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Lesson 5: Hydrocarbon Derivatives – Alcohols and Phenols — Picture questions (exam style)

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  • Questions count: 26
  • Passing grade: 60%
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1.
Starting from 28 g of C₂H₅OH in the sequence shown (yield of each step on its arrow, molar masses in brackets). Which option is correct?
Starting from 28 g of C₂H₅OH in the sequence shown (yield of each step on its arrow, molar masses in brackets). Which option is correct?
mass of CH₃COOC₂H₅ = 28.1 g, overall yield = 68.3%
mass of CH₃COOC₂H₅ = 28.1 g, overall yield = 31.5%
mass of CH₃COOC₂H₅ = 16.9 g, overall yield = 31.5%
mass of CH₃COOC₂H₅ = 16.9 g, overall yield = 60%
2.
For the compound shown (2-methylpropan-2-ol), which option is correct?
For the compound shown (2-methylpropan-2-ol), which option is correct?
turns dichromate green, giving a ketone, reacts with NaOH forming a salt
turns dichromate green, giving a ketone, no reaction with NaOH
not oxidised by dichromate, no reaction with NaOH
not oxidised by dichromate, reacts with NaOH forming a salt
3.
What organic product forms when the alcohol shown is oxidised by acidified potassium dichromate, distilling off immediately?
What organic product forms when the alcohol shown is oxidised by acidified potassium dichromate, distilling off immediately?
pentan-3-one
butanal
ethanal
pentanal
4.
What mass of sodium reacts exactly with 2.3 g of the alcohol shown? (Na = 23)
What mass of sodium reacts exactly with 2.3 g of the alcohol shown? (Na = 23)
0.441 g
0.882 g
1.15 g
1.76 g
5.
What mass of NaOH reacts exactly with 2.35 g of phenol (acting as a weak acid)?
What mass of NaOH reacts exactly with 2.35 g of phenol (acting as a weak acid)?
1.00 g
2.00 g
3.00 g
94.0 g
6.
1.5 g of the alcohol shown (cyclohexanol) reacts with excess sodium. What volume of H₂ (STP) is evolved?
1.5 g of the alcohol shown (cyclohexanol) reacts with excess sodium. What volume of H₂ (STP) is evolved?
0.336 L
0.0840 L
0.365 L
0.168 L
7.
Excess bromine water is added to 0.94 g of phenol, giving the white precipitate shown. What is its mass? (Br = 80, C = 12, O = 16, H = 1)
Excess bromine water is added to 0.94 g of phenol, giving the white precipitate shown. What is its mass? (Br = 80, C = 12, O = 16, H = 1)
2.52 g
2.82 g
3.31 g
1.73 g
8.
Study the scheme. Which option is correct?
Study the scheme. Which option is correct?
(A): benzene, (B): phenyl ethanoate
(A): sodium phenoxide, (B): methylbenzene
(A): sodium phenoxide, (B): methoxybenzene
(A): sodium benzoate, (B): methylbenzene
9.
Starting from 4.2 g of C₆H₅OH in the sequence shown (yield of each step on its arrow, molar masses in brackets). Which option is correct?
Starting from 4.2 g of C₆H₅OH in the sequence shown (yield of each step on its arrow, molar masses in brackets). Which option is correct?
mass of C₆H₂Br₃OH = 3.15 g, overall yield = 75%
mass of C₆H₂Br₃OH = 14.8 g, overall yield = 75%
mass of C₆H₂Br₃OH = 11.1 g, overall yield = 75%
mass of C₆H₂Br₃OH = 11.1 g, overall yield = 85%
10.
For the compound shown (propan-2-ol), which option is correct?
For the compound shown (propan-2-ol), which option is correct?
not oxidised; violet colour with FeCl₃, reacts with NaOH forming a salt
not oxidised by dichromate, no reaction with NaOH
turns dichromate green, giving a ketone, reacts with NaOH forming a salt
turns dichromate green, giving a ketone, no reaction with NaOH
11.
What volume of alkene (STP) forms when 12 g of the alcohol shown is dehydrated with conc. H₂SO₄ at 180 °C?
What volume of alkene (STP) forms when 12 g of the alcohol shown is dehydrated with conc. H₂SO₄ at 180 °C?
3.63 L
1.82 L
7.26 L
5.84 L
12.
What volume of alkene (STP) forms when 2.3 g of the alcohol shown is dehydrated with conc. H₂SO₄ at 180 °C?
What volume of alkene (STP) forms when 2.3 g of the alcohol shown is dehydrated with conc. H₂SO₄ at 180 °C?
1.12 L
1.01 L
0.505 L
0.253 L
13.
For the compound shown (phenol), which option is correct?
For the compound shown (phenol), which option is correct?
turns dichromate green, giving a ketone, reacts with NaOH forming a salt
turns dichromate green, giving a ketone, no reaction with NaOH
not oxidised by dichromate, reacts with NaOH forming a salt
not oxidised; violet colour with FeCl₃, reacts with NaOH forming a salt
14.
2.3 g of the alcohol shown (2-methylpropan-2-ol) reacts with excess sodium. What volume of H₂ (STP) is evolved?
2.3 g of the alcohol shown (2-methylpropan-2-ol) reacts with excess sodium. What volume of H₂ (STP) is evolved?
0.696 L
0.348 L
0.174 L
0.560 L
15.
For the compound shown (propan-1-ol), which option is correct?
For the compound shown (propan-1-ol), which option is correct?
turns dichromate green, giving an aldehyde, no reaction with NaOH
not oxidised; violet colour with FeCl₃, no reaction with NaOH
turns dichromate green, giving a ketone, no reaction with NaOH
not oxidised by dichromate, reacts with NaOH forming a salt
16.
What volume of alkene (STP) forms when 3.0 g of the alcohol shown is dehydrated with conc. H₂SO₄ at 180 °C?
What volume of alkene (STP) forms when 3.0 g of the alcohol shown is dehydrated with conc. H₂SO₄ at 180 °C?
0.764 L
1.46 L
0.382 L
1.53 L
17.
What volume of alkene (STP) forms when 7.4 g of the alcohol shown is dehydrated with conc. H₂SO₄ at 180 °C?
What volume of alkene (STP) forms when 7.4 g of the alcohol shown is dehydrated with conc. H₂SO₄ at 180 °C?
1.80 L
7.21 L
6.27 L
3.60 L
18.
What mass of sodium reacts exactly with 12 g of the alcohol shown? (Na = 23)
What mass of sodium reacts exactly with 12 g of the alcohol shown? (Na = 23)
6.27 g
1.57 g
3.14 g
6.00 g
19.
Starting from 15.6 g of C₂H₅OH in the sequence shown (yield of each step on its arrow, molar masses in brackets). Which option is correct?
Starting from 15.6 g of C₂H₅OH in the sequence shown (yield of each step on its arrow, molar masses in brackets). Which option is correct?
mass of C₂H₄(OH)₂ = 21 g, overall yield = 55%
mass of C₂H₄(OH)₂ = 7.02 g, overall yield = 50%
mass of C₂H₄(OH)₂ = 9.46 g, overall yield = 45%
mass of C₂H₄(OH)₂ = 18.9 g, overall yield = 70%
20.
For the compound shown (ethanol), which option is correct?
For the compound shown (ethanol), which option is correct?
turns dichromate green, giving an aldehyde, no reaction with NaOH
not oxidised by dichromate, reacts with NaOH forming a salt
turns dichromate green, giving an aldehyde, reacts with NaOH forming a salt
turns dichromate green, giving a ketone, reacts with NaOH forming a salt
21.
What mass of sodium reacts exactly with 4.6 g of the alcohol shown? (Na = 23)
What mass of sodium reacts exactly with 4.6 g of the alcohol shown? (Na = 23)
1.76 g
3.53 g
2.30 g
0.882 g
22.
What volume of alkene (STP) forms when 7.4 g of the alcohol shown is dehydrated with conc. H₂SO₄ at 180 °C?
What volume of alkene (STP) forms when 7.4 g of the alcohol shown is dehydrated with conc. H₂SO₄ at 180 °C?
1.88 L
3.77 L
3.60 L
0.942 L
23.
For the compound shown (butan-2-ol), which option is correct?
For the compound shown (butan-2-ol), which option is correct?
turns dichromate green, giving an aldehyde, reacts with NaOH forming a salt
not oxidised; violet colour with FeCl₃, reacts with NaOH forming a salt
turns dichromate green, giving a ketone, no reaction with NaOH
turns dichromate green, giving a ketone, reacts with NaOH forming a salt
24.
What mass of sodium reacts exactly with 2.3 g of the alcohol shown? (Na = 23)
What mass of sodium reacts exactly with 2.3 g of the alcohol shown? (Na = 23)
1.15 g
0.357 g
1.43 g
0.715 g
25.
1.5 g of the alcohol shown (pentan-2-ol) reacts with excess sodium. What volume of H₂ (STP) is evolved?
1.5 g of the alcohol shown (pentan-2-ol) reacts with excess sodium. What volume of H₂ (STP) is evolved?
0.365 L
0.382 L
0.191 L
0.0955 L
26.
30 g of the alcohol shown (3-methylbutan-2-ol) reacts with excess sodium. What volume of H₂ (STP) is evolved?
30 g of the alcohol shown (3-methylbutan-2-ol) reacts with excess sodium. What volume of H₂ (STP) is evolved?
7.30 L
7.64 L
1.91 L
3.82 L
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