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

How will you bring about the following conversion?

Bromomethane to propanone

How will you bring about the following conversion?

1-Chlorobutane to n-octane

Explain why Grignard reagents should be prepared under anhydrous conditions?

Write the structure of the major organic product in the following reaction:

\[\ce{C6H5ONa + C2H5Cl ->}\]

What happens when bromobenzene is treated with Mg in the presence of dry ether?

What happens when methyl bromide is treated with sodium in the presence of dry ether?

How the following conversion can be carried out?

2-Chlorobutane to 3, 4-dimethylhexane

How the following conversion can be carried out?

Chloroethane to butane

Give the disproportionation reaction of H₃PO₃

What is the oxidation state of phosphorus in H₃PO₃?

What is the oxidation state of phosphorus in the following:

PCl₃

What is the oxidation state of phosphorus in the following:

Ca₃P₂

What is the oxidation state of phosphorus in the following:

Na₃PO₄

What is the oxidation state of phosphorus in the following:

POF₃

Write names and chemical formulae of monomers used in preparing Buna-N.

Write the reactions involved in the following reactions: Clemmensen reduction

Calculate the degree of dissociation (α) of acetic acid if its molar conductivity (Λ_m) is 39.05 S cm² mol⁻¹.

(Given \[\ce{\lambda^{\circ}_{(H^+)}}\] = 349.6 S cm² mol⁻¹ and \[\ce{\lambda^{\circ}_{(CH_3COO^-)}}\] = 40.95 S cm² mol⁻¹)

Write the product(s) in the following reactions

Write the mechanism (using curved arrow notation) of the following reaction :

Write the equation involved in the following reaction:

Etard reaction