Name the following:
1. Weedicides:
2. Chemical preservatives:
3. Thermoplastics:
4. Gaseous fuels:
5. Products of destructive distillation of coal:
6. Traditional irrigation methods:
Answers
Answer:
1)Weedicides:Weedicides are the chemicals which are sprayed over the fields to get rid of weeds.
2) Chemical preservatives:Chemical food preservatives are substances which, under certain conditions, either delay the growth of microorganisms without necessarily destroying them or prevent deterioration of quality during manufacture and distribution.
3)Thermoplastics:Thermoplastics are defined as polymers that can be melted and recast almost indefinitely. They are molten when heated and harden upon cooling. When frozen, however, a thermoplastic becomes glass-like and subject to fracture.
4)Gaseous fuels:Gaseous fuels are hydrocarbons, hydrogen and carbon monoxide mixtures present in gaseous state which forms the basis of potential heat energy or light energy that can be readily disseminated by means of pipes from the origin to the place of consumption. From: Fuel, 2016.
5)Products of destructive distillation of coal:The process breaks up or 'cracks' large molecules. Coke, coal gas, gas carbon, coal tar, ammonia liquor, and coal oil are examples of commercial products historically produced by the destructive distillation of coal
6)Traditional irrigation methods:Traditional Irrigation Methods
Also called the pulley system, it involves pulling up water from a well or other such source to irrigate the land. This is a time consuming and labour intensive process, but it is very cost-efficient. Also, using a moat avoids wastage of water.
Explanation:
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