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Source : IGNOU B.Lib Material

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#1. What is Broad Classification?

#2. Identify the correct order.

#3. What is a Discipline?

#4. Ranganathan postulates that there are three kinds- of subjects. What are those?

#5. Basic subjects are subjects which:

#6. Identify the basic subjects from the following.

Library Science, Physics, Algebra; Ayurvedic Medicine, Marxian Economics, Psycho-analysis are some of the basic subjects.

Disciplines are further divided into basic subjects or main classes

#7. Which of the following is not an example for complex subject?

A Complex Subject, on the other hand, is a two phased subject and is formed by the combination of two or more basic or compound. subjects, and made to express the relation between them, but excluding, the case when one of the subjects forms an isolate of the other, formed by subject device.

#8. What is Phase analyis?

#9. What is an isolate?

An isolate is the ultimate division of knowledge.


A solitary, unattached idea, which cannot be further, subdivided, and by itself it cannot form a subject, is called an isolate. For example, the terms wheat, child, India are isolates as by themselves they are vague. These have meanings only in the context of a main class. For example, wheat diseases, child psychology or India: history have meanings. An isolate is the ultimate division of knowledge. Going back a little, Ranganathan defines a compound subject as a basic: subject forms a compound subject having one or more isolates, An isolate is the context of a basic subject forms a compound subject and a Basic Subject is a basic subject without an isolate idea

#10. What is a facet?

Isolates are grouped in what are called facets on the basis of-common characteristics. A acet is thus a totality of isolates obtained on the basis of a single train of characteristics of a given entity.

Ranganathan defined facet as “A generic term used to denote any component- be it a basic subject or an isolate – of a compound subject, and also its respective ranked forms, terms, and members”.

We may speak of Basic Facet, Isolate Facet, Geographical Facet, Language Facet, Educational Facet Property Facet, Organ Facet, Cultivar Facet, etc.


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