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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. |
How many p-orbitals participate in the hybridization of nitrogen in pyrrole? |
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Answer» How many p-orbitals participate in the hybridization of nitrogen in pyrrole? |
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| 2. |
Sodium carbonate reacts with SO2 in aqueous solution to give |
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Answer» Sodium carbonate reacts with SO2 in aqueous solution to give |
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| 3. |
What is intermideate image? |
| Answer» What is intermideate image? | |
| 4. |
what is the common name of trichloroacetic acid and trimethyl acetic acid? |
| Answer» what is the common name of trichloroacetic acid and trimethyl acetic acid? | |
| 5. |
Can a didentate ligand act also as an ambidentate ligand ? |
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Answer» Can a didentate ligand act also as an ambidentate ligand ? |
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| 6. |
What is observed when excess of ammonia is passed through an aqueous solution of lead nitrate? |
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Answer» What is observed when excess of ammonia is passed through an aqueous solution of lead nitrate? |
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| 7. |
A solution is separated from pure solvent by a semipermeablemembrane at 298 K. The difference in the height of thesolution and the solvent is 0.9 m. If Kf and freezing point ofthe solvent are 30 K kg mol1 and 250.3 K, respectively, thetemperature at which the solution freezes is:(a) 250.10 K(c) 250.20 K(ISAT 2010)(b) 250.25 K(d) 250.05 K |
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Answer» A solution is separated from pure solvent by a semipermeable membrane at 298 K. The difference in the height of the solution and the solvent is 0.9 m. If Kf and freezing point of the solvent are 30 K kg mol1 and 250.3 K, respectively, the temperature at which the solution freezes is: (a) 250.10 K (c) 250.20 K (ISAT 2010) (b) 250.25 K (d) 250.05 K |
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| 8. |
The ionic radii of Rb+ and I− are 1.46 and 2.16 oA. The coordination number for the cation is : |
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Answer» The ionic radii of Rb+ and I− are 1.46 and 2.16 oA. The coordination number for the cation is : |
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| 9. |
40. the diamagnetic ion is (1)Fe2+ (2)Sc2+ (3)Fe3+ (4)Zn2+ show the orbital diagram(by drawing orbitals as boxes) |
| Answer» 40. the diamagnetic ion is (1)Fe2+ (2)Sc2+ (3)Fe3+ (4)Zn2+ show the orbital diagram(by drawing orbitals as boxes) | |
| 10. |
What is the value of slope for the process PV2=C on the P- V diagram, for an ideal gas? |
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Answer» What is the value of slope for the process PV2=C on the P- V diagram, for an ideal gas? |
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| 11. |
Consider the following sequence of reactions.PhCH(CH3)2O2−−→HvAAaq. H2SO4−−−−−−→warmB+CThe products (B) and (C) are respectively: |
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Answer» Consider the following sequence of reactions. |
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| 12. |
For the reaction, AB(g)⇌A(g)+B(g), AB is 33% dissociated at total pressure of P. Therefore, P is related to KP as P=xKP. Find out the value of x. |
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Answer» For the reaction, AB(g)⇌A(g)+B(g), AB is 33% dissociated at total pressure of P. Therefore, P is related to KP as P=xKP. Find out the value of x. |
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| 13. |
Calculate the volume of 6.8 g of NH3 at standard temperature and pressure. |
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Answer» Calculate the volume of 6.8 g of NH3 at standard temperature and pressure. |
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| 14. |
Which one of the following trihalide oxidation state of metal is not +3? |
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Answer» Which one of the following trihalide oxidation state of metal is not +3? |
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| 15. |
Cos2/7+cos4/7+cos6/7= |
| Answer» Cos2/7+cos4/7+cos6/7= | |
| 16. |
Explain why inspite of nearly the same electronegativity, oxygen forms hydrogen bonding while chlorine does not. |
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Answer» Explain
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| 17. |
The correct order of increasing bond angles in the following triatomic species is |
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Answer» The correct order of increasing bond angles in the following triatomic species is |
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| 18. |
48.Which of the following is adsorbed maximum by activated charcoal? 1)CH4 2)N2 3)CO2 4)H2 |
| Answer» 48.Which of the following is adsorbed maximum by activated charcoal? 1)CH4 2)N2 3)CO2 4)H2 | |
| 19. |
Common names for all the structural isomers of octane and non ane |
| Answer» Common names for all the structural isomers of octane and non ane | |
| 20. |
The half - time period of a radioactive element is 140 days. After 650 days, one gram of the element will reduce to (J 1986) |
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Answer» The half - time period of a radioactive element is 140 days. After 650 days, one gram of the element will reduce to (J 1986) |
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| 21. |
The structures of (X) and (Y) are |
Answer»  The structures of (X) and (Y) are |
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| 22. |
How glasses have indefinite geometry which is property of amorphous solids ? |
| Answer» How glasses have indefinite geometry which is property of amorphous solids ? | |
| 23. |
89.What is the reactivity order of alkyl halides having different halogens towards SN2 mechanism. |
| Answer» 89.What is the reactivity order of alkyl halides having different halogens towards SN2 mechanism. | |
| 24. |
A hypothetical sub-atomic particle has a mass 49.1 times of an electron and a charge equal to that of a proton. Calculate the charge to mass ratio. |
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Answer» A hypothetical sub-atomic particle has a mass 49.1 times of an electron and a charge equal to that of a proton. Calculate the charge to mass ratio. |
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| 25. |
In the reaction sequence CHCl_3\overset{Air/hν}{→ X \overset{C_6H_6/AlCl_3(anh) excess}{→ Y}} The product Y is (1) COCl_2 (2) C_6H_5-CO-C_6H_5 (3) C_6H_5CHO (4) C_6H_5CO_{ |
| Answer» In the reaction sequence CHCl_3\overset{Air/hν}{→ X \overset{C_6H_6/AlCl_3(anh) excess}{→ Y}} The product Y is (1) COCl_2 (2) C_6H_5-CO-C_6H_5 (3) C_6H_5CHO (4) C_6H_5CO_{ | |
| 26. |
23. Cl2 changes to Cl- and ClO- in cold NaOH. What will be the equivalent wight of Cl2? |
| Answer» 23. Cl2 changes to Cl- and ClO- in cold NaOH. What will be the equivalent wight of Cl2? | |
| 27. |
The rate of diffusion of hydrogen and chlorine are in the ratio of 6:1. The density of chlorine as compared to that of hydrogen will be: |
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Answer» The rate of diffusion of hydrogen and chlorine are in the ratio of 6:1. The density of chlorine as compared to that of hydrogen will be: |
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| 28. |
50. Difference between q and H. Which one is correct H=U-w. Or. q = U - w i have seen both |
| Answer» 50. Difference between q and H. Which one is correct H=U-w. Or. q = U - w i have seen both | |
| 29. |
6. which is more stable? [cocn6]3- or [cocn6]2- |
| Answer» 6. which is more stable? [cocn6]3- or [cocn6]2- | |
| 30. |
What is the equivalent weight of a hydride if the equivalent weight of its oxide is 20 g? |
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Answer» What is the equivalent weight of a hydride if the equivalent weight of its oxide is 20 g? |
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| 31. |
BeCl2 exists as a polymer in: |
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Answer» BeCl2 exists as a polymer in: |
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| 32. |
PCI Fmolecule will be non-polar for what5 Xvalues of 'x'?(2) 2, 0 and 5(1) 2, 1 and 4(4) 2, 3 and 5(3) 3, 0 and 5 |
| Answer» PCI Fmolecule will be non-polar for what5 Xvalues of 'x'?(2) 2, 0 and 5(1) 2, 1 and 4(4) 2, 3 and 5(3) 3, 0 and 5 | |
| 33. |
On heating 4.9 g KClO3, its mass is reduced by0.384 g. Calculate the percentage of originalKClO3 sample, that has been decomposed. |
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Answer» On heating 4.9 g KClO3, its mass is reduced by 0.384 g. Calculate the percentage of original KClO3 sample, that has been decomposed. |
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| 34. |
If we plot a graph of freuency of radiation against the stopping potential of photoelectron, its slope would be equal to (1) 6.625×10^{-34} (2) 3.656×10^{12} (3) 2.414×10^{14} (4) 6.529×10^{18 |
| Answer» If we plot a graph of freuency of radiation against the stopping potential of photoelectron, its slope would be equal to (1) 6.625×10^{-34} (2) 3.656×10^{12} (3) 2.414×10^{14} (4) 6.529×10^{18 | |
| 35. |
Product [A] in the reaction: |
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Answer» Product [A] in the reaction:
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| 36. |
Two electrons occupying the same orbital are distinguished by |
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Answer» Two electrons occupying the same orbital are distinguished by |
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| 37. |
Half lives for Alpha and beta emissions of a radioactive material are 16 and 48 yrs respectively. when material decays giving alpha and beta emission simultaneously then time in which 3/4th of the material decays is |
| Answer» Half lives for Alpha and beta emissions of a radioactive material are 16 and 48 yrs respectively. when material decays giving alpha and beta emission simultaneously then time in which 3/4th of the material decays is | |
| 38. |
Which of the carbocations is stabilized by resonance? |
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Answer» Which of the carbocations is stabilized by resonance? |
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| 39. |
Which of the following reagents or process are suitable to distinguish CH3CHO and EtOH? |
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Answer» Which of the following reagents or process are suitable to distinguish CH3CHO and EtOH? |
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| 40. |
16. how to calculate total no of resonating structures in any given compound be like anthracene or napthalene |
| Answer» 16. how to calculate total no of resonating structures in any given compound be like anthracene or napthalene | |
| 41. |
Predict the products of the given reaction. |
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Answer» Predict the products of the given reaction. |
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| 42. |
A bomb of mass 4 m at rest, explodes into three pieces of masses in the ratio 1:1:2. The two identical pieces fly in mutually perpendicular directions, each with a velocity v. The third piece is making an angle α with the line of motion of each piece. Find α |
| Answer» A bomb of mass 4 m at rest, explodes into three pieces of masses in the ratio 1:1:2. The two identical pieces fly in mutually perpendicular directions, each with a velocity v. The third piece is making an angle α with the line of motion of each piece. Find α | |
| 43. |
37.Reaction of ethyl formate with excess of CH3MgI followed by hydrolysis gives: 1) n propyl alcohol 2 )isopropyl alcohol 3)acetaldehyde 4)acetone |
| Answer» 37.Reaction of ethyl formate with excess of CH3MgI followed by hydrolysis gives: 1) n propyl alcohol 2 )isopropyl alcohol 3)acetaldehyde 4)acetone | |
| 44. |
9. What are the final concentrations of all the ions when following are mixed? 50 mL of 0.12 A/ Fe(N03 ) 3 , 100 mL of 0.10A/FeCl3 and 100 mL of 0.26M Mg(N03)2 . |
| Answer» 9. What are the final concentrations of all the ions when following are mixed? 50 mL of 0.12 A/ Fe(N03 ) 3 , 100 mL of 0.10A/FeCl3 and 100 mL of 0.26M Mg(N03)2 . | |
| 45. |
Arrange th stability order of elimination product of (1)3hydroxy hex2one(2)4hydroxy hex2one(3)5hydroxy hex2one |
| Answer» Arrange th stability order of elimination product of (1)3hydroxy hex2one(2)4hydroxy hex2one(3)5hydroxy hex2one | |
| 46. |
Balance KMnO4 + H2C2O4 + H2SO4 gives rise to K2SO4 + Mnso4 + CO2 + H2Ousing the alternate method of balancing |
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Answer» Balance KMnO4 + H2C2O4 + H2SO4 gives rise to K2SO4 + Mnso4 + CO2 + H2O using the alternate method of balancing |
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| 47. |
Following figure shows on adiabatic cylindrical container of volume V0 divided by an adiabatic smooth piston (area of cross-section = A) in two equal parts. An ideal gas (CpCv=γ) is at pressure P1 and temperature T1 in left part and gas at pressure P2 and temperature T2 in right part. The piston is slowly displaced and released at a position where it can stay in equlibrium. The final common pressure of the two parts will be [Suppose x = displacement of the piston] |
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Answer» Following figure shows on adiabatic cylindrical container of volume V0 divided by an adiabatic smooth piston (area of cross-section = A) in two equal parts. An ideal gas (CpCv=γ) is at pressure P1 and temperature T1 in left part and gas at pressure P2 and temperature T2 in right part. The piston is slowly displaced and released at a position where it can stay in equlibrium. The final common pressure of the two parts will be |
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| 48. |
For all the sets A and B , A-(A union B) is ? |
| Answer» For all the sets A and B , A-(A union B) is ? | |
| 49. |
potassium iodide has cubic unit cell with edge length 705pm the density of ki is 3.12g/cm^3 how many k+ and I- ions are contained in the unit cell |
| Answer» potassium iodide has cubic unit cell with edge length 705pm the density of ki is 3.12g/cm^3 how many k+ and I- ions are contained in the unit cell | |
| 50. |
The species present in solution when CO2 is dissolved in water are: |
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Answer» The species present in solution when CO2 is dissolved in water are: |
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