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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. |
What is componendo dividendo? |
| Answer» What is componendo dividendo? | |
| 2. |
what is thermite process? |
| Answer» what is thermite process? | |
| 3. |
Aluminiumcrystallises in a cubic close-packed structure. Its metallic radiusis 125 pm.(i) What is the length of the side of the unit cell?(ii)Howmany unit cells are there in 1.00 cm3of aluminium? |
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Answer» Aluminium (i) (ii) |
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| 4. |
What is th hybridisation of ICl2- |
| Answer» What is th hybridisation of ICl2- | |
| 5. |
A sample of aluminium has a mass of 54.0 g. What is the mass of the same number of magnesium atoms: (At. wt. Al = 27 u, Mg = 24 u) |
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Answer» A sample of aluminium has a mass of 54.0 g. What is the mass of the same number of magnesium atoms: |
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| 6. |
12. Which of the following will give 6 isomers and how A)[Co(en)NH3Cl2]Cl B) [Co(ox)3]Cl3 C) [Co(en)2Br2]Cl |
| Answer» 12. Which of the following will give 6 isomers and how A)[Co(en)NH3Cl2]Cl B) [Co(ox)3]Cl3 C) [Co(en)2Br2]Cl | |
| 7. |
It is a general principle that the lower the energy a system contains, it is |
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Answer» It is a general principle that the lower the energy a system contains, it is |
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| 8. |
The vapour pressure of pure benzene at 50oC is 268 mm of Hg. How many moles of non-volatile solute per mole of benzene are required to prepare a solution of benzene having a vapour pressure 167 mm of Hg at 50oC ? |
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Answer» The vapour pressure of pure benzene at 50oC is 268 mm of Hg. How many moles of non-volatile solute per mole of benzene are required to prepare a solution of benzene having a vapour pressure 167 mm of Hg at 50oC ? |
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| 9. |
A radiation of energy E (E>E0) falls on a metal whose threshold frequency is E0. The Kinetic energy of the emitted electrons is given by: |
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Answer» A radiation of energy E (E>E0) falls on a metal whose threshold frequency is E0. The Kinetic energy of the emitted electrons is given by: |
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| 10. |
Consider the following reactions: Which of the following is/are true regarding the products formed? |
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Answer» Consider the following reactions: |
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| 11. |
If a cube has edge length 'a' then at what minimum distance will the atoms placed at the corners touch each other? |
| Answer» If a cube has edge length 'a' then at what minimum distance will the atoms placed at the corners touch each other? | |
| 12. |
lim x tending 0 1/x² - cotx = ? |
| Answer» lim x tending 0 1/x² - cotx = ? | |
| 13. |
Three moles of an ideal gas initially at 27oC and 40 L volume are compressed isothermally and reversibly till the final volume of the gas is 10 L. Calculate q for the process.Take:log(0.25)=0.602 |
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Answer» Three moles of an ideal gas initially at 27oC and 40 L volume are compressed isothermally and reversibly till the final volume of the gas is 10 L. Calculate q for the process. |
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| 14. |
ntQues) 3.2 moles of HI(g) were heated in a sealed bulb at 444^°C till the equilibrium was reached. It's degree of dissociation was found to be 20%. Calculate the number of moles of hydorgen iodide, hydorgen and iodine present at the equilbrium point and determine the value of equilbrium constant for the reaction 2HI(g)→H2(g) + I2(g). Considering the volume of the container 1 L. n |
| Answer» ntQues) 3.2 moles of HI(g) were heated in a sealed bulb at 444^°C till the equilibrium was reached. It's degree of dissociation was found to be 20%. Calculate the number of moles of hydorgen iodide, hydorgen and iodine present at the equilbrium point and determine the value of equilbrium constant for the reaction 2HI(g)→H2(g) + I2(g). Considering the volume of the container 1 L. n | |
| 15. |
If the rate of reaction increases to two times with every 10degree rise in temperature , then if we raise the temperature by 40 degree , then rate of the reaction will be |
| Answer» If the rate of reaction increases to two times with every 10degree rise in temperature , then if we raise the temperature by 40 degree , then rate of the reaction will be | |
| 16. |
The atoms of copper contain electrons and the atoms of rubber also contain electrons. Then why does copper conduct electricity but rubber doesn't conduct electricity ? |
| Answer» The atoms of copper contain electrons and the atoms of rubber also contain electrons. Then why does copper conduct electricity but rubber doesn't conduct electricity ? | |
| 17. |
meaning of mule |
| Answer» meaning of mule | |
| 18. |
In the reaction, 2Al + 6HCl = 2Al^3+ + 6Cl^- + 3H2 (a) 11.2L H2 at STP is produced for every mole of HCl consumed. (b) 6L HCl is consumed for every 3L H2 produced. (c) 33.6L H2 is produced regardless of temperature and pressure for every mole Al that reacts. (d) 67.2L H2 at STP is produced for every mole Al that reacts. |
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Answer» In the reaction, 2Al + 6HCl = 2Al^3+ + 6Cl^- + 3H2 (a) 11.2L H2 at STP is produced for every mole of HCl consumed. (b) 6L HCl is consumed for every 3L H2 produced. (c) 33.6L H2 is produced regardless of temperature and pressure for every mole Al that reacts. (d) 67.2L H2 at STP is produced for every mole Al that reacts. |
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| 19. |
what is the difference between oxidation state and covalency? why do they differ why the covalency of al in alcl[(h2o)5]is 6 and the oxidation state is 3 how to determine the oxidation state and the covalency |
| Answer» what is the difference between oxidation state and covalency? why do they differ why the covalency of al in alcl[(h2o)5]is 6 and the oxidation state is 3 how to determine the oxidation state and the covalency | |
| 20. |
10. OHC-HC=O+Alk.KMnO4 gives? |
| Answer» 10. OHC-HC=O+Alk.KMnO4 gives? | |
| 21. |
HEAT OF NEUTRALISATION OF HF IS 1.57.3KJ/MOL 2.57.3KJ/MOL 4.NONE |
| Answer» HEAT OF NEUTRALISATION OF HF IS 1.57.3KJ/MOL 2.<57.3KJ/MOL 3.>57.3KJ/MOL 4.NONE | |
| 22. |
31. pressure of 1 g of an ideal gas A at 27 is found to be 2 bar . When 2 g of another ideal gas B is introduce in the same flask at same temperature the pressure becomes 3 bar . What would be the ratio of their molecular masses ? |
| Answer» 31. pressure of 1 g of an ideal gas A at 27 is found to be 2 bar . When 2 g of another ideal gas B is introduce in the same flask at same temperature the pressure becomes 3 bar . What would be the ratio of their molecular masses ? | |
| 23. |
Structure of potassium ferrocyanide K4[Fe(CN)6] |
| Answer» Structure of potassium ferrocyanide K4[Fe(CN)6] | |
| 24. |
If 0.2M aq.solution of KCl is isotonic with 0.2M K2SO4 at same temperature then van't Hoff factor of K2SO4 is(1)0.2(2)0.5(3)0.8(4)0.3 |
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Answer» If 0.2M aq.solution of KCl is isotonic with 0.2M K2SO4 at same temperature then van't Hoff factor of K2SO4 is (1)0.2 (2)0.5 (3)0.8 (4)0.3 |
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| 25. |
Write the names andstructures of the monomers of the following polymers:(i) Buna-S (ii) Buna-N(iii) Dacron (iv) Neoprene |
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Answer» Write the names and (i) (iii) Dacron (iv) Neoprene |
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| 26. |
Question 48 Give the formulae of the stable binary compounds that would be formed by the combination of following pairs of elements.(a) Mg and N2(b) Li and O2(c) Al and Cl2(d) K and O2 |
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Answer» Question 48 |
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| 27. |
On a humid summer day, the partial pressure of water in the atmosphere is 18 mm Hg. The barometric pressure on this day is as high as 766 mm Hg, Calculate the partial pressures of nitrogen and oxygen if 78.0% of the dry atmosphere is composed of nitrogen molecules and 21.0% of oxygen? (1% of the dry atmosphere is composed of all other gases) |
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Answer» On a humid summer day, the partial pressure of water in the atmosphere is 18 mm Hg. The barometric pressure on this day is as high as 766 mm Hg, Calculate the partial pressures of nitrogen and oxygen if 78.0% of the dry atmosphere is composed of nitrogen molecules and 21.0% of oxygen? (1% of the dry atmosphere is composed of all other gases) |
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| 28. |
Major product formed when o-chloro trifluoromethyl benzene is treated with NaNH2 in presence of liq. NH |
| Answer» Major product formed when o-chloro trifluoromethyl benzene is treated with NaNH2 in presence of liq. NH | |
| 29. |
Predict the products. |
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Answer» Predict the products. |
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| 30. |
19.Electrode potential for the following half cell reactions are Zn=Zn^+2+2e;E^°=+0.75VFe=Fe^+2+2e;E^°=+0.44V The EMF for the cell reaction Fe^+2+Zn=Zn^+2+Fe will be |
| Answer» 19.Electrode potential for the following half cell reactions are Zn=Zn^+2+2e;E^°=+0.75VFe=Fe^+2+2e;E^°=+0.44V The EMF for the cell reaction Fe^+2+Zn=Zn^+2+Fe will be | |
| 31. |
48. The limiting molar conductivity of kcl, kno3, Agno3 , are 14.99, 14.50,13.34 respectively at 25^° C the limiting molar conductivity of Agcl at this temperature will be |
| Answer» 48. The limiting molar conductivity of kcl, kno3, Agno3 , are 14.99, 14.50,13.34 respectively at 25^° C the limiting molar conductivity of Agcl at this temperature will be | |
| 32. |
Question 70 (i)Work out the following multiplication.12345679∗ 9______________ Use the result to answer the following question.What will be 12345679 × 45? |
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Answer» Question 70 (i) Work out the following multiplication. 12345679∗ 9______________ Use the result to answer the following question. What will be 12345679 × 45? |
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| 33. |
Arrange the following in order of their reactvity toward decarboxylation with sodalime.1.benzoic acid2.prop-2-enoicacid3.prop-2-ynoicacid4.propanaoicacid |
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Answer» Arrange the following in order of their reactvity toward decarboxylation with sodalime. 1.benzoic acid 2.prop-2-enoicacid 3.prop-2-ynoicacid 4.propanaoicacid |
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| 34. |
shouldnt tert butyl bromide undergo sn1 instead of e1 |
| Answer» shouldnt tert butyl bromide undergo sn1 instead of e1 | |
| 35. |
Heat is supplied to a diatomic gas at constant pressure. The ratio of is |
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Answer» Heat is supplied to a diatomic gas at constant pressure. The ratio of is |
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| 36. |
What is hydration energy?How does it help in solubililty of ionic cimpounds?Explain in detail |
| Answer» What is hydration energy?How does it help in solubililty of ionic cimpounds?Explain in detail | |
| 37. |
A piece of ice falls from a height h so that it melts completely. Only half of the heat produced is absorbed by the ice and all energy of ice gets converted into heat during its fall. The value of h is ( Latent heat of ice is 3.4×105Jkg−1 and g=10Nkg−1 ) |
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Answer» A piece of ice falls from a height h so that it melts completely. Only half of the heat produced is absorbed by the ice and all energy of ice gets converted into heat during its fall. The value of h is ( Latent heat of ice is 3.4×105Jkg−1 and g=10Nkg−1 ) |
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| 38. |
An alkybromide(A) On treatment with Na and ether gives a hydrocarbon (B). (B) on treatment with HBr and Peroxide gives Br - (CH2)6−Br compound (A) is |
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Answer» An alkybromide(A) On treatment with Na and ether gives a hydrocarbon (B). (B) on treatment with HBr and Peroxide gives Br - (CH2)6−Br compound (A) is |
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| 39. |
Complexes in which ligand substitution occurs fast are called |
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Answer» Complexes in which ligand substitution occurs fast are called |
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| 40. |
35. What is the correct way of writing electronic configuration? E.g. for Zn (which is correct between the two) 1)1s2 2s2 2p6 3s2 3p6 3d10 4s2 2) 1s2 2s2. 2p6. 3s2. 3p6. 4s2. 3d10 & Therefore, how would we find kernel electrons?Will we exclude 4s2 subshell or 3d10 subshell while writing kernels? |
| Answer» 35. What is the correct way of writing electronic configuration? E.g. for Zn (which is correct between the two) 1)1s2 2s2 2p6 3s2 3p6 3d10 4s2 2) 1s2 2s2. 2p6. 3s2. 3p6. 4s2. 3d10 & Therefore, how would we find kernel electrons?Will we exclude 4s2 subshell or 3d10 subshell while writing kernels? | |
| 41. |
16.0.5 M HCl solution has ions Hg++ , Cd++ , Sr++ , Fe++ , Cu++. To pass the H2S gas in this solution, which are precipitated out : (a) Cd+2 , Fe+2 , Sr+2 (b) Cd+2 , Hg+2 , Cu+2 (c) Hg+2 , Cu+2 , Fe+2 (d) Cu+2 , Sr+2 , Fe+2 |
| Answer» 16.0.5 M HCl solution has ions Hg++ , Cd++ , Sr++ , Fe++ , Cu++. To pass the H2S gas in this solution, which are precipitated out : (a) Cd+2 , Fe+2 , Sr+2 (b) Cd+2 , Hg+2 , Cu+2 (c) Hg+2 , Cu+2 , Fe+2 (d) Cu+2 , Sr+2 , Fe+2 | |
| 42. |
79. Aerial oxidation of cummene |
| Answer» 79. Aerial oxidation of cummene | |
| 43. |
The chloride of a metal contains 71% of chlorine by mass and its vapour density is 50. The atomicmass of metal will be?? |
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Answer» The chloride of a metal contains 71% of chlorine by mass and its vapour density is 50. The atomic mass of metal will be?? |
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| 44. |
Let f(x)={x}+{-x} What is the period of the function? |
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Answer» Let f(x)={x}+{-x} What is the period of the function? |
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| 45. |
The conductivity of 0.1 N NaOH solution is 0.022 S cm–1. When equal volume of 0.1 N HCl solution is added, the conductivity of resul†an t solution decreases to 0.0055 S cm–1. The equivalent conductivity in S cm2 eq–1 of NaCl solution is |
| Answer» The conductivity of 0.1 N NaOH solution is 0.022 S cm–1. When equal volume of 0.1 N HCl solution is added, the conductivity of resul†an t solution decreases to 0.0055 S cm–1. The equivalent conductivity in S cm2 eq–1 of NaCl solution is | |
| 46. |
What is correct sequence of the increasing coagulation value of the following electrolyte for the coagulation of Fe(OH)3 solution?(i)Na3PO4, (ii)KCl, (iii)K2SO4, (iv)K4[Fe(CN)6] |
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Answer» What is correct sequence of the increasing coagulation value of the following electrolyte for the coagulation of Fe(OH)3 solution? |
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| 47. |
9. How many atoms are there in a cubic unnit cell having one atom on each corner and two atoms on each body diagonal of a cube? |
| Answer» 9. How many atoms are there in a cubic unnit cell having one atom on each corner and two atoms on each body diagonal of a cube? | |
| 48. |
The frequency of radiation emitted when the electron falls from n=4 to n=1 in a hydrogen atom will be?? |
| Answer» The frequency of radiation emitted when the electron falls from n=4 to n=1 in a hydrogen atom will be?? | |
| 49. |
Find the volume of water (in mL) added to 50 mL concentrated nitric acid HNO3 (d=1.52 g ml–1, 69% by mass) that forms diluted nitric acid (d=1.15 g mL–1, 19% by mass HNO3). |
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Answer» Find the volume of water (in mL) added to 50 mL concentrated nitric acid HNO3 (d=1.52 g ml–1, 69% by mass) that forms diluted nitric acid (d=1.15 g mL–1, 19% by mass HNO3). |
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| 50. |
Atoms P Q R located at corner,fcc,bcc in a cubic lattice. Suppose 2 atoms are diagonally missing from lattice from corner.What is the formula? |
| Answer» Atoms P Q R located at corner,fcc,bcc in a cubic lattice. Suppose 2 atoms are diagonally missing from lattice from corner.What is the formula? | |
