Introduction to Ethers

Q.

Is Glucose acidic or basic?

Q.

The order of dehydration of alcohols leading to the formation of ethers follows the sequence:

1. Primary>tertiary>secondary

2. Tertiary>secondary>primary

3. Secondary>primary>tertiary

4. Primary>secondary>tertiary

Q. 18. Convert ethanol to butan -2-ol

Q. What is the IUPAC name of Methyl n-propyl ketone​?

1. Pentan-2-one
2. Butan-2-one
3. Pentan-3-one
4. 2-Methylpentan-2-one

Q. Why boiling point of ethoxyethane is less than n pentane?

Q. 9. Structure of 1-methyl ethanol

Q. The boiling point of phenols are higher than the hydrocarbons of comparable masses due to:

1. more polarising power
2. presence of hydrogen bonding
3. resonance stabilization
4. acidic character

Q. 37.Reaction of ethyl formate with excess of CH3MgI followed by hydrolysis gives: 1) n propyl alcohol 2 )isopropyl alcohol 3)acetaldehyde 4)acetone

Q. Preparation of ethers by acid catalysed dehydration of secondary and tertiary alcohol is not a suitable method. give reason.

Q. The anhydride of Nitric acid is

1. 
2. 
3. 
4. 

Q. When propan-1-ol is dehydrated, the productobtained is again hydrated and further oxidisedtoform a compound. The compound is(1) Propargyl alcohol(2) Propanone(3) Ethylene -1, 2-diol(4) Propane-1, 2-diol

Q. 31.Account for the rapid rate of ethanolysis of CH3OCH2Cl with respect to CH3CH2Cl although it is a primary halide.

Q. The incorrect IUPAC name is

1. 
   
2. 
3. 
4. 

Q. The reagent that gives an orange colouration with acetaldehyde is:

1. 
   $N{H}_{2}OH$
2. 
   $NaHS{O}_3$
3. 
   $I_2$
4. 
   $2,4-DNP$

Q. What is the formula of calamine?

Q. what is the IUPAC name of Benzyl ethyl ether ?

Q.

Which of the following is true.

1.the two tautomeric formd differ in stability.

2.tautomers are in dynamic equilibrium with each other.

3. Tautomers are interconvertible.

4. Tautomerism is a reversible intramolecular change.

So all of them are true. But it is given that 3rd option is wrong. When I seen explanation of given answer it is given that 3rd option is correct. So plz confirm about it and explain how they are interconvertible with example

Q. Which of the following is/are correctly named according to IUPAC?

1. 
   2-Hydroxy-1-phenylpropan-1-one
2. 
   4-Hydroxypent-1-en-3-one
3. 
   4-Hydroxypent-1-en-1-one
4. 
   2-Bromo-4-hydroxy-4-methyl-3-oxocyclobutane-1-carbonitrile

Q. Which of the following is not an example of unsymmetrical or mixed ether?

1. $C_6{H}_5-O-C{H}_2-C_6{H}_5$
2. $C_6{H}_5-O-C_6{H}_5$
3. $C_6{H}_5-O-C{H}_3$
4. $C_6{H}_5-O-C{H}_{2}Cl$

Q.

The IUPAC name of

$C{H}_3-\underset{C{H}_3}{\underset{|}{CH}}-\underset{C{H}_3}{\underset{|}{C}}-\underset{CHO}{\underset{|}{CH}}-C{H}_2-C{H}_2-C{H}_3$ is?

1. , 2-Dimethy(propyl)pentanal

2. 3, 4-Dimethy-2-propylpentanal

3. 4-Formyl-2, 3-dimethylheptane

4. None of the above

Q. Can ketones be prepared by Jones reagent?

Q. Hydrolysis of amides gives the corresponding:

1. Carboxylic acid
2. Alkane
3. Alcohol
4. Amino acid

Q. What are ethers? How are they classified?

Q. Williamson's synthesis is used to prepare:

1. diethyl ether
2. PVC
3. Bakelite
4. ethyl alcohol

Q. Why cyclohexanone forms cyanohydrin in good yield but 2, 2, 6-trimethylcyclohexanone does not?

Q. Boiling points of carbonyl compounds are higher than those of alkanes due to:

1. hydrogen bonding
2. dipole-dipole interactions
3. van der Waals' forces
4. all of the above

Q. Unsymmetrical ethers on hydrolysis gives:

1. single product
2. double product
3. depends on reaction condition
4. single product only with heavy water

Q. Compound which has the highest dipole moment is
[0.77 Mark]

1. $C{H}_{3}F$
2. $C{H}_{3}Br$
3. $C{H}_{3}Cl$
4. $C{H}_{3}I$

Q. An example of a compound with the functional group ${}^{\prime }-O{-}^{\prime }$ is:

1. Acetic acid
2. Methyl alcohol
3. Diethyl ether
4. Acetone

Q. Give any three methods of preparation diethyl ether.