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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 metals are basis in nature |
| Answer» Metal oxides are basic in nature because they reacty with dil. acids to form salt and water. they also dissolve in water to form metal hydroxides which are alkaline in nature. these metal hydroxides release OH- ions, so they are basic. | |
| 2. |
what is the differenc between molecular mass and molar mass? |
| Answer» Molecular mass gives the mass of a single molecule (sum of the atomic masses in the molecule), whereas molar mass gives the average mass of the molecule (mass of Avogadro number of molecules).– Therefore, the molecular mass of a molecule containing heavier isotopes can be few units higher than the molar mass.– Otherwise, the value of the molar mass and molecular mass is quiet the same for a similar molecule; only the units are different. The unit of the molecular mass is amu, and the unit of the molar mass is gmol-1.– It is accurate to use the molecular mass in calculations of higher amounts of molecules than using the molar mass.– Molar mass is a measurement, which can be given to atoms, molecules or compounds. But molecular mass is only determined in the molecules. If it is the mass of an atom, a different terminology called atomic mass is used. | |
| 3. |
Why need of classification |
| Answer» During the discovery of more and more elements it was very difficult to study the elements and to learn about the properties of elements so some scientists like Mandleev arrange the elements so there is a need of classification | |
| 4. |
What is Rydberg formula |
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| 5. |
How can we calculate molarity? |
| Answer» | |
| 6. |
How do we draw hybridization diagram? |
| Answer» | |
| 7. |
What is pseudo noble gas configuration? |
| Answer» | |
| 8. |
What is dipole moment |
| Answer» Dipole moment is the magnitude of charge multiplied by distance between them. | |
| 9. |
Why cl is more electronegative than f ? |
| Answer» | |
| 10. |
Draw Lewis dot structure of CaF2? |
| Answer» | |
| 11. |
What is thomson thory ? And what he say about the an atom |
| Answer» J.J Thomson gave a model to explain the structure of the atom. He proposed that an atom looks like a plum pudding. In which the positive charge is uniformly distributed all over as like the base of the pudding and the negatively charged electrons are scattered like the embedded dry fruits all over the plum pudding | |
| 12. |
WHAT IS THE RESONANCE? |
| Answer» More than one Lewis structure is required to explain the bonding in a molecule is called resonance | |
| 13. |
What is bond order |
| Answer» No. of bonds between two atoms. | |
| 14. |
Oxidation number of NO³- |
| Answer» | |
| 15. |
Oxidation no of NO3- |
| Answer» Oxidation no. of N is +5 | |
| 16. |
Line emittion |
| Answer» | |
| 17. |
Define green house effects |
| Answer» | |
| 18. |
On the basis ofvsper theory predict the shape of following molecules 1 C |
| Answer» | |
| 19. |
Why is hybridization important . |
| Answer» | |
| 20. |
The ionization enthaply of nitrogen is more but oxygen is not |
| Answer» Because nitrogen has half filled electronic configuration and more energy is used to take 1 electron out from Shell | |
| 21. |
What are the important questions in. S block elements chapter |
| Answer» | |
| 22. |
Name 3 different types of projection formula |
| Answer» | |
| 23. |
Derive equation between ko & kc |
| Answer» | |
| 24. |
What is unitary theory? |
| Answer» | |
| 25. |
Why hybridigation |
| Answer» | |
| 26. |
Hybrdijation |
| Answer» Intermixing of atomic orbitals having similar energy is called hybridisation. | |
| 27. |
Calculate the Mass percent Of different Element present in sodium Sulphate na2so4 |
| Answer» | |
| 28. |
2. Name the type of band that exists in the crystal of aluminium. |
| Answer» | |
| 29. |
What is entahlpy |
| Answer» a thermodynamic quantity equivalent to the total heat content of a system. It is equal to the internal energy of the system plus the product of pressure and volume. | |
| 30. |
What is ven der waals forces and radius? |
| Answer» It is defined as one - half the distance between the nuclei of two identical non - bonded isolated atoms or two adjacent identical atoms belonging to two neighbouring molecules of an element in the solid state . | |
| 31. |
Q.11 of ncert of class 11th of state of matter.provide a correct explanation |
| Answer» | |
| 32. |
Ncert question 12 of exercise of state of matter class 11th.give a correct explanation |
| Answer» | |
| 33. |
Jee mains come from which book |
| Answer» | |
| 34. |
What is polar bond with suitable exsmple? |
| Answer» Polar bond:covalent bond formed between two dissimilar atom is called polar bond.This is because shared pair of electrons is more attracted towards more electronegative atom. e.g.H--ClCl is more electronegative then H.So cl having negative charge and H have positive charge. | |
| 35. |
Define symmetry |
| Answer» | |
| 36. |
Structure of diethylester |
| Answer» | |
| 37. |
What are the limitation of Plank\'s Quantum Theory? Power hai to answer Bata. |
| Answer» He couldn\'t explain the quantization of energy. | |
| 38. |
Why P show variable covalency? |
| Answer» Because phosphorus has vacant d-orbitals | |
| 39. |
Last year 2017-18 halfearly question paper |
| Answer» | |
| 40. |
Gaseous atom means |
| Answer» | |
| 41. |
How to find the ratio by mass of element sodium sulphate? |
| Answer» | |
| 42. |
How to learn and to get more number |
| Answer» | |
| 43. |
What is charl\'s law? Define in details |
| Answer» | |
| 44. |
What is dihydrogen |
| Answer» A molecule of two hydrogen atoms | |
| 45. |
What is fifth state of matter and also define it |
| Answer» Bohr-einstein condensate | |
| 46. |
Are the oxidation state and covalency of Al in (AlCl(H2O)5)2+ same |
| Answer» | |
| 47. |
Why carbon don\'t make 4 bond?? |
|
Answer» Carbon forms 4 bond but not quadrant bond as it would be highly unstable molecule if it does and may break to triple bond with gain of a little energy so little as negligible. On subatomic level, you might be more comfortable with this. So study on microscopic level....it would be fun to know that It does |
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| 48. |
What is bond strength |
| Answer» | |
| 49. |
oxidation state of BeCl3 |
| Answer» Oxidation state of Be is +3. and Cl is -1 | |
| 50. |
Value based questions thermodynamics |
| Answer» thermodyanmics property | |