QA . Fill in the blanks.
1- are non living solid substances found in rocks.
2- The non-metallic minerals are mostly found in .
3- is the largest producer of manganese in the world.
QB. State true and false.
1- Copper is mixed with iron and nickel to make stainless steel.
2- India is the largest producer of bauxite in the world.
3- Mica is a bad conducter of electricity
QC . Match the columns.
1 - Iron a - mineral fuel
2 - Coal b - black gold
3 - Petroleum c - ferrous minerals
Q D . Answer in one word .
1- Largest coal producing country in the world .
2- Largest natural gas producing country in the world .
3- Largest copper producing country in the world .
Q E . Answer the following questions.
1- What is an ore ?
2- Write one difference between metallic and non metallic minerals .
3- Write a short note on natural gas .
4 - Write any two ways to conserve mineral resources .
Answers
Answer:
1- What is an ore ?
ANS: An ore is a mineral which has a valuable metal inside it. Ores are usually extracted by being mined. They can sometimes be found on the Earth's surface. Most ores are chemical compounds such as oxides or sulfides.
______________________
2- Write one difference between metallic and non metallic minerals .
ANS: Metallic Minerals are minerals in which metal elements are present in their raw form. Non-metallic minerals do not contain any metal substances in them. When metallic minerals are melted a new product is formed. ... Non-metallic minerals are often found embedded in young fold mountains and sedimentary rocks.
______________________
3- Write a short note on natural gas .
ANS: Natural gas, colourless highly flammable gaseous hydrocarbon consisting primarily of methane and ethane. It is a type of petroleum that commonly occurs in association with crude oil. A fossil fuel, natural gas is used for electricity generation, heating, and cooking and as a fuel for certain vehicles.
______________________
4 - Write any two ways to conserve mineral resources .
ANS: 1. Use of minerals in a planned and sustainable manner. Recycling of metals.
2. Use of alternative renewable substitutes. Technology should be improved to use the low grade ores profitably.