Question

Glucose when reduced with HI and red Phosphorus gives :
(A) N hexane
(B) N heptane
(C) N octane
(D) N pentane

Answer 1

Hint: Hydrogen iodide (HI) is a hydrogen halide and a diatomic molecule. Hydroiodic acid, or hydriodic acid, is a powerful acid made up of aqueous solutions of HI. The difference between hydrogen iodide and hydroiodic acid is that the former is a gas under normal circumstances, whilst the latter is an aqueous solution of the gas. They're interchangeable. One of the major sources of iodine and a reducing agent, HI is utilised in organic and inorganic synthesis.

Complete answer:
Glucose has the chemical formula \[{C_6}{H_{12}}{O_6}\] and is a simple sugar. The most prevalent monosaccharide, a kind of carbohydrate, is glucose. Plants and most algae generate glucose from water and carbon dioxide with the help of sunshine, and it's used to make cellulose in cell walls, which is the most prevalent carbohydrate on the planet. Glucose is the most significant source of energy in all species' energy metabolism.
Red phosphorus is a reducing agent, as you know. As a result, when glucose is reduced, n-hexane is produced.
${C_6}{H_{12}}{O_6}\xrightarrow[\Delta ]{{HI}}n - C{H_3} - C{H_2} - C{H_2} - C{H_2} - C{H_2} - C{H_3}$
In a redox chemical reaction, a reducing agent (also known as a reductant or reducer) is an element or molecule that loses (or "donates") an electron to an electron recipient (oxidising agent). When a reducing substance loses electrons in a redox process, it is oxidised. Oxidizing agents "oxidise" (or "reduce") reducing agents. Reducers "oxidise" (that is, reduce) oxidizers. The term 'reduction' originally refers to the elimination of oxygen from a chemical, thus the name. The contemporary concept of donating electrons is a broadening of this concept, recognising that additional elements may perform a chemical role comparable to oxygen.

Note :
Hexane is an organic molecule with the chemical formula \[{C_6}{H_{14}}\]. It is a straight-chain alkane containing six carbon atoms. Hexane is a common component in gasoline. When pure, it is a white liquid with a boiling point of around 69 C (156 F). It is frequently used as a non-polar solvent that is inexpensive, somewhat safe, essentially unreactive, and quickly evaporated.