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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 aromatic character |
| Answer» Aromatic character is assocaited with compounds\xa0that contain conjugated planar ring systems with delocalized pi electron clouds instead of discrete alternating single and double bonds. Such compounds show chemistry that is totally different from both single or double bond. Typical aromatic compounds are benzene and toluene. | |
| 2. |
why will you show that H2O2 is a powerful oxidising agent |
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| 3. |
Why air is considered as a heterogeneous mixture? |
| Answer» Air is heterogeneous bcoz it has elements such as nitrogen ..hydrogen and others present non uniformly in our atmosphere. Hence it is heterogenous | |
| 4. |
Calculate the amount of co2 that could be produced when I mole of c is burnt in air |
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| 5. |
During thermal dissociation of gas the vopour density will decrease why ? |
| Answer» Vapour density is directly prportional to molar mass of the given gas. In a thermal dissociation of gas, since the product will have lesser molar mass than that of parent compound then vapour density will be decreased. | |
| 6. |
Why halogens, flourine is the best oxidant and hcl is the best reactant? |
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| 7. |
First law of thermodyanamics |
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Answer» Energy can neither be created nor it can be destroyed The energy of an isolated system remains constant. |
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| 8. |
Explain adiabatic process |
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Answer» No heat exchange during process ? Process in which neither heat enters the system nor leaves the system.In such a condition the system is thermally insulated from the surroundings. |
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| 9. |
What is a solid |
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Answer» Intermolecular forces are high Solid is that state of matter in which the molecules are held together by strong force of attraction. |
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| 10. |
Environment chemistry |
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| 11. |
Give me practical qestion |
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| 12. |
What is tritum. |
| Answer» Isotope of hydrogen in this mass number is 3 (2 neutron 1 proton) | |
| 13. |
Want Sample question papers |
| Answer» | |
| 14. |
3x ×4x = |
| Answer» 3x X 4x = 12x2 ,,,,,, power of x is 2,,,,,, which means squre of x | |
| 15. |
Why is electronic energy negative? |
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| 16. |
How can we determine the number of electron in Ba? |
| Answer» 56 (barium) Atomic number = number of proton = number of neutron | |
| 17. |
How does surface tension increase when increase with temperature |
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| 18. |
Conjugate acid |
| Answer» A conjugate acid, is a species formed by the reception of a proton by a base,it is a base with a hydrogen ion added to it.NH4+ is the conjugate acid to the base NH3 | |
| 19. |
The absolute enthalpy of neutralisation of the reaction for MgO(s): MgO+2HCl(aq)=MgCl² + H²O |
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| 20. |
Define ionic equilibrium |
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Answer» Equilibrium :which is established between the unionized molecules and the ions in the solution of weak electrolytes is called Ionic equilibrium .The condition in which the rate of dissociation of unionized molecules is equal to the rate of combination of the ion is known as equilibrium. Ionic equilibrium is the condition in which the rate of dissociation of non-ionised molecules is equal to the rate of combination of the ions. |
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| 21. |
Define mass% |
| Answer» (Mass of solute/mass of solution)×100 | |
| 22. |
How to complete chemistry In 2months if I use arihant only |
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| 23. |
Calculate the mass of 500ml of Oxygen gas at 27 degree Celsius and 740mmHg |
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| 24. |
While writing the S.I unit of force i.e newton it is necessary to write n in small letters. |
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Answer» Rules for Writing SI Unit1) When writing the name of the unit, the first letter of the unit should be in small case and it should be not written in capital case. Thus the unit of length should be written as ‘meter’ and not ‘Meter.’ For example it is correct to write 5 meter and not 5 Meter. Similarly, the unit of mass is written as kilogram and not Kilogram. Some of the units are written after the name of the scientist or other person, even these units should start with small letters. Thus the unit of power should be written as watt and not Watt. Similarly other units are newton, ampere, hertz etc.2) When writing the symbols for the SI units, if the unit is named after the person, the symbol should start with the capital letter. Thus the symbol for newton is written as N, for ampere it is A, for hertz, it is Hz, for kelvin it is K and so on. If the unit is not the name after the person, its symbol should start with the small letter. Thus symbol for kilogram is kg, for meter it is m, and so on. Yes its necessary |
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| 25. |
Whil |
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| 26. |
Why boiling point of H2O is higher than H2S |
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| 27. |
Formula for Energy in shell of hydrogen atom |
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| 28. |
Calculate the n factors of NaoH |
| Answer» n factor of base=acidity of baseAcidity =no. of OH- replacable ionthe n factors of NaOH =1since it has 1 OH- replacable ion. | |
| 29. |
State the formula of the conjugate base of :H3O+ and H2PO4- |
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| 30. |
Electronic confrugation of group no 3 |
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| 31. |
What are the reasons for the failure of the bohr model? |
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| 32. |
Why the liquid drop is spherical in shape |
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Answer» Due to surface tension Bcz liquids hv the tendency to have minimum surface area due to surface tension |
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| 33. |
Does electron revolve in an elliptical order around the nucleus? |
| Answer» The electrons hover around the nucleus in diffuse cloud-like waves, known as orbitals, that describe only the probability of finding the electron at different places within the atom. But those orbitals can combine to form a clump-like “wave packet” that contains the electrons and does orbit the nucleus like a planet. | |
| 34. |
Difine polarity |
| Answer» The polarity of a bond is the distribution of electrical charge over the atoms joined by the bond. While bonds between identical atoms (as in H2) are electrically uniform in the sense that both hydrogen atoms are electrically neutral, bonds between atoms of different elements are electrically inequivalent.In hydrogen chloride, for example, the hydrogen atom is slightly positively charged whereas the chlorine atom is slightly negatively charged. The slight electrical charges on dissimilar atoms are called partial charges, and the presence of partial charges signifies the occurrence of a polar bond. | |
| 35. |
Explain the properties of graphite and diamond |
| Answer» Graphite is a soft form of allotrope and diamond is a hardest form of allotrope. It is a 3-d structure | |
| 36. |
I want half yearly papers |
| Answer» You want 1st sem papers 11 science . I will send u on fb if u want.... | |
| 37. |
Predict the internal energy change for an isolated system |
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| 38. |
What is the role of chemistry in our life |
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| 39. |
Bohr calculate energy |
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| 40. |
What is the shape of ethane molecule |
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| 41. |
Iupac name of : ch3-o-ch2-o-ch2-n-ch2-s-ch2-o-ch3 |
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| 42. |
Calculate the percentage composition of each element in sodium sulphate. (Given Na=23,S=32,O= 16). |
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| 43. |
In which shell (K,L,M,N) h/2πis the angular momentum of the electron? |
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| 44. |
Please explain what is conjugate acid and base |
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| 45. |
What is composition of dark matter? Why dark matter can\'t seen by humans? |
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| 46. |
Observation of Practical exam |
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| 47. |
Is there any ideal gas.? |
| Answer» Most\xa0real gases\xa0behave qualitatively like an ideal gas. Many gases such as\xa0nitrogen,\xa0hydrogen,\xa0noble gases, and some heavier gases like\xa0carbon dioxide can be treated like ideal gases within reasonable tolerances. | |
| 48. |
Oxidation number of NaCO3 |
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| 49. |
Define mole fraction |
| Answer» The ratio of the number of moles of a given component of a mixture to the total number of moles of all the components is called mole fraction | |
| 50. |
Calculate the number of Sigma and Pi bond in napthalene |
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