problems involving proportions

a, b, c and d are said to be proportion if a : b = c : d. a and d are called the extremes, b and c are called the means. a, b, c and d are called first proportion, second proportion, third proportion and fourth proportion respectivel..

Proportion - Four quantities a, b, c and d are said to be in proportion, if a:b=c:d. a and d are called extremes of the proportion. b and c are called means of the proportion. a:b=c:d Product of extremes is equal to the product of means in a proportion..

Proportion - a, b, c and d are said to be proportion if a : b = c : d. a and d are called the extremes, b and c are called the means. a, b, c and d are called first proportion, second proportion, third proportion and fourth proportion resp..

The extraction of a metal from its ore involves the following step..

Processes Involved in Transport - There are some physical principles and biological processes that explain the transport of materials across the plant body. They are as follow..

Steps Involved in Photosynthesis - Photosynthesis has two main reactions: Light reaction Dark reacti..

Reactions Involving A Slow Step - If k 1 is very much less than k 2 that is k 1 << k 2 then the intermediate B is transformed into the product C as soon as it is formed. In such cas..

Equilibrium Involving Chemical Systems - In reversible reactions chemical reactions take place in both the forward and backward directions. For example, the reaction between gaseous hydrogen and iodine vapours to give gaseous hydrogen iodide is a reversible reaction and may be expressed a..

Photosynthesis has two main reactions: Light reaction Dark reacti..

On hydration silicates and aluminates of calcium get converted to their respective hydrated colloidal gels. At the same time, hydrolysis precipitates calcium hydroxide and aluminium hydroxide. This calcium hydroxide binds calcium silicate particles together. On the other hand, alumi..