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

Why is CH2 = CH -CH2-CL more easily hydrolysed than CH₃ - CH₂ - CH₂ - CL ? 

 Write the reaction that occurs at anode on electrolysis of concentrated 2 4 H SO using platinum electrodes. 

Predict the main product of the following reactions:
\[\ce{CHO + CH_3CHO->[dil NaOH]}\]

 Write the main product formed when propanal reacts with the following reagents: 
(ii) Dilute NaOH 
`CH_3CH_2CHO + NaOH(dil)-> `

Give a reason for the following: 

 E° value for (Mn²⁺|Mn) is negative whereas for  (Cu²⁺|Cu) is positive. 

Account for the following : 
Acidic character decreases from N₂O₃ to Bi₂O₃ in group 15.

How will you convert the following:
[Ag(CN)₂]⁻ to Ag

Give reasons for the following:
E⁰ value for (Mn³⁺|Mn²⁺) is highly positive than that for (Cr³⁺|Cr²⁺) couple.

Electrochemistry deals with the production of electricity from ____________.

Rate of reaction for the combustion of propane is equal to:

\[\ce{C3H8_{(g)} + 5O2_{(g)} -> 3CO2_{(g)} + 4H2O_{(g)}}\]

What is the order of a reaction which has a rate expression; Rate = `"k"["A"]^(3/2)["B"]^1`?

Molecularity of a reaction _____________.

Which of the following statement is true for order of a reaction?

The substance that gets adsorbed on the surface of the solid is called ____________.

Water vapours are adsorbed by:

Adsorption is accompanied by:

The phenomenon in which adsorption and absorption take place simultaneously is called ____________.

Metals which occur in their native state in nature:

Metal which is found in free state is:

Which among the following statement is correct?