InterviewSolution
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InterviewSolution
This section includes InterviewSolutions, each offering curated multiple-choice questions to sharpen your knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
The IUPAC name of the compound, `underset(OH)underset(|)(C)H_(2)-underset(NH_(2))underset(|)(C)H-COOH` isA. 2-amino-3-hydroxypropanoic acidB. 1-hydroxy-2-aminopropan-3-oic acidC. 1-amino-2-hydroxypropanoic acidD. 3-hydroxy-2-aminopropanoic acid. |
| Answer» Correct Answer - A | |
| 2. |
A plot of volume (V) versus temperature (T) for a gas at constannt pressure is a straight line passing through the origin. The plots at different values of pressure are shown in figure. Which of the following order of pressure is correct for this gas? A. `p_(1) gt p_(2)gtp_(3)gtp_(4)`B. `p_(1)=p_(2)=p_(3)=p_(4)`C. `p_(p) lt p_(2) lt p_(3) lt p_(4)`D. `p_(1) lt p_(2)= p_(3) lt p_(4)` |
| Answer» Correct Answer - C | |
| 3. |
Calculate the uncertainty in the momentum of an electron if it is confined to a linear region of length `1xx10^(-10)`metreA. `5.37xx10^(-27)" kg "ms^(-1)`B. `5.27xx10^(-27)" g "ms^(-1)`C. `5.37xx10^(-25)" g "ms^(-1)`D. `5.27xx10^(-25)" kg "ms^(-1)` |
| Answer» Correct Answer - D | |
| 4. |
Which is correct about saccharin ?A. B. It is 600 times sweeter than sugar.C. It is used as sweetening agent.D. All of these |
| Answer» Correct Answer - D | |
| 5. |
Among the electrolytes ` Na_(2)SO_(4) , CaCI_(2), AI_(2)(SO_(4))_(3) and NH_(4)CI` the most effctive oagulating agent for `Sb_(2)S_(3)` sol isA. `Na_(2)SO_(4)`B. `CaCI_(2)`C. `AI_(2)(SO_(4))_(3)`D. `NH_(4)CI` |
| Answer» Correct Answer - C | |
| 6. |
Capilary action of the liquid ca be explained on the basis of itsA. resistance to flowB. surface tensionC. heat of vaporisationD. refractive index |
| Answer» Correct Answer - B | |
| 7. |
Smoke is an example ofA. gas dispersed in liquidB. gas dispersed in solidC. solid dispersed in gasD. solid dispersed in solid |
| Answer» Correct Answer - C | |
| 8. |
The ratio of specific charge of a proton and an `alpha`-particle isA. `2:1`B. `1:2`C. `1:4`D. `1:1` |
| Answer» Correct Answer - B | |
| 9. |
The first emission line in the atomic spectrum of hydrogen in the Balmer series appears at`A. `9R//400cm^(-1)`B. `7R//144cm^(-1)`C. `3R//4cm^(-1)`D. `5R//36cm^(-1)` |
| Answer» Correct Answer - D | |
| 10. |
Select the correct statement. In the gas equation, `PV=nRT`A. n is the number of molecules of a gasB. n moles of the gas have a volume VC. V denotes volume of one mole of the gasD. P is the pressure of the gas when only one mole of gas is present. |
| Answer» Correct Answer - B | |
| 11. |
Element `M+N_(2) overset(Delta)to overset(H_(2)O)toNH_(3)` element M belonging to group 13 can beA. B or AlB. Ga or AlC. B or GaD. In or Tl |
| Answer» Correct Answer - A | |
| 12. |
Which of the following is correct?A. van der waals radius of chlorine is bigger than nitrogen.B. covalent radius of nitrogen is bigger than chlorineC. van der waals radius of chlorine is smaller than nitrogenD. All are correct |
| Answer» Correct Answer - A | |
| 13. |
The compressibility of a gas is less than unity at STP. Therefore,A. `V_(m) gt 22.4L`B. `V_(m) lt 22.4L`C. `V_(m)=22.4L`D. `V_(m)=44.8L` |
| Answer» Correct Answer - B | |
| 14. |
Which of the following statements is not correct?A. the shape of an atomic orbital depends on the azimuthal quantum number.B. the orientation of an atomic orbital depends on the magnetic quantum number.C. The energy of an electron in an atomic orbital of multi-electron atom depends on principal quantum number.D. The number of degenerate atomic orbitals of one type depends on the values of azimuthal and magnetic quantum numbers. |
| Answer» Correct Answer - C | |
| 15. |
In covalent bondA. transfer of electrons takes placeB. sharing of electrons takes placeC. electrons are shared by only one atomD. none of these |
| Answer» Correct Answer - B | |
| 16. |
Which one of the following pairs do not impart colour to the flame?A. `BeCl_(2) and SrCl_(2)`B. `BeCl_(2) and MgCl_(2)`C. `CaCl_(2) and BaCl_(2)`D. `BaCl_(2) and SrCl_(2)` |
| Answer» Correct Answer - B | |
| 17. |
Which is not correct?A. GeO is acidicB. `GeCl_(2)` is more stabhle than `GeCl_(4)`C. `GeO_(2)` is acidic.D. `GeCl_(4)` in HCl forms `[GeCl_(6)]^(2-)` ion. |
| Answer» Correct Answer - B | |
| 18. |
Which of the following is a monomer of natural rubber ?A. ChloropreneB. CaproplactamC. UreaD. none of these. |
| Answer» Correct Answer - D | |
| 19. |
Acetic acid is obtained whenA. Methyl alcohol is oxidised with potassium permanganateB. Calcium acetate is distilled in the presence of calcium formateC. acetaldehyde is oxidised with potassium dichromate and sulphuric acidD. glycerol is heated with sulphuric acid. |
| Answer» Correct Answer - C | |
| 20. |
Transition elements exhibit higher enthalpiese of atomization becauseA. of large number of unpaired electronsB. of having stronger interatomic interactionC. of strong bonding between atomsD. All of these |
| Answer» Correct Answer - D | |
| 21. |
The compound which reacts fastest with Lucas reagent at room temperature isA. butan-1-olB. butan -2-olC. 2-methypropan-1-olD. 2-methylpropan -2-ol |
| Answer» Correct Answer - D | |
| 22. |
Which of the following decreases on dilution of electrolyte solution ?A. Equivalent conductanceB. Molar conductanceC. Specific conductanceD. Conductance |
| Answer» Correct Answer - C | |
| 23. |
Non-reducing sugar isA. maltoseB. sucroseC. lactoseD. none of these. |
| Answer» Correct Answer - B | |
| 24. |
Bakelite is obtained from phenol by reaction withA. HCHOB. `(CH_(2)OH)_(2)`C. `CH_(3)CHO`D. `CH_(3)COCH_(3)` |
| Answer» Correct Answer - A | |
| 25. |
The electrode potential is the tendency of metalA. to gain electronsB. to lose electronsC. to either lose or gain electronsD. none of these. |
| Answer» Correct Answer - C | |
| 26. |
Germanium is an example ofA. intrinsidc semiconductorB. n-type semiconductorC. p-type semiconductorD. insulator. |
| Answer» Correct Answer - A | |
| 27. |
An ether is more volatile than alcohol having the same molecular formula. This is due toA. intermolecular hydrogen bonding in ethersB. dipolar character of ethersC. alcohols having resonance structuresD. intermolecular hydrogen bonding in alcohols. |
| Answer» Correct Answer - D | |
| 28. |
Which of the following synthesis gives 3-methyl -1- hexanol ?A. 2- Bromohexance ` overset("Mg") underset("dry ether")to overset("(i) HCHO") underset("(ii)" H_(3)O^(+)) to `B. C. 3- Bromopentane `overset("Mg") underset("dry ether ") to overset("(i) CH_(3)CHO) underset((ii) H_(3)O^(+)) to`D. 1- Bromobutane ` overset("Mg") underset("dry ether") to overset((i) CH_(3)COCH_(3)) underset((ii) H_(3)O^(+))to` |
| Answer» Correct Answer - B | |
| 29. |
The second ionization enthalpy isA. smaller than the first ionization enthalpyB. salmost equal to the first ionizationn enthalpyC. smallerr than the third ionization enthalpyD. equal to the second electron gain enthalpy. |
| Answer» Correct Answer - C | |
| 30. |
Which one of the following on oxidation gives a ketone ?A. Primary alcoholB. Secondary alcoholC. Tertiary alcoholD. All of these |
| Answer» Correct Answer - B | |
| 31. |
IUPAC name of 4-iso-propyl-m-xylene isA. 1-iso-propyl-2,4-dimethylbenzeneB. 4-iso-propyl-m-xyleneC. 4-iso-propyl-2,3-dimethylbenzeneD. 4-iso-propyl-3,5-dimethylbenzene. |
| Answer» Correct Answer - A | |
| 32. |
The electrode potential of oxidation half cellA. is independent of the concentration of ions in the cellB. decrease with deccreased concentration of ions is the cellC. decreases with increased concentration of ions in the cellD. none of these. |
| Answer» Correct Answer - B | |
| 33. |
Which of the following is correct for `SF_(4)`?A. It has a see-saw shapeB. It has two lone pairs of electronsC. It has a square planar geometryD. It has five bonding pairs. |
| Answer» Correct Answer - A | |
| 34. |
Oxidation number of bromine in sequence in `Br_(3)O_(8)` is A. `+8,+6,+8`B. `+6,+4,+6`C. 0,0,0D. `+8,+4,+8` |
| Answer» Correct Answer - B | |
| 35. |
`aK_(2)Cr_(2)O_(7)+bKCl+cH_(2)SO_(4) to xCrO_(2)Cl_(2)+yKHSO_(4)+zH_(2)O` The above equation balances whenA. a=2,b=4,c=6 and x=2, y=6, z=3B. a=4,b=2,c=6 and x=6,y=2,z=3C. a=6,b=4,c=2 ad x=6, y=3,z=2D. a=1,bb=4,c=6 and x=2, y=6, z=3 |
| Answer» Correct Answer - D | |
| 36. |
Which of the following alkenes on ozonolysis gives a mixture of ketones only?A. `CH_(3)-CH=CH-CH_(3)`B. `CH_(3)-underset(CH_(3))underset(|)(C)-CH=CH_(2)`C. D. `H_(2)C=CH_(2)` |
| Answer» Correct Answer - C | |
| 37. |
m-Chlorobenzaldehyde on reaction with conc. KOH at room temperature gives:A. Potassium m- chlorobenzoate and m-hydroxybenzaldehydeB. m-hydroxybenzaladehyde and m-chlorobenzyl alcoholC. m -chlorobenzyl alcohol and m-hydroxybenzylalcoholD. Potassium m-chlorobenzote and m-chlorobenzyl alcohol. |
| Answer» Correct Answer - D | |
| 38. |
All reactions involving chemical decomposition areA. reversibleB. reversible and endothermicC. exothermicD. may be reversible or irreversible and endothermic or exothermic |
| Answer» Correct Answer - D | |
| 39. |
Match the column I with column II and mark the appropriate choice A. `Atoi,Btoii,Ctoiii,Dtoiv`B. `Atoii,Btoi,Ctoiv,Dtoiii`C. `Atoii,Btoiii,Ctoi,Dtoiv`D. `Atoiii,Btoii,Ctoi,Dtoiv` |
| Answer» Correct Answer - B | |
| 40. |
In the following question, a statement of assertion is followed by a statement of reason. Mark the correct choice. Assertion: Simple distillation can help in separating a mixture of propan-1-ol (boiling point `97^(@)C`) and propanone (boiling point `56^(@)C`) Reason: Liquids with a difference of more than `20^(@)C` in their boiling points can be separated by simple distillation.A. both assertion and reason are true and reason is the correct explanationn of assertionB. both assertionn and reason are true but reason is not the correct explanation of assertionC. Assertionis true but reason is false.D. both assertion and reason are false. |
| Answer» Correct Answer - A | |
| 41. |
The amont of water produced by the combustion of 16 g of methane isA. 16 gB. 36 gC. 18 gD. 32 g |
| Answer» Correct Answer - B | |
| 42. |
The order of heat of fusion of `T_(2),D_(2) and H_(2)` isA. `T_(2) gt D_(2) gt H_(2)`B. `H_(2) gt T_(2) gt D_(2)`C. `D_(2) gt T_(2) gt H_(2)`D. `D_(2)=T_(2)gtH_(2)` |
| Answer» Correct Answer - A | |
| 43. |
The central C-atom of a carbanion possessesA. sectet of electronsB. octet of electronsC. duplet of electronsD. none of these |
| Answer» Correct Answer - B | |
| 44. |
Which of the following is wrong?A. Cathode rays have constant e/m ratio.B. e/m ratio of anode rays is not constant.C. e/m ratio of protons is not constantD. e/m ratio of `beta`-particles is constant. |
| Answer» Correct Answer - C | |
| 45. |
Which of the following statements is correct?A. `E_(cell)^(@) and Delta_(r) G` of cell reaction both are extensive propertiesB. `E_(cell)^(@) and Delta_(r)G` of cell reaction both are intensive propertiesC. `E_(cell)^(@)` is an intensive properrty while `Delta_(r) G` of cell reaction is an extensive property.D. `E_(cell)^(@)` is an extensive property while `Delta_(r)G` of cell reaction is an intensive property. |
| Answer» Correct Answer - C | |
| 46. |
For the reaction at `25^(@)C,X_(2)O_(4(l))to2XO_(2(g)),DeltaH=2.1kcal and DeltaS=20" cal "K^(-1)`. The reaction would beA. spontaneousB. non-spontaneousC. at equilibriumD. unpredictable |
| Answer» Correct Answer - A | |
| 47. |
The strongest bond is present inA. `Br_(2)`B. `I_(2)`C. `Cl_(2)`D. `F_(2)` |
| Answer» Correct Answer - C | |
| 48. |
In hcp arrangement the coordination number isA. 6B. 12C. 8D. 10 |
| Answer» Correct Answer - B | |
| 49. |
Which of the following statements is not ture ?A. Paramagnetic substances are weakly attracted by a magnetic field.B. Ferromagnetic substances cannot be magnetised permanently .C. The domains in antiferromagnetic substance are oppositely oriented with respect to each other.D. Pairing of electrons cancels their magnetic moments in the diamagnetic substances. |
| Answer» Correct Answer - B | |
| 50. |
Which of halogen acids indicated below is incorrect ?A. HF gt HCI gt HBr gt HI ( acidic strength )B. HI gt HBr gt HCI gt HF ( reducing strength )C. HI gt HBr gt HCI gt HF (bond length)D. HF gt HCI gt HBr gt HI (thermal stability ) |
| Answer» Correct Answer - A | |