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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. |
Saturated solution of KNO3 is used to make salt bridge because |
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Answer» Saturated solution of KNO3 is used to make salt bridge because |
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| 2. |
what are the conditions the organic compound should satisfy to show ha\log enation via free radical mechanism |
| Answer» what are the conditions the organic compound should satisfy to show ha\log enation via free radical mechanism | |
| 3. |
Identify the molecule which undergoes sp2 hybridization. |
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Answer» Identify the molecule which undergoes sp2 hybridization. |
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| 4. |
The ratio of masses of oxygen and nitrogen in a particular gaseous mixture is 1:4. The ratio of number of their molecule is: x:y. Find the value of x+y |
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Answer» The ratio of masses of oxygen and nitrogen in a particular gaseous mixture is 1:4. The ratio of number of their molecule is: x:y. Find the value of x+y |
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| 5. |
Show that Lenz's law obeys the law of conservation of energy |
| Answer» Show that Lenz's law obeys the law of conservation of energy | |
| 6. |
11. In the structure of cl2o6 why cl is in sp3 hybrid state?whereas we can clearly see cl double bond with o? |
| Answer» 11. In the structure of cl2o6 why cl is in sp3 hybrid state?whereas we can clearly see cl double bond with o? | |
| 7. |
iUPac nomenclature of CH_3-\underset{\underset{NH_2}\vert}{CH}-CH=CH_2. |
| Answer» iUPac nomenclature of CH_3-\underset{\underset{NH_2}\vert}{CH}-CH=CH_2. | |
| 8. |
For a cell reaction involving a Cu/Cu2//Ag+//Ag. The standard Emf of the cell is found to be 0.46 V at 298 k . Calculate the equilibrium constant of the reaction at 250C. |
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Answer» For a cell reaction involving a Cu/Cu2//Ag+//Ag. The standard Emf of the cell is found to be 0.46 V at 298 k . Calculate the equilibrium constant of the reaction at 250C. |
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| 9. |
The thermal stability order for group 14 halides is: |
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Answer» The thermal stability order for group 14 halides is: |
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| 10. |
89.The degree of inonization of HF in 0.100 m aqueous solution is [ freezing point of the solution = -0.197'C and Kf for water = 1.86'C] |
| Answer» 89.The degree of inonization of HF in 0.100 m aqueous solution is [ freezing point of the solution = -0.197'C and Kf for water = 1.86'C] | |
| 11. |
The incorrect order of melting points among the following is: |
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Answer» The incorrect order of melting points among the following is: |
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| 12. |
Identify Z in the following reaction sequence.CH3IMg−−−→EtherXi. Dry ice−−−−−→ii H2OYCl2−−−→Red PZ |
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Answer» Identify Z in the following reaction sequence. |
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| 13. |
In the gaseous reaction of the type aA + bB cC+dD |
| Answer» In the gaseous reaction of the type aA + bB cC+dD | |
| 14. |
find no of moles of electrons in 64 g CH4 |
| Answer» find no of moles of electrons in 64 g CH4 | |
| 15. |
Which of the following does not undergo benzoin condensation? |
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Answer» Which of the following does not undergo benzoin condensation? |
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| 16. |
Writestructures of different isomers corresponding to the molecularformula,C3H9N.Write IUPAC names of the isomers which will liberate nitrogen gas ontreatment with nitrous acid. |
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Answer» Write C3H9N.
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| 17. |
52.Treatment of ethylamine and methyl magnesium halide produces a gaseous substance X.X is. Ethane, Ammonia, Methane, Propane |
| Answer» 52.Treatment of ethylamine and methyl magnesium halide produces a gaseous substance X.X is. Ethane, Ammonia, Methane, Propane | |
| 18. |
The values of }K_{sp} of }CaCO_3 and }CaC_2O_4 are }4.7×10^{-9} and }1.3×10^{-9} respectively at }25^° C . If } the mixture of these two is washed with water, } what is the concentration of }Ca^{2+} ions in water? } (1) }7.746×10^{-5}M (4) }5.831×10^{-5}M (3) }6.856×10^{-5}M (4) }3.606×10^{-5}M |
| Answer» The values of }K_{sp} of }CaCO_3 and }CaC_2O_4 are }4.7×10^{-9} and }1.3×10^{-9} respectively at }25^° C . If } the mixture of these two is washed with water, } what is the concentration of }Ca^{2+} ions in water? } (1) }7.746×10^{-5}M (4) }5.831×10^{-5}M (3) }6.856×10^{-5}M (4) }3.606×10^{-5}M | |
| 19. |
when so2 is passed in acidified k2cr2o7 solution oxidation state of sulphur change fro |
| Answer» when so2 is passed in acidified k2cr2o7 solution oxidation state of sulphur change fro | |
| 20. |
69.How to derive Gay Lussac's Law relation from Boyle's law and Charle's law? |
| Answer» 69.How to derive Gay Lussac's Law relation from Boyle's law and Charle's law? | |
| 21. |
How manyelectrons in an atom may have the following quantum numbers?(a)n = 4, (b) n = 3, l = 0 |
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Answer» How many |
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| 22. |
Can osteoblasts divide? |
| Answer» Can osteoblasts divide? | |
| 23. |
In LiI Crystal, I− ions form a cubical closest packed arrangement and Li+ ions occupy octahedral holes. What is the relationship between the edge-length of the unit cells and the radii of the I– ions? Calculate the limiting ionic radii of Li+ and I− if a = 600pm. |
| Answer» In LiI Crystal, I− ions form a cubical closest packed arrangement and Li+ ions occupy octahedral holes. What is the relationship between the edge-length of the unit cells and the radii of the I– ions? Calculate the limiting ionic radii of Li+ and I− if a = 600pm. | |
| 24. |
Which of the following reactions is incorrectly represented?Options:Cu(s) + 2Ag+ (aq) → Cu2+(aq) + 2Ag(s)Co(s) + Ni2+ → Co2+ (aq) + Ni(s)Should have chosen Cu(s) + Zn2+(aq) → Cu2+(aq) + Zn(s)Wrong 2Na(s) + Mg2+(aq) → Mg(s) + 2Na+(aq) |
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Answer» Which of the following reactions is incorrectly represented? Options: Cu(s) + 2Ag+ (aq) → Cu2+(aq) + 2Ag(s) Co(s) + Ni2+ → Co2+ (aq) + Ni(s) Should have chosen Cu(s) + Zn2+(aq) → Cu2+(aq) + Zn(s) Wrong 2Na(s) + Mg2+(aq) → Mg(s) + 2Na+(aq) |
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| 25. |
what is polymerisation? |
| Answer» what is polymerisation? | |
| 26. |
What weight of sodium contains the same number of atoms as those in 20 grams of oxygen?(Given: Atomic weight of Na=23 u, O=16 u) |
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Answer» What weight of sodium contains the same number of atoms as those in 20 grams of oxygen? |
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| 27. |
A pH electrode obeys Nernst equation and is being operated at 25°C. The change in the open circuit voltage in millivolts across the electrode for a pH change from 6 to 8 is 118.4 |
Answer» A pH electrode obeys Nernst equation and is being operated at 25°C. The change in the open circuit voltage in millivolts across the electrode for a pH change from 6 to 8 is
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| 28. |
The secondary valence of metal cocl3.4nh3 if 1l and 1m solution react with 1 molecules of agno3 only is |
| Answer» The secondary valence of metal cocl3.4nh3 if 1l and 1m solution react with 1 molecules of agno3 only is | |
| 29. |
0.59 g of the silver salt of an organic acid(molar mass 210) on ignition gave 0.36 g of silver. The basicity of the acid is :-a. 3 b. 2c. 1d. 4e. 5 |
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Answer» 0.59 g of the silver salt of an organic acid(molar mass 210) on ignition gave 0.36 g of silver. The basicity of the acid is :- a. 3 b. 2 c. 1 d. 4 e. 5 |
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| 30. |
What is the difference between alkyl and acyl group ? |
| Answer» What is the difference between alkyl and acyl group ? | |
| 31. |
When 90Th228 gets converted into 83Bi212, the number of α and β particles emitted will respectively be- |
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Answer» When 90Th228 gets converted into 83Bi212, the number of α and β particles emitted will respectively be- |
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| 32. |
Define substitution reaction. |
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Answer» Define substitution reaction. |
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| 33. |
For the given diagram, if ∠PMB is a right angle, then x∘= |
Answer»  For the given diagram, if ∠PMB is a right angle, then x∘= |
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| 34. |
In the Cannizzaro's reaction given below,The slowest step is: |
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Answer» In the Cannizzaro's reaction given below, The slowest step is: |
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| 35. |
How are colloids classified on the basis of Physical states of components Nature of dispersed phase and Interaction between dispersed phase and dispersion medium ? |
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Answer» How are colloids classified on the basis of Physical states of components Nature of dispersed phase and Interaction between dispersed phase and dispersion medium ? |
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| 36. |
Positive Tollens' test is observed for: |
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Answer» Positive Tollens' test is observed for: |
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| 37. |
Where P, Q, R and S are all major products of the respective reactions:Now choose the correct choice(s) from the following: |
Answer»  Where P, Q, R and S are all major products of the respective reactions: Now choose the correct choice(s) from the following: |
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| 38. |
what is the decreasing order of second ionization enthalpy of Titanium chromium and manganese |
| Answer» what is the decreasing order of second ionization enthalpy of Titanium chromium and manganese | |
| 39. |
In above compound total number of secondary hydrogen atoms are: |
Answer»  In above compound total number of secondary hydrogen atoms are: |
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| 40. |
Ifthe density of some lake water is 1.25 g mL−1and contains 92 g of Na+ions per kg of water, calculate the molality of Na+ions in the lake. |
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Answer» If |
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| 41. |
Calculate the number of electrons which will together weigh one gram. Calculate the mass and charge of onlmole of electrons |
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Answer» Calculate the number of electrons which will together weigh one gram. Calculate the mass and charge of onlmole of electrons |
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| 42. |
Why is standard electrode potential of F2 is greater than that of Cl2 ? |
| Answer» Why is standard electrode potential of F2 is greater than that of Cl2 ? | |
| 43. |
The one with maximum oxidising power is(1) Hypochlorous acid(2) Chlorous acid(3) Chloric acid(4) Perchloric acid |
| Answer» The one with maximum oxidising power is(1) Hypochlorous acid(2) Chlorous acid(3) Chloric acid(4) Perchloric acid | |
| 44. |
Which compounds can show geometrical isomerism ? |
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Answer» Which compounds can show geometrical isomerism ? |
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| 45. |
Predict the pinacol-pinacolone rearrangement product of: |
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Answer» Predict the pinacol-pinacolone rearrangement product of: |
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| 46. |
does aluminium react with water |
| Answer» does aluminium react with water | |
| 47. |
Predict the product C obtained in the following reaction of but-1-yne. CH3CH2−C≡CH+HCl→BHI−−→C |
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Answer» Predict the product C obtained in the following reaction of but-1-yne. |
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| 48. |
oxidation number of Cr in Cr05 i |
| Answer» oxidation number of Cr in Cr05 i | |
| 49. |
77.What is meant by dimensions |
| Answer» 77.What is meant by dimensions | |
| 50. |
in isothermal process q=-W does this mean that during isothermal process, amount of work done by tha system (-W) is equal to the amount of heat gained by the system(+q) if not what does it mean |
| Answer» in isothermal process q=-W does this mean that during isothermal process, amount of work done by tha system (-W) is equal to the amount of heat gained by the system(+q) if not what does it mean | |
