Question

Large scale storage of grains is done in _____________________
A. Plastic bags
B. Silos
C. Pouches
D. None of these

Answer 1

Hint:
 Grain is a small, dried seed, with or without an enclosed layer, cultivated for human or animal utilization. Especially, the term applies to the seeds of the grass family, including the wheat, rice and corn; the seeds of non-edible crops are often addressed to as grains. Upon harvesting, dry grains are much more reliable than that of other food staples.

Complete answer:
A silo (from Greek term pit) is a framework for preserving raw material. In agricultural production, silos are being used to store grain (lifts) or processed feed defined as silage. Silos are primarily used for mass storage of grain, coal, concrete, carbon, woody biomass, food items and sawdust. Currently, three kinds of silos are extensively used: tower silos, bunker silos, as well as bag silos. Most promising storage silos are cylindrical with a metal frame. These are identical to a castle and could be constructed of aluminium, stainless steel, strengthened concrete, wood, plastic, carbon fibre, etc. Broadly speaking, these are designed to measure, taking into consideration the commodity to be transported, the environmental influences or the nature of the item. They can indeed be shut or unlocked, but the inside coating is smooth and finished with specially engineered. The key operating part of the silo unloader is balanced in the silo by a steel cable on a roller which is installed just at the centre position of the silo dome.

So, the correct answer is (B).

Additional Information:
The benefit of steel silos resides within the filled surface of the field. This solution requires less floor space, which would be vital if space is not accessible or if the price is high, as in ports. Another benefit is just how convenient it is to achieve high storability for grain, by monitoring temperatures, insects, moulding, birds that could lead to massive financial damage in long-term storage centres. Both loading and unloading could be completely automated by using the SCADA system at such a cheaper cost. Another benefit is its lower costs, while this part is explicitly constructed for such a reason and weighs as little as a warehouse. Ultimately, we get the argument that this is significantly cheaper, and that this is potentially the greatest benefit compared to warehouses.

Note:
Developing nations predominantly require silos to preserve food grains efficiently for a prolonged period of time. Intriguingly, it was not a new concept for India, as history proves the existence of such systems throughout the Indian sub - continent centuries ago, it’s most prominent being those in the Indus civilization. The silos can be made from steel or cement. Metal ones are far more costly, but they're simpler to install. They're both durable and keep the food grain secure for a longer period.