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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 friedal crafts alkylation |
| Answer» | |
| 2. |
Fredal craft reaction |
| Answer» Benzene + methyl chloride = toluene + hydrogen chloride | |
| 3. |
What is AZT |
| Answer» Azidothymidine,used in treatment of AIDS. | |
| 4. |
Why basic character of oxides of alkaline earth metals decrease down the group ? |
| Answer» | |
| 5. |
Becl2 fumes in moist in air.explain. |
| Answer» BeCl2 has a bridged structure which is having weak forces . when it come contact with atmosphere, which decomposes to form hydrochloric acid at room temperature and this HCL produce fumes in air. | |
| 6. |
What is the lewis symbol of CO? |
| Answer» | |
| 7. |
Explain it ... Also. |
| Answer» | |
| 8. |
What is the molecular mass of glucose c6h12 o6 |
| Answer» 180g | |
| 9. |
Mole fraction? |
| Answer» Mole fraction is the no. of mole of a substance per unit the total number of moles | |
| 10. |
how will you separate propane from propyne |
| Answer» By halogenation in the presence of alcoholic KOH ...and Again it In presence of NA+and NH2- ions ..its gives of alkane...thank u | |
| 11. |
What are electrophlic" |
| Answer» An electrophile is a reagent attracted to electron. Electrophiles are positively charged or natural species having vacant orbital that are attached to an electron rich centre. | |
| 12. |
What is zeeman effect |
| Answer» Breaking of spectral lines in presence of magnetic field | |
| 13. |
Mechanism of nitration of benzene |
| Answer» | |
| 14. |
Why boron does not form b3 ions |
| Answer» | |
| 15. |
Why is HF less viscous then H2O? |
| Answer» | |
| 16. |
Why air bubbles are rises when water boiled. |
| Answer» Because boiling happens to each and every surface of water and water vapor from surfaces other than the free surface comes up due to boiling. This water vapor forms a spherical like structure inside the water which we see as air bubble | |
| 17. |
Difference between internal energy and enthalpy |
| Answer» P∆V or ∆nRT | |
| 18. |
Density of 3 molal solution ofNaOH is 1.11gmperml. Calculate its molarity. |
| Answer» | |
| 19. |
Assign the position of element having outer electronic configuration (n-2)f^7 (n-1)d^1 ns^2 for n=6 |
| Answer» For n = 2, 4f^7 5d^1 6s^2 Gadolinium (Gd) z=64 | |
| 20. |
Why sodium metal is stored under kerosene ? |
| Answer» As being very reactive it can react with air as well as water. | |
| 21. |
Explain the mechanisms of halogination of benzene |
| Answer» | |
| 22. |
What is water gas |
| Answer» CO + H2 also cqlled Syn Gas | |
| 23. |
Write down the reaction of Mg with liquid NH3 |
| Answer» | |
| 24. |
Define common ion effect |
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Answer» Refer your mother Refer to NCERT |
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| 25. |
Define commob ion effect |
| Answer» | |
| 26. |
When agno3 is added to ccl4 why white ppt is formed |
| Answer» | |
| 27. |
Explain wurtz reaxn |
| Answer» In wurtz reaction,negative part of addendum gets attached to the carbon with lessor no. of hydrogen and positive part with more no. of hydrogen.This happens between the double bonded carbon | |
| 28. |
What are the types of electrovalency? Explain. |
| Answer» | |
| 29. |
Explain why H3BO3 Exist as solid |
| Answer» | |
| 30. |
mechanism of clorination |
| Answer» | |
| 31. |
Resonance dipole moment on the basis of vseper theory |
| Answer» | |
| 32. |
What is frictiom |
| Answer» Friction is oppose the motion of a body | |
| 33. |
What can be done with waste products? |
| Answer» Waste management\xa0is the process of treating solid wastes and offers variety of solutions for recycling items that don’t belong to trash. It is about\xa0how garbage can be used as a valuable resource.\xa0Waste management is something that each and every household and business owner in the world needs. Waste management disposes of the products and substances that you have use in a safe and efficient manner. We can do following things from waste products1. Landfills2. Composting3. Crafts\xa0 | |
| 34. |
What is DAP? |
| Answer» Diammonia phosphate | |
| 35. |
Explain the principal of paper chromatography? |
| Answer» | |
| 36. |
Kp and kc for heterogeneous equilibrium |
| Answer» | |
| 37. |
why the radius of cations are smaller than the radius of neutral atoms |
| Answer» In the cations when an electron looses the electron electron repulsion decrease and hence the shielding effect decreases due to increase in effective nuclear charge due to which the nucleus attract the last shell more towards itself.Hence it results in decrease in the size of radius of a cation than the radius of neutral atom | |
| 38. |
Balance the redox reaction P4 + OH(-) — PH3 + H2PO2 |
| Answer» | |
| 39. |
How many values of m and s are possible for n+l=4 |
| Answer» Both have one value each according to puli\'s principle | |
| 40. |
Van dar wall equation fir n moles? |
| Answer» See ncert ...apne pas time nahi hai itna | |
| 41. |
What is electron defficient |
| Answer» The compound or element which is not fulfilled their octate are called electon deficient. | |
| 42. |
Aromatic compound |
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Answer» Aromatic hydrocarbon, commonly known as arenes are hydrocarbons containing sigma bonds and delocalized pi electrons between the carbon atoms in a ring. For example: benzene. They are known as aromatic due to their pleasant smell. Aromatic compounds are those compounds which follows huckel \' s rule, planar and complete delocalisation of pie electrons. |
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| 43. |
What happens when sodium metal is dropped in water |
| Answer» Na(OH) | |
| 44. |
Explain Dispersion forces or london forces |
| Answer» London force is a force acting between 2 non polar molecules | |
| 45. |
What is oxides ,peroxide , superoxide? |
| Answer» Oxides have +2 oxidation state,Peroxide +1 and Superoxide -1 | |
| 46. |
Explain why Be has higher ionisation enthalpy than B |
|
Answer» The main reason for this is that Be is stable due to its fully filled electron in s-orbital .On the other hand B has one electron in p-orbital .So, B will easily loose one of its electron than Be.[Be:1s^2 2s^2 B:1s^2 2s^2 3p^1][We know that half and fulfilled orbital are more stable tha less filled orbitals.] Good Explanation Chetna.... ionisation enthalpy means energy required to loose/take out electrons, it is higher for Be because it is more stable and has more nuclear charge due to which electrons are closely and strongly attached than in Boron i.e More energy will be required to pull out electrons from Be, so its ionisation energy is more. |
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| 47. |
What is hydrolith? |
| Answer» | |
| 48. |
Explain why some molecules have dipoli moment and same have not |
| Answer» Bs Us upar vale ki Mahima hai | |
| 49. |
Explain why boric acid is a monibasic acid? |
| Answer» | |
| 50. |
Calculate the mole fraction of solute if molality of solute in aqueous solution is 1 |
| Answer» | |