Daily NEET MCQ- September 13, 2022 - NEET MCQ

Oxidation is the loss of electrons by an atom, ion or molecule. It is also known as de-electronation. Here in the above given chemical reaction Cu⁺² + Zn → Cu + Zn⁺², the oxidation half-reaction is Zn → Zn⁺².

When zinc is placed in copper nitrate solution the intensity of the blue colour is produced and copper iron is deposited on zinc. This is a Redox reaction between zinc and an aqueous solution of copper nitrate occurring in a beaker.

Oxidant or oxidizing agent is a chemical substance which can accept one or more electrons and causes oxidation of some other species. Here to accept electrons from zinc, so copper is an oxidizing agent.

The two forces involved in Newton’s third law are the cause force and the reaction force. The cause force acts on the contact surface or the contact body by the parent body. Whereas the reaction force acts on the parent body by the contact body.

The two bodies in contact will follow Newton’s third law of motion. The third law states that for every action there is an equal and opposite reaction. The two bodies will experience each other’s reaction forces in opposite directions.

From Newton’s third law we know that for every for every action, there is an equal and opposite reaction. From this we can say that the bat experiences a force of 5 N.

The atria are the two upper chambers of the heart. The walls of the atria secrete a hormone known as atrial natriuretic factor or ANF. Its function is to reduce blood pressure to maintain homeostasis.

ANF or atrial natriuretic factor is secreted by the heart. It is secreted by the walls of the atria. PRL is secreted by the anterior pituitary gland, MSH by the pars intermedia and CCK by the GI tract.

ANS or atrial natriuretic factor is secreted by the walls of the atria of the heart. Its effect is to dilate the blood vessels. As a result, blood is provided more space to flow, and hence the blood pressure decreases.

Atrial natriuretic factor or ANF is secreted by the walls of the atria of the heart. Its effect is to dilate blood vessels and hence decrease blood pressure. Adrenaline and noradrenaline increase blood pressure.