Alcohols, Phenols and Ethers — practice questions
69 curated practice questions from Alcohols, Phenols and Ethers (Chemistry JEE Advanced, NTA Exams) — 53 hard, 16 medium. Every question includes the final answer free; step-by-step worked solutions with a free account.
- Reimer-Tiemann reaction introduces an aldehyde group, on to the aromatic ring of phenol, ortho to the hydroxyl group…
- The acidic hydrolysis of ether (X) shown below is fastest when (2014)
- The order of reactivity of the following alcohols towards concentrated HCl array l ext I ext II array ____________ is
- In the given reaction scheme, P is a phenyl alkyl ether, Q is an aromatic compound; R and S are the major products. P…
- Secondary and tertiary alcohols always gives E 1 reaction in dehydration. Primary, alcohols whose β-carbon is 3 o or 4…
- The compound that does not liberate CO 2 , on treatment with aqueous sodium bicarbonate solution, is
- Assertion: Alcohols can be dried over anhydrous CaCl 2 . Reason: Anhydrous CaCl 2 absorbs moisture of aqueous ethyl…
- A compound ‘X’ undergoes reduction with LiAlH 4 to yield ‘Y’. When vapours of ‘Y’ are passed over freshly reduced…
- The acidic hydrolysis of ether ( X ) shown below is fastest when
- Assertion: Grignard reagent reacts with aldehydes and ketones to form alcohol. Reason: Alcohols have acidic hydrogen.
- Secondary and tertiary alcohols always gives E 1 reaction in dehydration. Primary, alcohols whose β-carbon is 3 o or 4…
- Which of the following will produce a primary alcohol by reacting with CH 3 MgI ?
- In the reaction the products are
- Benzene diazonium chloride on reaction with phenol in weakly basic medium gives
- Phenol when condensed with phthalic anhydride in presence of conc. H 2 SO 4 , yields:
- Sodium phenoxide when heated with CO 2 under pressure at 125 o C gives:
- Assertion: Phenol is more reactive than benzene towards electrophilic substitution. Reason: In the case of phenol, the…
- By a proper choice of reagents, both symmetrical and unsymmetrical ethers can be prepared by Williamson synthesis which…
- A tertiary alcohol H upon acid catalysed dehydration gives a product I. Ozonolysis of I leads to compounds J and K…
- When CH 3 MgI is made to react with acetone and the addition product is hydrolysed, we get:
- Cumene [ (ii) H _ 2 O , H ^ + ] (i) O _ 2 ( X ) and (Y) : (X) and (Y) respectively are:
- CH _ 3 COOH LiAlH _ 4 ( ~A ), ( A )+ CH _ 3 COOH H _ 3 O ^ + ( B )+ H _ 2 O In the above reaction ‘A’ and ‘B’…
- Phenol [ distillation ] Zinc ( A ) [ Conc. H _ 2 SO _ 4 at 60^ C ] Cons. ( B ) [ NaOH ] Zn ( C ) In the above reaction…
- Phenol on standing in air develops a red colour due to formation of:
- Secondary and tertiary alcohols always gives E 1 reaction in dehydration. Primary, alcohols whose β-carbon is 3 o or 4…
- In the given reaction scheme, P is a phenyl alkyl ether, Q is an aromatic compound; R and S are themajor products…
- The compound which reacts fastest with Lucas reagent at room temperature is
- The major product formed in the following reaction is: CH 3 CH(Cl)CH 2 CH 2 OH Aq. KOH
- The correct combination of names for isomeric alcohols with molecular formula C 4 H 10 O is/are (2014)
- (I) 1,2-dihydroxybenzene (II) 1,3-dihydroxybenzene (III) 1,4-dihydroxybenzene (IV) Hydroxybenzene. The increasing order…
- Diethyl ether on heating with concentrated HI gives two moles of
- Phenol reacts with bromine in carbon disulphide at low temperature to give
- The reaction products of C 6 H 5 OCH 3 + HI is
- 1-Propanol and 2-propanol can be best distinguished by
- Which of the following alcohol(s) can be prepared by the action of Grignard reagents with aldehydes?
- Heating together sodium ethoxide and ethyl chloride will give:
- 1-propanol and 2-propanol can be best distinguished by (2001)
- Compound ‘A’ (molecular formula C 3 H 8 O) is treated with acidified potassium dichromate to form a product ‘B’…
- Reaction of iso-propylbenzene with O 2 followed by the treatment with H 3 O + forms phenol and a by-product P. Reaction…
- Given : The compound(s), which on reaction with HNO 3 will give the product having degree of rotation, [ a ] D = −52.7°…
- When phenol is treated with excess bromine water, it gives
- Statement-1 : Solubility of n -alcohols in water decreases with increase in molecular weight. Statement-2 : The…
- Assertion : Phenol undergo Kolbe reaction, ethanol does not. Reason : Phenoxide ion is more basic than ethoxide ion.
- Assertion: HIO 4 , decomposes, 1,2-glycols but not 1,3-or higher glycols. Reason: Only 1,2-glycols from cyclic esters…
- Assertion : A rate of hydrolysis of methyl chloride to methanol is higher in DMF than in water. Reason : Hydrolysis of…
- The product of reaction CH 3 CH 2 OH [ Cu ] 300^ C ? is:
- Reimer-Tiemann reaction introduces an aldehyde group, on to the aromatic ring of phenol, ortho to the hydroxyl group…
- Phenol is heated with CCl 4 and alk. KOH to form salicylic acid. The reaction is known as:
- When phenyl magnesium bromide reacts with tert. butanol, which of the following is formed ? (2005)
- The compound formed by reaction of ethylene glycol and periodic acid (HIO 4 ) is:
- The compound (B) formed in the following sequence of reactions, CH _ 3 CH _ 2 CH _ 2 OH PCl _ 5 ( ~A ) Alc. KOH ( ~B )…
- To prepare propan-2-ol from methyl magnesium iodide, the chemical reagent required is:
- Which one of the following will most readily be dehydrated in acidic condition ? (2000)
- (I) 1, 2-dihydroxy benzene (2006) (II) 1, 3-dihydroxy benzene (III) 1, 4-dihydroxy benzene (IV) Hydroxy benzene The…
- Which of the following reactions will not yield alcohol as the major product ?
- By a proper choice of reagents, both symmetrical and unsymmetrical ethers can be prepared by Williamson synthesis which…
- The increasing order of boiling points of the below metioned alcohols is (I) 1, 2-dihydroxy benzene (II) 1, 3-dihydroxy…
- Assertion : Bromobenzene, upon reaction with Br 2 /Fe gives 1, 4-dibromobenzene as the major product. Reason : In…
- Assertion: Phenol is stronger acid than ethanol. Reason: Group with + M effect and -I effect decrease acidity at…
- The compound that will react most readily with NaOH to form methanol is (2001)
- Assertion : Resorcinol turns FeCl 3 solution purple. Reason : Resorcinol have phenolic group.
- Assertion: o-Phenol sulphonic acid on heating at 100 o C changes to p-phenol sulphonic acid Reason: Sulphonation of…
- List-I contains various reaction sequences and List-II contains different phenolic compounds. Match each entry in…
- What is the function of diethyl ether in the preparation of Grignard reagent?
- Total number of isomeric alcohols with formula C 4 H 10 O is
- By a proper choice of reagents, both symmetrical and unsymmetrical ethers can be prepared by Williamson synthesis which…
- Reagent Alcohol which is/are true about alcohol and R? Alcohol Reagent(R)
- The order of reactivity of the following alcohols towards conc. HCl is: (I) (II) (III) (IV)
- By a proper choice of reagents, both symmetrical and unsymmetrical ethers can be prepared by Williamson synthesis which…