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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. |
What is the ortho para postion of benjene |
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| 2. |
Please show blue print |
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| 3. |
What is valance bond theory |
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| 4. |
What is called as common ion effect |
| Answer» The reduction of the degree of dissociation of a salt by the addition of a common ion is known as common ion effect. | |
| 5. |
What are arenes |
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| 6. |
B2H6 |
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| 7. |
what is hunds rule.. |
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| 8. |
S i unit of mole and what is mole |
| Answer» A mole is the amount of a substance.The mole is the base unit of international system of units. | |
| 9. |
Discuss Dalton Atomic Theory and its limitations |
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| 10. |
What is cathode ray tube |
| Answer» The cathode ray tube is a vacuum tube that contains one or more electron guns and a phosphorescent screen, and is used to display images. It modulates, accelerates, and deflects electron beam onto the screen to create the images.A cathode ray tube (CRT) is a specialized vacuumtube in which images are produced when an electron beam strikes aphosphorescent surface. Most desktop computer displays make useof CRTs. The CRT in a computer display is similar to the picture tube in a television receiver. | |
| 11. |
Explain Heisenberg\'s uncertainty principle |
| Answer» Heisenberg\'s indeterminacy principle:It states that the more precisely the position of some particle is determined, the less precisely its momentum can be known, and vice versa.Heisenberg\'s Uncertainty Principle states that there is inherent uncertainty in the act of measuring a variable of a particle. Commonly applied to the position and momentum of a particle, the principle states that the more precisely the position is known the more uncertain the momentum is and vice versa. | |
| 12. |
Why is q+w is a state function |
| Answer» Chal bhagg | |
| 13. |
Why Hydrogen is considered as lightest element ??? |
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| 14. |
hyberdisation state kya hota hai yaar |
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| 15. |
Why dimerisation of compounds take place? |
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| 16. |
What is the fission of a covalent bond |
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| 17. |
Explain the term hydrogenation |
| Answer» Hydrogenation is a reduction reaction which results in an addition of hydrogen H2. If an organic compound is hydrogenated, it becomes more saturated.Hydrogenation is a chemical reaction between molecular hydrogen (H2) and another compound or element, usually in the presence of a catalyst such as nickel, palladium or platinum. The process is commonly employed to reduce or saturate organic compounds. | |
| 18. |
Explain elimination reaction with suitable example and give its mechanism |
| Answer» Elimination reaction :It is a type of organic reaction in which two substituents are removed from a molecule in either a one or two-step mechanism.[2] The one-step mechanism is known as the E2 reaction, and the two-step mechanism is known as the E1 reaction.Examples of E2 Reactions: All E2 reactions have two things in common: a good leaving group and a hydrogen atom on a carbon adjacent to the one with the leaving group. Alkyl halides and alcohols are the most common reactants in an E2 reaction.\xa0Alkyl halides undergo elimination to produce alkenes. E2 elimination from RX Alcohols undergo elimination to produce alkenes. E2 ROH Notice that E2 elimination of an alcohol uses acid, not base. In mechanism, the acid is used to make the -OH group into a better leaving group, which is water. The E2 Mechanism Here we see the mechanism of E2 elimination from an alkyl halide, RX. Bimolecular elimination occurs in a single, concerted step.E2 mechanism :This reaction works best when the halide is primary or secondary. As noted earlier, a base takes a proton (H+) from a carbon adjacent to the one with the X. The electrons that had formed the C-H bond are now used to make a new C-C pi bond. When the new bond forms, the leaving group leaves with its electron pair. Elimination of water from a primary alcohol is possible, but difficult. However, if it occurs it will use the E2 mechanism. Unimolecular elimination reactions, also called E1, use a different mechanism that involves a carbocation. Since primary carbocations rarely form, elimination of a primary alcohol will occur via E2 . | |
| 19. |
What are vander waal constants? and give their units. |
| Answer» There are two vanderwaal constants \'a\' and \'b\' . a stands for magnitude of attractive forces and b stands for excuded volume or Co volume . Unit of a is atm L2 mol-2 Unit of b is L mol-1 | |
| 20. |
What is fractional distillation in punjabi language |
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| 21. |
What is fractional distillation defination in punjabi language |
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| 22. |
How to determine ISO, neo, secondaryand tertiary functional groups |
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| 23. |
What is the population of India.? |
| Answer» The current population of India is 1.34 or 1.35 billions. | |
| 24. |
How to prepare baking powder? |
| Answer» Combine half a teaspoon of cream of tartar and quarter a teaspoon of bicarbonate of soda to prepare baking powder. | |
| 25. |
Can I know that what is the importance of organic chemistry |
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| 26. |
Calculate h+concertation |
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| 27. |
How many gram are contained in 1 gram atom of Na |
| Answer» 23. Grams | |
| 28. |
Why is NH3 is liquid and pH3 is a gas? |
| Answer» Because in NH3, there is hydrogen bond because of more electronegative element and hydrogen bond supports liquid nature of compound. | |
| 29. |
what is Afbau rule. |
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Answer» According to afbau principle the shell having low energy firstly they filled when they acquired their maximum quota the having high energy start filling According to Afbau principle the shell having low energy firstly they filled when they acquired their maximum quota the having high energy filled It is a rule which arrange the shell in increasing energy order. |
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| 30. |
S block element propite |
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| 31. |
Write the chemical formula for Calgon. |
| Answer» Sodium hexamata phosphate =Na6P6O18 | |
| 32. |
What were the expectations of rutherford,s nuclear model of atom |
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| 33. |
What is exeptation of rutherford s nuclear model of atom |
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| 34. |
Can you tell me about sp hybridization in alkyne |
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| 35. |
What is hydrolith |
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| 36. |
How i can learn all formulaes of class 11 |
| Answer» 1) read it 2) write it 10 times..? | |
| 37. |
What is viscosity????? Plzz define it .. but the language could understandable |
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| 38. |
Can sodium hydride be dissolved in water?justify |
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| 39. |
Why is there difference in reactivity of nitrogen and phosphorous |
| Answer» Because of the small size the nitrogen is reactive than phosphorus as they are electronegative though they belong to same group | |
| 40. |
Calculate the number of atoms in 32.0u of He. |
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| 41. |
What is the effect of temperature on viscosity? |
| Answer» Viscosity increase with temperature | |
| 42. |
Why does elemental hydrogen react with other substances slowly at room temperature |
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| 43. |
Who is the current election commissioner of India? |
| Answer» Nasim zaidi | |
| 44. |
Write difference between atom and molecule? |
| Answer» Indivisible part of matter is atom while combination of atoms is a molecule. | |
| 45. |
The expression of most probable speed of gaseous molecule is |
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| 46. |
What is critical temperature ? What is its significance |
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| 47. |
Why do water donot burn |
| Answer» The bond between hydrogen and oxygen in water molecule is very strong. Only oxygen atom has 2 lone paioxygen but it can\'t react with oxygen in atmosphere.hence it won\'t burn. | |
| 48. |
Anamoulous behavior |
| Answer» It means showing two properties at the same time | |
| 49. |
Why oxidation state of thalline is +1? |
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| 50. |
What is hooke\'s Law |
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Answer» K=1/2x^2 Hook say that strain directly proportional to stress |
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