Questions

Sewage treatment generally involves three stages, called primary, secondary and tertiary treatment.

Primary treatment consists of temporarily holding the sewage in a quiescent basin where heavy solids can settle to the bottom while oil, grease and lighter solids float to the surface. This removes material that will either float or readily settle out by gravity. It includes the physical processes of screening, comminution, grit removal, and sedimentation.

Secondary treatment removes the soluble organic matter that escapes primary treatment. It also removes more of the suspended solids. Removal is usually accomplished by biological processes in which microbes consume the organic impurities as food, converting them into carbon dioxide, water, and energy for their own growth and reproduction.

Tertiary treatment includes removal of nutrients such as phosphorus and nitrogen and practically all suspended and organic matter from waste water.

This question can be best solved by the elimination technique. 'was delayed budget allocation', 'was delayed industry which' and 'was delayed debating over' do not make sense; hence P, Q and S can't follow the first segment. This eliminates options 1, 2 and 4. Option 5 places S after R which makes the resultant segment as 'lawmakers were busy industry' which is illogical; hence option 5 can also be eliminated. Hence, the correct sequence is RQPS.

The supply curve slopes upward because for reflecting the higher price needed to cover the higher marginal cost of production. 

The Lok Sabha Elections 2019 that are starting from April 11 of 2019 in India is 17th Lok Sabha Elections.

Climatology is a study of climate which is subspecialty of environmental science studies.

A Portfolio is a collection of projects or programs and other work that are grouped together to facilitate effective management of that work to meet strategic business objectives.