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. |
25.Which of the following have least polar bond?why? Options: H–F O–H C–H N–H |
| Answer» 25.Which of the following have least polar bond?why? Options: H–F O–H C–H N–H | |
| 2. |
If the radius of a metal atom is 2.00 ∘A and its crystal structure is fcc lattice, what is the volume (in cm3) of one unit cell? |
|
Answer» If the radius of a metal atom is 2.00 ∘A and its crystal structure is fcc lattice, what is the volume (in cm3) of one unit cell? |
|
| 3. |
Which of the following alcohols reacts fastest with Lucas reagent?[0.77 Mark] |
|
Answer» Which of the following alcohols reacts fastest with Lucas reagent? |
|
| 4. |
Consider the reaction N2(g)+3H2(g)⇌2NH3(g) The equilibrium constant of the above reaction is Kp. If pure ammonia is left to dissociate, the partial pressure of ammonia at equilibrium is given by: (Assume that ) PNH3<<Ptotal at equilibrium) |
|
Answer» Consider the reaction |
|
| 5. |
Why doesn't an electron loose energy when revolving in a stationary orbit? |
| Answer» Why doesn't an electron loose energy when revolving in a stationary orbit? | |
| 6. |
6.02×10^23Significant figures=3How? |
|
Answer» 6.02×10^23 Significant figures=3 How? |
|
| 7. |
Predict the product of reaction of I2 with H2O2 in basic medium. |
|
Answer» Predict the product of reaction of I2 with H2O2 in basic medium. |
|
| 8. |
How to find unpaired electron? |
| Answer» How to find unpaired electron? | |
| 9. |
Pure ammonia is placed in a vessel at temperature where its dissociation constant (α) is appreciable. At equilibrium |
|
Answer» Pure ammonia is placed in a vessel at temperature where its dissociation constant (α) is appreciable. At equilibrium |
|
| 10. |
19.How to find Fnet in any direction?? |
| Answer» 19.How to find Fnet in any direction?? | |
| 11. |
In a H - atom, the transition takes place form L to K shell. If R = 1.08×107m−1. The wave length of the light obsorbed in nearly: |
|
Answer» In a H - atom, the transition takes place form L to K shell. If R = 1.08×107m−1. The wave length of the light obsorbed in nearly: |
|
| 12. |
the correct set of four quantum no. for the valance electron of kr having highest valu of n+l |
| Answer» the correct set of four quantum no. for the valance electron of kr having highest valu of n+l | |
| 13. |
The ratio of the radii of 13Al27 and 52Te125 nuclei is |
|
Answer» The ratio of the radii of 13Al27 and 52Te125 nuclei is |
|
| 14. |
CsCl crystals are formed by bcc crystal lattice where Cl− occupies the corners and Cs+ occupies the centre of the cube.The density of crystalline CsCl is 4 g/cc. The effective volume occupied by a single CsCl ion pair in the crystal is [Molar mass of CsCl=168 g mol−1 |
|
Answer» CsCl crystals are formed by bcc crystal lattice where Cl− occupies the corners and Cs+ occupies the centre of the cube. The density of crystalline CsCl is 4 g/cc. The effective volume occupied by a single CsCl ion pair in the crystal is [Molar mass of CsCl=168 g mol−1 |
|
| 15. |
Consider the following redox reactions given below. Identify which of the following the example of a disproportionation reaction? |
|
Answer» Consider the following redox reactions given below. Identify which of the following the example of a disproportionation reaction? |
|
| 16. |
The specific conductance (K) of an electrolyte of 0.1 N concentration is related to equivalent conductance (Λ) by the following |
|
Answer» The specific conductance (K) of an electrolyte of 0.1 N concentration is related to equivalent conductance (Λ) by the following |
|
| 17. |
Which of the following is not optically active? |
|
Answer» Which of the following is not optically active? |
|
| 18. |
What will be the products of reaction if methoxybenzene reacts with HI |
|
Answer» What will be the products of reaction if methoxybenzene reacts with HI |
|
| 19. |
Define hdronium ion |
| Answer» Define hdronium ion | |
| 20. |
11. When one mole of an ideal gas is compressed to half its initial volume and simultaneously heated to twice its initial temperature, the change in entropy is 1) Cv ln 2 2) Cp ln 2 3) R ln 2 4) ( Cv - R ) ln 2 |
| Answer» 11. When one mole of an ideal gas is compressed to half its initial volume and simultaneously heated to twice its initial temperature, the change in entropy is 1) Cv ln 2 2) Cp ln 2 3) R ln 2 4) ( Cv - R ) ln 2 | |
| 21. |
number of unit cells in 10g NACL |
| Answer» number of unit cells in 10g NACL | |
| 22. |
47. how to get bond order of compounds whose electrons are greater than 20 like KO2,Na2O2 etc |
| Answer» 47. how to get bond order of compounds whose electrons are greater than 20 like KO2,Na2O2 etc | |
| 23. |
An LPG cylinder weighs 14.8 kg when empty. When it is full, it weighs 29 kg and after consumption, the weight of the cylinder reduces to 23.2 kg. Find out the volume of n-butane in cubic metres used up at 27∘C and 1 atm.[Molecular mass of n-butane = 58 g/mol] |
|
Answer» An LPG cylinder weighs 14.8 kg when empty. When it is full, it weighs 29 kg and after consumption, the weight of the cylinder reduces to 23.2 kg. Find out the volume of n-butane in cubic metres used up at 27∘C and 1 atm. [Molecular mass of n-butane = 58 g/mol] |
|
| 24. |
Decimolar solution of potassium ferricyanide, has osmotic pressure of 3.94 atm at 27ºC. Hence percent ionisation of the solute is: |
|
Answer» Decimolar solution of potassium ferricyanide, |
|
| 25. |
Which of the following is the correct expression for a reduced mass (μ) of a hydrogen like atoms ?(mass of electron :me , mass of nucleus :mn) |
|
Answer» Which of the following is the correct expression for a reduced mass (μ) of a hydrogen like atoms ? |
|
| 26. |
Benzaldehyde differs from acetaldehyde in this respect that the former does not react with |
|
Answer» Benzaldehyde differs from acetaldehyde in this respect that the former does not react with |
|
| 27. |
Define law of mass action with mathematical derivation |
| Answer» Define law of mass action with mathematical derivation | |
| 28. |
The K.E of one mole of an ideal gas is E=5/2 RT. Then Cρ will be |
|
Answer» The K.E of one mole of an ideal gas is E=5/2 RT. Then Cρ will be |
|
| 29. |
The product of electrolysis pf aqueous Na2SO4 with inert electrodes is |
| Answer» The product of electrolysis pf aqueous Na2SO4 with inert electrodes is | |
| 30. |
20g of N2 is compressed adiabatically from 20dm3 to 10dm3. calculate final temperature, q, w, Δu, ΔH |
| Answer» 20g of N2 is compressed adiabatically from 20dm3 to 10dm3. calculate final temperature, q, w, Δu, ΔH | |
| 31. |
One mole of an ideal gas at temperature T1 expands according to the law PV2=a(constant). The work done by the gas till temperature of gas becomes T2 is: |
|
Answer» One mole of an ideal gas at temperature T1 expands according to the law PV2=a(constant). The work done by the gas till temperature of gas becomes T2 is: |
|
| 32. |
The conductivity of a saturated solution of BaSO4 is 3.06×10−6ohm−1cm−1 and its molar conductance is 1.53 ohm−1 cm2 mol−1. What will be the the Ksp of BaSO4 ? |
|
Answer» The conductivity of a saturated solution of BaSO4 is 3.06×10−6ohm−1cm−1 and its molar conductance is 1.53 ohm−1 cm2 mol−1. What will be the the Ksp of BaSO4 ? |
|
| 33. |
a 3:2 molar ratio mixture of FeO and fe2o3 react with oxygen to produce a 2:3 molar ratio mixture of feo and Fe2O3. find mass of oxygen gas required per mol of initial mixture |
| Answer» a 3:2 molar ratio mixture of FeO and fe2o3 react with oxygen to produce a 2:3 molar ratio mixture of feo and Fe2O3. find mass of oxygen gas required per mol of initial mixture | |
| 34. |
The maximum covalency of oxygen is: |
|
Answer» The maximum covalency of oxygen is: |
|
| 35. |
Integral of vdt from 0 to t |
| Answer» Integral of vdt from 0 to t | |
| 36. |
20. What is the lUPAC name of compound. COOH-CH=CH-COOH |
| Answer» 20. What is the lUPAC name of compound. COOH-CH=CH-COOH | |
| 37. |
An ideal solution was prepared by dissolving some amount of cane sugar ( non-volatile) in 0.9 moles of water. The solution was then cooled just below its freezing temperature (271 K) where some ice get seperated out. The remaining aqueous solution registered a vapour pressure of 700 torr at 373 K. Calculate the mass of ice seperated out, if the molar heat of fusion of water is 6 kJ. Kf=1.86 K kg mol−1 |
|
Answer» An ideal solution was prepared by dissolving some amount of cane sugar ( non-volatile) in 0.9 moles of water. The solution was then cooled just below its freezing temperature (271 K) where some ice get seperated out. The remaining aqueous solution registered a vapour pressure of 700 torr at 373 K. Calculate the mass of ice seperated out, if the molar heat of fusion of water is 6 kJ. Kf=1.86 K kg mol−1 |
|
| 38. |
Describe the process for the production of Lime-soda glass. |
|
Answer» Describe the process for the production of Lime-soda glass. |
|
| 39. |
Which of the following reactions will give a Hoffmann product as the major product? |
|
Answer» Which of the following reactions will give a Hoffmann product as the major product? |
|
| 40. |
Column-I-orbital, Column-II-nodal planes, Column-III-Plots The only correct combination for an orbital having zero angular node is: |
|
Answer» Column-I-orbital, Column-II-nodal planes, Column-III-Plots
The only correct combination for an orbital having zero angular node is: |
|
| 41. |
18 In the electrolysis of aqueous solution of NaOH, 2.8 L of O2 at NTP was liberated at the anode . how much H2 was liberated at cathode? |
| Answer» 18 In the electrolysis of aqueous solution of NaOH, 2.8 L of O2 at NTP was liberated at the anode . how much H2 was liberated at cathode? | |
| 42. |
33. What is the volume of a face centred cubic unit cell,when its density is 2.0g cn3 and molar mass of the substance is 60.23g mol-1 |
| Answer» 33. What is the volume of a face centred cubic unit cell,when its density is 2.0g cn3 and molar mass of the substance is 60.23g mol-1 | |
| 43. |
Explain the concept of orbital. |
| Answer» Explain the concept of orbital. | |
| 44. |
CH3MgI will give methane with |
|
Answer» CH3MgI will give methane with |
|
| 45. |
Is it necessary that the electrons in the orbitals always have different spin quantum number? |
| Answer» Is it necessary that the electrons in the orbitals always have different spin quantum number? | |
| 46. |
A first-order reaction is 40% complete after 8 min. How long will it take for the reaction to be 90% complete?ln53=0.511ln10=2.303 |
|
Answer» A first-order reaction is 40% complete after 8 min. How long will it take for the reaction to be 90% complete? |
|
| 47. |
An element E has 2 isotopes E1 and E2 with atomic masses 18u and 16u respectively. If relative abundances of E1 and E2 are in a ratio 9:1, then what is average atomic mass of E? |
| Answer» An element E has 2 isotopes E1 and E2 with atomic masses 18u and 16u respectively. If relative abundances of E1 and E2 are in a ratio 9:1, then what is average atomic mass of E? | |
| 48. |
The Ksp of Ag2CrO4 is 1.1 × 10−12 at 298K. The solubility (in mol/L) of Ag2CrO4 in a 0.1 M AgNO3 solution is |
|
Answer» The Ksp of Ag2CrO4 is 1.1 × 10−12 at 298K. The solubility (in mol/L) of Ag2CrO4 in a 0.1 M AgNO3 solution is |
|
| 49. |
The major product of this reaction is: |
Answer» ![]() The major product of this reaction is: |
|
| 50. |
In conc.HNO3 aluminium becomes passive due to the formation of a layer of |
|
Answer» In conc.HNO3 aluminium becomes passive due to the formation of a layer of |
|