NTSE SAT Quiz-8 (Social Studies)

NTSE/CTET/Class7/Class8 (Social Studies)

1. Article 17 of the constitution of India provides for
(a) equality before law.
(b) equality of opportunity in matters of public employment.
(c) abolition of titles.
(d) abolition of untouchability.

2. How many permanent members are there in UN Security Council?
(a) Three
(b) Four
(c) Five
(d) Six

3. Social Contract Theory was advocated by
(a) Hobbes, Locke and Rousseau.
(b) Plato, Aristotle and Hegel.
(c) Mill, Bentham and Plato.
(d) Locke, Mill and Hegel.

Class 7 - Geography - Ch1 - Environment - NCERT Solutions

NCERT Chapter Solutions and other Questions and Answers

Q1. Answer the following questions.
(i) What is an ecosystem?
 Answer: It is a system formed by the interaction of all living organisms with each other and with the physical and chemical actors of the environment in which they live, all linked by transfer of energy and material. Large rain forest, grassland, desert, mountains, lake, river, ocean and even a small pond are examples of ecosystem.

(ii) What do you mean by natural environment? 
Answer:  All living and non-living things which exist together naturally form natural environment. It refers to both biotic and abiotic conditions exist on the earth. Land, water, air, plants and animals comprise the natural environment.

(iii) Which are the major components of the environment? 
Answer: Following are the major components of the environment:

1. Natural components: Land, Water, Air, biosphere.
2. Man made components: Bridge, buildings, roads, monuments etc.
3. Activities and interactions of human beings: social, family, political, economic activities etc.