Q. Which of the following reactions would give propanal?

Aldehydes Ketones and Carboxylic Acids Report Error

Ethyl propanoate DBAH (diisobutyl aluminium hydride). at , followed by hydrolysis.

Propyl propanoate + DIBAL-H/

Ethyl cyanide + DBAH

Propanoyl chloride + LBAH

Solution:

Correct answer is (a) Ethyl propanoate DBAH (diisobutyl aluminium hydride). at , followed by hydrolysis.Correct answer is (b) Propyl propanoate + DIBAL-H/ Correct answer is (c) Ethyl cyanide + DBAHCorrect answer is (d) Propanoyl chloride + LBAH

Questions from Aldehydes Ketones and Carboxylic Acids

1. By which one of the following reaction ketones cannot be prepared?

KEAM 2015

2. reacts with to give a compound, which gives the iodoform test, then find out the structure A

AIIMS 2019

3. Toluene by Etard's reaction gives

UP CPMT 2012

4. The reduction of benzoyl chloride with gives

UP CPMT 2010

5. Acetaldehyde can be prepared by

UP CPMT 2011

Chemistry Most Viewed Questions

1. If for a certain reaction is at , the value of (in for which the same reaction will be spontaneous at the same temperature is

NEET 2020 Thermodynamics

2. If of a non-electrolyte solute is dissolved in of n-octane to reduce its vapour pressure to , the molar mass (in of the solute is [Given that molar mass of n-octane is

NEET 2020 Solutions

3. At standard conditions, if the change in the enthalpy for the following reaction is Given that bond energy of and is and , respectively, what is the bond energy (in of ?

NEET 2020 Thermodynamics

4. An organic compound contains (by wt.) carbon and remaining percentage of hydrogen. The right option for the empirical formula of this compound is: [Atomic wt. of is is ]

NEET 2021 Some Basic Concepts of Chemistry

5. The density of 2 M aqueous solution of NaOH is 1.28 g/cm. The molality of the solution is
[Given that molecular mass of NaOH = 40 g mol]

NEET 2019 Some Basic Concepts of Chemistry

6. Given below are half cell reactions:

Will the permanganate ion, liberate from water in the presence of an acid ?

NEET 2022 The d-and f-Block Elements

7. In water saturated air the mole fraction of water vapour is . If the total pressure of the saturated air is , the partial pressure of dry air is :

NEET 2019 Solutions

8. Following limiting molar conductivities are given as

for will be-

NEET 2019 Electrochemistry

9. One atom of an element weighs . Its atomic mass is

Manipal 2009 Some Basic Concepts of Chemistry

10. In the following reaction,
A,
the number of sigma(s) bonds present in the product A is :-

NEET 2019 Hydrocarbons