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. |
Match the addition statements correctly. |
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Answer» Match the addition statements correctly. |
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| 2. |
6. At 817^° C Ko for the reaction b/w CO2 and excess of hot graphite is 10 atm. a) What are the equilibrium concentration of the gases at 817^° C and 5 atm total pressure? b) At what total pressure does the gas contains 5% CO2 by volume? |
| Answer» 6. At 817^° C Ko for the reaction b/w CO2 and excess of hot graphite is 10 atm. a) What are the equilibrium concentration of the gases at 817^° C and 5 atm total pressure? b) At what total pressure does the gas contains 5% CO2 by volume? | |
| 3. |
Which one of the following sets of quantum numbers represents an impossible arrangment ? |
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Answer» Which one of the following sets of quantum numbers represents an impossible arrangment ? |
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| 4. |
find the interval inwhich f(x) =x-2sinx. x lies in closed interval 0 to 2 pie. is increasing |
| Answer» find the interval inwhich f(x) =x-2sinx. x lies in closed interval 0 to 2 pie. is increasing | |
| 5. |
Why is lanthanum hydroxide more basic than leutium hydroxide |
| Answer» Why is lanthanum hydroxide more basic than leutium hydroxide | |
| 6. |
Which of the following contains the minimum number of molecules? |
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Answer» Which of the following contains the minimum number of molecules? |
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| 7. |
How many electrons with l=two are there in an atom having atomic number 54? |
| Answer» How many electrons with l=two are there in an atom having atomic number 54? | |
| 8. |
Which one of the following has the highest oxidation number of iodine |
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Answer» Which one of the following has the highest oxidation number of iodine |
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| 9. |
When ethyne is treated with AsCl_3 gives |
| Answer» When ethyne is treated with AsCl_3 gives | |
| 10. |
How to check that the given equation is Disproportionation or not? |
| Answer» How to check that the given equation is Disproportionation or not? | |
| 11. |
What is the probability that a determinant of order 2 formed by elements 0 and 1 is non-negative |
| Answer» What is the probability that a determinant of order 2 formed by elements 0 and 1 is non-negative | |
| 12. |
Consider the following roadmap of reactions given below: The number of structural isomers of ′S′ formed = X The number of geometrical isomers of ′R′ formed = Y The value of X+Y is |
Answer» Consider the following roadmap of reactions given below:![]() The number of structural isomers of ′S′ formed = X The number of geometrical isomers of ′R′ formed = Y The value of X+Y is |
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| 13. |
Al+3 /AI=1.66 V and K of Al (OH)3=1.0 x 10-33. Reduction potential of the abovecouple at pH = 14 is(A) -2.31 V(C) +1.01 V(B) + 2.31 V (d) -1.01v |
| Answer» Al+3 /AI=1.66 V and K of Al (OH)3=1.0 x 10-33. Reduction potential of the abovecouple at pH = 14 is(A) -2.31 V(C) +1.01 V(B) + 2.31 V (d) -1.01v | |
| 14. |
The equilibrium mixture for 2SO2(g)+O2(g)⇌2SO3(g) present in 1L vessel at 600pC contains 0.50, 0.12, and 5.0 mole of SO2,O2 and SO3 respectively. Also calculate Kp |
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Answer» The equilibrium mixture for 2SO2(g)+O2(g)⇌2SO3(g) present in 1L vessel at 600pC contains 0.50, 0.12, and 5.0 mole of SO2,O2 and SO3 respectively. |
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| 15. |
The E∘ for the cell reaction: Cu(S)+2Ag+(aq)→Cu2(aq)+2Ag(S) is 0.46V. What is its equilibrium constant? |
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Answer» The E∘ for the cell reaction: Cu(S)+2Ag+(aq)→Cu2(aq)+2Ag(S) is 0.46V. What is its equilibrium constant? |
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| 16. |
A form SCS ,B present at face centre if two atoms are absent from corner then formula of unit cell |
| Answer» A form SCS ,B present at face centre if two atoms are absent from corner then formula of unit cell | |
| 17. |
The compound with molecular formula C8H10which will give only two isomers on electrophilicsubstitution with Cl2/FeCl3 or with HNO3/H2SO4 is(a) p-dimethylbenzene (b) m-dimethylbenzene c) o-dimethylbenzene (d) ethylbenzene |
| Answer» The compound with molecular formula C8H10which will give only two isomers on electrophilicsubstitution with Cl2/FeCl3 or with HNO3/H2SO4 is(a) p-dimethylbenzene (b) m-dimethylbenzene c) o-dimethylbenzene (d) ethylbenzene | |
| 18. |
Why CH3+ has hybridisation SP2 |
| Answer» Why CH3+ has hybridisation SP2 | |
| 19. |
The number of H+ ions in 1 cc of a solution, having pH = 13, is |
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Answer» The number of H+ ions in 1 cc of a solution, having pH = 13, is |
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| 20. |
A spontaneous reaction proceeds with a decrease in |
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Answer» A spontaneous reaction proceeds with a decrease in |
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| 21. |
12. A METAL CRYSTALLISES IN FCC WITH EDGE LENGTH a THE CLOSEST APPROACH BTW 2 ATOMS IN A METALLIC CRYSTAL WILL BE a)1.414a b)a/1.414 c)2a d)2.828a |
| Answer» 12. A METAL CRYSTALLISES IN FCC WITH EDGE LENGTH a THE CLOSEST APPROACH BTW 2 ATOMS IN A METALLIC CRYSTAL WILL BE a)1.414a b)a/1.414 c)2a d)2.828a | |
| 22. |
For an aqueous solution, freezing point is −0.156oC. Elevation of the boiling point of the same solution isGiven:Kf=1.86oCmol−1kgKb=0.52oCmol−1kg |
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Answer» For an aqueous solution, freezing point is −0.156oC. Elevation of the boiling point of the same solution is |
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| 23. |
11 calculate the resonance energy of C6H6 using Kekule formula for C6H6-Given delta H0f for C6H6=-358.5 kJ/mol heat of atomisation of C=716.8 kJ/mol Bond energy of C-H ,C-C ,C=C and H-H are 490,340,620,436.9 kJ/mol resp. |
| Answer» 11 calculate the resonance energy of C6H6 using Kekule formula for C6H6-Given delta H0f for C6H6=-358.5 kJ/mol heat of atomisation of C=716.8 kJ/mol Bond energy of C-H ,C-C ,C=C and H-H are 490,340,620,436.9 kJ/mol resp. | |
| 24. |
tildon's reagent addition mechanism |
| Answer» tildon's reagent addition mechanism | |
| 25. |
Write the chemistry ofrecharging the lead storage battery, highlighting all the materialsthat are involved during recharging. |
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Answer» Write the chemistry of |
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| 26. |
Which one of the following pairs of species have the same bond order? |
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Answer» Which one of the following pairs of species have the same bond order? |
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| 27. |
8. A solution of 200mL of 1M KOH is added to 200mL of 1M HCL and the mixture is well shaken. This rise in temperature T1 is noted. The experiment is repeated by using 100mL of each solution and increase in temperature T2 is noted. The relation between T1 and T2 is ? |
| Answer» 8. A solution of 200mL of 1M KOH is added to 200mL of 1M HCL and the mixture is well shaken. This rise in temperature T1 is noted. The experiment is repeated by using 100mL of each solution and increase in temperature T2 is noted. The relation between T1 and T2 is ? | |
| 28. |
A substance undergoes first order decomposition involving two parallel first order reaction as :The mol percent of B in the product is : |
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Answer» A substance undergoes first order decomposition involving two parallel first order reaction as : |
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| 29. |
What are alkyl halides and what is iits impor†an e. |
| Answer» What are alkyl halides and what is iits impor†an e. | |
| 30. |
how to convert alkyl halide to alkyne |
| Answer» how to convert alkyl halide to alkyne | |
| 31. |
Which of the following is an example of cyclic symmetrical ether? |
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Answer» Which of the following is an example of cyclic symmetrical ether? |
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| 32. |
The edge length of a face-centered cubic cell of an ionic substance is 508 pm . If the radius of the cation is 110 pm , the radius (in pm) of the anion is:If it is face centered then should'nt we use root2 a = 2(r+ +r-) But the formula used is a=2r+ + 2r-why? |
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Answer» The edge length of a face-centered cubic cell of an ionic substance is 508 pm . If the radius of the cation is 110 pm , the radius (in pm) of the anion is: If it is face centered then should'nt we use root2 a = 2(r+ +r-) But the formula used is a=2r+ + 2r- why? |
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| 33. |
How to determine whether a compound is planar or not |
| Answer» How to determine whether a compound is planar or not | |
| 34. |
Which of the following molecule have only one pπ−dπ bond and zero pπ−pπ bonds? |
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Answer» Which of the following molecule have only one pπ−dπ bond and zero pπ−pπ bonds? |
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| 35. |
_________ are biocatalysts which speed up the reactions in biosystems. |
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Answer» _________ are biocatalysts which speed up the reactions in biosystems. |
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| 36. |
What is meant by dipole moment ? |
| Answer» What is meant by dipole moment ? | |
| 37. |
When a manganese salt is heated with boric anhydride, a coloured bead is formed which is due to the formation of |
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Answer» When a manganese salt is heated with boric anhydride, a coloured bead is formed which is due to the formation of |
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| 38. |
25.The hybridisation involves the complex (Ni(CN)4)2- is |
| Answer» 25.The hybridisation involves the complex (Ni(CN)4)2- is | |
| 39. |
Among the following structures I to IVI. II. III. IV. It is true that |
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Answer» Among the following structures I to IV |
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| 40. |
The time required for 100% completion of a zero order reaction is .(a is the initial concentration and k is the rate constant) |
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Answer» The time required for 100% completion of a zero order reaction is |
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| 41. |
Most stable alkene is |
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Answer» Most stable alkene is |
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| 42. |
First order kinetics, derive integral rate equation for optically active substance when optical rotation angles are given (all steps) |
| Answer» First order kinetics, derive integral rate equation for optically active substance when optical rotation angles are given (all steps) | |
| 43. |
A mixture of 1.65 × 1021 molecules of X and1.85 x 1021 molecules of Y weighs 0.688 g. Themol. wt. of X is (Assume mol. wt, of Y is 187). |
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Answer» A mixture of 1.65 × 1021 molecules of X and1.85 x 1021 molecules of Y weighs 0.688 g. Themol. wt. of X is (Assume mol. wt, of Y is 187). |
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| 44. |
Ksp of CdS=8×10−27, Ksp of ZnS=1×10−21, Ka of H2S=1×10−21. When ZnS starts precipitating, what concentration of Cd2+ is left? |
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Answer» Ksp of CdS=8×10−27, Ksp of ZnS=1×10−21, Ka of H2S=1×10−21. When ZnS starts precipitating, what concentration of Cd2+ is left? |
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| 45. |
Density of CO2 gas (in g/L) at 8.21atm pressure and 400K temperature is |
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Answer» Density of CO2 gas (in g/L) at 8.21atm pressure and 400K temperature is |
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| 46. |
Amongst the following hydroxides, the One which has the highest value of Ksp at ordinary temperature is |
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Answer» Amongst the following hydroxides, the One which has the highest value of Ksp at ordinary temperature is |
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| 47. |
The activation energy of a 2nd order reaction is 100 KJ at 27°C .When the same reaction proceed with positive catalyst the new activation energy is 71.13 KJ. The ratio of specific rate constant of catalyzed to uncatalyzed reaction is (approximately) |
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Answer» The activation energy of a 2nd order reaction is 100 KJ at 27°C .When the same reaction proceed with positive catalyst the new activation energy is 71.13 KJ. The ratio of specific rate constant of catalyzed to uncatalyzed reaction is (approximately) |
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| 48. |
Which of the following compound is paramagnetic- (1) Tetracyanonickelate (II) ion (2) Tetraamminezinc (II) ion (3) Hexaamine chromium (III) ion (4) Diammine silver (I) ion |
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Answer» Which of the following compound is paramagnetic- (1) Tetracyanonickelate (II) ion (2) Tetraamminezinc (II) ion (3) Hexaamine chromium (III) ion (4) Diammine silver (I) ion |
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| 49. |
N2 gas is bubbled through water at 298K. How many moles of N2 gas would dissolve in 1L water assumed that partial pressure of gas is = 0.987 bar and KH = 76.48 K . |
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Answer» N2 gas is bubbled through water at 298K. How many moles of N2 gas would dissolve in 1L water assumed that partial pressure of gas is = 0.987 bar and KH = 76.48 K . |
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| 50. |
18.Equivalent wt of I2 in this reaction I2+5Cl+6H20 -2HIo3 +10HCl |
| Answer» 18.Equivalent wt of I2 in this reaction I2+5Cl+6H20 -2HIo3 +10HCl | |