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

For producing amines, the reaction of nitro compounds with iron scrap is preferred because:

Quaternary ammonium salt is formed:

Hydrolysis of starch yields ____________.

The space lattice of graphite is ____________.

Coordination numbers of Zn²⁺ and S^2– in the crystal structure of wurtzite are ____________.

In face-centered cubic lattice, a unit cell is shared equally by how many unit cells?

The total number of tetrahedral voids in the face-centered unit cell is ______.

Which of the following factor do not affect the solubility of a solid solute in liquid?

When a solid solute is added to the solvent, some solute dissolves and its concentration increases in solution. This process is known as ___________. Some solute particles in the solution collide with the solid solute particles and get separated out of the solution. This process is known as __________.

At the state of dynamic equilibrium, for solute + solvent solution.

Which of the following statements is incorrect?

On dissolving sugar in water at room temperature solution feels cool to touch. Under which of the following cases dissolution of sugar will be most rapid?

A beaker contains a solution of the substance ‘A’. Precipitation of substance ‘A’ takes place when a small amount of ‘A’ is added to the solution. The solution is ______.

Maximum amount of a solid solute that can be dissolved in a specified amount of a given liquid solvent does not depend upon ______.

The catalyst used in the manufacture of HNO₃ by Ostwald’s process is ____________.

Concentrated nitric acid, upon long standing, turns yellow brown due to the formation of ____________.

Alkenes convert into alcohols by ____________.

Which of the following reacts with NaOH to give alcohol?

Commercially carboxylic acids are reduced to alcohols by converting them to the ______.

Which among the following is the simplest sugar?