Advertisements
Advertisements
प्रश्न
Explain prevention of waste or by products which is one of the principles of green chemistry.
Advertisements
उत्तर
Prevention of waste or by products:
- According to this principle of green chemistry, priority is given for the prevention of waste rather than cleaning up and treating waste after it has been generated.
- Illustration: To develop zero waste technology (ZWT).
As per ZWT, in chemical synthesis, the waste products should be zero or minimum. - It also aims to use the waste product of one system as the raw material for other systems.
For example:
a. Bottom ash of thermal power station can be used as a raw material for cement and brick industry.
b. Effluent coming out from cleansing of machinery parts may be used as coolant water in a thermal power station.
APPEARS IN
संबंधित प्रश्न
Choose the most correct option.
Which of the following is ϒ-isomer of BHC?
Write the formula to calculate the % atom economy.
Explain any three principles of green chemistry.
Answer the following:
Explain the atom economy with a suitable example.
Answer the following
How will you illustrate the principle, minimization of steps?
Answer the following
Give two examples of catalysts.
Bottom ash of thermal power stations can be used as raw material for cement and brick industry. This example illustrates which of the following principle of green chemistry?
According to less hazardous chemical synthesis point of view, instead of harmful DDT now a days _______ is used as insecticides.
In green technology developed by Drath and Frost, adipic acid is enzymatically synthesized from _______.
Mention the total number of principles of green chemistry.
Name the γ-isomer of Benzene hexachloride.
Define atom economy.
____________ can be categorised as a green solvent.
In the manufacture of phenol from isopropyl benzene, the important by-product obtained is ____________.
Drath and Frost developed a green technology for the synthesis of ____________.
The formula for percentage atom economy is:
`("Formula weight of the desired product")/("'X'") xx 100`
Here, 'X' is ____________.
Mandelonitrile is obtained by the reaction between hydrogen cyanide and ______.
The international plastic recycle mark with 'Number 1' is given to ____________.
Which of the following is recycled to prepare foam packaging and light switchplates?
Which of the following is recycled to make trash-can liners?
γ-isomer of BHC is called as ____________.
All the following statements are CORRECT, EXCEPT:
Define the role of safer chemistry in accident prevention.
How many principles does green chemistry have?
