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. |
What is the general formula of Grignard reagent |
| Answer» | |
| 2. |
Important topic and eq in p block element |
| Answer» Borax silicate is most imp | |
| 3. |
Smog formation |
|
Answer» It is more harmful than smoke It is formed by combination of smoke and fog and hence called smog |
|
| 4. |
If anyone\'s chemistry exam is over please whatsapp me question paper Whatsapp no : 9540966845 |
|
Answer» Shivshant prasad plzz whatsapp me question paper on 9540966845 Mera chemistry test 1 ko hai My over |
|
| 5. |
What is hydration enthalpy ? |
| Answer» The heat energy released when new bonds are made between the ions and water molecules is known as the hydration enthalpy of the ion. | |
| 6. |
What is oxo-acids ? |
| Answer» An oxyacid, or oxoacid, is an acid that contains oxygen. Specifically, it is a compound that contains hydrogen, oxygen, and at least one other element, with at least one hydrogen. | |
| 7. |
Define aqueous tension? |
|
Answer» The partial pressure of the water vapour present in the moist gas. When the gas is colleced over the water, it becomes moist due to presence of small quantity of water vapour caused by evaporation. Tension by aqueous |
|
| 8. |
Convert ethanoic acid into benzene |
| Answer» Convert ethanoic acid to ethene and use carbon block or pd to convert to acetylene. Now use red hot fe to convert to benzene. | |
| 9. |
Why is benzene extra ordinarily stable though it contain three double bonds? |
| Answer» Due to its resonating power | |
| 10. |
About diamond structure |
| Answer» Structure of diamond: In diamond each carbon atom is tetrahedrally attached to four carbon atoms through four strong covalent bonds (Fig. 4.2).Thus no free electrons on carbon are left and all bonding electrons of the carbon atom are engaged. This strong covalent bonding in its structure makes it hardest natural substance and a non-conductor of electricity.Properties and uses:\xa0(i) Diamond is a hard substance and because of this hardness, it is used for making glass cutters and rock borers for drilling.(ii) It has a high refractive index and is therefore used as a precious gem for making jewellery etc.(iii) It is non-conductor of heat and electricity.(iv) It is chemically unreactive.(v) It is used for precision thermometers because of its extra ordinary sensitivity to heat rays.(vi) It is not affected by harmful radiations.\xa0 | |
| 11. |
Le chatters principle is what?? |
| Answer» If a system is in equilibrium is subjected to the change in conc.,temp., pressure, then it will proceed in that direction which tends to undo the change imposed. | |
| 12. |
Which has longest radius? covalent radius, van der Waal\'s radius, Metallic radius, Ionic radius. |
|
Answer» vanderwaal radius van der walls radius has longest radius. |
|
| 13. |
Most important topics of chemistry. |
|
Answer» Organic chemistry and hydrocarbons r very important and they both have a good weightage of nearly 20 marks Inert pair effect |
|
| 14. |
NH3 is liquid base but NH4+ is not why |
| Answer» | |
| 15. |
Explain how boiling point is related to its vapour pressure?? |
|
Answer» What????..... Relation have to be discussed here..... 100 c is there nobody who can answer this question?? |
|
| 16. |
calculate molarity of H2O2 solution which is marked as 30 volume |
| Answer» | |
| 17. |
Compare the size of Na atom with Na+ion |
| Answer» Size of Na+ is smaller than Na bcz z effect iss increased | |
| 18. |
Why does a catalyst not effect the magnitude of equilibrium constant |
|
Answer» Meghna write answer is catalyst increases both forward and backward reaction so it overall affect is zero....? Catalyst do not change the magnitude of the equilibrium constant because it only helps in attaining the equilibrium quickly. It is only made to fast up the reaction. |
|
| 19. |
State Henry\'s law |
| Answer» According to Henry\'s law, the amount of gas dissolved in a given mass of solvent is directly proportional to the pressure. | |
| 20. |
Extensive heat |
| Answer» the process in which systems depends upon the quantity and states of matter is called extensive heat.ex internal energy,gibbes energy ,entropyetc | |
| 21. |
Out of benzene and toulene which will undergo nitration easily? |
|
Answer» Reason❓ Toulene |
|
| 22. |
What is boiling point?What is viscosity? |
| Answer» Viscosity is a internal fluid frictionBoiling point is that point where vapour pressure is equal to the atmospheric pressure | |
| 23. |
Which water or hcl a liquid or not? Jistofy |
| Answer» Liquid | |
| 24. |
How to calute a hybrdization |
|
Answer» It can be detemined by its shapeLinear -Sp,trigonal planar -Sp^2, tetrahedral-sp^3 By formula 1/2×valence electron ×monovalent ion - no of cation +no of anion BF3. Sigma bond is 3 and no loan pair is 0 Hybridization= 3+0 =3 Sp2 hybridized Hybridization=no. Of sigma bond +loan pair |
|
| 25. |
Name a compound each in which oxidation state is 0,+2,-2 |
|
Answer» Oxgen have -2 be have +2 What is the answer |
|
| 26. |
Blue print class 11 chemistry |
| Answer» What is dynamic equilibirium? | |
| 27. |
Write eloctronic configration of cu |
|
Answer» Bro listen mere ek question ka answer krde plz Acha Teri book to gum ho gyi h aur doosro ko book kholne ki advice de rha h 1s2 2s2 2p6 3s2 3p6 3d10 4s1 |
|
| 28. |
Hyper conjugation |
|
Answer» Delocalization of sigma electron In hyperconjugation the sigma electrons jump into the p orbital nd and participate in a resonance like effect. |
|
| 29. |
iupac name of elemtnet 120 |
|
Answer» Unbinilium Unbinilum |
|
| 30. |
How to convert benzene to m nitro bromobenzene |
| Answer» | |
| 31. |
What happens when we heat diborane with ammonia |
|
Answer» I don\'t know When B2H6\xa0reacts with excess of NH3\xa0at high temperature ,\xa0boron nitride (BN) is formed\xa0and H2\xa0is evolved.B2H6\xa0+ 2NH3(excess)\xa0→\xa02BN + 6H2 \xa0 |
|
| 32. |
Storage of acrylic needs no special care unlike woollen clothes . Why ? |
| Answer» | |
| 33. |
Could anyone please explain the law of mass action |
| Answer» | |
| 34. |
Configuration Mn2( |
| Answer» The electronic configuration of Mn2+ is 1s2 2s2 2p6 3s2 3p6 3d5 | |
| 35. |
Find the concentration given that pOH=9.7 |
| Answer» | |
| 36. |
Define hydro carbon |
| Answer» Hydrocarbons are the compound that contains carbon and hydrogen atom.Saturated hydrocarbon: Saturated hydrocarbons are that contain only single bonds between carbon atoms.General formula CnH2n+2example methane, ethane etc.unsaturated hydrocarbons that contain double or even triple bonds between the carbon atoms.General formula of double bond hydrocarbonCnH2nFor example\xa0;Ethene,\xa0propene etcGeneral formula of triple bond hydrocarbonCnH2n-2Ethyne, propyne etc | |
| 37. |
What are the degenerated orbitals |
| Answer» | |
| 38. |
How will u separate ether from water |
| Answer» Ether &water doesn\'t mix with each other.Even if u mixed then they quickly separate to each other and ether form a layer | |
| 39. |
Write the electron dot structure of 4th member of homologous series of alkyne |
| Answer» | |
| 40. |
How can i get the solution of cbse last year paper of chemistry |
| Answer» Search on net | |
| 41. |
Give general electronic configurations of s,p,d&f block elements |
| Answer» ElementGeneral outer electronic configurations–block(alkali metals)ns1–2, where n = 2 – 7p–block(metals & non metals)ns2np1–6, where n = 2 – 6d–block(transition elements)(n–1) d1–10 ns0–2, where n = 4 – 7f–block(inner transition elements)(n–2)f1–14(n–1)d0–10ns2, where n = 6 – 7 | |
| 42. |
How to solve numerical |
|
Answer» By brain also ????? By hand copy and pen???? |
|
| 43. |
Convert but-2-ene into ethanoic acid |
| Answer» First ozonolysis should be done and you will get CH3CHO. On oxidation of this you will get CH3COOH | |
| 44. |
What is molecular orbital theory. |
|
Answer» Thanks The features of the Molecular orbital theory are provided below.\tDuring the filling of electrons into molecular orbitals, the orbitals with the lowest energy levels are always the first to be filled. This selective filling of lower energy orbitals is commonly referred to as the Aufbau Principle.\tIn the molecular orbital theory, each of the molecular orbitals formed can only accommodate up to two electrons that have opposite spin. This is also called the Pauli Exclusion Principle.\tWhen two molecular orbitals have the same energy levels, electron pairing can only occur when both of these orbitals have one electron. This rule is often called Hund’s rule.\tThe molecular orbitals like atomic orbitals are filled in accordance with the Aufbau principle, Pauli’s exclusion principle, and the Hund’s rule.\tThe energy levels of bonding molecular orbitals are always lower than those of anti-bonding molecular orbitals. This is because the electrons in the orbital are attracted by the nuclei in the case of bonding MOs whereas the nuclei repel each other in the case of the anti-bonding MOs. |
|
| 45. |
Chart of hybridization awith shape and geometry |
| Answer» First of all hybridization is based on no. of sigma bond.hybridization. - shape. - Bond angle.Sp³ - tetrahedral. - 109.5°.Sp² - trigonal planar. - 120°. Sp. - linear. - 180°. Orbitals involved : Sp³ - s + (p)³. : Sp² - s + (p)² : Sp - s + (p) | |
| 46. |
Difference between evaporation and vaporisation |
| Answer» Vapourization occur at 100 ° C while evapouration can occur at temperature lower than 100°C. Boiling of water is eg. of vaporization while evapouration of water in summer season from oceans is eg. of evapouration ..... | |
| 47. |
Practicals video of class 11 chemistry session 2018 and 2019 |
| Answer» how many electron are present in 16g of methane | |
| 48. |
Equilibrium kitne marks ka h? |
|
Answer» One marks ka hi toh difference hai....? Equilibrium came for 7 marks in my paper I think, ...Trigonometry ,straight lines , conic sections, permutation, A.P and G.P, ...etc...????? Highest marks ka konsa chapter h? 6 ......I think |
|
| 49. |
Why bcl5 is unstable |
| Answer» | |
| 50. |
Which one will dissolve faster in 100 ml of water ? Sodium or potassium. |
| Answer» | |