Questions

Secondary pollutants include ozone, which is formed when hydrocarbons (HC) and nitrogen oxides (NOx) combine in the presence of sunlight.

Whereas Primary pollutant are those pollutants that are directly emitted from their sources, like CO2, CO, SO2 as these gases are directly emitted form burning of fossil fuels.

Acid rain, which is formed when sulfur dioxide or nitrogen oxides react with water, sulfuric acid etc.

Hence, Acidrain is a secondary air pollutant.

A computer program is a set of instructions i.e algorithm that are to be executed to complete a task.

The compound with the molecular formula P4O10 is called Phosphorus pentoxide or tetraphosphorous decoxide. It is an anhydride of the Phosphoric acid.

He cannot issue an ordinance , when both the Houses of Parliament are in session. Every ordinance issued by the President should be laid before both Houses of Parliament, within six weeks of re-assembly of Parliament . The president may also withdraw an ordinance at any time he likes.

Windows NT uses protection mechanism called rings provides by the process to implement separation between the user mode and kernel mode.