Multiple Choice QuestionsUnit of first order rate constant is
mol L s
mol-1 L-1 s-1
mol L-1 s-1
s-1 or min-1
D.
s-1 or min-1
Unit of rate cosntant for nth order reaction is mol(1 - n)L(n - 1) s-1
where, n = order of reaction
For 1st order reaction, n = 1
Unit of rate constant for 1st order reaction is s-1 or min-1.
The size of colloidal particles is in between
10-7 - 10-9 cm
10-9 - 10-11 cm
10-5 - 10-7 cm
10-2 - 10-3 cm
The stability of lyophilic colloids is due to which of the following?
Charge on their particles
Large size of their particles
Smaller size of their particles
A layer of medium of dispersion on their particles
Milk is
fat dispersed in water
water dispersed in fat
water dispersed in oil
fat dispersed in fat
After partial roasting the sulphide of copper is reduced by
reduction by carbon
electrolysis
self-reduction
cyanide process
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