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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. |
Neil bohr |
| Answer» Neil bohr was a danish scientist/physicist who contributed in the field of atomic structure and quantum theory. | |
| 2. |
What is unified mass |
| Answer» The unified atomic mass unit or dalton is a standard unit of mass that quantifies mass on an atomic or molecular scale . One unified atomic mass is approximately the mass of one nucleon and is numerically equivalent to 1g /mol | |
| 3. |
What is oxo acid in alkali metals |
| Answer» oxoacids are acids which contain oxygen .. it contain hydrogen,oxygen nd one other element.. having one hydrogen bond to oxygen which dissociates to produces hydrogen ion.. H+.. cation nd anion of the acids. | |
| 4. |
What is arihant theory |
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| 5. |
Solvay process |
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| 6. |
Charles lsw |
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Answer» In constant presaure Volume is directly praportional to density Volume is directly proportional to temp at constant pressure |
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| 7. |
Why Density Of Sodium is Higher than that of Potassium? Give Reason. |
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Answer» Due to small size of Na due to anamolus increase in size of potassium its density is less than sodium |
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| 8. |
What are congeners |
| Answer» elements of same group.example: Na is cogener of Li | |
| 9. |
What is total posible structural isomers of hexane |
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Answer» 6 5 |
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| 10. |
What is dipole dipole forces |
| Answer» These forces are strong forces which form between polar-polar molecules or non polar-non polar molecules | |
| 11. |
What is ostward dillution law |
| Answer» | |
| 12. |
Why in the presence of the heat HBr show free radical addition reaction not other reagents like HCl |
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| 13. |
What is lattice inthalpy |
| Answer» The amount of energy released when one mole of solid is formed by combination of two opposite charges | |
| 14. |
What happens. Whien borax is heated |
| Answer» Reaction will take place. | |
| 15. |
Why hydrogen place at a fixed position in the periodic table? |
| Answer» Because it shows dual nature Of metals and nonmetals was sometimes it takes electron and sometimes donate electron . | |
| 16. |
What is hydraid |
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| 17. |
How to know about the types of hybridisation |
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Answer» Steric no. = valence electrons +monovalently bonded atoms+negative charge-positive charge-------------------------------------------------------------------------------------- 2If steric no. Is 1 sp2_sp23 sp34 sp3dSo on Hybridisation is of three types sp ,sp2,sp3In sp hybridisation triple bond is present. In sp2 hybridisation double bond is present. In sp3 hybridisation single bond is present. |
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| 18. |
How to solve the numericals of ionic equilibrium? |
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| 19. |
What is puli\'s and hund\'s rule? |
| Answer» | |
| 20. |
How to calculate kc = e^(-5.568)using log table? |
| Answer» | |
| 21. |
What is the component of sublimation |
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| 22. |
What do you mean by jessiquens law |
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| 23. |
Why electronegativity increases from top to bottom in the case of Ga and Tl |
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| 24. |
Why Be and Mg dont give flame colouration |
| Answer» | |
| 25. |
Prepare 1,2 dibromoethane from ethanol |
| Answer» | |
| 26. |
What is hetrolytic cleavage |
| Answer» When a covalent bond joining two atoms a and b breaks in such a way that both the electrons are taken away by one of the bonded atoms . Then the mode of bond cleavage is called hetrolytic fission | |
| 27. |
Which species have negative value of Specific heat?a) Iceb) Waterc) Vapourd) Saturated vapour |
| Answer» Water | |
| 28. |
Which has more basic character Mg(OH) or Ba(OH) |
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Answer» Ba(oh) Ba(OH) |
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| 29. |
Why pRessUre cOoker iS uSed fOr cOokiNg? |
| Answer» | |
| 30. |
Why no3 has -1 charge |
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| 31. |
lewis base.? |
| Answer» molecules which can donate an electron pair are lewis bases | |
| 32. |
Hucke rule define |
| Answer» When a organic compound follows 4n+2π electrons rule and the compound is sp2hyberdised or planner then compound is said to be aromatic this is known as huckels rule | |
| 33. |
what is disproporation reaction |
| Answer» When only one compound in an reaction shows both oxidation and reduction is known as disproportionate reaction | |
| 34. |
Which reaction show that aluminum and gallium oxides are amphoteric. |
| Answer» | |
| 35. |
Inorganic chemistry |
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Answer» It we can study carbon and it\'s components All the elements in periodic table except carbon |
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| 36. |
kelvin method |
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| 37. |
What is the nature of cathode rays |
| Answer» i. They are negatively chargedii. They travel in a straight lineiii. They are deflected by both magnetic and electric fields | |
| 38. |
What is dynamics |
| Answer» Dynamics is the branch of applied mathematics (specifically classical mechanics) concerned with the study of forces and torques and their effect on motion, as opposed to kinematics, which studies the motion of objects without reference to its causes.Chemical dynamics is a field in which scientists study the rates and mechanisms of chemical reactions. It also involves the study of how energy is transferred among molecules as they undergo collisions in gas-phase or condensed-phase environments.Reaction dynamics is a field within physical chemistry, studying why chemical reactions occur, how to predict their behavior, and how to control them. | |
| 39. |
How can we liquify gases? |
| Answer» The gases can be converted into liquids by bringing its particles closer so atmospheric gases can be liquefied either by decreasing temperature or by increasing pressure.Linde\'s Process: Air is liquefied by the Linde process, in which air is alternately compressed, cooled, and expanded, each expansion results in a considerable reduction in temperature. With the lower temperature the molecules move more slowly and occupy less space, so the air changes phase to become liquid. | |
| 40. |
What is meant by lattice energy |
| Answer» | |
| 41. |
Molecular orbital theory |
| Answer» When two atoms approach together to form bonds then all the atomic orbitals combine together to form molecular orbitals. It is applicable for only diatomic molecules(molecule containing 2 atoms).If u want ans in more details reply me | |
| 42. |
Mot theory what. |
| Answer» | |
| 43. |
Why is the superoxide ion stable only in the presence of big elements? |
| Answer» Due stabilisation of large anion by large cation through lattice energy effects | |
| 44. |
Write the resonating structure of CH3COO and show the movement of electrons by curved arrow |
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| 45. |
Function of salt bridge |
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Answer» 1. Salt bridge maintains electrical neutrality within the internal circuit. 2. It prevents the cell from rapidly running its reaction to equilibrium. 1. It complete the internal circuit or internal system. 2. Maintain neutrality of system by migration of ion. 3. It provide elctric contact b/w two solution without mixing them...... ????☺ 1. It maintain the neutrality of the system. 2. It is complete the system. Flow of ions takes place through salt bridge .so as to make electroneutrality on baith half cells in daniel cell. |
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| 46. |
Define adiabatic work. |
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Answer» Delta Q is equal to zero which means change in heat is equal to zero and in the system there is no heat loss or gain this process is known as adiabatic work The process in which there is no transfer or exchange of heat occur |
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| 47. |
P-block contains metals or non metals and why? |
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Answer» Because p block contain electron in p sub shell and having high electronegativity P-block is the only block which contains all type of elements whether it is metal,non metal or metalloid. |
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| 48. |
Oxidation no. of Cl in CaOCl2 |
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Answer» +2 X=0 |
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| 49. |
Alkali metal |
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| 50. |
Alkali metal what |
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Answer» Group 1 element alkali metal. Any of the elements lithium, sodium, potassium, rubidium, caesium and francima occupying Group I of the periodic table .1.They are very reactive. 2. The atomic radius of these elements are increased one by one due to increasement in atomic number.3. The ionisation enthalpy of these elements decrease when we move up to down in the group becoz the atomic size is increased and easily remove electrons.4. Hydration enthalpy is inversely proportional to ionisation enthalpy.5. They form ionic compound.6. They have low melting and boiling point which decrease down the group becoz the size of metal increase. An alkali metal is any of the elements found in Group IA of the periodic table. Alkali metals are very reactive chemical species which readily lose their one valence electron to form ionic compounds with nonmetals. Examples: Lithium, Potassium, Cesium.The alkali metals are so called because reaction with water forms alkalies (i.e., strong bases capable of neutralizing acids). Alkali metal, any of the six chemical elements that make up Group 1 of the periodic table namely, lithium (Li), sodium (Na), potassium (K), rubidium (Rb), cesium (Cs), and francium (Fr).\xa0Sodium and potassium are the sixth and seventh most abundant of the elements. |
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