Daily NEET MCQ- July 9, 2022 - NEET MCQ

Bond order is given by the formula that the total number of bonds between two atoms / the total number of resonating structures, the bond order = 3/2 = 1.5, we can say that there is a relation between resonance and bond order through this equation.

Nitrenes are obtained by the thermolysis of azides. They are neutral monovalent nitrogen species in which nitrogen atom has 2 and shared pair of electrons with a monovalent atom or group attached and they are as reactive as carbenes.

When all the properties of a molecule cannot be shown by a single structure and two or more structures are required to show all the properties of that molecule, then the structures are called resonating structures are canonical forms and the molecule is referred to as resonance hybrid.

Amplitude = Ae^-bt/2m& Energy = 1/2kA²e^-bt/m. For amplitude to become half, e^-bt/2m = 1/2
Or bT/2m = ln(2)
Or T = 2m ln(2)/b For energy to become half, e^-bt/m = 1/2
Or t = m ln(2)/b = T/2.

Energy in presence of damping forces is given by: 1/2kA²e^-bt/m. This shows that kinetic energy decreases exponentially with time.

We know from Stoke’s law that damping force is proportional to velocity of a body. It also depends on the surface area in contact with the source of particles causing damping, like air.

Syncytium is a cytoplasmic mass of cells that are multinucleated. This multinucleate condition arises due to absence of cytokinesis or cell division following karyokinesis or nuclear division.

The presence of a relatively inextensible cell wall prevents furrowing in plant cells. The plant cells instead undergo separation by cell plate formation that starts from the center of the plant cell.

Animal cells undergo furrowing during cell division or cytokinesis. The furrow deepens, ultimately forming two cells. The presence of a relatively inextensible cell wall prevents furrowing in plant cells.

The major organelles of the cell, such as the nucleolus, the Golgi apparatus and the endoplasmic reticulum, are reformed after the sister chromatids have separated and migrated to the opposite poles, during telophase.