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
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.
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.
Which sources of energy would you suggest for (a) rural areas (b) coastal areas (c) Arid Regions?
