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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. |
There are 10 identical containers of volume V. Each of them have an ideal gas at a same temperature T. The first container has a pressure of 1 atm, the second one has a pressure of 2 atm the third has a pressure of 3 atm and so on. The tenth container has a pressure of 10 atm. If all the 10 containers are connected by thin tubes, then what will be the final pressure (in atm)? |
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Answer» There are 10 identical containers of volume V. Each of them have an ideal gas at a same temperature T. The first container has a pressure of 1 atm, the second one has a pressure of 2 atm the third has a pressure of 3 atm and so on. The tenth container has a pressure of 10 atm. If all the 10 containers are connected by thin tubes, then what will be the final pressure (in atm)? |
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| 2. |
{ †ext { If a solute AB undergoes } 50 % †ext { dissociation and } 50 % } { †ext { dimerisation, then van't Hoff factor (i) would be } } { †ext { (1) } 1.25 } { †ext { (3) } 1.50 |
| Answer» { †ext { If a solute AB undergoes } 50 % †ext { dissociation and } 50 % } { †ext { dimerisation, then van't Hoff factor (i) would be } } { †ext { (1) } 1.25 } { †ext { (3) } 1.50 | |
| 3. |
In the given reaction the product P is :- |
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Answer» In the given reaction |
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| 4. |
15.The moles of Ammonium Sulphate needed to react with one mole of MnO2 in acidic medium in a reaction giving MnSO4 and (NH4)2S2O8 are |
| Answer» 15.The moles of Ammonium Sulphate needed to react with one mole of MnO2 in acidic medium in a reaction giving MnSO4 and (NH4)2S2O8 are | |
| 5. |
When is optical isomerism present? |
| Answer» When is optical isomerism present? | |
| 6. |
7. MX2 dissociates into M2+ and X ions in an aqueous solution, with a degree of dissociation (a) of 0.5. The ratio of the observed depression of freezing point of the aqueous solution to the value of the depression of freezing point in the absence of ionic dissociation is |
| Answer» 7. MX2 dissociates into M2+ and X ions in an aqueous solution, with a degree of dissociation (a) of 0.5. The ratio of the observed depression of freezing point of the aqueous solution to the value of the depression of freezing point in the absence of ionic dissociation is | |
| 7. |
Why carboxylic acid is stronger acid then phenol? Or Why the conjugated base of carboxylic acid is weaker then conjugated base of phenol? |
| Answer» Why carboxylic acid is stronger acid then phenol? Or Why the conjugated base of carboxylic acid is weaker then conjugated base of phenol? | |
| 8. |
2. The standard entropies of N2 (g), H2 (g) andNH3 (g) are 191.5, 130.5, 192.6 JK-1 mol-1. Thevalue of ASo of formation of ammonia is(1) -98.9 JK-1 mol-1(2) Zero(3) +129.4 JK-1 mol-1(4) -29.4 JK 1 mol-1 |
| Answer» 2. The standard entropies of N2 (g), H2 (g) andNH3 (g) are 191.5, 130.5, 192.6 JK-1 mol-1. Thevalue of ASo of formation of ammonia is(1) -98.9 JK-1 mol-1(2) Zero(3) +129.4 JK-1 mol-1(4) -29.4 JK 1 mol-1 | |
| 9. |
Which of the following compound does not produce oxyacid of central atom on hydrolysis?give me detail explantion(a) BF3 (b) NCl3(c) SF4 (d) PCl5 |
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Answer» Which of the following compound does not produce oxyacid of central atom on hydrolysis?give me detail explantion (a) BF3 (b) NCl3 (c) SF4 (d) PCl5 |
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| 10. |
61 A chemist has one solution which is 50% acidic and a second solution which is 25% acidic. How much of each should be mixed together make 10 litres of 40% acidic solution? |
| Answer» 61 A chemist has one solution which is 50% acidic and a second solution which is 25% acidic. How much of each should be mixed together make 10 litres of 40% acidic solution? | |
| 11. |
The correct order of increasing C−X bond length is:(R is methyl group) |
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Answer» The correct order of increasing C−X bond length is: |
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| 12. |
The ionic product of water will increase if |
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Answer» The ionic product of water will increase if |
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| 13. |
If asquare plate is placed in a xy pane and electric field along z ais is is given by Eox then what will be the total electric fluzx through the surface. |
| Answer» If asquare plate is placed in a xy pane and electric field along z ais is is given by Eox then what will be the total electric fluzx through the surface. | |
| 14. |
For the reaction, 2N2O5 → 4NO2 + O2, which of the relationship is correct? |
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Answer» For the reaction, 2N2O5 → 4NO2 + O2, which of the relationship is correct? |
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| 15. |
Which of these is not a monomer for a high molecular mass silicon polymer? 1. MeSiCl3 2. Me2SiCl2 3. Me3SiCl 4. PhSiCl3 |
| Answer» Which of these is not a monomer for a high molecular mass silicon polymer? 1. MeSiCl3 2. Me2SiCl2 3. Me3SiCl 4. PhSiCl3 | |
| 16. |
Incorrect statement among the following is |
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Answer» Incorrect statement among the following is
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| 17. |
9. While naming a compound with multiple functional groups is ether preferred or halogen is preferred? |
| Answer» 9. While naming a compound with multiple functional groups is ether preferred or halogen is preferred? | |
| 18. |
Dissolving 1.5 g non-volatile solute (molecularmass 60) in 250 g of a solvent reduces itsfreezing point by 0.01^° C. Molal depressionconstant of the solvent (in K kg mol-) is |
| Answer» Dissolving 1.5 g non-volatile solute (molecularmass 60) in 250 g of a solvent reduces itsfreezing point by 0.01^° C. Molal depressionconstant of the solvent (in K kg mol-) is | |
| 19. |
The molar mass of CuSO 5 H2O is 249. Itsequivalent mass in the reaction (a) and (b) wouldbe(a) Reaction CuSO4 with KI giving a produc(b) Electrolysis of CuSO4 solution.(1) (a) 249 (b) 249(3) (a) 249 (b) 124.5 (4) (a) 124.5 (b) 249(2) (a) 124.5 (b) 124.5 |
| Answer» The molar mass of CuSO 5 H2O is 249. Itsequivalent mass in the reaction (a) and (b) wouldbe(a) Reaction CuSO4 with KI giving a produc(b) Electrolysis of CuSO4 solution.(1) (a) 249 (b) 249(3) (a) 249 (b) 124.5 (4) (a) 124.5 (b) 249(2) (a) 124.5 (b) 124.5 | |
| 20. |
Propene reacts with sulphuric acid to form: |
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Answer» Propene reacts with sulphuric acid to form: |
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| 21. |
Draw formulas for the first five members of each homologous series beginning with the following compounds. (a) H–COOH (b) CH3COCH3 (c) H–CH=CH2 |
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Answer» Draw formulas for the first five members of each homologous series beginning with the following compounds. (a) H–COOH (b) CH3COCH3 (c) H–CH=CH2 |
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| 22. |
Why delta G is zero at equilibrium? |
| Answer» Why delta G is zero at equilibrium? | |
| 23. |
A fresh H2O2 solution is labelled 11.2V. This solution has the same concentration as a solution which is: |
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Answer» A fresh H2O2 solution is labelled 11.2V. This solution has the same concentration as a solution which is: |
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| 24. |
Photochemical smog is also known as: |
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Answer» Photochemical smog is also known as: |
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| 25. |
To a 25 mL H_2O_2 solution, excess of acidified solution of KI was added. The iodine liberated required 20 mL of 0.3 N Na_2S_2O_3 solution. The volume strength of H_2O_2 solution is (1) 1.344 g/L (2) 3.244 g/L (3) 5.4 g/L (4) 4.08 g/L. |
| Answer» To a 25 mL H_2O_2 solution, excess of acidified solution of KI was added. The iodine liberated required 20 mL of 0.3 N Na_2S_2O_3 solution. The volume strength of H_2O_2 solution is (1) 1.344 g/L (2) 3.244 g/L (3) 5.4 g/L (4) 4.08 g/L. | |
| 26. |
Why size of side atom in OCl2 is greater than H2O? |
| Answer» Why size of side atom in OCl2 is greater than H2O? | |
| 27. |
The IUPAC nomenclature for [Ni(CO)4] is: |
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Answer» The IUPAC nomenclature for [Ni(CO)4] is: |
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| 28. |
Calculate the volume of CO2 evolved at NTP when 20g of CaCO3 is heated strongly. |
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Answer» Calculate the volume of CO2 evolved at NTP when 20g of CaCO3 is heated strongly. |
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| 29. |
The efficiency of a Carnot's engine at a particular source and sink temperature is 1/2 .When the sink temperature is reduced by 100∘C, the engine efficiency, becomes 2/3. Find the source temperature. |
| Answer» The efficiency of a Carnot's engine at a particular source and sink temperature is 1/2 .When the sink temperature is reduced by 100∘C, the engine efficiency, becomes 2/3. Find the source temperature. | |
| 30. |
An alloy of copper, silver and gold is found to have copper constituting the ccp lattice. If silver atoms occupy the edge centres and gold is present atbody centre, the alloy has a formula |
| Answer» An alloy of copper, silver and gold is found to have copper constituting the ccp lattice. If silver atoms occupy the edge centres and gold is present atbody centre, the alloy has a formula | |
| 31. |
A solid having definite geometrical shape with flat faces andsharp edges is: |
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Answer» A solid having definite geometrical shape with flat faces and |
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| 32. |
ques- How many number of carban atom present in 22gm CO2 |
| Answer» ques- How many number of carban atom present in 22gm CO2 | |
| 33. |
In a saturated solution of the sparingly soluble strong electrolyte AgIO3 (Molecular mass = 283) the equilibrium which sets in is AgIO3(s)⇌Ag+(aq)+IO−3(aq). If the solubility product constant Ksp of AgIO3 at a given temperature is 1.0×10−8, what is the mass of AgIO3 contained in 100 mL of its saturated solution? |
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Answer» In a saturated solution of the sparingly soluble strong electrolyte AgIO3 (Molecular mass = 283) the equilibrium which sets in is |
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| 34. |
48 Calculate the boiling point of 1M aqueous solution (density 1.04 g/mL ) of potassium chloride (Kb for water 0.52 K kg/mol ) Assume potassium chloride is completely dissociated in solution. |
| Answer» 48 Calculate the boiling point of 1M aqueous solution (density 1.04 g/mL ) of potassium chloride (Kb for water 0.52 K kg/mol ) Assume potassium chloride is completely dissociated in solution. | |
| 35. |
what are alkyl groups ? |
| Answer» what are alkyl groups ? | |
| 36. |
In the reaction AlH3and LiH acts as |
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Answer» In the reaction AlH3and LiH acts as |
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| 37. |
In Which of the following polysubstitution occurs and why1.acylation of benzene 2.methylation of benzene 3. Nitration of benzene 4 . Sulphonation |
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Answer» In Which of the following polysubstitution occurs and why 1.acylation of benzene 2.methylation of benzene 3. Nitration of benzene 4 . Sulphonation |
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| 38. |
When we have a mixture of three alkanes in wurtz reaction by reacting different alkanes do we here also get alkenes as minor product ? |
| Answer» When we have a mixture of three alkanes in wurtz reaction by reacting different alkanes do we here also get alkenes as minor product ? | |
| 39. |
During flight, the combination of low air pressure and humidity in aircraft cabins reduce the sensitivity of our taste buds for salt and sweet by upto 30%. |
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Answer» During flight, the combination of low air pressure and humidity in aircraft cabins reduce the sensitivity of our taste buds for salt and sweet by upto 30%. |
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| 40. |
In basic nature : NH3 > H2O ?WHY and HOW? |
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Answer» In basic nature : NH3 > H2O ? WHY and HOW? |
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| 41. |
On hybridization of one s and one p orbitals we get Two mutually perpendicular hybrid orbitals Two equivalent hybrid orbitals at 180degree Four hybrid orbitals directed tetrahedralThree hybrid orbitals in the plane |
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Answer» On hybridization of one s and one p orbitals we get Two mutually perpendicular hybrid orbitals Two equivalent hybrid orbitals at 180degree Four hybrid orbitals directed tetrahedral Three hybrid orbitals in the plane |
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| 42. |
PH3 has lower boiling point than NH3 why? |
| Answer» PH3 has lower boiling point than NH3 why? | |
| 43. |
why C6H5COCH3 is least reactive to the nucliophilic substitution reaction ? |
| Answer» why C6H5COCH3 is least reactive to the nucliophilic substitution reaction ? | |
| 44. |
10. What is the work done by 0.2 mole of a gas at room temperature to double its volume during isobaric process?(Take R = 2 cal mol-' oC-)(1) 30 cal(3) 120 cal(2) 40 cal(4) 160 cal |
| Answer» 10. What is the work done by 0.2 mole of a gas at room temperature to double its volume during isobaric process?(Take R = 2 cal mol-' oC-)(1) 30 cal(3) 120 cal(2) 40 cal(4) 160 cal | |
| 45. |
19. What is moles |
| Answer» 19. What is moles | |
| 46. |
1. Is there any formula to calculate no of resonating structures of benzene compounds say nitrobenzene? |
| Answer» 1. Is there any formula to calculate no of resonating structures of benzene compounds say nitrobenzene? | |
| 47. |
Find the volume of H2O that should be added to 300 mL of 0.5 M NaOH so as to prepare a solution of 0.2 M. |
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Answer» Find the volume of H2O that should be added to 300 mL of 0.5 M NaOH so as to prepare a solution of 0.2 M. |
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| 48. |
allred rochow scale of electronegativit |
| Answer» allred rochow scale of electronegativit | |
| 49. |
Which of the following species is not paramagnetic in nature? [Atomic number: Be = 4, Ne = 10, As = 33, Cl = 17] |
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Answer» Which of the following species is not paramagnetic in nature? [Atomic number: Be = 4, Ne = 10, As = 33, Cl = 17] |
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| 50. |
Which of following reactions produce(s) propane as a major product? |
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Answer» Which of following reactions produce(s) propane as a major product? |
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