Daily NEET MCQ- March 27, 2022 - NEET MCQ

whole passage is divided into two parts one is conducting region and other is respiratory region. Conducting zone do not play any role in exchange of gases but respiratory zone does. Alveolar duct & alveoli are the part of respiratory tree and are involved in gaseous exchange.

As there is a rise in temperature the viscosity of liquid increases while the viscosity of gas decreases. In liquids, due to rise in temperature, molecules have high thermal energy so the can overcome intermolecular attractions.

The formula of force required to maintain the flow of layers is given by the formula F = ηAdu/dz, where η is the coefficient of viscosity, A is the area of contact and du/dz is the velocity gradient. So by substituting we get an answer as 0.25dz/du.

The type of flow in liquids when each path flows in a different path, that do not interfere with each other is laminar flow. At any point in the fluid, the velocity of a fluid is constant is a characteristic of laminar flow.

Homo erectus erectus, also known as Java man used fire for hunting, protection, and cooking. It had complete erect posture and lived in caves. It used tools of bones and stones.

Cranial capacity was 800-1000 c.c. Chin was present and the jaw was prognathous. It was also known as an erect ape-man because of complete erect posture.

The scientific name of Peking man is Homo erectus pekinensis. It was given by scientist Mayer. It also had another name called Sinanthropus erectus given by Davidson Black.

W.C. Pei discovered the fossil of Peking man from China whereas Eugene Dubois found the fossil of Java man. Dr. Leakey discovered the fossil of Homo habilis. Mayer gave the scientific name for Peking man.

When the sun or the moon is seen through a thin veil of high clouds, haloes, i.e. rings, are seen. These are formed due to the reflection of light by the icy crystals present in the atmosphere. So, this is the cause of rings around the sun or the moon.

The sequence of colors in the secondary rainbow is the reverse of that in the primary rainbow because a secondary rainbow is formed by two internal reflections of light in water droplets while a primary rainbow is formed by just one total internal reflection.