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.
| 51. |
The alcohol used in thermometers is :(a) methanol (b) ethanol (c) propanol (d) butanol |
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Answer» Option : (b) ethanol |
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| 52. |
Which of the following compounds is oxidised to prepare methyl ethyl ketone?A. Propan-2-olB. Butan-2-olC. Butan-1-olD. Tertiary butyl alcohol |
| Answer» Correct Answer - B | |
| 53. |
Anisole on treatment with `Br_(2)//CS_(2)` gives `:`A. bromobenzeneB. methyl-2-bromophenyl etherC. o- and p- bromoanisoleD. phenol |
| Answer» Correct Answer - C | |
| 54. |
What is the product (A) in the following reaction ? A. Pentan-1-olB. 2-Methylbutan-1-olC. 2-Methylbutan-2-olD. 3-Methylbutan-1-ol |
| Answer» Correct Answer - A | |
| 55. |
Propene on reaction with carbon monoxide and hydrogen at hight temperature under pressure in presence of cobalt carbonyl catalyst gives `:`A. butan-1-olB. 2-methylpropan-1-olC. 2-methylpropan-2-olD. a mixture of butan1-1ol and 2-methylpropan-1-ol |
| Answer» Correct Answer - D | |
| 56. |
Which of the following combination can be used to synthesise ethanol?A. `CH_(3)MGgI and CH_(3)COCH_(3)`B. `CH_(3)MgI and C_(2)H_(5)OH`C. `CH_(3)MgI and CH_(3)COOC_(2)H_(5)`D. `CH_(3)MgI and HCHO` |
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Answer» Correct Answer - D When HCHO reacts with `CH_(3)Mgl`, ethanol is formed. `HCHO+CH_(3)Mgl rarr H-overset(H)overset(|)underset(CH_(3))underset("| ")"C "-overset(-)Ooverset(+)Mgl overset(H_(2)O //H^(+))rarr CH_(3)CH_(2)OH+Mg(OH)Br` |
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| 57. |
The correct statement(s) about the following reaction sequence is (are) Cumene `(C_(9)H_(12))underset((ii)H_(3)O^(+))overset((i)O_(2))rarrPoverset(CHCl_(3)//NaOH)rarr` Q(major)+R(minor), `Q underset(PhCH_(2)Br)overset(NaOH)rarrS`A. R is steam volatileB. Q given dark violet colouration with `1%` aqueous `FeCl_(3)` solutionC. S gives yellow precipitate with 2,4-dinitrophenool hydrazineD. S gives dark violet colouration with `1%` aqueous `FeCl_(3)` solution |
| Answer» Correct Answer - B,C | |
| 58. |
How many isomers of `C_(5)H_(11)OH` will be primary alcohols?A. 5B. 4C. 2D. 3 |
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Answer» Correct Answer - B |
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| 59. |
`R-OH + HX to R -X + H_(2)O` In the above reaction the reactivity of different alcohols isA. Tertiary `gt` secondary `gt` PremaryB. Tertiary `lt` secondary `lt` PremaryC. Tertiary `gt` primary `gt` secondaryD. Secondary `gt` primary `gt` tertiary |
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Answer» Correct Answer - A |
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| 60. |
Which is the most suitable method for removing the traces of water from ethanol ?A. Heating with Na metalB. Passing dry HCl thorugh itC. Distilling it with CaOD. Reacting with Mg |
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Answer» Correct Answer - C |
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| 61. |
Catalytic dehydrogenation of a primary alcohol gives a/anA. secondary alcoholB. aldehydeC. ketoneD. ester |
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Answer» Correct Answer - B Primary alcohols get dehydrogenated with reduced copper at 573 K, to give corresponding aldehydes. `underset("Primary alcohol")(R-CH_(2)OH)overset(Cu, 573K)rarr underset("Aldehyde")(RCHO)+H_(2)` |
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| 62. |
Catalytic oxidation of benzyl alcohol givesA. benzaldehydeB. benzoic acidC. tolueneD. phenol |
| Answer» Correct Answer - A | |
| 63. |
(A) Benzoic acid and phenol can be distinguished by NaOH. (R) Benzoic acid is stronger acid than phenol.A. Both A and R are correct and R is correct explanation of AB. Both A and R are correct but R is not the correct explanation of AC. A is correct but R is in correctD. A is incorrect but R is correct |
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Answer» Correct Answer - D |
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| 64. |
Benzyl alcohol and phenol can be distinguished by usingA. `FeCl_(3)`B. `Na`C. Lucas reagentD. none of these |
| Answer» Correct Answer - A | |
| 65. |
Assertion : Phenol and benzoic acid can be distinguished by `NaHCO_(3)`. Reason : Benzoic acid is a stronger acid than phenol.A. If both (A) and (R ) are correct and (R ) is correct explanation of (A ).B. If both (A ) and (R ) are correct but (R ) is not correct explanation of (A ).C. If (A) is correct but (R ) is incorrectD. If (A) is incorrect but (R ) is correct. |
| Answer» Correct Answer - D | |
| 66. |
Sodium iso-propoxide + A `oversetDeltato` 2-ethoxy propene + NaCl The compound A isA. `C_2H_5ONa`B. `C_2H_5COCl`C. `C_2H_5Cl`D. `CH_3ONa` |
| Answer» Correct Answer - C | |
| 67. |
2-ethoxy propane is effectively prepared fromA. isobutyl iodineB. isopropyl iodineC. ethyl iodineD. n-propyl iodine |
| Answer» Correct Answer - C | |
| 68. |
Which of the following statements is false in case of ethoxy ethane ?A. It is inflammableB. It is simple etherC. It react with Na metalD. It is used as anaesthetic |
| Answer» Correct Answer - C | |
| 69. |
Phenol on heating with NaOH followed by reaction with alky1 halide givesA. phenetoleB. pheneyl acetateC. anisoleD. toluene |
| Answer» Correct Answer - C | |
| 70. |
Primary alcohol can easily be prepared from primary alky `1` halide `via S_(N)2`reaction with aqueous `NaOH`. However, similar method does not work for the perparation tertiary acholo (tertiary butanol) from tertiary buty`1` bromide except?A. `(CH_(3))_(3)CBr+CH_(3)COOAg(aq)rarroverset(H_(3)O^(+))to`B. `(CH_(3))_(3)CBr+KOHoverset(C_(2)H_(5)OH)rarrunderset(Heat)overset(H_(2)SO_(4))rarr`C. `(CH_(3))_(3)CBr underset((C_(2)H_(5))_(2)O)overset(Mg)rarr underset((iii)H_(3)O^(+))overset((i)O^(2))rarr`D. `(CH_(3))_(3)CBr overset(KOH//Ethanol)rarr underset((ii)H_(2)O_(2)//NaOH)overset((i)B_(2)H_(6))rarr` |
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Answer» Correct Answer - A `3^(@)R^(X)`undergoes elimination with base. `(CH_(3))_(3)CBr+CH_(3)COOAg(aq)rarr` `CH_(3)-overset(O)overset(||)C-underset((Ester))O-C(CH_(3))_(3)overset(H_(3)O^(+))rarr` `CH_(3)-underset(CH_(3))underset(|)overset(CH_(3))overset(|)C-OH-CH_(3)COOH` |
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| 71. |
Which of the following ether produces methyl alcohol when reacts with cold HBrA. 2-Methyl 2-methoxy propaneB. 2-methoxy propaneC. 1-methoxy propaneD. methoxy ethane |
| Answer» Correct Answer - A | |
| 72. |
When ethyl alcohol is reacted with sodium metal and the compound so formed is treated with ethyl bromide, the product formed is :(a) an acid (b) an alkane (c) an ether (d) an ester |
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Answer» Option : (c) an ether |
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| 73. |
Ether molecules are : (a) tetrahedral (b) angular (c) pyramidal (d) diagonal |
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Answer» Option : (b) angular |
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| 74. |
Which one of the following compounds is not isomeric with Ethoxypropane?(a) 1-Methoxypropane (b) 2-Methoxypropane (c) 2-Methylpropane-2-ol (d) 2-Methylbutan-2-ol |
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Answer» Option : (d) 2-Methylbutan-2-ol |
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| 75. |
Which of the following compounds is not isomeric with ethoxyethane?(a) 1-methoxypropane (b) 2-methoxypropane (c) 2-methylpropan-2-ol (d) 2-methylbutan-2-ol |
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Answer» Option : (d) 2-methylbutan-2-ol |
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| 76. |
How many ethers are possible for formula `C_5H_12O`A. 12B. 14C. 6D. 8 |
| Answer» Correct Answer - D | |
| 77. |
Acid catalysed hydration of alkenes except ethene leads to the formation ofA. secondary or tertiary alcoholB. primary alcoholC. mixture of secondary and tertiary of alcoholsD. mixture of primary and secondary alcohols |
| Answer» Correct Answer - A | |
| 78. |
IUPAC name of following compound is A. 1, 3, 5-trimethoxypentaneB. 2, 4, 8 -trioxanonaneC. 1, 31 5 -trimethoxyheptaneD. 1, 3, 5- trimethoxyhexane |
| Answer» Correct Answer - A | |
| 79. |
Alkenes convert into alcohols byA. hydrolysis by dill. `H_2SO_4`B. hydration of alkene by conc. `H_2SO_4`C. hydrolysis by water vapours and conc. `H_2SO_4`D. hydration of alkene by aqueous KOH |
| Answer» Correct Answer - B | |
| 80. |
IUPAC name of the following compound is A. 2-pentoxybenzeneB. phenetolC. 2-phenoxypentaneD. isopentylphenylether |
| Answer» Correct Answer - A | |
| 81. |
`CH_3-CH_2-CH_2-CO-CH_2-CH(CH_3)_2` Catalytic hydrogenation of above compound m the presence of nickel catalyst givesA. an optically inactive compoundB. an optically active compoundC. compound with plane of symmetryD. an tertiary alcohol |
| Answer» Correct Answer - B | |
| 82. |
The IUPAC name of `C_2H_5OCH_2CH(CH_3)_2` is ,A. 3-ethoxy -2-methylpropaneB. 1-ethoxy -2-methylpropaneC. 1-ethoxybutaneD. 2-ethoxybutane |
| Answer» Correct Answer - B | |
| 83. |
A simple method to remove peroxides from ethers is to treat them with an aqueous solution of `:`A. `KI`B. `KCNS`C. `Na_(2)S_(2)O_(3)`D. `Br_(2)` |
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Answer» Correct Answer - A Ether peroxide oxidises KI into `I_(2)` and itself gets reduced to ether. Therefore, KI is added to remove peroxides from ethers. `2I^(-) rarr I_(2)+2e^(-)` `"Ether peroxide "+2e^(-) rarr "Ether "+O_(2)` |
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| 84. |
The IUPAC name of `CH_3OCH(CH_3)_2` is ,A. 2-methoxypropaneB. 2-epoxypropaneC. 2-methoxypropaneD. 1-epoxypropane |
| Answer» Correct Answer - C | |
| 85. |
A simple method to remove peroxides from ethers is to treat them with an aqueous solution of `:`A. KIB. KCNSC. `Na_(2)S_(2)O_(3)`D. `Br_(2)` |
| Answer» Correct Answer - A | |
| 86. |
Ethers have angular V-shaped geometry likeA. `NH_3`B. `H_2O`C. `CH_4`D. `CH_3^+` |
| Answer» Correct Answer - B | |
| 87. |
Which of the following compound shows metamerism ?A. `CH_3OCH_3`B. `CH_3OC_3H_7`C. `CH_3OC_2H_5`D. `CH_3COC_2H_5` |
| Answer» Correct Answer - B | |
| 88. |
Which of the following compound shows metamerism ?A. `CH_3-O-CH_3`B. `CH_3-CO-CH_3`C. `CH_3NHCH_3`D. `CH_3-O-C_3H_7` |
| Answer» Correct Answer - D | |
| 89. |
Geometry of ether isA. linearB. pyramidalC. trigonal planarD. octahedral |
| Answer» Correct Answer - B | |
| 90. |
Which of the following compound does not show metamerism?A. `CH_3-O-CH_3`B. `CH_3-O-C_4H_9`C. `CH_3-O-C_3H_7`D. `CH_3-O-C_5H_11` |
| Answer» Correct Answer - A | |
| 91. |
Metamerism is possible inA. same polyvalent functional groupB. same monovalent functional groupC. different polyvalent functional groupD. different monovalent functional group |
| Answer» Correct Answer - A | |
| 92. |
Metamerism is advance type ofA. optical isomerismB. geometrical isomerismC. chain and position isomerismD. only chain isomerism |
| Answer» Correct Answer - C | |
| 93. |
Assertion(A): Ethyl alcohol is soluble in organic solvents Reason (R): Ethyl alcohol is having non polar ethyl groupA. Both A and R are true and R is the correct explanation to AB. Both A and R are true and R is not the correct explanation to AC. A is true but R is falseD. A is false but R is true |
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Answer» Correct Answer - A |
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| 94. |
95% ethyl alcohol can be converted to 100 % ethyl alcohol by the followingA. Magnesium chlorideB. Calcium oxideC. Magnesium phosphateD. Magnesium sulphate |
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Answer» Correct Answer - B |
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| 95. |
`I_(2)` produced when ozone reacts with moist KI is used to convert `C_(2)H_(5)OH` to `CI_(3)CHO`. Number of moles of ozone required to convert 1 mole of `C_(2)H_(5)OH` into `CI_(3)CHO` isA. 1B. 2C. 4D. 3 |
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Answer» Correct Answer - C |
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| 96. |
State the combustion products of diethyl ether. |
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Answer» The combustion products of diethyl ether are CO2 and H2O. |
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| 97. |
Which of the following is explosive?A. B. C. D. None of these |
| Answer» Correct Answer - B | |
| 98. |
The explosive nitrolglycerine is `:`A. an esterB. a saltC. a soapD. a complex compound. |
| Answer» Correct Answer - A | |
| 99. |
The factor adversely affecting the fermentation process is `:`A. presence of airB. low concentration of sugarsC. high concentration of sugarsD. presence of enzyme |
| Answer» Correct Answer - C | |
| 100. |
`CH_(3)CH_(2)OHunderset("Step 1")overset(Cl_(2))(rarr)CH_(3)CHOunderset("Step 2")overset(3Cl_(2))(rarr)Cl_(3)C CHO` In the above reaction, the role of `Cl_(2)` in step 1 and step 2 respectively is `:`A. oxidation, chlorinationB. reduction, chlorinationC. oxidation, additionD. reduction, substitution |
| Answer» Correct Answer - A | |