Daily NEET MCQ- May 12, 2022 - NEET MCQ

Intensive properties are those which don’t depend on the amount of matter in the sample. For eg: temperature, pressure, density.

Extensive properties are those which depend on the amount of matter in the sample. For eg: Volume, Internal energy, mass.

The product contains one term which is extensive, or which depends on mass, so we can say that their product also depends on mass and is therefore extensive.

When a pressure P is exerted through a volume V the work done is given by P ΔV, so here pressure is 5 atm and volume is a 50-metre cube. The work that is done is 5 atm X 50-metre cube = 250 Newton metre.

Force is defined as the product of pressure and the surface area so here as pressure is 3 atm and surface area is 10-metre square. The force that is applied equals 3 atm x 10-metre square = 30 Newton.

The expression for work done is given by pressure x volume difference, here an ideal gas has a volume difference of 4 litres at 5 ATM pressure. So the work done = 10 – 6 liters x 5atm = 20 Newton metre.

We know that ΔH = ΔU + nRΔT; where ΔH is the enthalpy, ΔU is the internal energy, n is the number of moles, R is the universal gas constant and ΔT is the temperature difference. So enthalpy is 10 KJ + 20KJ = 30 KJ.

As glycolysis was discovered by three scientists named Embden, Meyerhof and, Parnas, so it also came to be known as the EMP pathway with the initial letters of the discoverers.

After the interaction of many co-enzymes and cytochromes, the glucose is at last reduced to two molecules of pyruvic acid which is further reduced to different usable forms in the mitochondria through the Krebs cycle.

In glycolysis, two molecules of NADH are formed at the time of oxidation of glyceraldehyde 3-phosphate to 1, 3-diphosphoglycerate which give rise to 6 ATP. This is converted into respective ATP forms during Electron Transport System.