DISTINCTION BETWEEN PAIRS ( CHEMICAL TEST ) TOPIC :- ALDEHYDE AND KETONE CLASS 12

DISTINCTION BETWEEN PAIRS ( CHEMICAL TEST ) TOPIC :-  ALDEHYDE AND KETONE CLASS 12   {ONE MARKS}

                                                         (CLASS IX, X , XI , XII , NEET and JEE)

1 FORMALDEHYDE AND ACETALDEHYDE  :-

Acetaldehyde gives yellow ppt  of iodoform  with an alkaline solution of iodine  

 

formaldehyde does not  gives yellow ppt  of  iodoform with an alkaline solution of iodine  

2 ACETALDEHYDE AND ACETONE  :-

 Acetaldehyde gives silver mirror with tollens reagent 

acetone does  not  gives silver mirror with tollens reagent 

3 BENZALDEHYDE AND ACETALDEHYDE :-

 Acetaldehyde gives yellow ppt  of  iodoform with an alkaline solution of iodine  

Benzaldehyde does not  gives yellow ppt  of  iodoform with an alkaline solution of iodine  

4 BENZALDEHYDE AND ACETOPHENONE :-

[A] Benzaldehyde forms silver mirror with ammoniacal  silver nitrate solution 

 

acetophenone does not  forms silver mirror with ammoniacal  silver nitrate solution 

[B] Acetophenone  gives yellow ppt  of  iodoform with an alkaline solution of iodine 

Benzaldehyde does not  gives yellow ppt  of  iodoform with an alkaline solution of iodine 

5 PANTAN-2-ONE AND PANTAN-3-ONE :-

Pantan-2-one gives yellow ppt  of  iodoform with an alkaline solution of iodine 

Pantan-3-one does not gives yellow ppt  of  iodoform with an alkaline solution of iodine 

6ACETOPHENONE AND BENZOPHENONE :-

acetophenone  gives yellow ppt  of  iodoform with an alkaline solution of iodine 

Benzophenone   gives yellow ppt  of  iodoform with an alkaline solution of iodine