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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. |
Salts of nitrous acid are called? |
| Answer» | |
| 2. |
Calculate number of moles of carbon in 3 moles of C2H6 |
| Answer» 6 moles of carbon atom | |
| 3. |
No. Of moles in 44.8L of carbon dioxide at STP |
| Answer» | |
| 4. |
What is the si unit of lenght, mass &time |
| Answer» Metre , kilogram and second | |
| 5. |
What is the so unit of lenght mass &time |
| Answer» U mean si unit | |
| 6. |
What is the so unit of lenght, mass |
| Answer» | |
| 7. |
Write the iupac name of the following organic compound |
| Answer» | |
| 8. |
I need 11 chemistry practice papers answers for all 1,2,3 mark questions |
| Answer» Go to store and buy | |
| 9. |
What is uncertain in uncertainty principal |
| Answer» | |
| 10. |
Why black suspension of lead sulphide(pbs) on water decolourise on H2O2 |
| Answer» Lead sulphide (black suspension) on reaction with hydrogen peroxide forms lead sulphate and water. Lead sulphate as well as water are colourless, therefore lead sulphite decolourises on addition of hydrogen peroxide. PbS(s) + 4H2O2 (aq) → PbSO4 (s) + 4H2O (aq) | |
| 11. |
Uncertain and uncertainty |
| Answer» | |
| 12. |
calculate the energy associated with the first orbit of He+2 |
| Answer» | |
| 13. |
Which is best side book for chemistry? |
| Answer» Pradeep in these book is ncert as well as extra information for revesion | |
| 14. |
Find electrons protons and neutrons in NH3 |
| Answer» | |
| 15. |
Why does so3 act as an electrophile |
| Answer» | |
| 16. |
AgCl is white but AgI is yellow why? |
| Answer» AgCl is white while AgI is yellow in colour. As size of anion increases the polarisation increases and hence colour intensity of the compound increases. Hence AgCl forms white colour and AgI yellow colour. | |
| 17. |
Calculate the wavelength of the second line of lyman series in hydrogen spectra |
| Answer» | |
| 18. |
What is stoichiometric |
| Answer» | |
| 19. |
Define ionse radii |
| Answer» Ionic radius, rion, is the radius of an atom\'s ion in ionic crystals structure. Although neither atoms nor ions have sharp boundaries, they are sometimes treated as if they were hard spheres with radii such that the sum of ionic radii of the cation and anion gives the distance between the ions in a crystal lattice. | |
| 20. |
Difference between all types of crystalline solid |
| Answer» | |
| 21. |
What us meant by common ion effect |
| Answer» | |
| 22. |
What happen when acetylene is passed over red hot tube |
| Answer» | |
| 23. |
Calculate the number of electrons, proton and neutrons in 40k+ |
| Answer» | |
| 24. |
Compartment paper |
| Answer» | |
| 25. |
What is phenomenal |
| Answer» | |
| 26. |
Why should we keep hand in running water when concentrated sulphuric acid falls on it |
| Answer» | |
| 27. |
What is ppm in mass. |
| Answer» PPM [MASS] = mass of a component / total volume of solution * 10 power 6 | |
| 28. |
significant figure in 100 |
| Answer» 100 has only one significant figure . | |
| 29. |
What do you mean by saponification reaction |
|
Answer» When any salt sodium ,magnesium reacts with ethanoic acid it forms sodium ethnoate or magnesium ethnoate. The resulting process is called saponification reaction Reactions complets in few MIN oe HOURES and show the product is know as saponfication reaction |
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| 30. |
What is Gay Lussac\'s law of gaseous volume? |
| Answer» | |
| 31. |
What is the physical quantity |
|
Answer» A quantity which can be easily measured by direct as well as indirect method and is used to define various laws of physics Hlo ? physical quantity - it refers to the quantity of a substance which is big enough to see or touch , if I am wrong , please don\'t report Hello |
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| 32. |
An atom is smallest particle of matter |
|
Answer» Thanks dear Yes but it has 35 subatomic particles |
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| 33. |
i m in class 11 in kv school and i got supplementary in chemistry....wil th xam b tough??? |
| Answer» | |
| 34. |
Scope of chemistry |
| Answer» Nhi smjha | |
| 35. |
Define Scope of chemistry |
| Answer» Teri body ka total chemicals ka mechanism | |
| 36. |
How to calculate pH of a solution |
| Answer» pH is of any solution is a negative logarithmic of H+ ion concentration or H30+ concentration.pH=-log(H+) | |
| 37. |
Can books chaange in 2018-19 session... |
| Answer» Hello | |
| 38. |
Why ionic solid is hard |
|
Answer» Because of electrostatic force between the ions Because of strong ion-ion bond |
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| 39. |
What is the reson of ionic solid is hard |
| Answer» Ionic Solids are hard because they are formed by positively and negatively charged ions which are held by strong electrostatic force. | |
| 40. |
Best reference book for chemistry |
|
Answer» Pradeep, is best one pardeep publication ☺☺ Pradeep Publication ncert |
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| 41. |
Show calculation on how to find number of protons in 2.2mg of carbon dioxide |
| Answer» | |
| 42. |
I want class 10 result sample format for pre boards and boards pls answer soon |
|
Answer» I want to that how result of 10 is devided like. 60%of board exam and 40%of school i want to know the ratio of marks and preboard exam result is considered in main result or not. I did not understand ur question.. Hello |
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| 43. |
Dalton throry |
| Answer» | |
| 44. |
Convert 6.92 x 10^-7m into micro metre and angstroms |
| Answer» 6.92*10^3 amstrong0.692 micro.metres | |
| 45. |
Write the electronic configuration on Fe |
| Answer» The electronic configuration of Fe is 1s^2 2s^2 2p^6 3s^2 3p^6 4s^2 3d^6. | |
| 46. |
Is there any substance ,on boiling becomes freeze |
|
Answer» Haha nice ........ That was egg? Boil yourself, after some time you will be freezed. ??????Don\'t take it seriously. |
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| 47. |
Find the mass in 1 gm of silver |
| Answer» Mass of 1 gram of silver is 1 gram itself, no matter where ever you take it in the known universe. Additionally, The molar mass of silver is 107.9 g/mol.(rounding to 108). As 1 mole = 6.023 x 10^23 molecules (Avogadro\'s number), 108 g of Silver contains 6.023 x 10^23 molecules. | |
| 48. |
Any portion of chemistry deleted or added |
|
Answer» Hmm....meko bhi batana Please tell |
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| 49. |
Calculatet the mass of 1.2 gram atom of mg |
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Answer» 24 is mass of one mole which consists of 6.022*10²³ 24×1.2 |
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| 50. |
0.2gm Ato. Of mg=? |
| Answer» 6.023× 10^23÷ 24 ×0.2 | |