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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. |
Arrange the following compounds in order of increasing dipole moment. (I) Toluene (II) m - dichlorobenzene (III) o - dichlorobenzene (IV) p - dichlorobenzene |
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Answer» Arrange the following compounds in order of increasing dipole moment. (I) Toluene (II) m - dichlorobenzene (III) o - dichlorobenzene (IV) p - dichlorobenzene |
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| 2. |
Which one of the following forms an alcohol with nitrous acid solution at 00C |
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Answer» Which one of the following forms an alcohol with nitrous acid solution at 00C |
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| 3. |
How many e− are present in the kernel of Cl? |
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Answer» How many e− are present in the kernel of Cl?
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| 4. |
who introduced laws of thermodynamics? |
| Answer» who introduced laws of thermodynamics? | |
| 5. |
Largest number of ions is present in the electrolyte |
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Answer» Largest number of ions is present in the electrolyte |
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| 6. |
27 Which of the following electrolytes will have maximum coagulation value for Ag/Ag+ sol? A Na2S B Na3PO4 C Na2SO4 D NACL |
| Answer» 27 Which of the following electrolytes will have maximum coagulation value for Ag/Ag+ sol? A Na2S B Na3PO4 C Na2SO4 D NACL | |
| 7. |
Two gases A and B having molecular weights 60 and 40 respectively are enclosed in a vessel. The weight of A is 0.45 g and that of B is 0.1 g. The total pressure of the mixture is 900 mm of Hg. Calculate the partial pressure of the gas A. |
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Answer» Two gases A and B having molecular weights 60 and 40 respectively are enclosed in a vessel. The weight of A is 0.45 g and that of B is 0.1 g. The total pressure of the mixture is 900 mm of Hg. Calculate the partial pressure of the gas A. |
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| 8. |
PhCHO+(CH3CO)2OCH3COONa−−−−−−−−→ A HBr−−−→ BThe product B is : |
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Answer» PhCHO+(CH3CO)2OCH3COONa−−−−−−−−→ A HBr−−−→ B The product B is : |
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| 9. |
For the reaction PCl5(g)⇋PCl3(g)+Cl2(g); the forward reaction at constant temperature is favoured by: |
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Answer» For the reaction PCl5(g)⇋PCl3(g)+Cl2(g); the forward reaction at constant temperature is favoured by: |
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| 10. |
what is swarts reactio |
| Answer» what is swarts reactio | |
| 11. |
Which of the following compounds are diprotic 1.H_2PO_5 2.H_2S 3.HClO_3 4.H_3PO_4 |
| Answer» Which of the following compounds are diprotic 1.H_2PO_5 2.H_2S 3.HClO_3 4.H_3PO_4 | |
| 12. |
why and how an amorphous solid gets converted into crystalline solid with a high temperature? |
| Answer» why and how an amorphous solid gets converted into crystalline solid with a high temperature? | |
| 13. |
24. Which of the following is the d-block element 1.Sc. 2.Ga 3.Se. 4.Cl |
| Answer» 24. Which of the following is the d-block element 1.Sc. 2.Ga 3.Se. 4.Cl | |
| 14. |
Explain the construction of a calorimeter. |
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Answer» Explain the construction of a calorimeter. |
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| 15. |
The weighing machine measures weight of the body or mass of the body. |
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Answer» The weighing machine measures weight of the body or mass of the body. |
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| 16. |
Which of the following compounds are formed by the oxidation of 3 – methyl butane 1, 2, 3 – triol with HIO4 |
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Answer» Which of the following compounds are formed by the oxidation of 3 – methyl butane 1, 2, 3 – triol with HIO4 |
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| 17. |
A monoatomic gas undergoes a process where gas does work on expense of internal energy. The relation between pressure and volume is given by |
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Answer» A monoatomic gas undergoes a process where gas does work on expense of internal energy. The relation between pressure and volume is given by |
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| 18. |
The number of neutrons present in 1.7 g of ammonia is |
| Answer» The number of neutrons present in 1.7 g of ammonia is | |
| 19. |
Enthalpy of neutralization between strong acid & strong base is -56KJ. Enthalpy of neutralization between HA with strong base is -52 KJ. Enthalpy of neutralization between strong acid with BOH is-48KJ. Determine :-(A) Enthalpy of ionization of HA.(B) Enthalpy of ionization of BOH. (C) Enthalpy changes when HA is neutralized by BOH. |
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Answer» Enthalpy of neutralization between strong acid & strong base is -56KJ. Enthalpy of neutralization between HA with strong base is -52 KJ. Enthalpy of neutralization between strong acid with BOH is-48KJ. Determine :- (A) Enthalpy of ionization of HA. (B) Enthalpy of ionization of BOH. (C) Enthalpy changes when HA is neutralized by BOH. |
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| 20. |
24.The number of peroxide linkages in perchloric acid is (1) Zero (2) One (3) Two (4) Four |
| Answer» 24.The number of peroxide linkages in perchloric acid is (1) Zero (2) One (3) Two (4) Four | |
| 21. |
The hydride that is not electron deficent is: |
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Answer» The hydride that is not electron deficent is: |
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| 22. |
What is the order of reactivity of following compounds with (a) PhMgBr (b) HCN? 1. Benzophenone 2. Ethanal 3. Acetone |
| Answer» What is the order of reactivity of following compounds with (a) PhMgBr (b) HCN? 1. Benzophenone 2. Ethanal 3. Acetone | |
| 23. |
When solid potassium cyanide is added in water then |
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Answer» When solid potassium cyanide is added in water then |
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| 24. |
69. Why σ bonds are more stronger than pie bonds? |
| Answer» 69. Why σ bonds are more stronger than pie bonds? | |
| 25. |
15. What is hydrogen spectrum |
| Answer» 15. What is hydrogen spectrum | |
| 26. |
10. Why and how does hydration enthalpy depends on ionic sizes |
| Answer» 10. Why and how does hydration enthalpy depends on ionic sizes | |
| 27. |
The number of aromatic isomers of molecular formula C8H9Cl which don't have chlorine atom in the aromatic nucleus is a) 5 b) 4 c) 6 d) 7 |
| Answer» The number of aromatic isomers of molecular formula C8H9Cl which don't have chlorine atom in the aromatic nucleus is a) 5 b) 4 c) 6 d) 7 | |
| 28. |
Ag2S+NaCN→(A),(A)+Zn→(B)+Ag, (A) and (B) are respectively |
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Answer» Ag2S+NaCN→(A),(A)+Zn→(B)+Ag, (A) and (B) are respectively |
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| 29. |
Predict the correct intermediate and product in the following reaction |
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Answer» Predict the correct intermediate and product in the following reaction |
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| 30. |
Which of the following ions has the highest magnetic moment? |
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Answer» Which of the following ions has the highest magnetic moment? |
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| 31. |
Calculate the wavelength in Angstroms of the photon that is emitted when an electron in the Bohr orbit, n = 2 returns to the orbit, n = 1 in the hydrogen atom. The ionization potential of the ground state hydrogen atom is 2.17×10−11 erg per atom. |
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Answer» Calculate the wavelength in Angstroms of the photon that is emitted when an electron in the Bohr orbit, n = 2 returns to the orbit, n = 1 in the hydrogen atom. The ionization potential of the ground state hydrogen atom is 2.17×10−11 erg per atom. |
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| 32. |
The acidic, basic and amphoteric oxides respectively are : |
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Answer» The acidic, basic and amphoteric oxides respectively are : |
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| 33. |
list of monovalent elements |
| Answer» list of monovalent elements | |
| 34. |
75, In a first order reaction A → 2B, the total pressurechanges from 100 to 150 mm Hg in 10 minute fromthe start of the reaction. The rate of appearance ofB is(1) 5 mm Hg min(2) 50 mm Hg min(3) 100 mm Hg min-110 mm Hg min-1 |
| Answer» 75, In a first order reaction A → 2B, the total pressurechanges from 100 to 150 mm Hg in 10 minute fromthe start of the reaction. The rate of appearance ofB is(1) 5 mm Hg min(2) 50 mm Hg min(3) 100 mm Hg min-110 mm Hg min-1 | |
| 35. |
3.Explain molten state and diff. between molten and native |
| Answer» 3.Explain molten state and diff. between molten and native | |
| 36. |
What will be the major product formed if hydrogen iodide is added to Pent-2-ene |
| Answer» What will be the major product formed if hydrogen iodide is added to Pent-2-ene | |
| 37. |
Moles of KCio, required for producing sufficient O2to react with 1 mole of aluminium will be (Molarmass of KCIO 122.5)(1) 2 mole(2) 1 mole5(4) mole2(3) mole2 |
| Answer» Moles of KCio, required for producing sufficient O2to react with 1 mole of aluminium will be (Molarmass of KCIO 122.5)(1) 2 mole(2) 1 mole5(4) mole2(3) mole2 | |
| 38. |
A solution containing 30 gram of a A solution containing 30g of a nonvolatile solute exactly in 90 g of water has a vapour pressure of 2.8 kPa at 298 k.Further 18 g of water is then added to the solution, the new vapour pressure becomes 2.9 kPa at 298 k. Calculate(i) molar mass of the solute.(ii)Vapour pressure of water at 298 k. |
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Answer» A solution containing 30 gram of a A solution containing 30g of a nonvolatile solute exactly in 90 g of water has a vapour pressure of 2.8 kPa at 298 k.Further 18 g of water is then added to the solution, the new vapour pressure becomes 2.9 kPa at 298 k. Calculate (i) molar mass of the solute. (ii)Vapour pressure of water at 298 k. |
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| 39. |
26.In a reversible reaction A(g)+B(g)--->C(g). Initially 1 mol of each reactant is taken in 2L container if at equilibrium 20% of A reacts with B. Then what will be equilibrium constant Kc for the reaction |
| Answer» 26.In a reversible reaction A(g)+B(g)--->C(g). Initially 1 mol of each reactant is taken in 2L container if at equilibrium 20% of A reacts with B. Then what will be equilibrium constant Kc for the reaction | |
| 40. |
Is hybridisation only for Valence bond theory or is it also for Molecular Orbiral theory? |
| Answer» Is hybridisation only for Valence bond theory or is it also for Molecular Orbiral theory? | |
| 41. |
Question 4Under what soil conditions do you think a farmer would treat the soil of his fields with quick lime (calcium oxide) or slaked lime (calcium hydroxide) or chalk (calcium carbonate)? |
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Answer» Question 4 |
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| 42. |
Which of the following is the most covalent halide? |
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Answer» Which of the following is the most covalent halide? |
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| 43. |
Product [X] in the following reaction is: |
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Answer» Product [X] in the following reaction is: |
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| 44. |
Which reacts rapidly with Lucas reagent ? |
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Answer» Which reacts rapidly with Lucas reagent ? |
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| 45. |
An acid-base indicator has a K_a of 3×10^{-5}. The acid form of the indicator is red and the basic form is blue. The change in H^{+ }concentration (which is 9×10^{-5}) in order to change the indicator from 25% red to 75% blue is- 1)2×10^{-5}, 2)8×10^{-5}, 3)9×10^{-5, }4)1×10^{-5} |
| Answer» An acid-base indicator has a K_a of 3×10^{-5}. The acid form of the indicator is red and the basic form is blue. The change in H^{+ }concentration (which is 9×10^{-5}) in order to change the indicator from 25% red to 75% blue is- 1)2×10^{-5}, 2)8×10^{-5}, 3)9×10^{-5, }4)1×10^{-5} | |
| 46. |
A body of mass (4m) is lying in x-y plane at rest. It suddenly explodes into three pieces. Two pieces each of mass (m) move perpendicular to each other with equal speeds (v). The total kinetic energy generated due to explosion is |
| Answer» A body of mass (4m) is lying in x-y plane at rest. It suddenly explodes into three pieces. Two pieces each of mass (m) move perpendicular to each other with equal speeds (v). The total kinetic energy generated due to explosion is | |
| 47. |
Fo an ideal gas, consider only P-V work in going from initial state X to the final state Z. The final state Z can be reached by either of the two paths shown in the figure. [Take △ S as change in entropy and W as work done]. Which of the following choice(s) is (are) correct? (2012) |
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Answer» Fo an ideal gas, consider only P-V work in going from initial state X to the final state Z. The final state Z can be reached by either of the two paths shown in the figure. |
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| 48. |
At a partial pressure of 600 mm Hg and 298 K, the solubility of a gas in water which is exposed to the atmosphere is 1×10−4M. Calculate the solubility of the gas at 700 mm Hg and at same temperature? |
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Answer» At a partial pressure of 600 mm Hg and 298 K, the solubility of a gas in water which is exposed to the atmosphere is 1×10−4M. Calculate the solubility of the gas at 700 mm Hg and at same temperature? |
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| 49. |
In which of thefollowing arrangements the given sequence is not strictly according to theproperty indicated against it? |
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Answer» In which of the |
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| 50. |
A sample of amoniumphosphate contains 3.18 moles of hydrogen atom.The no. Of moles of oxygen atom in the sample is- |
| Answer» A sample of amoniumphosphate contains 3.18 moles of hydrogen atom.The no. Of moles of oxygen atom in the sample is- | |
