. |
When we boil something then it changes to gaseous form but why an egg yolk converts to solid form |
| Answer» When an egg is heated or boiled , the proteins in the yolk Nd albumen are denatured. The existing bonds in the protein break Nd new bonds r formed. | |
| 3. |
Ddefine diffusion |
| Answer» Movement of substances from high concentration to the low concentration | |
| 4. |
What is avogadro number ? |
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Answer» 6.023 * 10^23 6.023×10^23 .it is no. Of particles or anything in one mole of subtance |
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| 5. |
What is hybridyzation |
| Answer» Mating between two interrelated species to produce offspring with desirable characters | |
| 6. |
Is commerce students are there |
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Answer» I am mathematics student I am also science student Yes i m commerce student I am science student |
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| 7. |
No of mole in 65g NA |
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Answer» It\'s v easy..... No. Of moles r 2.8260 2.82 somthing moles. No.of moles = given weight / molecular weight = 65/23 Easy |
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| 8. |
Calculate the volume occupied by 10^22 molecules of nitrogen gas |
| Answer» (10^22÷6.022*10^23)*22.4 | |
| 9. |
Importance of chemistry |
| Answer» Refer NCERT textbook | |
| 10. |
Best youtube channel for chemistry |
| Answer» | |
| 11. |
Atoms contain moles or moles contain atoms |
| Answer» 1 mole contain 6.022*10^23 atoms | |
| 12. |
Calculate the mass of one atom of calcium |
| Answer» | |
| 13. |
Why we don\'t need neutron in hydrogen atom |
| Answer» When an atom\'s nucleus has more than one proton, it needs a neutron to keep them bound together, as they naturally want to repel each other. Because a Hydrogen atom has only one proton, a neutron is simply unnecessary. It does not need one. | |
| 14. |
The value of kp at 300 k |
| Answer» | |
| 15. |
Difference between molar mass and molecular mass |
| Answer» Molar mass is the mass of 1 mole substance expressed in gram and molecular mass is the mass of one molecule expressed in amu. | |
| 16. |
calculate the molar mass of h2o |
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Answer» Mass of hydrogen=1Mass of oxygen=16.Given,H2O=1×2+16=2+16=18 18 |
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| 17. |
Components of electro magnetic waves |
| Answer» Frequency , wavelength ,rays such as uv rays and gamma rays ,light which is visible to us | |
| 18. |
Calculate the volume occupied by 10^22 molecules of a gas at 300k and 760mm pressure |
| Answer» | |
| 19. |
Represent the equation according to gay lussac law. NH3+HCL--NH4CL |
| Answer» | |
| 20. |
calculate the mass percent of different elements present in sodium sulphate (Na2SO4) |
| Answer» Na-32.3%S-22.5%O-45% | |
| 21. |
Define the word Quanta |
| Answer» | |
| 22. |
Define photo electric effect.. |
| Answer» | |
| 23. |
Balance given equation by partial equation methodNaOH + Cl2 → NaCl + NaClO3 + H2O |
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Answer» 3Cl2+6NaOH --> 5NaCl+NaClO3+3H2O Is anyone there |
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| 24. |
How many significant figures in 5×6.345 |
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Answer» 5 5 |
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| 25. |
What is the meaning of magnitude |
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Answer» Magnitude is measurement Abhigya u r wrong 9 is magnitude only metre is a unit Which has both number and unit Eg. 9meter |
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| 26. |
What do you mean by limiting reagent.? |
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Answer» anyone online please give me answer |
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| 27. |
What is rutherford model |
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Answer» Answer me The Rutherford model is a model of the atom devised by Ernest Rutherford. Rutherford directed the famous Geiger–Marsden experiment in 1909 which suggested, upon Rutherford\'s 1911 analysis, that J. J. Thomson\'s plum pudding model of the atom was incorrect. Rutherford\'s new model[1] for the atom, based on the experimental results, contained the new features of a relatively high central charge concentrated into a very small volume in comparison to the rest of the atom and with this central volume also containing the bulk of the atomic mass of the atom. This region would be known as the "nucleus" of the atom.If any query message |
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| 28. |
Explain the term Round Off. |
| Answer» The term Round off means to give an appropriate value so that it can be easily divisible by 2 or 5..(For example-- round off of 24 is 20).The no. To be round off Depends that the no. Is more than 5 or less than 5.If the no. Is less than five it would written in less than that no.(for example-- 19.4 is written as 19).Similarly if the no. Is more than 5 it would written in more than that no.(for example--19.6 is written as 20).I hope this will help you.thankyou. | |
| 29. |
What is Preciseness? |
| Answer» | |
| 30. |
Can anybody explain the deflection of isotopes in a discharge tube |
| Answer» | |
| 31. |
Describe the laws of Combination |
| Answer» | |
| 32. |
Dimensional analysis in ch 1 |
| Answer» | |
| 33. |
Chemical formula for Phenol |
| Answer» | |
| 34. |
Describe Reciprocal proportion |
| Answer» In this A andB combine with 3rd element with fixed mass and they make simple ratio . If A and B combine each with 3rd . | |
| 35. |
Describe the principles of analytical balance |
| Answer» | |
| 36. |
What are siginifant figures? |
| Answer» | |
| 37. |
What is stoichiometrystoichiometry? |
| Answer» | |
| 38. |
What fullform of NTP? |
| Answer» Its NORMAL TEMPERATURE AND PRESSURE | |
| 39. |
Vsepr structure of AsO3 3- Is it trigonal planar shape or pyramidal |
| Answer» | |
| 40. |
Any bwst book for chemistry other tha ncert ?? |
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Answer» G R B Best** |
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| 41. |
What is the nature of Potassium ferrocyanide [K4Fe(CN)6] salt. |
| Answer» | |
| 42. |
Model sample papers answers? |
| Answer» | |
| 43. |
What is monovalent atom |
| Answer» Whose valency is one | |
| 44. |
pls. give n umericals for more practice pls |
| Answer» Plz...tell me...... Which subject do Numerical of the subject | |
| 45. |
Hc vermae |
| Answer» It is a nice book of physics | |
| 46. |
Name the most metallic element in second period and non metallic element |
| Answer» Lithium n flourine | |
| 47. |
Best book ever for physical chemistry |
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Answer» Companion chemistry by SK Malhotra is best Arihant SL Arora U can follow dinesh. I think its the best All in one The concept of physics hc verma |
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| 48. |
What is emmision spectrum? |
| Answer» | |
| 49. |
10g of Nacl which mol of Na? |
| Answer» 1/5.85 | |
| 50. |
Give Mordern periodic law |
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Answer» The properties of the elements are the periodic function of their atomic number Modern Periodic Law of element may be defined as thee Physical and chemical proprties of the elements are periodic functions of their atomic no. |
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