1 |
How many countries of world produce rubber ? |
10 countries
28countries
50countries
100countries
|
2 |
The continent of Asia produces world's: |
91.5 percent rubber
50percent rubber
Only 20 percent rubber
25percent rubber
|
3 |
Annual rubber production of the world is about: |
More than 100 million tons
11.966 million metric tons
50million metric tons
200million metric tons
|
4 |
In the world, largest producer of rubber is: |
Thailand
Indonesia
Malaysia
India
|
5 |
From experimental rubber plantation of on hectare: |
3,335 kg rubber production is possible
1000kg rubber production is possible
500kg rubber production is possible
5000kg rubber production is possible
|
6 |
In one hectare, how many rubber plants can be planted ? |
250 plants
100plants
500plants
1000plants
|
7 |
In one year, for how many days, rubber plant producer rubber ? |
100 days
50 days
200-300 days
throughout the year
|
8 |
Per rubber plant, annual rubber production is about: |
20 pounds
4-5 pounds
50 pounds
Very small amount
|
9 |
Natural rubber plant remain productive: |
For 10 years
For 20 years
For 40 years
For 25 years
|
10 |
For rubber plantation, trees and planted apart: |
One meter
5 meters
10 meters
20 meters
|
11 |
For rubber plant plantation, which soil is most suitable ? |
Marshy land
Sandy soil
Clayey soil
Red oil with excessive phosphorus & humus
|
12 |
Most of natural rubber production in the world is being used: |
For manufacturing water-proof cloth
For manufacturing tyre & tube
For manufacturing toys
For manufacturing utensils
|
13 |
When did natural rubber production started in Sri Lanka (Ceylon)? |
1900 A.D
1850A.D
1880A.D
1857A.D
|
14 |
At present, world's 91.5% percent natural rubber produces in: |
South-east Asia
Sri Lanka
Brazil
African countries
|
15 |
Hevea brasiliensis's smuggled rubber seeds from Brazil were propagated in London's: |
Kew Gardens
LawrenceGardens
WahGardens
MayoGardens
|