Science (English Medium) इयत्ता १२ - CBSE Question Bank Solutions for Chemistry

Give reasons for the following:

CH₃NH₂ is more basis than C₆H₅NH₂.

Write the product(s) in the following reactions:

Write the product(s) in the following reaction:

Write the product(s) in the following reactions: 

Write the IUPAC name of the following :

How do you convert the Ethanal to Propanone

Write the structures of the main products in the following reactions :

Write the names and structures of the monomers of the following polymers:

(i) Terylene
(ii) Bakelite
(iii) Buna-S

Give reasons for the following observations :

NH₃ gas adsorbs more readily than N₂ gas on the surface of charcoal.

Give two examples of macromolecules that are chosen as drug targets

Account for the following:

Mn²⁺ is more stable than Fe²⁺ towards oxidation to +3 state.

Name the elements of 3d transition series that show maximum number of oxidation states. Why does this happen?

Which transition metal of 3d series has positive E° (M²⁺/M) value and why?

Out of Cr³⁺ and Mn³⁺, which is a stronger oxidising agent and why?

Write the principle behind the following methods of refining:

Hydraulic washing

Define the following term:

Pseudo first-order reaction

Define the following terms:

Half-life period of reaction (t_1/2).

 What is the difference between agonists and antagonists? 

Write structures of compounds A and B of the following reaction : 

Write structures of compounds A and B of the following reaction :