Institute of Technology
B.Tech (First Year)
Chemistry (CY101)
Assignment 4
Green Chemistry & Advances in Chemistry
Place of submission – A110
All the questions are compulsory.
1.
What is Green Chemistry?
2.
What are fullerenes? Discuss their structure.
3.
An example of green chemistry is: a.
Recycled carpet b.
A product made on Earth Day c.
A sublimation reaction d.
Bio-plastics
4.
List out the properties and uses fullerenes.
5.
What is the difference between environmental science and green chemistry?
6.
Why is C
60
also known a Buckminster Fullerene or bucky ball?
7.
What are crown ethers? Give examples.
8.
Green chemistry is more expensive than traditional chemistry? True or False?
9.
Define phase transfer catalyst with example.
10.
Draw the structure of Dibenzo[18]crown-6, dicyclohexyl-[18]-crown-6 and monobenzo[18]crown-6, [18] Crown-6, [15] Crown-5, and [21] Crown-7
11.
Which of the following are among the 12 Principles of Green Chemistry? Choose the right answer. a.
Design commercially viable products b.
Use only new solvents c.
Use catalysts, not stoichiometric reagents d.
Re-use waste
12.
What are the advantages of phase transfer catalyst?
13.
Explain the principles of green chemistry.
14.
In which condition, phase transfer catalysts are preferred?
15.
What are Calixarenes?
16.
What is the mechanism of phase transfer catalyst?
17.
What is the meaning of ‘n’ in Calix [n] arene? What may be the values for n in the formula?
18.
What is the ultimate aim of green chemistry? Choose the right answer. a.
Design chemical products and process that maximize profits b.
Design safer chemical products and processes that reduce or eliminate the use and generation of hazardous substances c.
Design chemical products and processes that work most efficiently d.
Utilize non-renewable energy
19.
Draw the structure of Calix [4] arene, Calix [6] arene, Calix [8] arene.
20.
List out the applications of Calixarenes.
21.
What are Cryptands and Cryptates? Draw the structure of cryptand [5.5.5], cryptand [6.4.6]
Cryptand[1.1.1] and cryptand [2.2.1].
22.
Business benefits of green chemistry include: a.
Reduced costs associated with waste treatment and disposal
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b.
Innovating 'greener' products to attract customers c.
Greater compliance with environmental legislation d.
All of the above
23.
Benzene, a _______ substance, is an important industrial solvent used in the production of pharmaceuticals, plastics, and dyes? a.
Odorless b.
Non-flammable c.
Biodegradable d.
Carcinogenic
24.
By which name Calixarene chemistry is famous?
25.
What are the advantages of cryptand and crypatates? x---------------------------x-------------------------------x
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