Alcohols can be distinguished from ethers by

Alcohols can be distinguished from ethers by
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Alcohols can be distinguished from ethers by A. Sodium metal B. Ester formation C. Iodoform test D. All the above
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Assertion: Intermolecular dehydration is not useful for the perparation of unsymmetrical ethers from primary alcohols Reason: The reaction leads to a

Description : Assertion: Intermolecular dehydration is not useful for the perparation of unsymmetrical ethers from primary alcohols Reason: The reaction leads to a

Last Answer : Assertion: Intermolecular dehydration is not useful for the perparation of unsymmetrical ethers from primary ... . Assertion is false, Reason is true

Which group forms the strongest H-bonds to water molecules? (a) Alcohols (b) Ethers (c) Phenols (d) All equally strong

Description : Which group forms the strongest H-bonds to water molecules? (a) Alcohols (b) Ethers (c) Phenols (d) All equally strong

Last Answer : Phenols

Which of the following show n→ ℿ * electronic transitions? a. Alcohols b. Ethers c.Alkanes d. Aldehydes

Description : Which of the following show n→ ℿ * electronic transitions? a. Alcohols b. Ethers c.Alkanes d. Aldehydes

Last Answer : d. Aldehydes

Phenols can be easily distinguished from alcohols because (a) phenols are soluble in NaOH, but alcohols are not (b) alcohols are soluble in NaOH, but phenols are not (c) phenols are soluble in NaHCO3, but alcohols are not (d) alcohols are soluble in NaHCO3, but phenols are not

Description : Phenols can be easily distinguished from alcohols because (a) phenols are soluble in NaOH, but alcohols are not (b) alcohols are soluble in NaOH, but phenols are not (c) phenols are soluble in NaHCO3, but alcohols are not (d) alcohols are soluble in NaHCO3, but phenols are not

Last Answer : phenols are soluble in NaOH, but alcohols are not

Ethers are isomeric with

Description : Ethers are isomeric with

Last Answer : Ethers are isomeric with A. Aldehydes B. Acids C. Alcohols D. Ketones

Which of the following types of ethers cannot be sythesized by Williamson synthesis ?

Description : Which of the following types of ethers cannot be sythesized by Williamson synthesis ?

Last Answer : Which of the following types of ethers cannot be sythesized by Williamson synthesis ? A. `H_(3)C-overset(CH_(3)) ... 5)-O-C_(6)H_(5)` D. None of these

Assertion (A): Alkyl aryl ethers on reaction with HI give alkyl iodide phenols Reason (R): Aryl - oxygen bond is weaker than alkyl oxygen bond

Description : Assertion (A): Alkyl aryl ethers on reaction with HI give alkyl iodide phenols Reason (R): Aryl - oxygen bond is weaker than alkyl oxygen bond

Last Answer : Assertion (A): Alkyl aryl ethers on reaction with HI give alkyl iodide phenols Reason (R): Aryl - oxygen ... is false D. A is false but R is true

Assertion: (A) Ethers are relatively inert when compared to `C_(2)H_(5)OH` Reason (R): The hybridization of C and O in `CH_(3)-O-CH_(3) is SP^(3)`

Description : Assertion: (A) Ethers are relatively inert when compared to `C_(2)H_(5)OH` Reason (R): The hybridization of C and O in `CH_(3)-O-CH_(3) is SP^(3)`

Last Answer : Assertion: (A) Ethers are relatively inert when compared to `C_(2)H_(5)OH` Reason (R): The hybridization of ... R is false D. A is false but R is true

`C-O-C` bond in ethers can be cleaved by

Description : `C-O-C` bond in ethers can be cleaved by

Last Answer : `C-O-C` bond in ethers can be cleaved by A. `KMnO_(4)` B. `LiAlH_(4)` C. KOH D. HI

Ethers are obtained by

Description : Ethers are obtained by

Last Answer : Ethers are obtained by A. Reaction of alkyl halide with dry ZnO B. Reaction of alkyl halide with ... Reaction of alkyl halide with moist `Ag_(2)O`

The number of metameric ethers possible with the formula `C_(4)H_(10)O` are

Description : The number of metameric ethers possible with the formula `C_(4)H_(10)O` are

Last Answer : The number of metameric ethers possible with the formula `C_(4)H_(10)O` are A. 4 B. 3 C. 2 D. 5

Ethers are cleaved by acids not by based. Why ?

Description : Ethers are cleaved by acids not by based. Why ? 

Last Answer : The C - O - C bond in ethers like the C - OH bond in alcohols is quite strong. In order to weaken it, the oxygen atom must be protonated. A subsequent nucleophile attack by a strong ... protonation of O atom of ether and therefore only acids can bring about the cleavage of ethers and not bases.

Soap is (a) a mixture of salts of fatty acids (b) a salt of glycerol (c) a mixture of ethers (d) a mixture of aromatic ethers

Description : Soap is (a) a mixture of salts of fatty acids (b) a salt of glycerol (c) a mixture of ethers (d) a mixture of aromatic ethers

Last Answer : a mixture of salts of fatty acids

Cyclic ethers with three-membered ring are called (a) Lactones (b) Oxiranes (c) Alkoxides (d) Epoxy resins

Description : Cyclic ethers with three-membered ring are called (a) Lactones (b) Oxiranes (c) Alkoxides (d) Epoxy resins

Last Answer : Oxiranes

Ethers react with cold concentrated H2SO4 to form (a) Oxonium salts (b) Alkenes (c) Alkoxides (d) Zwitterions

Description : Ethers react with cold concentrated H2SO4 to form (a) Oxonium salts (b) Alkenes (c) Alkoxides (d) Zwitterions

Last Answer : Oxonium salts

Ethers can be freed from peroxides by treatment with (a) Ferrous salt (b) Sodium carbonate (c) Ferric salt (d) Sodium bicarbonate

Description : Ethers can be freed from peroxides by treatment with (a) Ferrous salt (b) Sodium carbonate (c) Ferric salt (d) Sodium bicarbonate

Last Answer : Ferric salt

Ethers are stored in brown bottles. This is because on exposure to air and light ethers are converted to (a) Peroxides (b) Oxonium ions (c) Ozonides (d) Electrophiles

Description : Ethers are stored in brown bottles. This is because on exposure to air and light ethers are converted to (a) Peroxides (b) Oxonium ions (c) Ozonides (d) Electrophiles

Last Answer : Peroxides

Ethers are kept in brown bottles because (a) Brown bottles are cheaper than colorless clear bottles (b) Ethers absorb moisture(c) Ethers evaporate readily(d) Ethers are oxidized to explosive peroxides

Description : Ethers are kept in brown bottles because (a) Brown bottles are cheaper than colorless clear bottles (b) Ethers absorb moisture (c) Ethers evaporate readily (d) Ethers are oxidized to explosive peroxides

Last Answer : Ethers are oxidized to explosive peroxides

Ethers are (a) Lewis acids(b) Neutral(c) Lewis bases(d) Can not be predicted

Description : Ethers are (a) Lewis acids (b) Neutral (c) Lewis bases (d) Can not be predicted

Last Answer : Lewis bases

Why do alcohols made from different plants affect us so differently?

Description : Why do alcohols made from different plants affect us so differently?

Last Answer : answer:I think it’s confirmation bias. The same reason why a football player “always” wins games when he wears his “lucky” sock, except of course for those he looses. I admit I’m not an expert, so there could be a valid scientific explanation.

Classify the following alcohols as primary, secondary, or tertiary :

Description : Classify the following alcohols as primary, secondary, or tertiary :

Last Answer : Classify the following alcohols as primary, secondary, or tertiary : A. `(CH_(3))_(3)C CH_(2)OH` B. `CH_(3)CH( ... `(CH_(3))_(2)C(OH)CH_(2)CH_(3)` D.

The order of reactivity of following alcohols, towards conc. HCl is :

Description : The order of reactivity of following alcohols, towards conc. HCl is :

Last Answer : The order of reactivity of following alcohols, towards conc. HCl is : A. `IgtIIgtIIIgtIV` B. `IgtIIIgtIIgtIV` C. `IVgtIIIgtIIgtI` D. `IVgtIIIgtIgtII`

Which of the following reagents can be used to differentiate `1^(@)` and `3^(@)` alcohols ?

Description : Which of the following reagents can be used to differentiate `1^(@)` and `3^(@)` alcohols ?

Last Answer : Which of the following reagents can be used to differentiate `1^(@)` and `3^(@)` alcohols ? A. pcc B. `K_( ... +)` C. Jones reagent D. `Br_(2)-H_(2)O`

From amongest the following alcohols, the one that would react fastest with conc. HCl and anhydrous `ZnCl_(2)` is

Description : From amongest the following alcohols, the one that would react fastest with conc. HCl and anhydrous `ZnCl_(2)` is

Last Answer : From amongest the following alcohols, the one that would react fastest with conc. HCl and anhydrous ` ... . 2-Methylpropan-2-ol D. 2-Methylpropanol-1

Assertion : Phenols are more acidic than aliphatic alcohols. Reason : Phenoxides are stabilized by resonance.

Description : Assertion : Phenols are more acidic than aliphatic alcohols. Reason : Phenoxides are stabilized by resonance.

Last Answer : Assertion : Phenols are more acidic than aliphatic alcohols. Reason : Phenoxides are stabilized by resonance. ... D. A is incorrect but R is correct

`R-OH + HX to R -X + H_(2)O` In the above reaction the reactivity of different alcohols is

Description : `R-OH + HX to R -X + H_(2)O` In the above reaction the reactivity of different alcohols is

Last Answer : `R-OH + HX to R -X + H_(2)O` In the above reaction the reactivity of different alcohols is ... `gt` secondary D. Secondary `gt` primary `gt` tertiary

Which of the following alcohols is expected to have a lowest `pK_(a)` value ?

Description : Which of the following alcohols is expected to have a lowest `pK_(a)` value ?

Last Answer : Which of the following alcohols is expected to have a lowest `pK_(a)` value ? A. Ethanol B. ... C. 2, 2, 2-Trifluoroethanol D. 2-Chloroethanol

Lucas test is used to make distinction between `1^(@), 2^(@)` and `3^(@)` alcohols. This do not show that

Description : Lucas test is used to make distinction between `1^(@), 2^(@)` and `3^(@)` alcohols. This do not show that

Last Answer : Lucas test is used to make distinction between `1^(@), 2^(@)` and `3^(@)` alcohols. ... those giving blue or white colour during Victor Mayor test.

Which of the following is the best dehydrating agent for `1^(@)` alcohols

Description : Which of the following is the best dehydrating agent for `1^(@)` alcohols

Last Answer : Which of the following is the best dehydrating agent for `1^(@)` alcohols A. Con `H_(2)SO_(4)` B. `CaO` C. `Al_(2)O_(3)` D. `POCl_(3)`

Assertion (A): Dehydration of alcohols can be carried out with Conc `H_(2)SO_(4)` but not with conc HCl Reason (R): `H_(2)SO_(4)` is dibasic while HCl

Description : Assertion (A): Dehydration of alcohols can be carried out with Conc `H_(2)SO_(4)` but not with conc HCl Reason (R): `H_(2)SO_(4)` is dibasic while HCl

Last Answer : Assertion (A): Dehydration of alcohols can be carried out with Conc `H_(2)SO_(4)` but not with conc HCl ... R is false D. A is false but R is true

How many isomers of `C_(5)H_(11)OH` will be primary alcohols?

Description : How many isomers of `C_(5)H_(11)OH` will be primary alcohols?

Last Answer : How many isomers of `C_(5)H_(11)OH` will be primary alcohols? A. 5 B. 4 C. 2 D. 3

There are three alcohols x, y, z which have 2, 1 and 0 alpha hydrogen atoms(s) respectively. Which does not give Lucas Test immediately

Description : There are three alcohols x, y, z which have 2, 1 and 0 alpha hydrogen atoms(s) respectively. Which does not give Lucas Test immediately

Last Answer : There are three alcohols x, y, z which have 2, 1 and 0 alpha hydrogen atoms(s) respectively. Which does ... y C. z D. all the three do not give test

The reaction `2ROH + 2Na rarr 2RONa + H_(2)` suggests that alcohols are

Description : The reaction `2ROH + 2Na rarr 2RONa + H_(2)` suggests that alcohols are

Last Answer : The reaction `2ROH + 2Na rarr 2RONa + H_(2)` suggests that alcohols are A. basic B. amphoteric C. neutral D. acidic

To bring about dehydration of alcohols we can use

Description : To bring about dehydration of alcohols we can use

Last Answer : To bring about dehydration of alcohols we can use A. Conc. `H_(2)SO_(4)` B. anhydrous `Al_(2)O_(3)` C. ZnO D. both 1,2

Are alcohol's strong electrolytes?

Description : Are alcohol's strong electrolytes?

Last Answer : Alcohols are not electrolytes.

Prostaglandins are (A) C2 unsaturated acids (B) C27 saturated alcohols (C) C20 saturated acids (D) C27 saturated alcohols

Description : Prostaglandins are (A) C2 unsaturated acids (B) C27 saturated alcohols (C) C20 saturated acids (D) C27 saturated alcohols

Last Answer : Answer : A

Waxes contain higher alcohols named as (A) Methyl (B) Ethyl (C) Phytyl (D) Cetyl

Description : Waxes contain higher alcohols named as (A) Methyl (B) Ethyl (C) Phytyl (D) Cetyl

Last Answer : Answer : D

Esters of fatty acids with higher alcohols other than glycerol are said to be (A) Waxes (B) Fats (C) Both (A) and (B) (D) None of these

Description : Esters of fatty acids with higher alcohols other than glycerol are said to be (A) Waxes (B) Fats (C) Both (A) and (B) (D) None of these

Last Answer : Answer : A

Sphingomyelins: (A) Phospholipids (B) Nitrolipids (C) Alcohols (D) None of these

Description : Sphingomyelins: (A) Phospholipids (B) Nitrolipids (C) Alcohols (D) None of these

Last Answer : Answer : A

Secretion of gastrin is evoked by (A) Entry of food into stomach (B) Vagal stimulation (C) Lower aliphatic alcohols (D) All of these

Description : Secretion of gastrin is evoked by (A) Entry of food into stomach (B) Vagal stimulation (C) Lower aliphatic alcohols (D) All of these

Last Answer : Answer : D

Alcohols alone cannot be used in CI engines as a) their self ignition temperature is high b) latent heat of vaporization is high c) all of the mentioned d) none of the mentioned

Description : Alcohols alone cannot be used in CI engines as a) their self ignition temperature is high b) latent heat of vaporization is high c) all of the mentioned d) none of the mentioned

Last Answer : Answer: c Explanation: None.

Which of the following statement is not correct with respect to alcohols as alternate fuel in IC engines a) anti-knock characteristics of alcohol is poor b) alcohol contains about half the heat energy of gasoline/litre c) alcohol does not vaporize as easily as gasoline d) alcohols are corrosive in nature

Description : Which of the following statement is not correct with respect to alcohols as alternate fuel in IC engines a) anti-knock characteristics of alcohol is poor b) alcohol contains about half the heat ... /litre c) alcohol does not vaporize as easily as gasoline d) alcohols are corrosive in nature

Last Answer : Answer: a Explanation: Anti-knock characteristics of alcohol is good.

Aspartame is the name of a product used by diabetic patients as a sweetening agent. It belongs to the class of — (1) Carbohydrates (2) Peptides (3) Polyhydric alcohols (4) Alkaloids

Description : Aspartame is the name of a product used by diabetic patients as a sweetening agent. It belongs to the class of — (1) Carbohydrates (2) Peptides (3) Polyhydric alcohols (4) Alkaloids

Last Answer : (2) Peptides Explanation: Aspartame is an artificial, nonsaccharide sweetener used as a sugar substitute in some foods and beverages. It is a methyl ester of the aspartic acid/phenylalanine ... more severe conditions, the peptide bonds are also hydrolyzed, resulting in the free amino acids.

Pick out the wrong statement. (A) Linear polymers are formed from bifunctional groups only and are normally thermoplastic (B) Cross-linked branched chain polymers are either elastometric or thermosetting (C) Branching in case of cross-linked polymers caused by small amount of impurities in bifunctional monomer formulation reduces its solubility and increases the softening point (D) Dibasic acids reacts with dihydric alcohols to give polyesters using addition polymerisation reaction

Description : Pick out the wrong statement. (A) Linear polymers are formed from bifunctional groups only and are normally thermoplastic (B) Cross-linked branched chain polymers are either elastometric or ... (D) Dibasic acids reacts with dihydric alcohols to give polyesters using addition polymerisation reaction

Last Answer : D) Dibasic acids reacts with dihydric alcohols to give polyesters using addition polymerisation reaction

Which is an anticing compound? (A) Amyl nitrate (B) Alcohols (C) Mercaptans (D) Pyridine

Description : Which is an anticing compound? (A) Amyl nitrate (B) Alcohols (C) Mercaptans (D) Pyridine

Last Answer : (B) Alcohols

Why are amines always less acidic than comparable alcohols?

Description : Why are amines always less acidic than comparable alcohols?

Last Answer : Ans.--- Amines are less acidic than alcohols because of oxygen higher electronegative & smaller size. Therefore O-H breakes easily than N-H bond. 

Why is it that secondary alcohols can only undergo a single oxidation step in contrast to primary alcohols?

Description : Why is it that secondary alcohols can only undergo a single oxidation step in contrast to primary alcohols?

Last Answer : 1. Once the oxidation has reached the ketone stage, (primary alcohols on oxidation yield aldehyde where as secondary alcohols on oxidation yield a ketone), it is impossible to put more oxygen atoms on the relevant carbon atom without rupturing the backbone of the molecule.

Alcohols acts as weak bases. Explain.

Description : Alcohols acts as weak bases. Explain.

Last Answer : The oxygen atom of the hydroxyl group has two lone pairs of electrons. Therefore alcohols accept a proton from strong mineral acid to form oxonium ions. Hence act as weak bases.

Phenols do not undergo substitution of the — OH group like alcohols. Explain.

Description : Phenols do not undergo substitution of the — OH group like alcohols. Explain.

Last Answer : The C — O bond in phenols has some double bond character due to resonance and hence cannot be easily cleaved by a nucleophile. In contrast, the C — O bond in alcohols is a pure single bond and hence can be easily cleaved by a nucleo phile.

Alcohols are easily protonated than phenols. Justify.

Description : Alcohols are easily protonated than phenols. Justify.

Last Answer : Ans. In phenols lone pair of electrons on the oxygen atom are delocalised over the benzene ring due to resonance and hence are not easily available for protonation. In contrast in alcohols, ... oxygen atom are localized due to absence of resonance and hence are easily available for protonation.