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.
Write a brief note on Intensive subsistence farming.
Q 3.
Which are the two main climatic factors responsible for soil formation?
Q 4.
Mention a few minerals and their uses.
Q 5.
Which sources of energy would you suggest for (a) rural areas (b) coastal areas (c) Arid Regions?
Q 6.
Write a brief note on wind power ?
Q 7.
Which industry is often referred to as the backbone of modem industry and why?
Q 8.
Distinguish between Ferrous and nonferrous minerals
Q 10.
Name a few landforms.
Q 11.
Discuss the role of any two factors influencing population change.
Q 12.
What are the two main classifications of power resources?
Q 13.
In India agriculture is a primary activity.
Q 14.
Why people are considered a resource?
Q 15.
What is meant by the term industry?
Q 16.
What is a resource?
Q 17.
Give a brief description of soil composition or the layers of soil ?
Q 18.
Different crops are grown in different regions.
Q 19.
Distinguish between the followings.
Primary activities and tertiary activities.
Q 20.
What is Nomadic herding?
Q 22.
What are natural resources?
Q 23.
Differentiate between emigrants and immigrants.
Q 24.
Give Reason for Environmental aspects must be carefully looked into before building huge dams.
Q 25.
What are the four Characteristics of resources?
Q 26.
How was the word agriculture, coined?
Q 27.
Write a brief note on the Ministry of Human Resource Development in India.
Q 28.
Why are resources distributed unequally over the earth?
Q 29.
What is resource conservation?
Q 30.
Why are human resources important?
Q 31.
Write any two reasons for land degradation today?
Q 32.
Give reason for Petroleum is referred to as black gold.
Q 33.
What are the advantages in mixed cropping?
Q 34.
How can one increase agricultural production?
Q 35.
Mention some methods that are used to conserve soil
Q 36.
Rows of trees planted in the coastal areas to check the wind movement is called intercropping ?
Q 37.
Which are the main factors which influence the location of an industry?
Q 38.
How are mineral extracted from earth?
Q 39.
What do the 3Rs stand for in context with conservation of natural resources?
Q 40.
What are the factors that determine the pattern in which a particular region is used?
Q 41.
What are bio reserves?
Q 42.
What are the different characteristics of population composition?
Q 43.
Why cotton textile industry rapidly expanded in Mumbai?
Q 44.
Distinguish between the followings
(i) Agro-based and mineral based industry.
Q 45.
What are the 3 categories of Commercial farming?
Q 46.
Write a note on Munna Lai and his farm land.
Q 47.
Name the different rocks that minerals occur in?
Q 48.
What is wind power?
Q 49.
Why is population study essential?
Q 50.
What is the average density of population in India?
