i) Mumbai high oil fields
ii) Gujarat coast
iii) Bassein oil field
iv) Aliabet oil field
v) Ankleshwar
vi) Cambay - Lumu region
vii) Ahmedabad - Kalol region

a) The major jute producing areas are in West Bengal and is concentrated along the Hooghly river.
b) Andhra Pradesh, Bihar, Uttar Pradesh, Assam, Chhattisgarh and Odisha are the other Jute goods producing areas.

Based on carbon content, it is classified into the following types.
(i) Anthracite: contains 80 to 90% carbon
(ii) Bituminous: contains 60 to 80% carbon
(iii) Lignite: contains 40 to 60% carbon
(iv) Peat: contains less than 40% carbon

i) Natural gas is naturally occurring hydro carbon gas mixture consisting primarily of methane, but commonly includes varying amounts of other higher alkanes. Sometimes it includes at small percentage of carbon dioxide, nitrogen and hydrogen sulphides.
ii) It is formed when layers of decomposed plants and animals are exposed to intense heat and pressure over thousands of years.

Manganese is used in the manufacturing of iron and steel, bleaching powder, insecticides, paints and batteries.

a) Mineral is a natural substance of organic or inorganic origin with definite chemical and physical properties.
b) Minerals are broadly grouped under two categories. They are metallic and non-metallic minerals.

a) Any matter or energy derived from the environment that is used by living things including humans is called a natural resource.
b) The two types of resources are Renewable resources and Non-renewable resources.