What is Rault’s law? How ideal solution obey this law?
Answer: Raoult’s law states that the relative lowering of the vapour pressure of a solvent by dissolving a non-volatile electrolyte is... View Article
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State two effects caused by the refraction of light.
The major effects of refraction of lights are: Bending of light. Change in wavelength of light. Splitting of light rays... View Article
What is meant by the chemical effect of electricity?
Consider conducting a solution, When an electric current is passed through the solution some chemical reaction takes place. The resulting... View Article
What is the difference between medians and altitudes?
An altitude is a perpendicular line segment drawn from a vertex of a triangle to the opposite side. For an... View Article
Is the power of a concave mirror positive or negative?
Consider a point source placed at the focal point of a concave mirror. The initial vergence is then Vi =... View Article
Distinguish between simple tissues and complex tissues.
A group of cells, that are similar in structure and work together to achieve a particular function, forms a tissue.... View Article
Explain the three pathways of the breakdown of glucose.
Answer: Glucose is the most important source of energy for all living things. The food we eat is broken down... View Article
What is broadcasting in terms of agricultural practice?
Answer: Broadcast planting is the method of sowing seeds by scattering them over the surface of the soil. In this process,... View Article
What happens when there are less RBC, WBC, and platelets?
Blood is composed of three basic blood cell types: red blood cells, white blood cells, and platelets. Blood cells are... View Article
How will you separate a mixture of common salt and sand?
Separation of a mixture of common salt and sand? Take a pan and pour the salt and sand mixture into... View Article
Why does the temperature remain constant during boiling?
Answer: The temperature remains constant during boiling of water even though heat is supplied constantly because all the heat energy... View Article
Why nuclear density is not dependent on the mass number?
As the radius of nucleus r∝A31 where A is the mass number. so, if we find the density of the... View Article
The mass of an atom of oxygen is 16.0 u express it in Kg
Mass of one atom of oxygen – 16.0 u 1 u = 1.66 * 10^-27 The mass of an atom... View Article
Why the angle of incidence and angle of reflection equal?
The law of reflection states that when a ray of light reflects off a surface, the angle of incidence is... View Article
Why the atomic masses are based on carbon 12 as standard?
Answer: Initially, scientists used 1/ 16 of the mass of an atom of naturally occurring oxygen as the unit in... View Article
What is destructive inference and constructive inference?
When two waves meet in such a way that their crests line up together, then it’s called constructive interference. The... View Article
Does colour change occurs in double displacement reaction?
A double displacement reaction is a type of reaction in which two reactants exchange ions to form two new compounds.... View Article
What is the function of pituitary gland over all the body?
The pituitary gland is called the ‘master gland’ as the hormones it produces control so many different processes in the... View Article
Write the difference between acceleration and retardation
Acceleration is referred to as the increase in velocity of an object per unit of time. Whereas. Retardation is just... View Article
How to compare an improper fraction and a proper fraction?
A proper fraction is a fraction whose numerator is smaller than its denominator. An improper fraction is a fraction whose... View Article
