Name the quantity to which the unit of calorie is related to.
A calorie is a unit of heat. Calorie The calorie was originally defined as the amount of heat required at... View Article
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Write a short paragraph on the harms caused by microorganisms.
We all know that microorganisms are present everywhere. Let us read more about them. What are microorganisms? Microorganisms are minute... View Article
What is the name of the hormone secreted by the corpus luteum?
Progesterone is the name of the hormone secreted by the corpus luteum. The corpus luteum is a yellowish mass left... View Article
What is the sum of any two? (a) Odd numbers. (b) Even numbers.
An even number is a number that can be divided into two equal groups. An odd number is a number that cannot be divided into two equal groups.... View Article
What is the molecular formula of the most common disaccharide?
Disaccharides are the carbohydrates that on hydrolysis gives two same or different carbohydrates. Their general formula is C12H22O11. Disaccharide A... View Article
Give an example of element or substance that does not corrode.
Stainless steel is an alloy of iron, chromium and nickel, and therefore it is rust-resistant. Corrosion Corrosion is the process... View Article
What happens when the temperature of the solution is increased?
When the temperature of a solution is increased, the average kinetic energy of the molecules that make up the solution... View Article
Name one inorganic molecule which is known as ozonised oxygen?
Ozone is known as ozonised oxygen. Ozone Ozone (O3) is a highly reactive gas composed of three oxygen atoms. It... View Article
Name the organelle That is associated with aerobic respiration.
Mitochondria are organelles whose membranes are specialized for aerobic respiration. Oxidation of chemical substances takes place in mitochondria. It absorbs... View Article
Give an example of a physical change and explain the mechanism.
In a physical change, no new substance is formed. Hence, the tearing of paper is a physical change. Physical change... View Article
Write 10 lines on the usefulness of microorganisms in our lives.
Micro-organisms are too small to be seen through naked eyes. However, they are vital to plants and the environment. Given... View Article
Explain the terms analogous and homologous organs with examples.
Homologous structures share a similar embryonic origin. Analogous organs have a similar function. Homologous organs Homologous organs are those organs... View Article
What is obtained from the combination of apoenzyme and coenzyme?
The apoenzyme is the protein part of a conjugated enzyme, and the coenzyme is the non-protein part. The combination of... View Article
eliminate theta between a=cos(theta-alpha) and b=sin(theta-beta)
Theta – Alpha = cos^-1(a) (equ.1) Theta – Beta = sin^-1(b) (equ.2) Subtracting the equations, we get Beta – Alpha... View Article
Describe double circulation in human beings. Why is it necessary?
In human beings, the blood goes through the heart twice during each cycle, i.e. the blood passes through the human... View Article
Why are alkali metals considered to be a powerful reducing agent?
The valence electronic configuration of alkali metals is ns1. They can attain the noble gas electronic configuration by removing one... View Article
In the equation k = ZAB e-Ea /RT, what does e-Ea /RT represent?
e-Ea/RT represents the fraction of molecules with energies equal to or greater than Ea. Chemical kinetics and rate of a... View Article
What is the electronic configuration of chromium in[Cr(NH3)6]3+?
The electronic configuration of chromium in [Cr(NH3)6]3+ is [Ar]3d54s1. Chromium is a chemical element with the symbol Cr and atomic... View Article
Give an example of a chemical compound that dissolves in ethanol.
LiCl and MgCl2 both are soluble in ethanol. Explanation Alcohol forms hydrogen bonding, and it also has a covalent character, so... View Article
When will the conductivity become equal to the molar conductivity?
Conductivity becomes equal to molar conductivity when 1 cm3 of the solution placed between two large electrodes of 1 cm2... View Article
