Science (English Medium) इयत्ता १२ - CBSE Important Questions

Give a simple chemical test to distinguish between the following pair of compounds :

CH₃CH₂CHO and CH₃CH₂COCH₃

Describe the following:

Cannizzaro reaction

How do you convert the following:

Acetic acid to Methane

Write the product formed when p-nitro chlorobenzene is heated with aqueous  NaOH at 443K followed by acidification? 

Write chemical equation of the following reaction : 
Acetophenone is treated with `("Zn"("Hg"))/"Conc.HCl"`.

Write chemical equations of the following reaction :
Benzoyl chloride is hydrogenated in the presence of `"Pd"/(BaSO_4)`

Write a chemical equation for the following reaction: 
Propanone is treated with dilute Ba( OH)₂.

Arrange the following in increasing order of their basic strength in aqueous solution:

\[\ce{CH3NH2, (CH3)3N, (CH3)2NH}\]

Arrange the following in increasing order of their basic strength :

C₆H₅ – NH₂, C₆H₅ – CH₂ – NH₂, C₆H₅ – NH – CH₃

Arrange the following in increasing order of their basic strength :

How do you convert the following: C₆H₅CONH₂ to C₆H₅NH₂

How do you convert the following: Ethanenitrile to ethanamine

Write the chemical equations involved when aniline is treated with the following reagents:

Br₂ water

Write the chemical equations involved when aniline is treated with the following reagents:

CHCI₃ + KOH

Write the chemical equations involved when aniline is treated with the following reagents: HCI

Give the structures of A, B and C in the following reactions :

Give the structures of A, B and C in the following reactions :

How will you convert the following?

Aniline into N−phenylethanamide

Account for the following:

Arrange the following compounds in the increasing order of their basic strength in aqueous solution: CH₃NH₂,(CH₃)₃N,(CH₃)₂NH

A compound 'A' on reduction with iron scrap and hydrochloric acid gives compound 'B' with molecular formula C₆H₇N. Compound 'B' on reaction with CHCl₃ and alcoholic KOH produces an obnoxious smell of carbylamine due to the formation of 'C'. Identify 'A', 'B' and 'C' and write the chemical reactions involved.