The Railways first used glass tumblers to serve tea in trains which were replaced by kulhads and disposable plastic cups. Now they are using paper cups.
A. Tumbler of which material is the best to serve tea keeping the environment and hygiene in mind?
B. What are the disadvantagess of using kulhads?
C. What are the disadvantages of using disposable plastic cups?
Answers
A.paper cups are the best for serving tea as they are biodegradable.
B. the main disadvantage of using kulhad was that it almost removed the top soil due to its extensive production.
C. the main disadvantage of using disposable plastic cup is that plastic is a non biodegradable for the bacteria and it causes pollution.
A. tumbler is made up of costly material and they will keep enviroment clean and dont make pollution .
B. kulhads they were not comfortable to drink tea and they make pollutions
C. plastic cups:
* plastic dont mix with soil
* plastic release carbonmonoxide [co] into the air which cause to melt of ice in north plole and south pole starts melting
* plastic will release co in air causes declination of ozone layer