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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. |
Which isotope of hydrogen does not contain neutron |
| Answer» Protium | |
| 2. |
Why hydrogen placed 1st group |
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Answer» Because hydrogen electronic confurigation 1s \' when hydrogem have only 1 electron outer most shell and hydrogen placed 1st group It has not been decided yet now that where to put hydrogen,it can put either in 1st or 17th group.since its chemical properties it is not put in 17th group... |
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| 3. |
Which is largest nork |
| Answer» | |
| 4. |
What is a adiabatic process |
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Answer» A process in which pressure, volume, temperature of system change but there is no exchange of heat energy between system and surrounding. So, Q=0 There is no heat exchange between system and surrounding It is a process were heat is not transferred between system and surrounding |
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| 5. |
Ch3ch2cl what happens in presence of alc.koH |
| Answer» | |
| 6. |
Why Cl2C: is an electrophile? |
| Answer» Carbon k pa\'s 8e- nahi hai iss liye | |
| 7. |
What are electrophilic addition reaction ? Explain with example |
| Answer» An\xa0electrophilic addition reaction can be described as an addition reaction in which a reactant with multiple bonds as in a double or triple bond undergoes has its\xa0π bond broken and two new σ bonds are formed. | |
| 8. |
What is the oxidation no of K in K2MnO4^+2 |
| Answer» Let K be \'x\' =>K2=2x=>2x+0+(-2×4)=2=>2x-8=2=>2x=10=>x=5i.e, oxidation number of k is +5 | |
| 9. |
BF3 doesn\'t have proton but still act as an acid why |
| Answer» Acc to Lewis, a substance is an acid only when its octet is not complete. Also, in BF3 its octet is not complete. Thus, BF3 act as an acid even it is not having a proton. Acc Lewis, is a substance is an acid only when the octet is not complete. | |
| 10. |
What is flehmings soln |
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Answer» Taan o apne aap ho gva Mne logout kr ditta brainly te Cartoons ?? Tne ibb tak mera pyaar dekha h.......meri aakad.....aur mera gussa nhi dekha h................jis din dikha diya ne bhul jaga sab kyane.....?? Baat krna toh dur ki baat h..... Chhore je mai duri bnan pe aagi ne.....taras jaga dekhn ne.... Brainly pe merti unfollow kyu kiya....??? Okh.... Yrr 3 din te baat na ho pa rhi kl pkka krenge Yrr 8 percent battery h chrgr ki data cable khrab h |
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| 11. |
What is the oxidation state of phosphorus |
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Answer» 3 5 |
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| 12. |
Shape of d orbital |
| Answer» | |
| 13. |
How the metallic character inc. on moving top to bottom in a group 13 boron family?? |
| Answer» | |
| 14. |
How to calculate the mass of a substance |
| Answer» | |
| 15. |
What is doubtnut concept |
| Answer» | |
| 16. |
Explain. E° for M2+(aq) + Ze M(s) (where, M = Ca, Sr or Ba) is nearly constant. |
| Answer» | |
| 17. |
Whaf is value of alpha in alkenes |
| Answer» | |
| 18. |
What are the properties of substance? |
| Answer» | |
| 19. |
896ml of a mixture of CO weigh 1.28g at NTP. Calculate the volume of CO2 in the mixture. |
| Answer» | |
| 20. |
Mixture of dilute NaOH in Al |
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Answer» Al(OH)3 + Na2 NALO2 |
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| 21. |
Will ph of water remain same at 4 degree Celsius and 25 degree Celsius |
| Answer» No its H+ concentration will decrease with decrease in temperature | |
| 22. |
Density of 3M solution of nacl in 1.25 g/ml calculate molality of the solution |
| Answer» | |
| 23. |
DDT |
| Answer» Dichloro diphenol tetra ethane | |
| 24. |
Define Markovnioff\'s rule |
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Answer» Negative part of addendum gets attached to that carbon atom which has lesser no. Of hydrogen atom HCL and other hydrogen halide are added to that part which C has less number of hydrogen According to this law the addition of halogen acid such as HCL, HBr etc,to unsymmetrical alkene occur such away that the negative part of halogen acid goes to that carbon atom of double bond which carry lesser number of hydrogen atom. Markonikov\'s rule |
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| 25. |
General formula of alkene is |
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Answer» CnH2n CnH2n |
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| 26. |
Commin ion effect |
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Answer» When a strong electrolyte is added to a weak electrolyte having a common ion then ionization of electrolyte decrease,this effect is called common ion effect The suppression of the degree of dissociation of a weak acid or base by the addition of the strong electrolyte is known as common in effect. |
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| 27. |
Why does SO3 act as a electrofile |
| Answer» Becz it is electronic loving species. It is deficient in electron and hence want to complete it\'s octate and come to stable nobel gas configuration | |
| 28. |
State Andrew\'s Experiment |
| Answer» | |
| 29. |
Define Hydrogen bond what are its types and give example |
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Answer» .....in hydrogen and flourine both have nehative charge but flourine is more neative so it will attract the hyroden\'s elctron and forms a postive charge in it . so this all about hyroden bond . and also hyroden bond is weeker then vander wall . so this is my point of view ....so i summerice it all Hydogen bond occur due to difference of polarity mens difference in charges i.e more negitively charge atom attract less negitive electon and a bond forms e.g hydrogen and flourine bond H—f in this The bond arrises due to the difference between the polarity of two atoms is called hydrogen bond... It is a type of dipole-dipole attraction.... HF,H2O etc. |
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| 30. |
Differences between SN1 and SN2 |
| Answer» What is SN? | |
| 31. |
Compare the structures of H2O and H2O2. |
| Answer» H2o has bent structure and h2o2 has non planar structure | |
| 32. |
What is ionization enthalphy |
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Answer» It amount of energy required to remove an electron from the isolated gases atom The minimum amount energy required to remove the most loosely bound electrons from an isolated gaseous atom to convert into gaseous cation is called ionization enthalpy |
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| 33. |
Write down the electronic configaration of Cu2+ Fe3+ Ni2+ Cr3+ |
| Answer» | |
| 34. |
What is P in gas laws? pressure exerted bythe gas or the pressure applied externally? |
| Answer» | |
| 35. |
Explanation of abode rays |
| Answer» The protons released from the ionisation of gas present in anode ray tube are known as anode ray.They r positively charged.They are known as anode rays bcoz they emit from the side of anode electrode | |
| 36. |
Lewis dot structure of cl2 |
| Answer» 7(2) ab bn skta h | |
| 37. |
Find total number of molecules atom electron in 1.5 mole of water. |
| Answer» 1.5×18×6.023×10power23 | |
| 38. |
What is the oxidation state of tin and lead |
| Answer» +4 oxidation for tin and +2 oxidation for lead. | |
| 39. |
Calculate the energy associated with first orbit of He.What is the radius of the orbit? |
| Answer» | |
| 40. |
What is the Number of angular nodes in 6d and 4d orbitals and why ? |
| Answer» | |
| 41. |
How to balance reactions |
| Answer» By hit nd trial method | |
| 42. |
Energy level diagram of No |
| Answer» | |
| 43. |
What is stable atom and unstable atom |
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Answer» The atom which has obtained its inert gas configuration is called stable atom nd tht who does nt are called unstable atom The atom which has its last orbital fulfilled with electrons are called stable atom and reverse is unstable atom |
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| 44. |
Number of electrons in one mole of methane |
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Answer» 6.022 × 10power 24 no. Of electrons in one mole of methane 10*avogadro no. as no. of electrons in 1 molecule of ch4 is 10 |
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| 45. |
Question paper of 2017-18 class 11 |
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Answer» Which school exam Hi because tomorrow is my exam of chemistry you have question paper of chemiatry |
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| 46. |
How many charge in coloumb in 1 Faraday |
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Answer» 9.65219 × 10⁴ coulombs 96500C |
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| 47. |
What is television picture tube |
| Answer» Discharge tube | |
| 48. |
what is the advantage of atomic cluster..? |
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Answer» ............ gjjvhj .. . Fun |
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| 49. |
How is the mole is related to the volume of gas? |
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Answer» No. If moles= volume of gas(l)/ 22.4 Please answer its urgent |
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| 50. |
How can we say that cathode ray was actually made up of subatomic particles???? |
| Answer» Mention any two provisions of article 48 with the reference to germany | |