Question

The unique feature of hot dilute soap is that there is no free ____ in it.
A.N
B.O
C.C
D.S

Answer 1

Hint: Soap is a fatty acid salt that is used to make a variety of cleaning and lubricating products. Soaps are surfactants that are commonly used in the home for washing, bathing, and other types of housekeeping. Soaps are used in industry as thickeners, components of some lubricants, and precursors to catalysts.

Complete answer:
Soap, when used for cleaning, solubilizes particles and grime, allowing them to be separated from the item being cleaned. Soap kills microorganisms in handwashing by disorganizing their membrane lipid bilayer and denaturing their proteins as a surfactant when slathered with a little water. It also emulsifies oils so that they can be washed away by running water.
Haldane proposed the theory of hot dilute soup to describe prebiotic oceans in which organic bio-molecules were formed from simple inorganic compounds. The atmosphere was devoid of oxygen, and the combination of carbon dioxide, ammonia, and ultraviolet radiation produced a plethora of organic compounds. The sea became a 'hot dilute soup' with a high concentration of organic monomers and polymers.
Hot dilute soaps are the organic biomolecules which are produced from simple inorganic compounds and it doesn't consist of any free nitrogen in it.
Thus, the answer is option A: N.

Note:
Soap is made by combining fats and oils with a base, whereas detergent is made by combining chemical compounds in a mixer. For millennia, humans have used soap. There is evidence that soap-like materials were produced in ancient Babylon around 2800 BC.