D:-6-8 hrs
Correct Answer:- Option-A
:-The protein content in field latex is

D: 3.5
Correct Answer:-Question Cancelled
Questiong8:-Ribbing is given on the rubber sheet to

B:-Increase surface area
C:-Easy removal of water
D:-All of (1), (2) and (3}
Correct Answer:- Option-D
Question89:-Permissible level of dirt in ISNR 5L is
A:-0.45
5
C:-0.55
D:-0.6
Correct Answer:-Question Cancelled
Question90:-India is the largest consumer of natural rubber.
A:-fourth
B:-second
C:-third
D:-none of the above
Correct Answer:- Option-B
Question91:-Particle size of cream rubber is in the range of
A:-450-475 nm
B:-400-425 nm
C:-500-525 nm
D:-200-225 nm
Correct Answer:- Option-A
Question92:-The moisture content of rubber wood when reduced by kiln drying it improves
A:-strength
B:-makes it lighter
C:-resistant to cracking
D:-all of (1), (2) and (3)
Correct Answer:- Option-D
Question93:-The maximum coagulum content in centrifuged latex as per BIS is
A:-0.03
B:-0.05
C:-0.07
D:-0.08
Correct Answer:- Option-B
Question94:-Economic life period of rubber plantation is
A:-32 years
B:-40 yrs
C:-45 yrs
D:-None of the above
Correct Answer:- Option-A

Question95:-The major pollutants from a natural rubber processing factory have high organic content and emit an offensive
smell due to

A:-The biodegradation of the organic matter
B:-Oxidative degradation of rubber
C:-Biodegradation of rubber

D:-All of (1), (2) and (3}

Correct Answer:- Option-A

Question96:-The gas from the biogas plant using sheet effluents contains toxic hydrogen sulphide (H2S}, the percentage of
which is