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

Arrange the following in the increasing order of their boiling points: CH₃CHO, CH₃COOH, CH₃CH₂OH

Name the reagents used in the following reactions:

Illustrate the following reaction giving suitable example in each case:Gabriel phthalimide synthesis

Write the main product(s) in each of the following reactions:

Name the reagents used in the following reactions:

How do you convert the following : Propan-2-ol to 2-methylpropan-2-ol

An aromatic compound 'A' of molecular formula C₇H₇ON undergoes a series of reactions as shown below. Write the structures of A, B, C, D and E in the following reactions :

How do you convert the following: C₆H₅CONH₂ to C₆H₅NH₂

How do you convert the following: Ethanenitrile to ethanamine

Write the structures of the main products when acetone (CH₃ − CO − CH₃) reacts with the following reagents :

CH₃MgBr and then H₃O⁺

Write the names of monomers used for getting the following polymer:

Neoprene

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

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

Define the following terms : Molarity

Write the principle behind the froth floatation process. What is the role of collectors in this process?

Gold (atomic radius = 0.144 nm) crystallises in a face-centred unit cell. What is the length of a side of the cell?

The decomposition of NH₃ on platinum surface is zero order reaction. What are the rates of production of N₂ and H₂ if k = 2.5 × 10⁻⁴ mol⁻¹ L s⁻¹?

The reaction between A and B is first order with respect to A and zero order with respect to B. Fill in the blanks in the following table:

What is an adsorption isotherm?

Describe Freundlich adsorption isotherm.