Questions:
1. What was rubber chiefly used for?
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2. What is rubber really?
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3. What kind of a climate do rubber trees need?
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Answers
Answer:
1 ans - The main function of rubber initially was to rub out pencil marks. What is presently known as an Eraser was initially called Rubber
answer
1) The main function of rubber initially was to rub out pencil marks. What is presently known as an Eraser was initially called Rubber.
2) Natural rubber, also called India rubber, latex, Amazonian rubber, caucho or caoutchouc, as initially produced, consists of polymers of the organic compound isoprene, with minor impurities of other organic compounds, plus water. Thailand and Indonesia are two of the leading rubber producers.
3) Climate:
Rubber is a tropical tree. It requires high temperature throughout the year – ranging between 20°-35°C or average monthly mean of 27°C. Less than 20°C temperature is detrimental. Similarly, rubber also requires heavy rainfall.