Explanation

In a zero-order reaction, the rate of reaction is independent of the concentration of the reactants. 

The rate of the reaction is equal to the rate constant 𝑘

Explanation

In a bomb calorimeter, reactions are carried out at constant volume.

This is because the calorimeter is designed to keep the volume constant during the reaction.

Any heat released or absorbed during the reaction causes a temperature change, which is measured to determine the heat of the reaction.

The constant volume ensures that the heat measured is solely due to the chemical reaction taking place

Without any external influences like changes in pressure or volume.

Explanation

AB-positive blood type is known as the “universal recipient” because AB-positive patients can receive red blood cells from all blood types.

The blood group system was discovered by Austrian physician Karl Landsteiner in 1901.

He identified the ABO blood group system,

ND5-07-2023

Explanation

Solids are packed together tighter than liquids and gases, hence sound travels fastest in solids

Sound can not travel through vaccum 

Explanation

Karl Landsteiner discovered ABO blood group system.

He was an Austrian scientist.

Karl Landsteiner received Noble Prize in 1930

Blood Group System was discovered in 1900.

Explanation

Sonar stands for "Sound Navigation and Ranging."

It uses high-frequency sound waves (ultrasonic waves) to detect and locate objects underwater

Explanation

The steroid hormones are synthesized in the :

the adrenal cortex,

the gonads,

and the placenta

The steroid hormones are all derived from cholesterol and many are of clinical importance

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Cholesterol is the fundamental building block for all other steroids in the body.

Cholesterol is also the precursor of other important: steroid metabolites including bile salts and steroid hormones.

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ND11-12-2022

Explanation

carbohydrates are essential and efficient fuel to the muscles. 

the circulating form of carbohydrate in the blood is called glucose. 

the storage form of carbohydrates in the liver and muscles is called as glycogen.

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ND11-12-2022

Explanation

Sepulchral means غمگین

Sorrowful means غمگین