Science (English Medium) Class 12 - CBSE Question Bank Solutions for Chemistry

Explain the following term with suitable example cationic detergents.

Explain the Following Term with Suitable Examples.

Cationic Detergents

Explain the following term with a suitable example:

Cationic detergents

Explain the following term with suitable example.

Cationic detergents

Explain the following term with suitable example:

cationic detergents

Suggest the most important type of intermolecular attractive interaction in the following pair.

n-hexane and n-octane

Suggest the most important type of intermolecular attractive interaction in the following pair:

I₂ and CCl₄

Suggest the most important type of intermolecular attractive interaction in the following pair.

NaClO₄ and water

Suggest the most important type of intermolecular attractive interaction in the following pair.

Methanol and acetone

How much electricity in terms of Faraday is required to produce 40.0 g of Al from molten Al₂O₃?

(Given: Molar mass of Aluminium is 27 g mol⁻¹.)

Silver crystallises in FCC structure. If density of silver is 10.51 gcm^-3, calculate the volume of unit cell. [Atomic mass of slive (Ag) = 108 gm^-1]

Name the method used for the refining of Nickel metal.

Explain the mechanism of the following reaction:

Give one example each for fibrous protein and globular protein.

For the complex [Fe(H₂O)₆]+3, write the hybridisation, magnetic character and spin of the complex. (At, number : Fe = 26)

Give reasons for the following:

Aniline does not undergo Friedel- Crafts reaction.

An element with density 10 g cm⁻³ forms a cubic unit cell with edge length of 3 × 10⁻⁸ cm. What is the nature of the cubic unit cell if the atomic mass of the element is 81 g mol⁻¹?

Name the method used for the refining of zirconium.

What is the difference between native protein and denatured protein?

An element crystallizes in a f.c.c. lattice with a cell edge of 250 pm. Calculate the density if 300 g of this element contains 2 × 10²⁴ atoms.