Question:
Write a brief note on salt.
Answer:
Salt is a dietary mineral essential for animal life. It is composed primarily of sodium chloride. Salt is produced in different forms they are unrefined salt or sea salt, refined salt or table salt and iodized salt.
Salt is a crystalline solid, white, pale pink or light grey in color. It is obtained by evaporation of sea water, usually in shallow basins warmed by sunlight.
It is also obtained from rock deposits.
Salt is used in more than 14,000 commercial applications other than in cooking. It is used in the manufacture of pulp and paper and setting dyes in
textiles and fabric. It is also used in producing soaps and detergents and for making snow-covered roads safe in winter. Salt plays an essential role in our daily lives.
Resources
Q 1.
What are population pyramids? How do they help in understanding about the population of a country?
Q 2.
What is a water-cycle?
Q 3.
Distinguish between Ferrous and nonferrous minerals
Q 4.
What are the four Characteristics of resources?
Q 5.
What is meant by arable land?
Q 6.
What are natural resources?
Q 7.
What are the classifications of minerals?
Q 8.
Resources have value- discuss ?
Q 9.
What are the two main classifications of power resources?
Q 10.
Why are resources distributed unequally over the earth?
Q 11.
Differentiate between Ubiquitous and localised resources?
Q 12.
What is Nomadic herding?
Q 13.
What are the advantages in mixed cropping?
Q 14.
Distinguish between Conventional and non conventional sources of energy
Q 15.
Write a brief note on the Ministry of Human Resource Development in India.
Q 16.
What is the average density of population in India?
Q 17.
Why is population growth slowing in united Kingdoms?
Q 18.
Name any two steps that government has taken to conserve plants and animals.
Q 19.
Ganga-Brahmaputra plain of India is an overpopulated region.
Q 20.
What is meant by the term industry?
Q 21.
Write a brief note on Intensive subsistence farming.
Q 23.
How are mineral extracted from earth?
Q 24.
Mention the different types of resources.
Q 25.
What can we do to conserve resources?
Q 26.
Name the 3 sectors of activities done by people.
Q 27.
What are the factors that determine the pattern in which a particular region is used?
Q 28.
Mention some methods that are used to conserve soil
Q 29.
Why is population study essential?
Q 30.
What are abiotic resources?
Q 31.
What is mixed cropping or mixed farming?
Q 32.
What is a resource?
Q 33.
Name the fibre crops and name the climatic conditions required for their growth.
Q 34.
Which sources of energy would you suggest for (a) rural areas (b) coastal areas (c) Arid Regions?
Q 35.
What are the activities under the secondary sector?
Q 36.
What do the 3Rs stand for in context with conservation of natural resources?
Q 38.
Name a few landforms.
Q 39.
Differentiate between emigrants and immigrants.
Q 40.
What is resource conservation?
Q 41.
Why are human resources important?
Q 42.
The world population has grown very rapidly. Why?
Q 43.
Complete the sentences below using some of the following words, sparsely, favourable, fallow, artificial, fertile, natural, extreme, densely
Q 44.
Name any three common minerals used by you every day.
Q 45.
What is an ore? Where are the ores of metallic minerals generally located?
Q 46.
Give reason for Most industries are concentrated around coal mines.
Q 47.
How was the word agriculture, coined?
Q 48.
How does land fulfil our needs?
Q 49.
Sixty per cent of the world's people stay in just 10 countries. Name the countries with the percentage of world population.
Q 50.
What is sustainable development?
