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

Write the structures of the products when Butan-2-ol reacts with CrO₃

Write the structures of the products when Butan-2-ol reacts with SOCl₂

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

Write the structures of compounds A, B and C in the following reactions

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

Which one of the following is a monosaccharide: 

 starch, maltose, fructose, cellulose

Calculate the emf of the following cell at 25°C :

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?