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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. |
derivation of ideal gas |
| Answer» Combine of charc\'s law and Boyle\'s law we get ideal gas law. The equation is PV=nRT.P - pressure,V - Volume,n - number of moles,R - Ideal gas constant, T- Temperature | |
| 2. |
Pridict the sign of ?H A liquid crystalines to solid |
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| 3. |
Orbit and Orbital |
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Answer» Orbital-. Maximum finding of electron Orbit- A path around which electrons revolve.Orbital- A space surrounding in which probability of finding electron is greater. |
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| 4. |
How can we determine the number of electron, protons and neutrons in the nuclei of Ba. |
| Answer» This nucleus has 56 protons and 137 − 56 = 81 neutrons.Explanation:Two numbers are used to identify a nucleus: Atomic number -- It is number of just protons in the nucleus. The atomic the number of protons determines the number of electrons as number of protons is always equal to number of electrons. Mass number- It\xa0is the number of protons plus neutrons. This is roughly proportional to the total mass of the atom. Mass number is also a key property of atoms because we need to know the masses of atoms to understand how a given amount of material we weigh out will react. When the element is barium, that means the aomic number is 56. "barium 137" means 56 protons. And the 137 for the mass number designates 137 total protons plus neutrons. To get just the number of neutrons you take the difference between protons and neutrons, thus 137 − 56 = 81 .\xa0 | |
| 5. |
How can we determine the number of electron, protons and neutrons in |
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| 6. |
How can we determine the number of electron protons and neut |
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| 7. |
which glass used in cathode ray experiment? |
| Answer» Vaccum tube.The cathode ray tube that Thomson used was on evacuated glass tube. | |
| 8. |
What is Modelung Constant? |
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| 9. |
Calculate the energy associated with the first orbit of He+.what is the radius of this orbit |
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| 10. |
Write the empirical formula of the compound having molecular formula C2H2,H3PO4 |
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| 11. |
What is iupac ?write iupace of NH3.NaOH |
| Answer» IUPAC stands for international union for pure and applied chemistryAmmonium Sodium Hydroxide | |
| 12. |
What is racemic mixture |
| Answer» A racemic mixture, or racemate has equal amounts of left- and right-handed enantiomers of a chiral molecule. The first known racemic mixture was racemic acid, which is a mixture of the two enantiomeric isomers of tartaric acid.A racemic mixture is a 50:50 mix of two enantiomers. No matter how many molecules are in a mixture, it is racemic if there are equal numbers of the two enantiomers | |
| 13. |
What is charles and boyle law? |
| Answer» Charles\'s law : When the pressure on a sample of a dry gas is held constant, the Kelvin temperature and the volume will be directly related.This directly proportional relationship can be written as:V ∝ TV/ T = k , where: V is the volume of the gas, T is the temperature of the gas (measured in kelvins), k is a constant.This law describes how a gas expands as the temperature increases; conversely, a decrease in temperature will lead to a decrease in volume.Boyle\'s law :The absolute pressure exerted by a given mass of an ideal gas is inversely proportional to the volume it occupies if the temperature and amount of gas remain unchanged within a closed system.Boyle\'s law can be stated asP ∝ 1/ V\xa0PV=k, where P is the pressure of the gas, V is the volume of the gas, and k is a constant.The equation states that product of pressure and volume is a constant for a given mass of confined gas as long as the temperature is constant.The equation shows that, as volume increases, the pressure of the gas decreases in proportion. Similarly, as volume decreases, the pressure of the gas increases. | |
| 14. |
write conjugate acid and base forNH3 |
| Answer» The conjugate acid of ammonia is the ammonium ion, NH4+ The conjugate base of any species is that species less a proton. Ammonia less a proton is the amide ion, NH2− | |
| 15. |
Is spontanéity and température directly proportional.. In case of endothermic reactions |
| Answer» I think yes, At high temperature endothermic reactions are spontenous but at low temperature they are not spontaneous.its written in NCERT | |
| 16. |
What is degree of freedom? |
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| 17. |
What is acids bases and salts? |
| Answer» Acids, bases and salts are three main categories of chemical compounds. They have certain definite properties which distinguish one class from the other.\xa0Bases: They are bitter in taste and soapy to touch. Sea water and detergents are some examples of substances that are basic. Many bases are oxide or hydroxide compounds of metals. Bases are compounds which yield hydroxide ion (OH-), when dissolved in water. Bases are corrosive in nature. ,show a pH value of more than 7.Example-NaOHAcid :It is a compound which yields hydrogen ion (H+), when dissolved in water. Acid is sour to the taste and corrosive in nature. The pH value for acids is less than 7. Generally, all acids readily react with metal to release hydrogen gas. For example, metal zinc reacts with hydrochloric acid to form zinc chloride and hydrogen gas.HCl is an acid.Salts:These are formed by the combination of acid and base through neutralization reaction. The acidic and basic nature of salts depends on the acid and base combined in neutralization reaction. The pH of a salt solution depends on the strength of acids and bases combined in the neutralization reaction.Acid Base Salt Example is NaCl. | |
| 18. |
Calculate the bond enthalpy of c=c in propene |
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| 19. |
Alkyl halid |
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| 20. |
Define fajans rule |
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| 21. |
Vapr Theory |
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| 22. |
How to find logarithm |
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| 23. |
What is equilibrium equation??✉??? |
| Answer» About which equation u r asking there are too many equation | |
| 24. |
Explain why proton exist in nucleus on the basis of heisenberg uncertainity principal? |
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| 25. |
What is the difference between reversible process and irreversible process. |
| Answer» \tReversible processIrreversible process(1) It is a slow process which goes through various smaller stages which maintains equilibrium between the system and the surroundings.(1) It is a comparatively fast process. Here, no equilibrium is maintained between the system and the surroundings.(2) Reversible processes can take place either in forward direction or in backward direction.(2) Irreversible processes can take place only in one direction.(3) Reversible process proceeds in smaller steps because the driving force is small.(3) Irreversible process proceeds in larger steps in comparison with reversible process because there is definite driving force required for the progress of the process.(4) Work done in a reversible process is greater than the work done in an irreversible process.(4) Work done in an irreversible process is always lower than the work done in an irreversible process.(5) A reversible process can be brought back to the initial state without making any change in the surroundings.(5) An irreversible process cannot be brought back to its initial state without making a change in the surroundings.\t | |
| 26. |
What is effective shielding of electon |
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| 27. |
If we continously heat a black body, after sometime will it become invisible to us? |
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Answer» No it will not no\xa0 |
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| 28. |
Lewis dot structure of co3 |
| Answer» Nsjxhdnlxfbfn | |
| 29. |
Why is electronic theory of valency?#chemical bonding |
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| 30. |
Why and Tony antoine lavoiser is called father of chemistry? |
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| 31. |
Wht is catenation |
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Answer» Self linking property of an atom It is a property of carbon,which allow to make strong bond |
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| 32. |
Resonance meaning |
| Answer» Obstruction offer | |
| 33. |
Explain the formation of hydrogen bond in ice? |
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| 34. |
How to calculate oxidation number |
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| 35. |
Show deltaG =-Wnonexpansion |
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| 36. |
What is capillary fall? |
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| 37. |
Difference between adibatic process isolated system |
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| 38. |
What do you mean by electron gain enthalpy |
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| 39. |
How many hydrogen bonded water molecules are associated in CuSO4.5H2O |
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| 40. |
What is thermodynamic |
| Answer» Conversation of heat into work | |
| 41. |
Is enthalpy is constant in universe |
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| 42. |
Process of making ice from liquid |
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Answer» Fusion Freezing |
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| 43. |
Hydrogen bonding notes |
| Answer» I recommend you to buy Lilly guide chemistry which has a very good notes good for studying. After studying u would be able to solve the sample papers. | |
| 44. |
What is d3s hybridization? |
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| 45. |
Why does molecule Ne2 fail to exist |
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Answer» We learn in chapter chemical bonding that Ne2 has 0 bond number that is why Ne 2 is Bcoz it have already complete its octate and it had 8 electron in its outer most shell so it do not want to react or combine with other atom.thats why ot do not exist. |
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| 46. |
Difference between ionization and dissociation |
| Answer» \tIonizationDissociationIonization is defined as the process in which new charged particles are producedDissociation is defined as the process in which a charged particle is separated from the existing compoundThis is an irreversible processThis is a reversible processThe compounds involved are polar covalent compoundsThe compounds involved are ionic compoundsThere is an involvement of covalent bondsThere is an involvement of ionic bonds\t | |
| 47. |
Difference between hydrolysis and hydridation |
| Answer» In an chemical reaction H2O used to break the bond called hydrolysis and in an chemical reaction H2O added to a molecule called hydration | |
| 48. |
How is q a path dependent function and q at constant pressure a path independent function? |
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| 49. |
Ideal gas |
| Answer» The gas which obey Boyle\'s law at all temp. and pressure. | |
| 50. |
Why the lead placed in 1st and 2nd group in increasing solubility product? |
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