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. |
A mixture of ideal gases has n mole of monoatomic gas and m mole of diatomic gas and q moles of triatomic gas (non linear) at absolute temperature T. then the internal energy of mixture is what? |
| Answer» A mixture of ideal gases has n mole of monoatomic gas and m mole of diatomic gas and q moles of triatomic gas (non linear) at absolute temperature T. then the internal energy of mixture is what? | |
| 2. |
Calculate the volume of 0.005M KMnO4solution required to oxidise completely 2.7g of oxalic acid(H2C2O4) in acidic medium.According to equation 2KMnO4 +3H2SO4+5C2H2O4->K2SO4 +2MnSO4 +8H20 + 10CO2 |
| Answer» Calculate the volume of 0.005M KMnO4solution required to oxidise completely 2.7g of oxalic acid(H2C2O4) in acidic medium.According to equation 2KMnO4 +3H2SO4+5C2H2O4->K2SO4 +2MnSO4 +8H20 + 10CO2 | |
| 3. |
Which of the following molecules is non-polar in nature? |
|
Answer» Which of the following molecules is non-polar in nature? |
|
| 4. |
Is law of mass action incorrect? What are the limitations of law of mass action? |
| Answer» Is law of mass action incorrect? What are the limitations of law of mass action? | |
| 5. |
45 When phenol reacts with conc. nitric acid + sulphuric acid it gives 2,4,6- trinitro phenol and 1,4-benzoquinone |
| Answer» 45 When phenol reacts with conc. nitric acid + sulphuric acid it gives 2,4,6- trinitro phenol and 1,4-benzoquinone | |
| 6. |
Whatis the covalence of nitrogen in N2O5? |
|
Answer» What |
|
| 7. |
Pragya tested the solubility of three different substances at different temperatures and collected the data as given below (results are given in the following table, as grams of substance dissolved in 100 grams of water to form a saturated solution).a. What mass of potassium nitrate would be needed to produce a saturated solution of potassium nitrate in 50 grams of water at 313 K? |
Answer» Pragya tested the solubility of three different substances at different temperatures and collected the data as given below (results are given in the following table, as grams of substance dissolved in 100 grams of water to form a saturated solution).![]() a. What mass of potassium nitrate would be needed to produce a saturated solution of potassium nitrate in 50 grams of water at 313 K? |
|
| 8. |
The normality of 100% (weight/volume) acetic acid is Options:1 N 10 N 1.7 N 0.83 N |
| Answer» The normality of 100% (weight/volume) acetic acid is Options:1 N 10 N 1.7 N 0.83 N | |
| 9. |
According to the Raoult's law the relative decrease in the solvent vapour pressure over the solution containing a nonvolatile solute is equal to the |
|
Answer» According to the Raoult's law the relative decrease in the solvent vapour pressure over the solution containing a nonvolatile solute is equal to the |
|
| 10. |
Hybridised orbitals form only sigma bonds? |
| Answer» Hybridised orbitals form only sigma bonds? | |
| 11. |
10. Assertion Ehtene is more reactive than propene towards electrophlic attack. Reason. Propene is stabilsed by no bond resonance |
| Answer» 10. Assertion Ehtene is more reactive than propene towards electrophlic attack. Reason. Propene is stabilsed by no bond resonance | |
| 12. |
What is Coupling reaction ? Explain with one example |
|
Answer» What is Coupling reaction ? Explain with one example |
|
| 13. |
Calculate packing fraction from the following figure to two decimal places. Multiply it by 100 and enter the value. ___ |
|
Answer» Calculate packing fraction from the following figure to two decimal places. Multiply it by 100 and enter the value.
|
|
| 14. |
a 1st order reaction graphs between t1/2 & concentration i |
| Answer» a 1st order reaction graphs between t1/2 & concentration i | |
| 15. |
3.5 gm of solid Barium fluoride is added to water forming 1 lit of solution at 25°C. Solubility product of salt is 4 × 10–6. What will be the minimum volume of water to be added to above solution to dissolve the salt completely. (At. wt. Ba : 137, F : 19) |
| Answer» 3.5 gm of solid Barium fluoride is added to water forming 1 lit of solution at 25°C. Solubility product of salt is 4 × 10–6. What will be the minimum volume of water to be added to above solution to dissolve the salt completely. (At. wt. Ba : 137, F : 19) | |
| 16. |
how does gypsum differs from hydrated copper sulphate |
| Answer» how does gypsum differs from hydrated copper sulphate | |
| 17. |
Permanganate ion teacts with bromide ion in basic medium to give manganese dioxide and bromate ion. Write balanced ionic equation for the reactio |
| Answer» Permanganate ion teacts with bromide ion in basic medium to give manganese dioxide and bromate ion. Write balanced ionic equation for the reactio | |
| 18. |
Find the range of the function y=x/1+x^2 |
| Answer» Find the range of the function y=x/1+x^2 | |
| 19. |
When a polyelectronic atom has atital spin=S it gives rise to (2S+1)spin quantumstates known as spin multiplicity.what is spin multiplicity of nitrogen atom in its ground state |
| Answer» When a polyelectronic atom has atital spin=S it gives rise to (2S+1)spin quantumstates known as spin multiplicity.what is spin multiplicity of nitrogen atom in its ground state | |
| 20. |
Which of the following compounds display geometrical isomerism? |
|
Answer» Which of the following compounds display geometrical isomerism? |
|
| 21. |
In which of the following orbital diagrams, both Pauli exclusion principle and Hund's rule are violated ? |
|
Answer» In which of the following orbital diagrams, both Pauli exclusion principle and Hund's rule are violated ? |
|
| 22. |
The order of basic strength among the following amines in benzene will be |
|
Answer» The order of basic strength among the following amines in benzene will be |
|
| 23. |
Find the total number of oxygen atoms in 6×106 formula units of the complex [Co(H2O)6]Cl2. |
|
Answer» Find the total number of oxygen atoms in 6×106 formula units of the complex [Co(H2O)6]Cl2. |
|
| 24. |
3 percent solution of glucose is isotonic with 1 percent of a non volatile nonelectrolyte substance . The molecular mass of the substance would be |
| Answer» 3 percent solution of glucose is isotonic with 1 percent of a non volatile nonelectrolyte substance . The molecular mass of the substance would be | |
| 25. |
Differentiate between plasma and BEC (Bose Einstein condensate) |
| Answer» Differentiate between plasma and BEC (Bose Einstein condensate) | |
| 26. |
why vinyl chloride doesnot form grignard reagent on reaction with mg in the prescence of ether |
| Answer» why vinyl chloride doesnot form grignard reagent on reaction with mg in the prescence of ether | |
| 27. |
Which of the following metal ions will have maximum number of unpaired electrons? |
|
Answer» Which of the following metal ions will have maximum number of unpaired electrons? |
|
| 28. |
58.For hydrogen gas, cp-cv=x and for oxygen gas cp-cv=y where cp and cv are molar specific heats. Then the relation between cp and cv are? |
| Answer» 58.For hydrogen gas, cp-cv=x and for oxygen gas cp-cv=y where cp and cv are molar specific heats. Then the relation between cp and cv are? | |
| 29. |
One mole of an ideal gas (γ=1.4) is adiabatically compressed so that its temperature rises from 27oC to 35oC. The change in the internal energy of the gas is (given R = 80. J / mole / K) |
|
Answer» One mole of an ideal gas (γ=1.4) is adiabatically compressed so that its temperature rises from 27oC to 35oC. The change in the internal energy of the gas is (given R = 80. J / mole / K) |
|
| 30. |
The number of repeating units of monomers in polymers is: |
|
Answer» The number of repeating units of monomers in polymers is: |
|
| 31. |
29. if each orbit can hold maximum of 3 electron the number of elements in 2nd period of periodic table is |
| Answer» 29. if each orbit can hold maximum of 3 electron the number of elements in 2nd period of periodic table is | |
| 32. |
33. for a first order reaction with half life of 150sec the time taken for the concentration of the reactant to fall from M/10 to M/100 will be approximately |
| Answer» 33. for a first order reaction with half life of 150sec the time taken for the concentration of the reactant to fall from M/10 to M/100 will be approximately | |
| 33. |
The numbers of significant figures in 1.84 x10-27 kg are: |
|
Answer» The numbers of significant figures in 1.84 x10-27 kg are: |
|
| 34. |
In the reaction:X is: |
|
Answer» In the reaction: |
|
| 35. |
Number of moles of electrons present in 34 g of NH3 is: |
|
Answer» Number of moles of electrons present in 34 g of NH3 is: |
|
| 36. |
Which of the following sets of reactions cannot give a carboxylic acid as the final product? |
|
Answer» Which of the following sets of reactions cannot give a carboxylic acid as the final product? |
|
| 37. |
A dimentionally consistent relation for the volume "V" of a liquid of cofficient of viscosity "n" per second through a tube of radius "r"and length "l" and having a pressure difference "P" across its end is1.V=πPr4÷8nl2.V=πn÷8Pr43.V=8Pn÷πr44.V=πPn÷8r4 |
|
Answer» A dimentionally consistent relation for the volume "V" of a liquid of cofficient of viscosity "n" per second through a tube of radius "r"and length "l" and having a pressure difference "P" across its end is 1.V=πPr4÷8nl 2.V=πn÷8Pr4 3.V=8Pn÷πr4 4.V=πPn÷8r4 |
|
| 38. |
The potential energy of a body of mass 3 kg on the surface of a planet is 54 joule. The escape velocity will be (in ms) |
|
Answer» The potential energy of a body of mass 3 kg on the surface of a planet is 54 joule. The escape velocity will be (in ms) |
|
| 39. |
Identify compound X in the following sequences of reactions. |
|
Answer» Identify compound X in the following sequences of reactions. |
|
| 40. |
(CH_3)_2-C=CH_2 \overset{KMnO_4/H^+}{→ Products} Which one of the following is one of the products formed? (1) CH_3COOH (2) CH_3CHO (3) CH_3O (4) CO_2 |
| Answer» (CH_3)_2-C=CH_2 \overset{KMnO_4/H^+}{→ Products} Which one of the following is one of the products formed? (1) CH_3COOH (2) CH_3CHO (3) CH_3O (4) CO_2 | |
| 41. |
25. What is the hybridisation of carbons in CH2CH3OH by using formula |
| Answer» 25. What is the hybridisation of carbons in CH2CH3OH by using formula | |
| 42. |
Studies on the elevation in boiling point of Ca(NO3)2 gives its molar mass to be 131.2 g/mol. The degree of dissociation of Ca(NO3)2 is: |
|
Answer» Studies on the elevation in boiling point of Ca(NO3)2 gives its molar mass to be 131.2 g/mol. The degree of dissociation of Ca(NO3)2 is: |
|
| 43. |
An organic compound contains 78% (by wt.) carbon and remaining percentage of hydrogen. The right option for the empirical formula of this compound is : [Atomic wt. of C is 12, H is 1] |
|
Answer» An organic compound contains 78% (by wt.) carbon and remaining percentage of hydrogen. The right option for the empirical formula of this compound is : [Atomic wt. of C is 12, H is 1] |
|
| 44. |
Calculate r and a relationship from the following figure. All spheres are of equal radius r. If r = x * a, round off x to 2 decimals and type 100x. ___ |
|
Answer» Calculate r and a relationship from the following figure. All spheres are of equal radius r.
If r = x * a, round off x to 2 decimals and type 100x. |
|
| 45. |
Which of the following species act as an amphiprotic species in the following reactions?HCl(aq)+H2O(aq)⇌H3O+(aq)+Cl−(aq)NH3(aq)+H2O(aq)⇌NH+4(aq)+OH−(aq) |
|
Answer» Which of the following species act as an amphiprotic species in the following reactions? |
|
| 46. |
What are the conditions for acidity and basicity in organic compounds?? What are the factors were they depend on?? And give one example for each factors and conditions |
|
Answer» What are the conditions for acidity and basicity in organic compounds?? What are the factors were they depend on?? And give one example for each factors and conditions |
|
| 47. |
13.H2o2,ko2,Na2o2,o2 increasing order of o-o bond length |
| Answer» 13.H2o2,ko2,Na2o2,o2 increasing order of o-o bond length | |
| 48. |
Which of the following statements is not correct about order of a reaction ? (a) The order of a reaction can be fractional number (b) Order of a reaction is experimentally determined quantity (c) The order of reaction is always equal to the sum of the stoichiometric coefficients of reactants in the balanced chemical equation for a reaction (d) The order of a reaction is the sum of the powers of molar concentration of the reactants in the rate law expression. |
|
Answer» Which of the following statements is not correct about order of a reaction ? |
|
| 49. |
Phthalic anhydrideLiAlH4−−−−→(A)PCC−−−→(B)H+−−−→N2H4(C) Product (C) is: |
|
Answer» Phthalic anhydrideLiAlH4−−−−→(A)PCC−−−→(B)H+−−−→N2H4(C) Product (C) is: |
|
| 50. |
Calculate mass of 3g molecules of HNO3. |
|
Answer» Calculate mass of 3g molecules of HNO3. |
|