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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. |
Explain carius method for estimation of halogen in an organic compound. |
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| 2. |
What is co |
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Answer» Carbon monoxide CO is the molecular formula for carbon monoxide. Carbon monoxide is a toxic gas, and continuous exposure to high concentrations of carbon monoxide can be fatal to both humans and animals.Carbon monoxide is often referred to as a senseless killer because it cannot be easily detected by human senses. The toxic gas is odorless, colorless and tasteless. When carbon monoxide is inhaled, it overpowers oxygen\'s ability to bind to hemoglobin molecules in red blood cells. This bond prevents the body and brain from receiving much-needed oxygen.The most common symptoms of carbon monoxide poisoning include nausea, dizziness and headaches. |
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| 3. |
Gasous state |
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| 4. |
Lewis dot structure H3po3 |
| Answer» Given in book of pradeep of chemistry of chapter 4 on page no 4/13 | |
| 5. |
What is the trend of electron gain enthalpy in periodic table. |
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| 6. |
Define balance electron balance method ? |
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| 7. |
What is bond length? |
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Answer» The distance between the nucleus of the bonded atoms. The distance between two the nuclei of 2 combining atom is called bond length |
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| 8. |
Who discovered proton Eugene goldestin or Rutherford |
| Answer» Eugen Goldstein discovered positively charged particles, but with no clear idea of why they existed or whether they had a wider role. Rutherford correctly identified them as being individually the nucleus of a hydrogen atom. And existing in all atomic nuclei. So, it is a matter of definitions who discovered the Proton. | |
| 9. |
What is photo electric effect |
| Answer» When a suitable frequency of light fall on the surface of a metal then the electrons present on the surface gain energy and terms in excited state and ejected from the surface of the metal.This phenomenon is called photo electric effect | |
| 10. |
Drive de broglie relatinship |
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| 11. |
Why sigma bond are stronger than pie? |
| Answer» Sigmpi bond form when bonding orbital or non bonding orbital of two atoms overlap each other rectilinearly or horizontally and in sigma bond electron density is high so it\'s stronger But in pi bond orbitals overlap each other vertically and in pi bond electron density in low so it\'s a weaker bond Sigma bond in px px orbitaland pi bond In pz pz orbital | |
| 12. |
How to solve log 10/2 |
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| 13. |
What is driving force? |
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| 14. |
How to find spectrum line? |
| Answer» n (n+1)/2 | |
| 15. |
Difference between mass & weight |
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Answer» Mass is a scalar quantity and weight is a vector quantity Mass is constant in different surroundings but weight changes..Unit of mass is Kg and of weight is Newton Mass is the constituents particle present in a body whereas weight is the effective gravitational force acting on a body |
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| 16. |
Why standard heat of formation of diamond is not zero through it is an element? |
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| 17. |
Why do tyres burst in summer season |
| Answer» Gases exert more on the walls of tyres as the kinetic energy of particles increases due to increase in temperature | |
| 18. |
WHAT IS VARIATION OF HEAT CAPACITY? |
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| 19. |
n 2 |
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| 20. |
Why ice is lighter than the water? |
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Answer» as water converts into H2O(ice) from H2O(water) its bond angle changes from 104 to 109 during change of state that\'s why ice expands hence its density decreases than water. Water expands on freezing and results in a decrease in density. Thus, ice has a lower density than that of water. Hence, it floats on water. |
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| 21. |
Bond energy |
| Answer» The energy which is released during the bond formation. | |
| 22. |
In thermodynamics why it is needed to consider one think as constant |
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| 23. |
What is H - bonding |
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Answer» A hydrogen bond is a the electrostatic attraction between two polar groups that occurs when a hydrogen (H) atom covalently bound to a highly electronegative atom such as nitrogen (N), oxygen (O), or fluorine (F) experiences the electrostatic field of another highly electronegative atom nearby.In simple words, consider the molecule H+-F-; here H will have a partial positive charge and F will be with partial negative charge. Now if another H-F molecule comes in their proximity then a H-bond will be formed. Please remember: H-bond is just an electrostatic attarction, there is no sharing of electrons here.H+-F- ------ H+-F- ----- H+-F-\xa0{------ are H bonds}H-bonds have a huge importance in modern day chemistry; as the organic molecules such as NH3, sugar are soluble in water because they have the ability to form H-bonds with water molecules.\xa0 Hydrogen bond is a bond which bonding with highly electronegative atom |
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| 24. |
What is VSEPR? |
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| 25. |
Prove 1st law of thermodynamics |
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| 26. |
what is hybridization? and it\'s configuration |
| Answer» Hybridisation is the process of mixing two or more different outer atomic orbital such as S, px py pz of an atom to form an equal number of equivalent orbitals | |
| 27. |
Why do lakes freeze from bottom? |
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| 28. |
How to study it? |
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| 29. |
What is hydration? |
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| 30. |
What is the meaning of titration |
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| 31. |
Define surface tension ? |
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| 32. |
Carbonation have 6 valence shell electron while carboanion have 8 valence electron |
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| 33. |
Electrons |
| Answer» Negatively charged particals revolves around the nucleus of an atom. | |
| 34. |
Mass of 5.6 litre of a gas at STP is 8g . calculate its molecular mass |
| Answer» The molar mass of 5.4 litre of gas at stp is 2g | |
| 35. |
What is huberdisation |
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Answer» Its hybridisation nd it means mixing of orbitals with slightly same energies It is a intermixing of properties(characters) of orbitals. |
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| 36. |
Potassium oxide is paramagnetic. Why? |
| Answer» bcoz k is +1 ,superoxide is -1.ko2has numb of remarkble physical and chemical properties | |
| 37. |
Explain why C2H2 has 2π bonds? |
| Answer» In c2h2 bonding orbital of px px form sigma bond but py py and pz pz bonding orbital form pi bond due to this c2h2 has one sigma and two pi bond | |
| 38. |
Resonance structure of NO2 |
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| 39. |
Differentiate molecule and compound? |
| Answer» A molecule is formed when two or more atoms join together chemically. A compound is a molecule that contains at least two different elements. All compounds are molecules but not all molecules are compounds.Molecular hydrogen (H2), molecular oxygen (O2) and molecular nitrogen (N2) are not compounds because each is composed of a single element. Water (H2O), carbon dioxide (CO2) and methane (CH4) are compounds because each is made from more than one element. | |
| 40. |
What is the mole concept |
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| 41. |
How is acid rain cause? |
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| 42. |
What is the structure of Ozone O3 |
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| 43. |
How fill the electron in their respective orbitals? |
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| 44. |
Chemical bonding |
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| 45. |
green house effects |
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| 46. |
Why energy of an electron is negative |
| Answer» Because the energy of a free electron is taken as zero and when the electron is present in an atom it loses energy. | |
| 47. |
What is a atom |
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Answer» Atom is the smallest structure of matter particles of matter is cld atom |
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| 48. |
What is negative electron gain enthalpy |
| Answer» The energy released when an electron is added to the neutral gaseous atom. | |
| 49. |
The reason,why scientist Hess discover the law i.e Hess law |
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| 50. |
How r me |
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Answer» Thnx No |
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