Related Questions

Natural rubber is obtained from latex, which is a colloidal dispersion of rubber in water. Which of the following is used as a coagulant in latex?
A Ammonium alum
B Potassium alum
C Both A & B
D Neither A nor B
Rubber latex is an example of __________ fluid.
A Dilatent
B Newtonion
C Pseudoplastic
D Bingham plastic
Rubber latex is an example of a __________ .fluid.
A Pseudoplastic
B Bingham plastic
C Dilatent
D Newtonion
Rubber is the coagulated Juice or latex or an equatorial tree called
A Ebony
B Mahogany
C Cinchona
D Hevea
Styrene-butadiene-rubber (SBR) as compared to natural rubber has
A Poorer tensile strength
B Poorer resistance to oxidation
C Greater amount of heat build-up under heavy loading
D All of the above
Styrene butadiene rubber (SBR) as compared to natural rubber has
A Poor tensile strength
B Poorer resistance
C Greater amount of heat build up heavy loading
D All of the above
If the time required for half change is inversely proportional to the square of initial concentration and the velocity depends on the units in which the concentration term is expressed, then the order of reaction is
A 1
B 2
C 3
D 0
Osmosis is the flow of solution from higher concentration to a solution of lower concentration through a semi permeable membrane. What is incorrect in this statement?
A Exact concentration of solution is not given
B Character of semi permeable membrane is not given
C The flow of solution is not possible through semi permeable membrane
D All are incorrect
At very high concentration of enzymes, the rate of fermentation chemical reaction is __________ the concentration of reactants.
A Independent of
B Directly proportional to
C Inversely proportional to
D Proportional to the square of
If the time required to change the concentration of reactant to half its original value is independent of the initial concentration, the order of reaction is
A Zero
B One
C Two
D Three

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