Write common uses of minerals.
Minerals are important in many industries. Minerals used in gems are usually very hard. These are then set in varying styles of jewellery. Iron and copper are metals used in almost everything. Copper is present in everything from coins to pipes and electricity wires. Silicon, obtained from the mineral quartz, is the base of computer industry. Aluminium, obtained from bauxite ore, and its alloys are used in aeroplanes due to their light weight. Aluminium is also used in kitchen cookware.
Give Reason for Environmental aspects must be carefully looked into before building huge dams.
Pick the Correct Asnwer
(a) Which one of the following is NOT a characteristic of minerals?
(i) They are created by natural processes
(ii) They have a definite chemical composition
(iii) They are inexhaustible
(iv) Their distribution is uneven
(b) Which one of the following is NOT a producer of mica?
(i) Jharkhand (ii) Karnataka (iii) Rajasthan (iv) Andhra Pradesh
(c) Which one of the following is a leading producer of copper in the world?
(i) Bolivia (ii) Ghana (iii) Chile (iv) Zimbabwe
(d) Which one of the following practices will NOT conserve LPG in your kitchen?
(i) Soaking the dal for some time before cooking it
(ii) Cooking food in a pressure cooker
(iii) Keeping the vegetables chopped before lighting the gas for cooking
(iv) Cooking food in an open pan kept on low flame
Which sources of energy would you suggest for (a) rural areas (b) coastal areas (c) Arid Regions?
Answer the following questions.
(i) Name any three common minerals used by you every day.
(ii) What is an ore? Where are the ores of metallic minerals generally located?
(iii) Name two regions rich in natural gas resources.
(iv) Which sources of energy would you suggest for
(a) rural areas (b) coastal areas (c) arid regions
(v) Give five ways in which you can save energy at home.
Give reasons.
(i) Environmental aspects must be carefully looked into before building huge dams.
(ii) Most industries are concentrated around coal mines.
(iii) Petroleum is referred to as "black gold".
(iv) Quarrying can become a major environmental concern.
Tick the correct answer.
(i) Which one of the following is not a characteristic of minerals?
(a) They are created by natural processes.
(b) They have a definite chemical composition.
(c) They are inexhaustible.
(d) Their distribution is uneven.
(ii) Which one of the following is not a producer of mica?
(a) Jharkhand (b) Karnataka
(c) Rajasthan (d) Andhra Pradesh
(iii) Which one of the following is a leading producer of copper in the world?
(a) Bolivia (b) Ghana
(c) Chile (d) Zimbabwe
(iv) Which one of the following practices will not conserve LPG in your kitchen?
(a) Soaking the dal for some time before cooking it.
(b) Cooking food in a pressure cooker.
(c) Keeping the vegetables chopped before lighting the gas for cooking.
(d) Cooking food in an open pan kept on low flame.
Fill in the blank spaces given to complete each sentence.
(i) Metallic minerals are classified into …………….. and ………….
(ii) Gold and silver are …………. minerals.
(iii) Minerals can be extracted by …………. ,…………. or …………
(iv) Deep bores dug to reach mineral deposits are called …………
(v) Metallic minerals are generally found in ……….. and…………..rock formations.
(vi) The mineral deposits in North America are located in three zones: …………… the Appalachian region and the mountain ranges of the West.
(vii) ……………. is the largest producer of bauxite in the world.
(viii) ………….. is the most abundantly available fossil fuel.
(ix) Petroleum is drilled from ………
(x) Bhakra Nangal is an important …………….. station in India.
(xi) ……………. and……… are radioactive metals.