Daily NEET MCQ- July 1, 2022 - NEET MCQ

At terminal velocity, Mg = viscous force. Therefore, 0.001*10^-3*10 = 6πηrv ∴ v = 10^-5/ 6πηr = 10^-5 / ( 6π*1.8 X 10^-5*0.001) = 29.47 m/s.

Resistance force by a fluid on a body = 6πηrv, where η is coefficient of viscosity, r is radius of body & v is its velocity. This doesn’t depend on density.
Another way to think of this is to imagine a hollow and solid sphere of the same radius falling through air at the same speed. The resistance offered by air will be the same on both as they have the same surface area exposed and are moving at the same speed.

We know that the shear strain rate is v/l, where v is velocity of layer and l is distance of that layer from layer having zero speed Here, the layer in contact with pipe wall will have zero speed. Therefore, the velocity will increase as one goes away from the wall and will be maximum at centre.

The surface tension in liquids decreases with rise in temperature. As surface tension decreases, molecules become more active when temperature increases and surface tension becomes zero at critical temperature T_C.

Surface Tension is the tendency of a fluid to occupy least surface area as possible. It is defined as the force per unit distance. So, the spherical shape that is acquired by a water drop is due to surface tension.

Surface Tension is the tendency of a fluid to occupy least surface area as possible. It is defined as the force per unit distance. So, the units of surface tension are Newton/meter in S.I. the system, Dyne/cm in C.G.S system.

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.

As glycolysis is the beginning step of respiration that occurs in the cytoplasm and due to which the pyruvate is formed, therefore it is considered as the universal pathway in biological systems.

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 NADH are formed that are equivalent to six ATP. Along with this, there is also the production of 2 more ATP after the transfer of high energy phosphate into ADP adds to this thus making the total of eight.