15374
Glycerol boils at \({290\,^o}C\) with slight decomposition. Impure glycerine can be purified by
1 Steam distillation
2 Simple distillation
3 Vacuum distillation
4 Extraction with a solvent
Explanation:
(c) The liquids which decompose at its boiling point can be purified by vacuum distillation. Glycerol which decomposes at its boiling point \((-\,563\,K)\) can be distilled without decomposition at \(453\,K\) under \(12\,mm\, Hg\) pressure.
ALCOHOLS, PHENOLS AND ETHER
15375
Phenol \(\xrightarrow{NaN{{O}_{2}}/{{H}_{2}}S{{O}_{4}}}B\xrightarrow{{{H}_{2}}O}C\xrightarrow{NaOH}D\) Name of the above reaction is
1 Liebermann’s reaction
2 Phthalein fusion test
3 Reimer-Tiemann reaction
4 Schottenf-Baumann reaction
Explanation:
(a)Liebermann’s reaction.
ALCOHOLS, PHENOLS AND ETHER
15376
The correct order of boiling point for primary \(({1^o}),\) secondary \(({2^o})\) and tertiary \(({3^o})\) alcohols is
1 \({1^o} > {2^o} > {3^o}\)
2 \({3^o} > {2^o} > {1^o}\)
3 \({2^o} > {1^o} > {3^o}\)
4 \({2^o} > {3^o} > {1^o}\)
Explanation:
(a)\({1^o}\)alcohol \( > {2^o}\)alcohol \( > {3^o}\)alcohol Boiling point of alcohols decreases as the number of branches increases.
ALCOHOLS, PHENOLS AND ETHER
15377
What will be the products of reaction if methoxybenzene reacts with \(HI\)
15374
Glycerol boils at \({290\,^o}C\) with slight decomposition. Impure glycerine can be purified by
1 Steam distillation
2 Simple distillation
3 Vacuum distillation
4 Extraction with a solvent
Explanation:
(c) The liquids which decompose at its boiling point can be purified by vacuum distillation. Glycerol which decomposes at its boiling point \((-\,563\,K)\) can be distilled without decomposition at \(453\,K\) under \(12\,mm\, Hg\) pressure.
ALCOHOLS, PHENOLS AND ETHER
15375
Phenol \(\xrightarrow{NaN{{O}_{2}}/{{H}_{2}}S{{O}_{4}}}B\xrightarrow{{{H}_{2}}O}C\xrightarrow{NaOH}D\) Name of the above reaction is
1 Liebermann’s reaction
2 Phthalein fusion test
3 Reimer-Tiemann reaction
4 Schottenf-Baumann reaction
Explanation:
(a)Liebermann’s reaction.
ALCOHOLS, PHENOLS AND ETHER
15376
The correct order of boiling point for primary \(({1^o}),\) secondary \(({2^o})\) and tertiary \(({3^o})\) alcohols is
1 \({1^o} > {2^o} > {3^o}\)
2 \({3^o} > {2^o} > {1^o}\)
3 \({2^o} > {1^o} > {3^o}\)
4 \({2^o} > {3^o} > {1^o}\)
Explanation:
(a)\({1^o}\)alcohol \( > {2^o}\)alcohol \( > {3^o}\)alcohol Boiling point of alcohols decreases as the number of branches increases.
ALCOHOLS, PHENOLS AND ETHER
15377
What will be the products of reaction if methoxybenzene reacts with \(HI\)
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ALCOHOLS, PHENOLS AND ETHER
15374
Glycerol boils at \({290\,^o}C\) with slight decomposition. Impure glycerine can be purified by
1 Steam distillation
2 Simple distillation
3 Vacuum distillation
4 Extraction with a solvent
Explanation:
(c) The liquids which decompose at its boiling point can be purified by vacuum distillation. Glycerol which decomposes at its boiling point \((-\,563\,K)\) can be distilled without decomposition at \(453\,K\) under \(12\,mm\, Hg\) pressure.
ALCOHOLS, PHENOLS AND ETHER
15375
Phenol \(\xrightarrow{NaN{{O}_{2}}/{{H}_{2}}S{{O}_{4}}}B\xrightarrow{{{H}_{2}}O}C\xrightarrow{NaOH}D\) Name of the above reaction is
1 Liebermann’s reaction
2 Phthalein fusion test
3 Reimer-Tiemann reaction
4 Schottenf-Baumann reaction
Explanation:
(a)Liebermann’s reaction.
ALCOHOLS, PHENOLS AND ETHER
15376
The correct order of boiling point for primary \(({1^o}),\) secondary \(({2^o})\) and tertiary \(({3^o})\) alcohols is
1 \({1^o} > {2^o} > {3^o}\)
2 \({3^o} > {2^o} > {1^o}\)
3 \({2^o} > {1^o} > {3^o}\)
4 \({2^o} > {3^o} > {1^o}\)
Explanation:
(a)\({1^o}\)alcohol \( > {2^o}\)alcohol \( > {3^o}\)alcohol Boiling point of alcohols decreases as the number of branches increases.
ALCOHOLS, PHENOLS AND ETHER
15377
What will be the products of reaction if methoxybenzene reacts with \(HI\)
15374
Glycerol boils at \({290\,^o}C\) with slight decomposition. Impure glycerine can be purified by
1 Steam distillation
2 Simple distillation
3 Vacuum distillation
4 Extraction with a solvent
Explanation:
(c) The liquids which decompose at its boiling point can be purified by vacuum distillation. Glycerol which decomposes at its boiling point \((-\,563\,K)\) can be distilled without decomposition at \(453\,K\) under \(12\,mm\, Hg\) pressure.
ALCOHOLS, PHENOLS AND ETHER
15375
Phenol \(\xrightarrow{NaN{{O}_{2}}/{{H}_{2}}S{{O}_{4}}}B\xrightarrow{{{H}_{2}}O}C\xrightarrow{NaOH}D\) Name of the above reaction is
1 Liebermann’s reaction
2 Phthalein fusion test
3 Reimer-Tiemann reaction
4 Schottenf-Baumann reaction
Explanation:
(a)Liebermann’s reaction.
ALCOHOLS, PHENOLS AND ETHER
15376
The correct order of boiling point for primary \(({1^o}),\) secondary \(({2^o})\) and tertiary \(({3^o})\) alcohols is
1 \({1^o} > {2^o} > {3^o}\)
2 \({3^o} > {2^o} > {1^o}\)
3 \({2^o} > {1^o} > {3^o}\)
4 \({2^o} > {3^o} > {1^o}\)
Explanation:
(a)\({1^o}\)alcohol \( > {2^o}\)alcohol \( > {3^o}\)alcohol Boiling point of alcohols decreases as the number of branches increases.
ALCOHOLS, PHENOLS AND ETHER
15377
What will be the products of reaction if methoxybenzene reacts with \(HI\)
