The organic substances which decompose slowly are

Assertion (A) Naphthalene, anthracene, benzoic acid, camphor and other such substances which sublime can be purified from other substances by sublimation. Reason (R ) There are certain substances which decompose when sublimed under ordinary pressure.

A substance which decomposes below its boiling point can be best purified by

A substance which decomposes at or below its boiling point cannot be purified by:

The simple inorganic substances released into the environment by the decomposers are then reused by the.

" The half life of a substance that decomposes with zero order reaction is "10" min.The time in seconds needed for it to decompose to an extent of 75 % is

The half life of a substance that decomposes with zero order reaction is "10" min. The time in seconds needed for it to decompose to an extent of 75 % is

substance which decomposes below its boiling Point can be best purified by 4

50% of the amount of a radioactive substance decomposes in 5 years. The time required for the decomposition of 99.9% of the substance will be