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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. |
Is aqueous solution of borax basic? Explain |
| Answer» Is aqueous solution of borax basic? Explain | |
| 2. |
Draw the Lewis dot structures of (PO4)3-,(HPO3)2- and (H2PO2)- and mention Co-ordinate bonds wherever required. |
| Answer» Draw the Lewis dot structures of (PO4)3-,(HPO3)2- and (H2PO2)- and mention Co-ordinate bonds wherever required. | |
| 3. |
A, B and C are three biomolecules. the results of teh tests performed on them are given below : Molisch's TestBarfoed TestBiuret TestAPositiveNegativeNegativeBPositivePositiveNegativeCNegativeNegativePositiveA, B and C are respectively: |
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Answer» A, B and C are three biomolecules. the results of teh tests performed on them are given below : Molisch's TestBarfoed TestBiuret TestAPositiveNegativeNegativeBPositivePositiveNegativeCNegativeNegativePositive A, B and C are respectively: |
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| 4. |
how do u write electronic configuration of a heteroatomic molecule by Molecular orbital theory? |
| Answer» how do u write electronic configuration of a heteroatomic molecule by Molecular orbital theory? | |
| 5. |
Calculate q (heat transfered) for an isothermal reversible expansion of 1 mole of an ideal gas from an initial pressure of 1.0 bar to a final pressure of 0.1 bar at a constant temperature of 273 K. |
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Answer» Calculate q (heat transfered) for an isothermal reversible expansion of 1 mole of an ideal gas from an initial pressure of 1.0 bar to a final pressure of 0.1 bar at a constant temperature of 273 K. |
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| 6. |
Interstitial hydride among the following is |
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Answer» Interstitial hydride among the following is |
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| 7. |
In which of the following groups of periodic table does the melting point or boiling point increase down the group? |
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Answer» In which of the following groups of periodic table does the melting point or boiling point increase down the group? |
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| 8. |
47. Number of Fe atom in 100g Heamoglobin if it contains 0.33% Fe. (1) 0.035 x 10²³ (2) 35 (3) 3.5x10²³ (4) 7x100000000 |
| Answer» 47. Number of Fe atom in 100g Heamoglobin if it contains 0.33% Fe. (1) 0.035 x 10²³ (2) 35 (3) 3.5x10²³ (4) 7x100000000 | |
| 9. |
total no of angular nodes present in 3dx^2-y^2 and 3dz^2 orbital respectively is |
| Answer» total no of angular nodes present in 3dx^2-y^2 and 3dz^2 orbital respectively is | |
| 10. |
66. What is the bond angle of Cl-C-Cl bond in 1,1,2,2-Tetrachloroethane? |
| Answer» 66. What is the bond angle of Cl-C-Cl bond in 1,1,2,2-Tetrachloroethane? | |
| 11. |
60. The correct order of liquefaction of the gases NH3,CO2, SO2 and HCl is(a) NH3 > CO2> HCl > SO2(b) CO2> NH3> SO2> HCl(c) HCl > CO2> NH3> SO2(d) SO2> NH3> HCl > CO, |
| Answer» 60. The correct order of liquefaction of the gases NH3,CO2, SO2 and HCl is(a) NH3 > CO2> HCl > SO2(b) CO2> NH3> SO2> HCl(c) HCl > CO2> NH3> SO2(d) SO2> NH3> HCl > CO, | |
| 12. |
22. For 1st order reaction, on 0.5M conc.of reactant the rate of reaction is 1.5*10(-2) mol/lit. Calculate half life. |
| Answer» 22. For 1st order reaction, on 0.5M conc.of reactant the rate of reaction is 1.5*10(-2) mol/lit. Calculate half life. | |
| 13. |
How many chiral centre are present in tetracycline? |
Answer» How many chiral centre are present in tetracycline? |
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| 14. |
What are the characteristics exhibited by a pure substance? |
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Answer» What are the characteristics exhibited by a pure substance? |
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| 15. |
The ratio of the number of atoms of two radioactive elements A and B in equilibrium with each other, is 3.1×10^9 : 1 If t1/2of element B is 6.45 years calculate t1/2 of element A Options(1) 31×10^9 (2) 2×10^9 (3) 3.1 ×10^10 (4) 2×10^10 |
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Answer» The ratio of the number of atoms of two radioactive elements A and B in equilibrium with each other, is 3.1×10^9 : 1 If t1/2of element B is 6.45 years calculate t1/2 of element A Options (1) 31×10^9 (2) 2×10^9 (3) 3.1 ×10^10 (4) 2×10^10 |
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| 16. |
The normality of solution obtained by mixing 100 mL of 0.2 M H2SO4 with 100 mL of 0.2 M NaOH is: |
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Answer» The normality of solution obtained by mixing 100 mL of 0.2 M H2SO4 with 100 mL of 0.2 M NaOH is: |
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| 17. |
How many moles of Nacl will be formed from the combination of 1 mole of Na and cl each. What will be the excess reactants in the chemical reaction. |
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Answer» How many moles of Nacl will be formed from the combination of 1 mole of Na and cl each. What will be the excess reactants in the chemical reaction. |
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| 18. |
The movement of electrons in one of the structure is not shown correctly |
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Answer» The movement of electrons in one of the structure is not shown correctly |
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| 19. |
What is Electrode and half cell? And explain symbolic representation of half cell? |
| Answer» What is Electrode and half cell? And explain symbolic representation of half cell? | |
| 20. |
Frenkel defect is caused due to[MP PET 1994] |
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Answer» Frenkel defect is caused due to [MP PET 1994] |
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| 21. |
WRITE THE BOND LINE FORMULA OF H-C≡ C-CH_2-\underset\vert CH-CH_3 OH |
| Answer» WRITE THE BOND LINE FORMULA OF H-C≡ C-CH_2-\underset\vert CH-CH_3 OH | |
| 22. |
At 900k and 1atm SO3 is partially dissociated into SO2 and O2 if density of equilibrium mixture is 0.925g÷L what is degree of dissociation . Is 34.12% |
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Answer» At 900k and 1atm SO3 is partially dissociated into SO2 and O2 if density of equilibrium mixture is 0.925g÷L what is degree of dissociation . Is 34.12% |
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| 23. |
If X is the specific resistance of the solution and M is the molarity of the solution, the molar conductivity of the solution is given by [Kurukshetra CEE 2002] |
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Answer» If X is the specific resistance of the solution and M is the molarity of the solution, the molar conductivity of the solution is given by [Kurukshetra CEE 2002] |
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| 24. |
For the given reaction, which of the following compounds is the best nucleophile? |
Answer» For the given reaction, which of the following compounds is the best nucleophile? |
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| 25. |
20. Acidity of bf3 can be explain on the basis of arrhenius concept |
| Answer» 20. Acidity of bf3 can be explain on the basis of arrhenius concept | |
| 26. |
Which one of the following exist in aqueous medium?M=Aluminium |
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Answer» Which one of the following exist in aqueous medium? |
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| 27. |
How should we know discharge potential of certain element in compare to other what are rules for it |
| Answer» How should we know discharge potential of certain element in compare to other what are rules for it | |
| 28. |
4 ml of HCl solution of pH = 2 is mixed with 6ml of NaOH solution of pH = 12. What would bethe final pH of solution ? log 2 = 0.3(a) 10.3 (b) 11.3(c) 11 (d) 4.3 |
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Answer» 4 ml of HCl solution of pH = 2 is mixed with 6 ml of NaOH solution of pH = 12. What would be the final pH of solution ? log 2 = 0.3 (a) 10.3 (b) 11.3 (c) 11 (d) 4.3 |
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| 29. |
Write the balanced equation for the following :Formaldehyde with tollens reagents Formaldehyde with felings solution |
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Answer» Write the balanced equation for the following : Formaldehyde with tollens reagents Formaldehyde with felings solution |
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| 30. |
A compound is soluble in concentrated H2SO4. It does not decolourize bromine in carbon tetrachloride but oxidized by chromic anhydride in a sulphuric acid within two seconds, turning orange solution to blue green then opaque. The original compound is- |
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Answer» A compound is soluble in concentrated H2SO4. It does not decolourize bromine in carbon tetrachloride but oxidized by chromic anhydride in a sulphuric acid within two seconds, turning orange solution to blue green then opaque. The original compound is- |
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| 31. |
Explain why stability of minus3 oxidation state decreases down group |
| Answer» Explain why stability of minus3 oxidation state decreases down group | |
| 32. |
does diagonal plane of symmetry passes through tetrahedral voids present on body diagonal of fcc lattice? if yes than how many tetrahedral voids are present on 1 diagonal plane of symmetry? |
| Answer» does diagonal plane of symmetry passes through tetrahedral voids present on body diagonal of fcc lattice? if yes than how many tetrahedral voids are present on 1 diagonal plane of symmetry? | |
| 33. |
why H+ ion combines with water only. why it does not combine with any other substance |
| Answer» why H+ ion combines with water only. why it does not combine with any other substance | |
| 34. |
A certain amount of gas is in the glass tube shown below. The temperature of gas is 300 K. What will be the length of gas tube if temperature is doubled isobarically (Assume the area of the tube does not vary with temperature) |
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Answer» A certain amount of gas is in the glass tube shown below. The temperature of gas is 300 K. What will be the length of gas tube if temperature is doubled isobarically (Assume the area of the tube does not vary with temperature) |
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| 35. |
Is there any difference between benzyne mechanism and cine mechanism ? |
| Answer» Is there any difference between benzyne mechanism and cine mechanism ? | |
| 36. |
Nucleophilicity of halides in non polar, aprotic polar and polar protic solvents ? |
| Answer» Nucleophilicity of halides in non polar, aprotic polar and polar protic solvents ? | |
| 37. |
22. WHAT IS OXIMERCURATION-DEMERCURATION REACTION? |
| Answer» 22. WHAT IS OXIMERCURATION-DEMERCURATION REACTION? | |
| 38. |
The bromine atom possesses 35 electrons. It contains 6 electrons in 2p orbital,6 electrons in 3p orbital and 5 electron in 4p orbital. Which of these electronexperiences the lowest effective nuclear charge? |
| Answer» The bromine atom possesses 35 electrons. It contains 6 electrons in 2p orbital,6 electrons in 3p orbital and 5 electron in 4p orbital. Which of these electronexperiences the lowest effective nuclear charge? | |
| 39. |
In which of the following processes entropy decreases? |
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Answer» In which of the following processes entropy decreases? |
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| 40. |
The freezing point of a solution containing 28.335 cm3 of ethylene glycol in 50 g water is found to be –34∘ C. Assuming ideal behaviour, calculate the density of ethylene glycol. Kf for water 1.86 K kg mol−1.___ |
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Answer» The freezing point of a solution containing 28.335 cm3 of ethylene glycol in 50 g water is found to be –34∘ C. Assuming ideal behaviour, calculate the density of ethylene glycol. Kf for water 1.86 K kg mol−1. |
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| 41. |
15.The relation between U,P and V for an ideal gas is U=2+3PV . The gas is a)monoatomic b)diatomic c)polyatomic d)either monoatomic or diatomic |
| Answer» 15.The relation between U,P and V for an ideal gas is U=2+3PV . The gas is a)monoatomic b)diatomic c)polyatomic d)either monoatomic or diatomic | |
| 42. |
34. During electrolysis of aqueous solution of a salt under inert electrodes , pH in the space near one of the electrodes is increased. Which of the following salt was electrolyzed? 1. KCl 2 . CuCl2 3.Cu(NO3)2 4. CuSO4 |
| Answer» 34. During electrolysis of aqueous solution of a salt under inert electrodes , pH in the space near one of the electrodes is increased. Which of the following salt was electrolyzed? 1. KCl 2 . CuCl2 3.Cu(NO3)2 4. CuSO4 | |
| 43. |
the enthalpy of hydrogenation of cyclohexene is -119.5 kj/mol .if the resonance energy of benzene is-150.4 kJ/mol,its enthalpy of hydrogenation would be NOTE: IT IS CYCLOHEXENE NOT CYCLOHEXANE |
| Answer» the enthalpy of hydrogenation of cyclohexene is -119.5 kj/mol .if the resonance energy of benzene is-150.4 kJ/mol,its enthalpy of hydrogenation would be NOTE: IT IS CYCLOHEXENE NOT CYCLOHEXANE | |
| 44. |
Identify the final major product formed in the given reaction sequence. |
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Answer» Identify the final major product formed in the given reaction sequence. |
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| 45. |
22. Sie420 represent 4pz 4dz2 4s 5px |
| Answer» 22. Sie420 represent 4pz 4dz2 4s 5px | |
| 46. |
Molecular orbitals configuration for No will be. |
| Answer» Molecular orbitals configuration for No will be. | |
| 47. |
10.158.5 gm of volatile chloride occupied 22.4l. metal chloride contains 44.7percentage chlorine find formula and atomic weight and valency of metal |
| Answer» 10.158.5 gm of volatile chloride occupied 22.4l. metal chloride contains 44.7percentage chlorine find formula and atomic weight and valency of metal | |
| 48. |
Which pair of elements from different groups resembles each other the most in their chemical properties? |
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Answer» Which pair of elements from different groups resembles each other the most in their chemical properties? |
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| 49. |
Which of the following compounds will form asignificant amount of meta product during mono-nitration with nitrating mixture? |
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Answer» Which of the following compounds will form a |
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| 50. |
Discuss the shape of the following molecules using the VSEPR model: BeCl2,BCl3,SiCl4,AsF5,H2S,PH3 |
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Answer» Discuss the shape of the following molecules using the VSEPR model: |
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