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  Class 11 Chemistry   Is entropy of universe constant? Answer:-   No, the entropy of the universe always increases in the course of every spontaneous change. It is the second law of thermodynamics. Define combined form of first and second law of thermodynamics. Answer: - In thermodynamics, the combined law of thermodynamics, also called the Gibb’s fundamental equation, is a mathematical summation of the first law of thermodynamics and the second law of thermodynamics summed into a single concise mathematical statement as dU- TdS + PdV ≤ 0 Where dU is a variation in internal energy. T is temperature, dS is variation in entropy P is pressure dV is variation in volume of a simple working body in which there is neither flows of particles out of the body nor external forces, other than gravity, acting on the body. In theoretical structure, in addition to the obvious inclusion of the first two laws, the combined law incorporates the implications of the zeroth law, via temperature T and the

 

  What Is Humalin ? Humulin  is the man-made insulin, which is made by the recombinant DNA by genetic engineering. Humulin  R (insulin (human recombinant)) is a hormone that is produced in the body used to treat diabetes.   A small piece of circular DNA called a plasmid is extracted from the bacteria cell or yeast. Humulin N is injected under the skin. It should not be injected into muscle or veins. Doses of insulin are measured in units. U-100 insulins, including Humulin N, contain 100 units/mL. With the Humulin N U-100 vial, it is important to use a syringe that is marked for U-100 insulin preparations.