Download App

Aldehydes, Ketones and Carboxylic Acids — Chemistry STD 12 Science — Question

Gujarat BoardEnglish MediumSTD 12 ScienceChemistryAldehydes, Ketones and Carboxylic Acids2 Marks
Question
How the benzaldehyde and acetaldehyde are differentiated?
✓

Answer

(i) Benzaldehyde $\left( C _6 H _5 CHO \right)$ does not gives iodoform test while acetaldehyde $\left( CH _3 CHO \right)$ gives iodoform test.
(ii) $C _6 H _5 CHO$ does not reacts with Fehling solution while Fehling solution is reduced by $CH _3 CHO$.

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Explore more

More "2 Marks Questions" from Aldehydes, Ketones and Carboxylic Acids→Aldehydes, Ketones and Carboxylic Acids — all question types→Chemistry STD 12 Science question papers→Gujarat Board STD 12 Science question papers→Gujarat Board question paper generator→

Similar questions

Note: In the following questions a statement of assertion followed by a statement of reason is given. Choose the correct answer out of the following choices.
Assertion: Copper sulphate can be stored in zinc vessel.
Reason: Zinc is less reactive than copper.
→
Explain how vacancies are introduced in an ionic solid when a cation of higher valence is added as an impurity in it.
→
Note: In the following questions a statement of assertion followed by a statement of reason is given. Choose the correct answer out of the following choices.
Assertion: Zirconium can be purificed by Van Arkel method.
Reason: $ZrI_4$ is volatile and decomposes at $1800K.$
→
What is Concentration of Solution?
Write down different Types of Units of Concentration?
→
Which alkyl halide from the following pairs would you expect to react more rapidly by an $S_N2$ mechanism? Explain your answer.
$\text{CH}_3\text{CH}\text{CH}_2\text{CH}_2\text{Br}\ \text{or}\ \text{CH}_3\text{CH}_2\text{CH}\text{CH}_2\text{Br}\\\ \ \ \ \ \ \ \ \mid\ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \mid\\\ \ \ \ \ \ \ \ \text{CH}_3\ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \text{CH}_3$
→
How can you separate alumina from silica in a bauxite ore associated with silica? Give equations, if any.
→
Match the the compounds given in Column I with the effects given in Column II.
  Column I   Column II
$(i)$ Chloramphenicol $(a)$ Malaria
$(ii)$ Thyroxine $(b)$ Anaesthetic
$(iii)$ Chloroquine $(c)$ Typhoid fever
$(iv)$ Chloroform $(d)$ Goiter
    $(e)$ Blood substituent
→
What is the basic structural difference between starch and cellulose?
→
Account for the following:
$H_3PO_2$ and $H_3PO_3$ act as good reducing agents while $H_3PO_4$ does not.
→
How would you account for the following:
Cobalt(II) is stable in aqueous solution but in the presence of complexing reagents it is easily oxidised.
→