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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. |
Hybridisation examples |
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| 2. |
What happen when borax is heated?? |
| Answer» When borax is heated it losses water. After this it converts into a transparent liquid .. | |
| 3. |
Write the vander waal\'s equation? |
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Answer» (P+an²/V²)(V-nb)=nRT where n= no of moles ,R=Gas constant (P+an^2/v^2) (v-nb) =nRt Distance b|w two atom of element /2.Or Dis of H-H/2 |
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| 4. |
Electron withdraw group atom in increasing |
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| 5. |
Pcl3+cl2=pcl5. If 5 moles of pcl5 dissociated then how much chlorine gas will be produced |
| Answer» 5 moles | |
| 6. |
Your suggestion not satisfying me. |
| Answer» But why | |
| 7. |
calculate the H+ ion concentration 1. Human blood fluid = 6.83 2. Human blood PH = 7.38 |
| Answer» I don\'t know the answer please tell me | |
| 8. |
Who discovered electrons |
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Answer» J.J.Thomson.. Ashish oh reallyyyy ?????? J.J Thomson I am |
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| 9. |
Draw the Lewis structure of co |
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| 10. |
What is polar covalent bond? |
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Answer» A compound have a bind up through covalent bonds and they difference in electronegativity, It is a type of covalent bond in which the electron pair is attracted by the highly electro negative |
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| 11. |
What is different between 3.0gm and 3.00gm |
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Answer» 3.0gm have 2 significant figures while 3.00gm have 3 significant figures. Precious and acurate. 3.00gm is a more precise measurement than 3.0gm. |
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| 12. |
Why we can not write OH2 stand of H2o |
| Answer» Because cation ions firstly and Anion ions are after in molecules or a compound. | |
| 13. |
When water is added to milk then it is pure or impure compound |
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Answer» It is pure compound Impure It is pure campound Pure compound |
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| 14. |
Is cannonical forms have real existence?? |
| Answer» No, they are just hypothetical (Imaginary) structures ...they don\'t have any real existance....They were made because of the change in bond lenghts of some chemical compounds.....I hope it might help you at any extent...???? | |
| 15. |
Three factors which can disturb state of equilibrium |
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Answer» Value which can be changed like pressure, volume,temperature etc & equillibrium can\'t be done in open space........ 1) depends on temperature 2) depends on volume 3) on pressure The factors which can disturb state of equilibrium are:1)it depends on temperature.2)it depends on volume.3)it depends on pressure. pressure, temperature, volume |
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| 16. |
Trans-2-Butene has higher melting point than cis-2-Butene. Why? |
| Answer» Trans-2-butene has higher melting point than cis isomer because mp depends on packing efficiency. Trans molecule have effective packing than cis-molecule as it is more symmetric. Cis molecule has less effective packing and replusion also exists between the bulky methyl groups which are on the same side, therefore less melting point. | |
| 17. |
what is the standard enthalpy of formation of NH3 gas |
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| 18. |
Draw the structure of ice |
| Answer» H2O ( s) | |
| 19. |
Draw the molecular orbital diagram /energy diagram of O2- |
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| 20. |
Describe free radical mechanism |
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| 21. |
Describe important reactions of hydrocarbons chapter |
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| 22. |
Explain hyperconjugation , inductive , resonance and mesomeric effect with the help of examples |
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| 23. |
Position isomers of alkene |
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| 24. |
Hunds rule in ncert language |
| Answer» Hund\'s rule states that Every orbital in a sublevel is singly occupied before any orbital is doubly occupied. All of the electrons in singly occupied orbitals have the same spin (to maximize total spin)Answer in NCERT language . | |
| 25. |
What is stoicmistry |
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| 26. |
Explain pyrolysis and aromatic hydrocarbon |
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| 27. |
IUPAC name of alkane |
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Answer» CnH2n+2 Cfufpg |
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| 28. |
What is difference between aldehyde and ketones |
| Answer» \tKetones and aldehydes are functional isomers\tKetones have functional group C=O while aldehydes have functional group CHO.\tThe first member of ketone series is Propanone while that of aldehyde is Methanal. | |
| 29. |
Define octate rule |
| Answer» Octet rule Atoms can combine either by transfer of valence electrons from one atom to another (gaining or losing) or by sharing of valence electrons in order to have an octet in their valence shell.Significance of octet rule It help to explain why different atom combine with each other to form ionic or covalent compounds. | |
| 30. |
How to calculate oxidation number of an element and compound |
| Answer» 1 -The oxidation number of a free element is always 0.2 -The oxidation number of a monatomic ion equals the charge of the ion.3 -The oxidation number of H is +1, but it is -1 in when combined with less electronegative elements.4 -The oxidation number of O in compounds is usually -2, but it is -1 in peroxides. | |
| 31. |
What are lewis bases |
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Answer» Neucleophiles are the Lewis bases Those which donate lone pairs |
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| 32. |
What is electrophiles? |
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Answer» electron deficient species They are electron loving species They always attack the substrate molecules at the site of Highest density They have strong tendency to attract electron from other sources and are also known as LEWIS ACID Electron loving species. Their attraction for electrons is due to the presence of an electron deficient atom in them. |
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| 33. |
The bond enthalpy btw C ----C bonds is ? |
| Answer» This is much stable bond . And bond energy is highest bond enthalpy | |
| 34. |
Define refox couple |
| Answer» A redox couple is defined as having together oxidised and reduced form of a substance taking part in Oxidation and Reduction Half Reaction | |
| 35. |
Why pbcl3 is a good oxidising agent |
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| 36. |
Is thermodynamics explain us the time at which reaction take place |
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| 37. |
What is iupsc name |
| Answer» Not iupsc that is (i.e) IUPAC names | |
| 38. |
Orangic chemistry |
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Answer» Study of carbon and it\'s compound What |
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| 39. |
What is the chemical name of H2S4O8 |
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| 40. |
Why does benzene show electrophilic substitution easily |
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Answer» BECAUSE IT HAVE DELOCALISED PI ELECTRONS Benzene is a planar molecule having delocalized electrons above and below the plane of ring. Hence, it is electron-rich. As a result, it is highly attractive to electron deficient species i.e., electrophiles . Therefore, it undergoes electrophilic substitution reactions very easily. |
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| 41. |
What is the Lewis structures for NO3- |
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Answer» ..:O-N=O: .. | .. :O: .. Nn |
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| 42. |
Define relationship between pH and PoH |
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Answer» pH+pOH=14 Ph meen presence of hydrogen and poh mean presence of hydrogen or oxygen |
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| 43. |
what is the atomic no. of iron |
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Answer» 26 26 26 26 |
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| 44. |
Prove that dx-0 and du-0 for an isothermal process |
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| 45. |
Henderson equation |
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| 46. |
How to get interest & a good determination in it. |
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Answer» by doing ur hw ...its enough...and also see ur ....syllabus ...and books ..u can automatically get engaged ...and strt to finish it...interestingly By getting knowledge pracically |
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| 47. |
What is the mass of NEUTRON |
| Answer» Mass of a neutron is 1.008930 amu (1.6753\xa0x\xa010–24g or 1.6753\xa0x\xa010–27\xa0kg)Neutron “A sub-atomic particle, which is a fundamental constituent of matter having mass approximately equal to the hydrogen atom and which is electrically neutral, is called a neutron”.\xa0 | |
| 48. |
2,3-diethylphenol |
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| 49. |
Help me in titration |
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| 50. |
How will you seperate the constituents of a sample of gun powder? |
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Answer» Sulphur, charcoal and potassium nitrate are the constituents of gunpowder. These can be separated as follows:Step 1: Dissolve the gunpowder in water. Only potassium nitrate will dissolve.Step2: Filter the solution. Filterate is the solution of potassium nitrate and residue contains sulphur and charcoal.Step3: Evaporate the filterate to vapourize water. Potassium nitrate will be left behind and is thus separated.Step4: Dissolve the residue in carbondisulphide which will dissolve sulphur but not charcoal. Filter the solution.Step5: Charcoal is separated as the residue.Step6: Evaporate the filterate to vapourize carbondisulphide. Crystals of sulphur are left behind. Water (H2O) needs to be added and then filtered to get the nitre (KNO3). The filtrate is nitre (KNO3). Then again the residue is dissolved in carbon disulphide (CS2) where sulphur (S) gets dissolved .By filtration we will get the sulphur(S) and Charcoal (C7H4O) as residue |
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