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प्रश्न
Answer the following
Give two examples of catalysts.
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उत्तर
i. In the contact process of industrial production of sulfuric acid; sulphur dioxide and oxygen from the air react reversibly over a solid catalyst of platinised asbestos.
ii. Hydrogenation with nickel as a catalyst is used to convert inedible oils into solid fat for the production of margarine.
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संबंधित प्रश्न
Choose the most correct option.
Which of the following is ϒ-isomer of BHC?
Write the formula to calculate the % atom economy.
Name the γ-isomer of BHC.
How will you illustrate the use of a safer solvent and auxiliaries?
Answer the following
Define catalyst.
Explain any three principles of green chemistry.
Answer the following
How will you illustrate the principle, minimization of steps?
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?
In green technology developed by Drath and Frost, adipic acid is enzymatically synthesized from _______.
Mention the total number of principles of green chemistry.
Write one example of safer solvent and hazardous solvent.
Explain prevention of waste or by products which is one of the principles of green chemistry.
____________ can be categorised as a green solvent.
In the manufacture of phenol from isopropyl benzene, the important by-product obtained is ____________.
Mandelonitrile is obtained by the reaction between hydrogen cyanide and ______.
γ-isomer of BHC is called as ____________.
All the following statements are CORRECT, EXCEPT:
Identify the use of polyethylene terephthalate.
Identify the polymer used in making floor tiles.
Calculate the atom economy of the following:
(At mass of C = 12, H = 1, 0 = 16)
\[\ce{CH3 - CH2 - OH ->[\Delta] CH2 = CH2 + H2O}\]
How many principles does green chemistry have?
If salicylic acid (138 u) reacts with acetic anhydride (102 u) to from aspirin (180 u) calculate % atom economy.
