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 basicity of phosphorus acid `(H_(3)PO_(3))` is ............ .A. oneB. twoC. fourD. three |
| Answer» Correct Answer - B | |
| 2. |
The rate of reaction for certain reaction is expressed as : `1/3 (d[A])/(dt)=-(1)/(2)(d[B])/(dt)=-(d[C])/(dt)` The reaction isA. `3A rarr 2B+C`B. `2Brarr 3A+C`C. `2B+Crarr3A`D. `3A+2BrarrC` |
| Answer» Correct Answer - A::B::C | |
| 3. |
The action of sodium on alkyl halide to form an alkane is calledA. Grignard reactionB. Wurtz coupling reactionC. isocyanide reactionD. halogenation reaction |
| Answer» Correct Answer - A::B::C | |
| 4. |
`[Fe(CN)_(6)]^(4-)` isA. inner complexB. outer complexC. square planarD. trigonal bipyramidal |
| Answer» Correct Answer - A::C | |
| 5. |
The order of reactivity in nucleophilic substitution reaction isA. `CH_(3)F lt CH_(3)Cl lt CH_(3)I lt CH_(3)Br`B. `CH_(3)F lt CH_(3)Cl lt CH_(3)Br lt CH_(3)I`C. `CH_(3)F lt CH_(3)Br lt CH_(3)Cl lt CH_(3)I`D. `CH_(3)I lt CH_(3)Br lt CH_(3)Cl lt CH_(3)F` |
| Answer» Correct Answer - B::C | |
| 6. |
An ionic crystal lattice has `r+//r-` radius ratio of `0.524`, its coordination number isA. 2B. 4C. 6D. 8 |
| Answer» Correct Answer - C | |
| 7. |
For the reaction : `Cl_(2(g))rarr2Cl_((g))`A. `Delta H` is positive, `Delta S` is positiveB. `Delta H` is positive, `DeltaS` is negativeC. `DeltaH` is negative, `DeltaS` is negativeD. `DeltaH` is negative, `DeltaS` is positive |
| Answer» Correct Answer - A::D | |
| 8. |
The oxidation number of Fe in `K_(4)[Fe(CN))(6)]` isA. 1B. 2C. 4D. 3 |
| Answer» Correct Answer - B | |
| 9. |
Which of the following carbocations is least stable ?A. `CH_(3)-CH_(2)-underset(CH_(2)-CH_(3))underset(|)overset(CH_(2)-CH_(3))overset(|)(C^(o+))`B. `CH_(3)-CH_(2)-overset(o+)(CH)-CH_(2)-CH_(3)`C. `CH_(3)-CH_(2)-overset(o+)(CH_(2))`D. `CH_(3)-CH_(2)-.^(o+)CH-underset(CH_(3))underset(|)overset(H)overset(|)C-CH_(3)` |
| Answer» Correct Answer - B::C | |
| 10. |
Which of the following compounds in NOT prepared by the action of alcoholic `NH_(3)` on alkyl halide ?A. `CH_( 3)NH_(2)`B. `CH_(3)-CH_(2)-NH_(2)`C. `CH_(3)-CH_(2)-CH_(2)-NH_(2)`D. `(CH_(3))_(3)CNH_(2)` |
| Answer» Correct Answer - B::C::D | |
| 11. |
Consider the reaction `2NO_((g))+O_(2(g))rarr2NO_(2(g))`. If `(d[NO_(2)])/(dt)=0.052` M/s then, `-(d[O_(2)])/(dt)` will beA. 0.052 M/sB. 0.114 M/sC. 0.026 M/sD. `-0.026 M//s` |
| Answer» Correct Answer - B::C | |
| 12. |
The oxidation state of Fe in brown complex `[Fe(H_(2)O)_(5)NO]SO_(4)` isA. `+1`B. `+2`C. `+4`D. `+3` |
| Answer» Correct Answer - C::D | |
| 13. |
In a complex, `[Co(NH_(3))_(3)Cl_(3)]`,A. C.N. is 6 and oxidation state is +3B. Oxidation number +6 and C.N. is 3C. C.N. is 6 and oxidation state is zeroD. Coordination number and oxidation number are 3 and +3 respectively |
| Answer» Correct Answer - A::C::D | |
| 14. |
Tetrahedral geometry of a coordination compound involves the following hybridisation.A. `sp^(3)`B. `dsp^(2)`C. `dsp^(3)`D. `d^(2)sp^(3)` |
| Answer» Correct Answer - A::C | |
| 15. |
But-1-ene on reaction with HCl in the presence of sodium peroxide yieldsA. n-butyl chlorideB. isobutyl chlorideC. secondary butyl chlorideD. tertiary butyl chloride |
| Answer» Correct Answer - A::B::C::D | |
| 16. |
The name of `[CoCl_(2)(NO_(2))_(2)(NH_(3))_(2)]OH` isA. Diamminechloronitritocobalt (III) hydroxideB. Amminechloronitro cobalt(III) hydroxideC. Diamminedichloridodinitrito-Ncobalt(III) hydroxideD. Cobalt(III) dichlorodiamminedinitro hydroxide |
| Answer» Correct Answer - A::B::C::D | |
| 17. |
IUPAC name of the following compound is A. 3-Bromo-3, 4-dimethylheptaneB. 3,4-dimethyl-3-bromoheptaneC. 5-Bromo-4,5dimethylheptaneD. `"-4,5-dimethyl-5-bromoheptane"` |
| Answer» Correct Answer - A::B::C::D | |
| 18. |
Write IUPAC name of product expected from reaction of sodium methoxide and iosbutyl bromide.A. 2-MethoxybutaneB. 2-Methoxy pentaneC. 2-Methoxy propaneD. 2-Methoxy hexane |
| Answer» Correct Answer - A::B | |
| 19. |
The IUPAC name of `(CH_(3))_(2)C(OH)CH_(2)COCH_(3)` isA. 4-Hydroxy-4-methylpentan-2-oneB. 2-Hydroxy-2-methylpentan-4-oneC. Diacetone alcoholD. 4-Hydroxy-4-methyl-2-oxopentane |
| Answer» Correct Answer - A::B::D | |
| 20. |
The C-O-C bond angle in dimethyl ether isA. `110^(@)`B. `112^(@)`C. `111.7^(@)`D. `110.2^(@)` |
| Answer» Correct Answer - A::C | |
| 21. |
Benzyl phenyl ether reacts with hydrogen bromide to giveA. benzyl bromide and phenolB. benzyl alcohol and bromobenzeneC. benzyl bromide and bromobenzeneD. benzyl alcohol and phenol |
| Answer» Correct Answer - A::B::D | |
| 22. |
The IUPAC name of `C_(2)H_(5)-O-CH_(2)-CH(CH_(3))_(2)` isA. 1-Ethoxy-1-butaneB. 2-Ethoxy-2-butaneC. 1-Ethoxy-2-methylpropaneD. 3-Ethoxy-2-methylpropane |
| Answer» Correct Answer - A::B::C | |
| 23. |
The compound B isA. B. C. D. |
| Answer» Correct Answer - A::B::C | |
| 24. |
Which of the following compounds gives 3-Ethylpentan-3-ol by the action of ethyl magnesium iodide followed by acid hydrolysis ?A. PropanoneB. ButanoneC. Pentan-2-oneD. Pentan-3-one |
| Answer» Correct Answer - A::C::D | |
| 25. |
Which one of the following alcohols will give ethyl methyl ketone on oxidation ?A. Butan-1-olB. Butan-2-olC. 2-Methylpropan-2-olD. Propan-1-ol |
| Answer» Correct Answer - A::B | |
| 26. |
When KOH solution is added to potassium dichromate solution,the colour of solution changes to yellow because :A. chromate ion changes to dichromate ionB. dichromate ion changes to chromate ionC. oxidation number of chromium changes from +6 to +4D. oxidation number of chromium changes from +4 to +6 |
| Answer» Correct Answer - A::B::C::D | |
| 27. |
3-Methyl butane-2-ol on heating with HI givesA. 2-iodo-3-methylbutaneB. 2-iodo-2-methylbutaneC. 1-iodo-3-methylbutaneD. 1-iodo-2-methylbutane |
| Answer» Correct Answer - A::B::D | |
| 28. |
Which of the following will not give yellow precipitate when treated with NaOH and `I_(2)` ?A. 3-Methylbutan-2-oneB. 2-Methylpentan-3-oneC. PropanoneD. Hexan-2-one |
| Answer» Correct Answer - A::B::C | |
| 29. |
Consider the cell, Pt`|H_(2(g))|H_((aq))^(+)"||"I_((aq))^(-)|I_(2(s))`. If the standard cell potential is 0.54 V then the standard potential for cathode half reaction will beA. 0 VB. `0.54` VC. `+0.54` VD. `1.08`V |
| Answer» Correct Answer - C::D | |
| 30. |
The reaction between `H_(2(g))` and `Icl_((g))` occurns in the following steps : (i) `H_(2)+ICl rarr HI+HCl` (ii) `HI+ICl rarr I_(2)+HCl` The reaction intermediate in the reaction isA. HClB. HIC. `I_(2)`D. `I Cl` |
| Answer» Correct Answer - B | |
| 31. |
Which of the following is a common antacid ?A. NaOHB. KOHC. `Mg(OH)_(2)`D. HCl |
| Answer» Correct Answer - B::C | |
| 32. |
Which of the following is a bactericidal antibiotic ?A. ErythromycinB. OfloxacinC. TetracyclineD. Chloramphenicol |
| Answer» Correct Answer - A::B::C | |
| 33. |
Which of the following is not an extensive property ?A. MolarityB. Molar heat capacityC. MassD. Volume |
| Answer» Correct Answer - A::B::C | |
| 34. |
In osmosisA. solvent molecules pass from high concentration of solute to low concentrationB. solvent molecules pass from a solution of low concentration of solute to a solution of high concentration of soluteC. solute molecules pass from low concentration to high concentrationD. solute molecules pass from high concentration to low concentration |
| Answer» Correct Answer - A::B::C | |
| 35. |
A gas expands in volume from 2L to 5L against a pressure of 1 atm at constant temperature. The work done by the gas will beA. 3 JB. `-303.9` JC. `-303.9L*` atmD. `303.9 L*`atm |
| Answer» Correct Answer - B::C | |
| 36. |
Which of the following pairs is an extensive property ?A. Mass, temperatureB. Enthalpy, surface tensionC. Viscocity, workD. Volume, entropy |
| Answer» Correct Answer - D | |
| 37. |
In which of the following pairs both are nucleophiles ?A. `BF_(3),AlCl_(3)`B. `NO_(2)^(+),Cl^(-)`C. `CN^(-),NH_(3)`D. `Br^(+),BCl_(3)` |
| Answer» Correct Answer - B::C | |
| 38. |
The relationship between `DeltaG^(@)` of a reaction and its equilibrium constant isA. `-Delta G^(@)=(RT)/(lnK)`B. `DeltaG^(@)=(RT)/(lnK)`C. `(RTlnK)/(DeltaG^(@))=-1`D. `DeltaG^(@)=RTlnK` |
| Answer» Correct Answer - A::C::D | |
| 39. |
For which of the following reactions `DeltaS` is negative ?A. `Mg_((s)) + Cl_(2(g)) rarr MgCl_(2(s))`B. `H_(2)O_((I)) rarr H_(2)O_((g))`C. `CaCO_(3(s)) rarr CaO_((s)) + CO_(2(g))`D. `I_(2(g)) rarr 2I_((g))` |
| Answer» Correct Answer - A::B::C | |
| 40. |
Zone refining is a method to obtainA. Very high temperatureB. Ultra pure AlC. Ultrapure germaniumD. Ultra pure oxides |
| Answer» Correct Answer - A::C | |
| 41. |
Silica is used asA. an acidic fluxB. a basic fluxC. a reducing agentD. an oxidising agent |
| Answer» Correct Answer - A::C::D | |
| 42. |
A process of heating the ore in absence of air is calledA. roastingB. leachingC. liquationD. calcination |
| Answer» Correct Answer - A::C::D | |
| 43. |
The strongest acid among the following isA. B. C. D. |
| Answer» Correct Answer - A::B::C | |
| 44. |
What is the chemical composition of malachite ?A. `CuO*CuCO_(3)`B. `Cu(OH)_(2).CuCO_(3)`C. `CuO*Cu(OH)_(2)`D. `Cu_(2)O.Cu(OH)_(2)` |
| Answer» Correct Answer - B::C | |
| 45. |
Gangue isA. impure metalB. impure oreC. impurity in an oreD. pure metal |
| Answer» Correct Answer - A::C | |
| 46. |
A catalyst increases the rate of the reaction byA. increasing `E_(a)`B. increasing TC. decreasing `E_(a)`D. decreasing T |
| Answer» Correct Answer - A::C::D | |
| 47. |
Flux is added toA. obtain pure metalB. obtain metal from oreC. purify impure metalD. remove impurities from ores |
| Answer» Correct Answer - D | |
| 48. |
Antimony behaves as a non-metal inA. conc. HClB. conc. `HNO_(3)`C. conc. `H_(2)SO_(4)`D. dilute `H_(2)SO_(4)` |
| Answer» Correct Answer - B::C | |
| 49. |
`PCl_(5)` exists but `NCl_(5)` does not due toA. inertness of `N_(2)`B. `NCl_(5)` is unstableC. larger size of ND. non-availability of vacant d-orbitals |
| Answer» Correct Answer - A::B::C::D | |
| 50. |
Which of the following terms is independent of temperature ?A. NormalityB. MolarityC. MolalityD. Formality |
| Answer» Correct Answer - A::C | |