Q What are the different forms in which minerals occur in nature?
Ans. Minerals generally occur in nature in the following forms :
Q Name some river valley projects and write the names of the dams built on these rivers.
Ans. River valley projects Dams
Q Fill the names of the correct minerals in the crossword given below :
Down : 1. Gold, 2. Hematite, 3. Mica, 4. Tertiary, 5. Tin.
Q A factory produces aluminium saucepans with plastic handles. It obtains aluminium from a smelter and a plastic component from another factory. All the manufactured saucepans are sent to a warehouse :
Q Select one agro-based and one mineral-based industry in your area.
Ans. One agro-based industry located in my area is the vegetable oil industry. They use sunflower seeds to extract oil. They follow the environment norms by using environment-friendly equipments and send the waste products for recycling.
One mineral-based industry located in my area is the heavy machinery industry. They use iron which they get from the nearby iron ore factory. They follow eco-friendly techniques for manufacturing and dispose the waste in a suitable manner. They do not dump the waste in the nearby river; instead they send it for recycling.