11. ALCOHOLS, PHENOLS AND ETHERS[KARNATAKA CET EXCLUSIVE]
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CHEMISTRY(KCET)

285549 Which is most viscous?

1 Ethylene glycol
2 Glycerol
3 Methanol
4 Ethanol
Karnataka CET 2022
CHEMISTRY(KCET)

285550 A compound '\(A\) ' \(\left(\mathrm{C}_7 \mathrm{H}_8 \mathrm{O}\right)\) is insoluble in \(\mathrm{NaHCO}_3\) solution but dissolves in NaOH and gives a characteristic colour with neutral \(\mathrm{FeCl}_3\) solution. When treated with bromine water compound ' \(A\) ' forms the compound ' \(B\) ' with the formula, \(\mathrm{C}_7 \mathrm{H}_5 \mathrm{OBr}_3\). ' \(A\) ' is

Ans:b
Exp:(b)

Karnataka CET 2021
CHEMISTRY(KCET)

285551 \(\mathrm{CH}_3 \mathrm{CHO} \xrightarrow[\text { (ii) } \mathrm{H}_3 \mathrm{O}^{+}]{\text {(i) } \mathrm{CH}_3 \mathrm{MgBr}} A \xrightarrow[\Delta]{\text { Conc. } \mathrm{H}_2 \mathrm{SO}_4} B\)
\(\xrightarrow[\text { (ii) } \mathrm{H}_2 \mathrm{O}_2 \mathrm{OH}^{-}]{ } C\)
\(A\) and \(C\) are

1 identical
2 position isomers
3 functional isomers
4 optical isomers.
Karnataka CET 2021
CHEMISTRY(KCET)

285552 The steps involved in the conversion of propan-2-ol to propan-1-ol are in the order

1 heating with \(\mathrm{PCl}_5\), heating with alc. KOH , acid catalysed addition of water
2 heating with \(\mathrm{PCl}_5\), heating with alc. KOH , hydroboration oxidation
3 dehyration, addition of HBr in presence of peroxide, heating with alc. KOH
4 dehydration, addition of HBr , heating with aq. KOH
Karnataka CET 2020
CHEMISTRY(KCET)

285553 Which of the following on heating gives an ether as major product?

P: \(\mathrm{C}_6 \mathrm{H}_5 \mathrm{CH}_2 \mathrm{Br}+\mathrm{CH}_3 \mathrm{ONa}\)
Q: \(\mathrm{C}_6 \mathrm{H}_5 \mathrm{ONa}+\mathrm{CH}_3 \mathrm{Br}\)
\(R\) : \(\left(\mathrm{CH}_3\right)_3 \mathrm{C}-\mathrm{Cl}+\mathrm{CH}_3 \mathrm{ONa}\)
S: \(\mathrm{C}_6 \mathrm{H}_5 \mathrm{CH}=\mathrm{CHCl}+\mathrm{CH}_3 \mathrm{ONa}\)

1 Both\(P\) and \(R\)
2 Both\(Q\) and \(S\)
3 Both\(P\) and \(Q\)
4 Both\(R\) and \(S\)
Karnataka CET 2020
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CHEMISTRY(KCET)

285549 Which is most viscous?

1 Ethylene glycol
2 Glycerol
3 Methanol
4 Ethanol
Karnataka CET 2022
CHEMISTRY(KCET)

285550 A compound '\(A\) ' \(\left(\mathrm{C}_7 \mathrm{H}_8 \mathrm{O}\right)\) is insoluble in \(\mathrm{NaHCO}_3\) solution but dissolves in NaOH and gives a characteristic colour with neutral \(\mathrm{FeCl}_3\) solution. When treated with bromine water compound ' \(A\) ' forms the compound ' \(B\) ' with the formula, \(\mathrm{C}_7 \mathrm{H}_5 \mathrm{OBr}_3\). ' \(A\) ' is

Ans:b
Exp:(b)

Karnataka CET 2021
CHEMISTRY(KCET)

285551 \(\mathrm{CH}_3 \mathrm{CHO} \xrightarrow[\text { (ii) } \mathrm{H}_3 \mathrm{O}^{+}]{\text {(i) } \mathrm{CH}_3 \mathrm{MgBr}} A \xrightarrow[\Delta]{\text { Conc. } \mathrm{H}_2 \mathrm{SO}_4} B\)
\(\xrightarrow[\text { (ii) } \mathrm{H}_2 \mathrm{O}_2 \mathrm{OH}^{-}]{ } C\)
\(A\) and \(C\) are

1 identical
2 position isomers
3 functional isomers
4 optical isomers.
Karnataka CET 2021
CHEMISTRY(KCET)

285552 The steps involved in the conversion of propan-2-ol to propan-1-ol are in the order

1 heating with \(\mathrm{PCl}_5\), heating with alc. KOH , acid catalysed addition of water
2 heating with \(\mathrm{PCl}_5\), heating with alc. KOH , hydroboration oxidation
3 dehyration, addition of HBr in presence of peroxide, heating with alc. KOH
4 dehydration, addition of HBr , heating with aq. KOH
Karnataka CET 2020
CHEMISTRY(KCET)

285553 Which of the following on heating gives an ether as major product?

P: \(\mathrm{C}_6 \mathrm{H}_5 \mathrm{CH}_2 \mathrm{Br}+\mathrm{CH}_3 \mathrm{ONa}\)
Q: \(\mathrm{C}_6 \mathrm{H}_5 \mathrm{ONa}+\mathrm{CH}_3 \mathrm{Br}\)
\(R\) : \(\left(\mathrm{CH}_3\right)_3 \mathrm{C}-\mathrm{Cl}+\mathrm{CH}_3 \mathrm{ONa}\)
S: \(\mathrm{C}_6 \mathrm{H}_5 \mathrm{CH}=\mathrm{CHCl}+\mathrm{CH}_3 \mathrm{ONa}\)

1 Both\(P\) and \(R\)
2 Both\(Q\) and \(S\)
3 Both\(P\) and \(Q\)
4 Both\(R\) and \(S\)
Karnataka CET 2020
For More Updates join with Us
CHEMISTRY(KCET)

285549 Which is most viscous?

1 Ethylene glycol
2 Glycerol
3 Methanol
4 Ethanol
Karnataka CET 2022
CHEMISTRY(KCET)

285550 A compound '\(A\) ' \(\left(\mathrm{C}_7 \mathrm{H}_8 \mathrm{O}\right)\) is insoluble in \(\mathrm{NaHCO}_3\) solution but dissolves in NaOH and gives a characteristic colour with neutral \(\mathrm{FeCl}_3\) solution. When treated with bromine water compound ' \(A\) ' forms the compound ' \(B\) ' with the formula, \(\mathrm{C}_7 \mathrm{H}_5 \mathrm{OBr}_3\). ' \(A\) ' is

Ans:b
Exp:(b)

Karnataka CET 2021
CHEMISTRY(KCET)

285551 \(\mathrm{CH}_3 \mathrm{CHO} \xrightarrow[\text { (ii) } \mathrm{H}_3 \mathrm{O}^{+}]{\text {(i) } \mathrm{CH}_3 \mathrm{MgBr}} A \xrightarrow[\Delta]{\text { Conc. } \mathrm{H}_2 \mathrm{SO}_4} B\)
\(\xrightarrow[\text { (ii) } \mathrm{H}_2 \mathrm{O}_2 \mathrm{OH}^{-}]{ } C\)
\(A\) and \(C\) are

1 identical
2 position isomers
3 functional isomers
4 optical isomers.
Karnataka CET 2021
CHEMISTRY(KCET)

285552 The steps involved in the conversion of propan-2-ol to propan-1-ol are in the order

1 heating with \(\mathrm{PCl}_5\), heating with alc. KOH , acid catalysed addition of water
2 heating with \(\mathrm{PCl}_5\), heating with alc. KOH , hydroboration oxidation
3 dehyration, addition of HBr in presence of peroxide, heating with alc. KOH
4 dehydration, addition of HBr , heating with aq. KOH
Karnataka CET 2020
CHEMISTRY(KCET)

285553 Which of the following on heating gives an ether as major product?

P: \(\mathrm{C}_6 \mathrm{H}_5 \mathrm{CH}_2 \mathrm{Br}+\mathrm{CH}_3 \mathrm{ONa}\)
Q: \(\mathrm{C}_6 \mathrm{H}_5 \mathrm{ONa}+\mathrm{CH}_3 \mathrm{Br}\)
\(R\) : \(\left(\mathrm{CH}_3\right)_3 \mathrm{C}-\mathrm{Cl}+\mathrm{CH}_3 \mathrm{ONa}\)
S: \(\mathrm{C}_6 \mathrm{H}_5 \mathrm{CH}=\mathrm{CHCl}+\mathrm{CH}_3 \mathrm{ONa}\)

1 Both\(P\) and \(R\)
2 Both\(Q\) and \(S\)
3 Both\(P\) and \(Q\)
4 Both\(R\) and \(S\)
Karnataka CET 2020
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CHEMISTRY(KCET)

285549 Which is most viscous?

1 Ethylene glycol
2 Glycerol
3 Methanol
4 Ethanol
Karnataka CET 2022
CHEMISTRY(KCET)

285550 A compound '\(A\) ' \(\left(\mathrm{C}_7 \mathrm{H}_8 \mathrm{O}\right)\) is insoluble in \(\mathrm{NaHCO}_3\) solution but dissolves in NaOH and gives a characteristic colour with neutral \(\mathrm{FeCl}_3\) solution. When treated with bromine water compound ' \(A\) ' forms the compound ' \(B\) ' with the formula, \(\mathrm{C}_7 \mathrm{H}_5 \mathrm{OBr}_3\). ' \(A\) ' is

Ans:b
Exp:(b)

Karnataka CET 2021
CHEMISTRY(KCET)

285551 \(\mathrm{CH}_3 \mathrm{CHO} \xrightarrow[\text { (ii) } \mathrm{H}_3 \mathrm{O}^{+}]{\text {(i) } \mathrm{CH}_3 \mathrm{MgBr}} A \xrightarrow[\Delta]{\text { Conc. } \mathrm{H}_2 \mathrm{SO}_4} B\)
\(\xrightarrow[\text { (ii) } \mathrm{H}_2 \mathrm{O}_2 \mathrm{OH}^{-}]{ } C\)
\(A\) and \(C\) are

1 identical
2 position isomers
3 functional isomers
4 optical isomers.
Karnataka CET 2021
CHEMISTRY(KCET)

285552 The steps involved in the conversion of propan-2-ol to propan-1-ol are in the order

1 heating with \(\mathrm{PCl}_5\), heating with alc. KOH , acid catalysed addition of water
2 heating with \(\mathrm{PCl}_5\), heating with alc. KOH , hydroboration oxidation
3 dehyration, addition of HBr in presence of peroxide, heating with alc. KOH
4 dehydration, addition of HBr , heating with aq. KOH
Karnataka CET 2020
CHEMISTRY(KCET)

285553 Which of the following on heating gives an ether as major product?

P: \(\mathrm{C}_6 \mathrm{H}_5 \mathrm{CH}_2 \mathrm{Br}+\mathrm{CH}_3 \mathrm{ONa}\)
Q: \(\mathrm{C}_6 \mathrm{H}_5 \mathrm{ONa}+\mathrm{CH}_3 \mathrm{Br}\)
\(R\) : \(\left(\mathrm{CH}_3\right)_3 \mathrm{C}-\mathrm{Cl}+\mathrm{CH}_3 \mathrm{ONa}\)
S: \(\mathrm{C}_6 \mathrm{H}_5 \mathrm{CH}=\mathrm{CHCl}+\mathrm{CH}_3 \mathrm{ONa}\)

1 Both\(P\) and \(R\)
2 Both\(Q\) and \(S\)
3 Both\(P\) and \(Q\)
4 Both\(R\) and \(S\)
Karnataka CET 2020
Join With Us for More Updates
CHEMISTRY(KCET)

285549 Which is most viscous?

1 Ethylene glycol
2 Glycerol
3 Methanol
4 Ethanol
Karnataka CET 2022
CHEMISTRY(KCET)

285550 A compound '\(A\) ' \(\left(\mathrm{C}_7 \mathrm{H}_8 \mathrm{O}\right)\) is insoluble in \(\mathrm{NaHCO}_3\) solution but dissolves in NaOH and gives a characteristic colour with neutral \(\mathrm{FeCl}_3\) solution. When treated with bromine water compound ' \(A\) ' forms the compound ' \(B\) ' with the formula, \(\mathrm{C}_7 \mathrm{H}_5 \mathrm{OBr}_3\). ' \(A\) ' is

Ans:b
Exp:(b)

Karnataka CET 2021
CHEMISTRY(KCET)

285551 \(\mathrm{CH}_3 \mathrm{CHO} \xrightarrow[\text { (ii) } \mathrm{H}_3 \mathrm{O}^{+}]{\text {(i) } \mathrm{CH}_3 \mathrm{MgBr}} A \xrightarrow[\Delta]{\text { Conc. } \mathrm{H}_2 \mathrm{SO}_4} B\)
\(\xrightarrow[\text { (ii) } \mathrm{H}_2 \mathrm{O}_2 \mathrm{OH}^{-}]{ } C\)
\(A\) and \(C\) are

1 identical
2 position isomers
3 functional isomers
4 optical isomers.
Karnataka CET 2021
CHEMISTRY(KCET)

285552 The steps involved in the conversion of propan-2-ol to propan-1-ol are in the order

1 heating with \(\mathrm{PCl}_5\), heating with alc. KOH , acid catalysed addition of water
2 heating with \(\mathrm{PCl}_5\), heating with alc. KOH , hydroboration oxidation
3 dehyration, addition of HBr in presence of peroxide, heating with alc. KOH
4 dehydration, addition of HBr , heating with aq. KOH
Karnataka CET 2020
CHEMISTRY(KCET)

285553 Which of the following on heating gives an ether as major product?

P: \(\mathrm{C}_6 \mathrm{H}_5 \mathrm{CH}_2 \mathrm{Br}+\mathrm{CH}_3 \mathrm{ONa}\)
Q: \(\mathrm{C}_6 \mathrm{H}_5 \mathrm{ONa}+\mathrm{CH}_3 \mathrm{Br}\)
\(R\) : \(\left(\mathrm{CH}_3\right)_3 \mathrm{C}-\mathrm{Cl}+\mathrm{CH}_3 \mathrm{ONa}\)
S: \(\mathrm{C}_6 \mathrm{H}_5 \mathrm{CH}=\mathrm{CHCl}+\mathrm{CH}_3 \mathrm{ONa}\)

1 Both\(P\) and \(R\)
2 Both\(Q\) and \(S\)
3 Both\(P\) and \(Q\)
4 Both\(R\) and \(S\)
Karnataka CET 2020