Manufacturing Industries Test - 18

Correct answer is :

Fabrics.

Spinning is a major part of the textile industry. It is part of the textile manufacturing process where three types of fiber are converted into yarn, then fabrics, which undergo finishing processes such as bleaching to become textiles. The textiles are then fabricated into clothes or other products. There are three industrial processes available to spin yarn, and a handicraft community who use hand spinning techniques. 

Smelting is nothing but extraction of aluminium from its ore. Aluminium smelting plant’s location depends on availability of raw material and good supply of electricity. 

• Jute is an example of biodegradable component and hence Jute has gained opportunity.
  
• Instead of using disposable commodities like plastic bags we can use jute bags to carry things which reduces waste pollution of the environment.
  

• When plants and animal-based products are used as raw materials, it is called agro-based industry. 
  
• Cotton textile, jute textile and sugar are examples of such agro-based industries.
  

Living organisms that respond to the change in environment are called bioindicators. Lichens are useful bioindicators for air and water pollution specially for sulphur dioxide pollution. They are also useful in the detection of toxic elemental pollutants and radioactive metals.

Though industrial development in India caused enormous improvement in India’s economy, it also proved disastrous to the environment.

Industries caused air pollution due to the smoke released from factories.

They also caused water pollution due to the draining of industrial wastes into water bodies causing hectic problems to marine and human life.

Main pollution is caused by chemical industries.

A.       Availability of Raw Materials.

The significance of raw materials in manufacturing industry is so fundamental that it needs no emphasizing. Indeed, the location of industrial enterprises is sometimes determined simply by location of the raw materials. Modern industry is so complex that a wide range of raw materials is necessary for its growth.

 

Temperature is an important factor to consider when assessing water quality. Water temperature can affect the metabolic rates and biological activity of aquatic organisms. Water temperature should be between 22-25 degree celsius.  But the water temperature should preferably be less than 25 degree celsius because in this temperature aquatic life flourish.

SAIL is operating and having its owns 5 integrated steel plants at Bhilai, Rourkela, Durgapur, Bokaro and Burnpur. Also, 3 special steel plants at Salem, Durgapur and Bhadravathi. Whereas Katni is also known as the city of lime because it is rich in reserve of limestone. Above details show that Katni is not connected with steel production. So, option D is correct. 

BOD stands for Biological Oxygen Demand. It is the amount of dissolved oxygen needed by aerobic biological organisms to break down organic matter present in a given water sample. It is mostly expressed in milligrams of oxygen consumed per litre of sample.