Explanation

They have the general formula R−O−R′,

Where R and R′ represent the organyl groups.

Additional information

• R-CO-R: Ketones
• R-OH: Alcohols
• R-CHO: Aldehydes

Last updated question 17-02-2026

Explanation

Explanation

Explanation

The reaction quotient (Q) is the ratio of product and reactant concentrations at any time.

At equilibrium, this ratio becomes constant and is called the equilibrium constant (K).

It indicates the extent of a reaction at equilibrium.

Explanation

Explanation

Explanation

Johann Dobereiner, a German chemist, introduced the concept of 'triads' in 1817

 Law of Triads, Groups of three elements with similar properties; middle element's atomic mass is average of others.

Explanation

Picric acid is also called 2,4,6-trinitrophenol.

It has three nitro (–NO₂) groups attached to a benzene ring with one hydroxyl (–OH) group.

     NO2

      |

 NO2—C6H2—OH

      |

     NO2

Explanation

• Organic compounds (like hydrocarbons, sugars, fats) are highly combustible.
• This is due to their high carbon content, which releases energy when burned.
• Carbon forms stable bonds that release heat and energy during combustion.

Last verified on 10-02-2026

Explanation

• The ozone layer absorbs and blocks the majority of the Sun’s harmful ultraviolet (UV) radiation.
• This protection helps prevent skin cancer, cataracts, and damage to ecosystems.

Last verified on 09-02-2026