Daily NEET MCQ- July 22, 2022 - NEET MCQ

The sudden increase in current in a Zener diode is due to the rupture of the many covalent bonds present. Therefore, the Zener diode should be connected in reverse bias.

Semiconductor diode can be used as a rectifier. The function of a rectifier is that it converts an alternating current into direct current by allowing the current to pass through in one direction

Aldosterone is secreted by the adrenal cortex and is also known as the salt retaining hormone because its main function is the reabsorption of NaCl in blood and excretion of potassium ions in the blood.

Hyposecretion of Anti-diuretic hormone causes diabetes insipidus, i.e., urine without glucose. Hyposecretion of aldosterone causes Addison’s disease which is characterized by the darkening of the skin.

More sodium ions in the blood or fewer potassium ions in the blood lead to increased blood pressure and blood volume. This condition can be a symptom of the hypersecretion of the salt retaining hormone, i.e., aldosterone.

More sodium ions in the urine or fewer potassium ions in the urine can lead to a decrease in blood pressure and blood volume. This can be due to the hyposecretion of Aldosterone.

A colloidal solution having alcohol as the dispersion medium and a solid substance as the dispersed phase is called an alcohol. For example: A colloidal solution of cellulose nitrate in ethyl alcohol is an alcohol.

In a typical anatropous, the funicle is fused with body of the ovary. It gives a longitudinal rise called the raphe. The funicle contains the vascular strands that provide nourishment to the ovary.

The mass of parenchymatous cells are also known as the Nucellus. It maybe massive (crassinucellate ovule) or thin (tenuinucellate ovule). Its surrounded by one or more teguments.

Since the esterification of carboxylic acids is a reversible reaction, it can be shifted towards the right by using excess of alcohol or by the removal the water formed by distillation.