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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. |
Write the product of ozonylysis of the alkene 1 phenyl but 1 new |
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| 2. |
Write the product of ozonalysis 1 phenyl but 1 new |
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| 3. |
The number of molecules in 89.6 litre of a gas at NTP are |
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| 4. |
What is thermochemistry |
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Answer» Sorry it\'s not MISS NIDHI MISERABLE it\'s MISS NIDHI MISHRA.It was a Misprint . I can\'t understand that why are you thanking me. Although I have given the answer to Miss Nidhi Miserable. Aapko 1000 thanks pragya The branch of chemistry which deals with the quantities of heat evolved or absorbed during chemical reactions is known as THERMO CHEMISTRY. The department of chemistry which deals with the study of heat and similar process is called thermochemistry. |
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| 5. |
The momentum of the radiation of wavelength 0.33nm is |
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| 6. |
What is bond enthalpy |
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Answer» Required energy to break bond ???☺ Bond enthalpy (also known as bond energy) is defined as the amount of energy required to break one mole of the stated bond. For example, the bond energy of a O-H single bond is 463 kJ/mol. This means that it requires 463 kJ of energy to break one mole of O-H bonds. |
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| 7. |
What is bond enthalpt |
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| 8. |
How many atoms are there in 1 mol |
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Answer» Avogadro number 6.022×10^23 6.022× 10^23 atoms |
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| 9. |
Why lithuim is highest reducing agent? |
| Answer» This can be shown by reduction potential due to very large hydration energy of small size lithium ion. But it becomes reverse in aqueous condition , it becomes lowest reducing agent. | |
| 10. |
Who is current speaker of rajya sabha |
| Answer» Venkaiah Naidu is the current speaker of rajya sabha. | |
| 11. |
What is oxidation number of As in As2S3 molecule. And how do you find it , please explain |
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| 12. |
How determine the see the compound this o.N is exiptional |
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| 13. |
how learn or remember all chapter |
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Answer» Like nisha Ji answer remember like film stories ??? Just understand the concepts then it will b easy to remember. |
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| 14. |
Plz provide lab manual too.That\'s all we need |
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| 15. |
What is vital force? |
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Answer» The force in organic compound It is a mysterious force found in organic compound |
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| 16. |
Identify Redox Reaction. |
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Answer» Combination of oxidation and reduction reaction The reaction which performed oxidation and reduction both called redo reaction |
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| 17. |
what is standard hydrogen electrode |
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| 18. |
Can anyone say some important formula in some basic concepts of chemistry |
| Answer» Molarity=no. of moles of solute/volume of solution in LMolality =no.of moles of solute /mass of solvent in kgMole fraction =no.of moles of solute /no. of moles of solution | |
| 19. |
Explain why is sodium less reactive than potassium |
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Answer» Ionization enthalpy of sodium is greater than potassium Reactivity decrease from moving down the group Thus, in potassium, the outermost electron is better shielded from the attractive force of the nucleus. It follows, therefore, that this outermost electron is more easily lost than it is in sodium, so potassium can be converted to ionic form more readily than sodium. Hence, potassium is more reactive than sodium. |
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| 20. |
What do you understand by the term autoprotolgsis? |
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| 21. |
What is inert pair effect |
| Answer» The inert-pair effect refers to the empirical observation that the heavier elements of groups 13–17 often have oxidation states that are lower by 2 than the maximum predicted for their group.For example, although an oxidation state of +3 is common for group 13 elements, the heaviest element in Group 13, thallium (Tl), is more likely to form compounds in which it has a +1 oxidation state.The inert pair effect says that the ns2 valence electrons of metallic elements, especially the 5s2 and 6s2 pairs that follow the second and third row of transition metals, are less reactive than would be expected based on periodic trends such as effective nuclear charge, atomic sizes, and ionization energies.In, Tl, Sn, Pb, Sb, Bi, and, Po do not always show their expected maximum oxidation states. Rather they form compounds in which their oxidation states are 2 less than what would be expected. | |
| 22. |
Rules of Nomenclature of compounds containing substituents other than Alkyl group..... |
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| 23. |
Structural isomers of a compound having the formula c5h8 ( 1 triple bond ) |
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Answer» Thanks 2- methyl butyne and 2, 3-di methylpropyne. |
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| 24. |
What does a mole represent |
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Answer» Molar mass and molecules present in it No. Of. Atoms |
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| 25. |
Why equilibrium is in dynamic in nature |
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| 26. |
What is the difference between valency and oxidation no.? |
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Answer» Valence is a combining capacity of an element and oxidn number 8s effective charge of element Valency is combining capacity of all but oxidation is combining capacity of oxygen |
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| 27. |
What do you mean by ISO and neo in chemistry |
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Answer» They compounds which have same formula but different chemical structure Iso and neo are the isomer of compound. Compound which have sama formulae but different structure are called isomers. C it is structure of ISO C. CC |
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| 28. |
Tricks to solve chemistry numericals |
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Answer» Hardwork and be bahubali ?? No trick to solve the numerical.just practice it.Everyday only 2-5 numerical solve.this is a trick please follow it. |
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| 29. |
Titration |
| Answer» Titration is the slow addition of one solution of a known concentration (called a titrant) to a known volume of another solution of unknown concentration until the reaction reaches neutralization, which is often indicated by a color. | |
| 30. |
What is solubility product |
| Answer» It is equal to the product of concentration of its ion in saturated sol. where each term is raised to power of its stoichiometric co-efficient | |
| 31. |
What is SOEP |
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| 32. |
How can we balance the redox reaction? |
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Answer» By have equal no. Of h and oh ions into both sides Simple |
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| 33. |
How hydogen peroxide acts in bleaching action |
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Answer» H2o2 ------ ::H2o + O (nascent oxygen) Due to the nascent oxygen ) |
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| 34. |
Calculate the no. Of molecules in3.4g of H2S? |
| Answer» 6.022×10^22 molecules | |
| 35. |
What is nodal surface |
| Answer» Nodal surface are the area on which we can\'t find an electron in an orbital or we can say that probability of finding electron is near to zero | |
| 36. |
What is hydrogen bonding?? |
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Answer» The electronegative bond of hydrogen with fluorine oxygen and nitrogen Bond of hydrogen with fluorine ,oxygen,nitrogen in a compound |
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| 37. |
what is hyperconjugation effect ? |
| Answer» This effect involve a d localisation of Sigma electron of she does a bond of an alkyl group directly attached to an atom of unsaturated system or to an unshared p-orbital that that dilocelisation of Sigma electron is called hyperconjugation effect as example CH3 Ch 2 CL | |
| 38. |
Mechanism of benzene to nitrobenzene |
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| 39. |
Signal relationship of berrilium |
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| 40. |
Digital relationship of berrilium |
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| 41. |
What is heavy water |
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Answer» They water which contain more hydrogen isotope Heavy water: water in which the hydrogen in the molecules is partly or wholly replaced by the isotope deuterium, used especially as a moderator in nuclear reactors.Heavy water is a form of water that contains a larger than normal amount of the hydrogen isotope deuterium, rather than the common hydrogen-1 isotope that makes up most of the hydrogen in normal water.Formula: D2O |
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| 42. |
Among CH3=CH-CH2-CHOH AND CH3=CH-CH2-CH2-CHOH which will lose OH group easily? |
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| 43. |
Why nacl is placed over ice |
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| 44. |
Application of taxol |
| Answer» Treatment of AIDS | |
| 45. |
What happen when 2-chloro butane is treated with sodium Matel in presence of dry ether |
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| 46. |
What is concentration quotient |
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| 47. |
Calculate the total number of electron present in 1.4g of dinitrogen gas |
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| 48. |
What is stock notation ? How we write themby giving ex.? |
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| 49. |
Chemical properties of water |
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Answer» Very nice pooja ????? \tHydrogen Bonds: Water is a polar molecule that tends to be slightly positive on the hydrogen side and slight negative on the oxygen side. The electrostatic bond between the positive hydrogen side of this molecule and other megative ions or polar molecules is called a hydrogen bond. Molecules and ions with which water forms hydrogen bonds (such as sodium chloride) are hydrophylic. On the other hand, Ions and molecules that do not form hydrogen bonds with water are hydrophobic.\tLiquidity at Room Temperature: At room temperature, most compounds with low molecular weights take gaseous form. With water, however, hydrogen bonding helps to keep it a liquid at room temperature. Kept relatively close together, the moluecules at room temperature are unable to dissipate sufficiently to form a gas. Temperatures of 212°F (or 100°C) are required to break the hydrogen bonds and convert liquid water into water vapor.\tChemical Reactions: When ionic compounds such as sodium chloride are added to water, hydrogen bonding will tend to pull those ionic compounds apart. This makes water a natural solvent. Once ionic compounds dissolve, their anions and cations circulate through the water allowing further reactions to occur. Thus, water also sponsors and facilitates chemical reactions.\tStable Temperatures: Water takes more heat to raise its temperature than other common compounds, since much of that heat is required to first break the hydrogen bonds. Water also retains heat, so its temperature falls slowly. This means that larger systems of water (such as the ocean or a body) tend to maintain more or less constant temperatures, which in turn helps the earth (and us) to maintain relatively constant temperatures.\tFreezing Point :At 32°F (or 0°C) and below, water molecules form hydrogen bonds in a chrystalline lattice structure. This bonding spaces the molecules a bit farther apart than usual, causing water to expand when it freezes. This results in ice being less dense than liquid water, which is why ice floats. Chemical formulaH2OMolar mass18.01528(33) g/molAppearanceWhite solid or almost colorless, transparent, with a slight hint of blue, crystalline solid or liquid[2]OdorNoneDensityLiquid:[3]0.9998396 g/mL at 0 °C0.9970474 g/mL at 25 °C0.961893 g/mL at 95 °CSolid:[citation needed]0.917 g/ml ≈ 57.2 lb/ft3Melting point0.00\xa0°C (32.00\xa0°F; 273.15\xa0K)\xa0[a]Boiling point99.98\xa0°C (211.96\xa0°F; 373.13\xa0K)\xa0[4][a]SolubilityPoorly soluble inhaloalkanes,aliphatic\xa0andaromatichydrocarbons,ethers.[5]\xa0Improved solubility incarboxylates,alcohols,\xa0ketones,amines. Miscible with\xa0methanol,\xa0propanol,isopropanol,\xa0glycerol,1,4-dioxane,tetrahydrofuran,acetaldehyde,dimethylformamide,dimethoxyethane,dimethyl sulfoxide.Vapor pressure3.1690 kilopascals or 0.031276\xa0atm[6]Acidity\xa0(pKa)13.995[7][b]Basicity\xa0(pKb)13.995Thermal conductivity0.6065 W/m·K[9]Refractive indexD)1.3330 (20°C)[10] |
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| 50. |
Balancing of acidic |
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