Chapter - 3
Mineral and Power Resources
āĻāύিāĻ āĻā§°ু āĻļāĻ্āϤি āϏāĻŽ্āĻĒāĻĻ
Exercises :
āĻŦ্āϝাāϝ়াāĻŽ :
(I) Name any three common minerals used by you every day.
(I) āĻāĻĒুāύি āĻĒ্ā§°āϤিāĻĻিāύে āĻŦ্āĻ¯ā§ąāĻšাā§° āĻā§°া āϝিāĻোāύো āϤিāύিāĻা āϏাāϧাā§°āĻŖ āĻāύিāĻ āĻĒāĻĻাā§°্āĻĨā§° āύাāĻŽ āϞিāĻা।
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(II) What is an ore ? Where are the ores of metallic generally located ?
(II) āĻ āĻ্āϏিāĻেāύ āĻি ? āϧাāϤুā§° āĻ āĻ্āϏিāĻেāύ āϏাāϧাā§°āĻŖāϤে āĻ'āϤ āĻ ā§ąāϏ্āĻĨিāϤ ?
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(III) Name two regions rich in natural gas resources.
(III) āĻĒ্ā§°াāĻৃāϤিāĻ āĻেāĻ āϏāĻŽ্āĻĒāĻĻেā§°ে āϏāĻŽৃāĻĻ্āϧ āĻĻুāĻা āĻ āĻ্āĻāϞ⧰ āύাāĻŽ āϞিāĻা।
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(IV) Which sources of energy would you suggest for
(IV) āĻোāύāĻŦোā§° āĻļāĻ্āϤিā§° āĻā§āϏ⧰ āĻŦাāĻŦে āĻāĻĒুāύি āĻĒā§°াāĻŽā§°্āĻļ āĻĻিāĻŦ
(a) rural areas (b) coastal areas (c) Arid regions
(āĻ) āĻ্ā§°াāĻŽ্āϝ āĻ āĻ্āĻāϞ (āĻ) āĻāĻĒāĻূāϞীāϝ় āĻ āĻ্āĻāϞ (āĻ) āĻļুāώ্āĻ āĻ āĻ্āĻāϞ
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(v) Give five ways in which you can save energy at home.
(v) āĻā§°āϤে āĻļāĻ্āϤি ā§°াāĻšি āĻā§°িāĻŦ āĻĒā§°া āĻĒাঁāĻāĻা āĻāĻĒাāϝ় āĻĻিāϝ়āĻ।
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2. Tick the correct answer.
⧍/ āϏāĻ িāĻ āĻāϤ্āϤ⧰āϤ āĻিāĻ āĻā§°āĻ।
(I) Which one of the following is NOT a characteristic of minerals ?
(I) āϤāϞ⧰ āĻোāύāĻো āĻāύিāĻ āĻĒāĻĻাā§°্āĻĨā§° āĻŦৈāĻļিāώ্āĻ্āϝ āύāĻšāϝ় ?
(a) They are created by natural processes.
(āĻ) āĻĒ্ā§°াāĻৃāϤিāĻ āĻĒ্ā§°āĻ্ā§°িāϝ়াā§°ে āϏৃāώ্āĻি āĻšāϝ়।
(b) They have a definite chemical composition.
(āĻ) āĻāĻšঁāϤ⧰ āĻāĻা āύিā§°্āĻĻিāώ্āĻ ā§°াāϏাāϝ়āύিāĻ āĻāĻ āύ āĻĨাāĻে।
(c) They are inexhaustible.
(āĻ) āϏেāĻāĻŦোā§° āĻ āĻ্āώāϝ়।
(d) Their distribution is uneven.
(āĻ) āĻāĻšঁāϤ⧰ āĻŦিāϤ⧰āĻŖ āĻ āϏāĻŽাāύ।
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(II) Which one of the following is NOT a producer of minerals ?
(II) āϤāϞ⧰ āĻোāύāĻো āĻāύিāĻ āĻĒāĻĻাā§°্āĻĨ āĻā§āĻĒাāĻĻāĻ āύāĻšāϝ় ?
(a) Jharkhand (c) Rajasthan
(āĻ) āĻাā§°āĻāĻŖ্āĻĄ (āĻ) ā§°াāĻāϏ্āĻĨাāύ
(b) Karnataka (d) Andhra Pradesh
(āĻ) āĻā§°্āĻŖাāĻāĻ (āĻ) āĻ āύ্āϧ্ā§°āĻĒ্ā§°āĻĻেāĻļ
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(III) Which one of the following is a leading producer of copper in the world ?
(III) āϤāϞ⧰ āĻোāύāĻো āĻŦিāĻļ্āĻŦā§° āϤাāĻŽā§° āĻā§āĻĒাāĻĻāύāĻাā§°ী āĻĒ্ā§°āϤিāώ্āĻ াāύ ?
(a) Bolivia (c) Chile
(āĻ) āĻŦāϞিāĻিāϝ়া (āĻ) āĻিāϞি
(b) Ghana (d) Zimbabwe
(āĻ) āĻাāύা (āĻ) āĻিāĻŽ্āĻŦাāĻŦুā§ąে
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(IV) Which one of the following practices will NOT conserve LPG in your kitchen.
(IV) āϤāϞ⧰ āĻোāύāĻো āĻĒāĻĻ্āϧāϤিāϝ়ে āĻāĻĒোāύাā§° āĻĒাāĻāĻā§°āϤ āĻāϞ āĻĒি āĻি āϏংā§°āĻ্āώāĻŖ āύāĻā§°ে।
(a) Soaking the dal for some time before cooking it.
(āĻ) āĻĻাāϞি ā§°āύ্āϧাā§° āĻāĻāϤে āĻিāĻু āϏāĻŽāϝ় āϤিāϝ়াāĻ āĻĨোā§ąা।
(b) Cooking food in a pressure Cooker.
(āĻ) āĻĒ্ā§°েāĻাā§° āĻুāĻাā§°āϤ āĻাāĻĻ্āϝ ā§°āύ্āϧা।
(c) Keeping the vegetables chopped before lighting the gas for cooking.
(āĻ) ā§°āύ্āϧা-āĻŦāĻĸ়াā§° āĻŦাāĻŦে āĻেāĻ āĻ্āĻŦāϞোā§ąাā§° āĻāĻāϤে āĻļাāĻ-āĻĒাāĻāϞি āĻāĻা āĻā§°ি ā§°āĻা।
(d) Cooking food in an open pan kept on low flame.
(āĻ) āĻāĻŽ āĻুāĻāϤ ā§°াāĻি āĻোāϞা āĻেā§°াāĻšীāϤ āĻাāĻĻ্āϝ ā§°āύ্āϧা।
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3. Give reasons.
ā§Š/ āĻাā§°āĻŖ āĻĻিāϝ়া।
(I) Environmental aspects must be carefully looked into before building huge dams.
(I) āĻĒ্ā§°āĻাāĻŖ্āĻĄ āĻŦাāύ্āϧ āύিā§°্āĻŽাāĻŖā§° āĻĒূā§°্āĻŦে āĻĒā§°িā§ąেāĻļā§° āĻĻিāĻļāĻŦোā§° āĻাāϞāĻĻā§°ে āĻাāĻŦ āϞাāĻিāĻŦ।
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(II) Most industries are concentrated around coal mines.
(II) āĻŦেāĻিāĻাāĻ āĻāĻĻ্āϝোāĻেāĻ āĻāϝ়āϞা āĻāύিā§° āĻāĻļে-āĻĒাāĻļে āĻেāύ্āĻĻ্ā§°ীāĻূāϤ āĻšৈ āĻāĻে।
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(III) Petroleum is referred to as "black gold".
(III) āĻĒেāĻ্ā§°āϞিāϝ়াāĻŽāĻ "āĻ'āϞা āϏোāĻŖ" āĻŦুāϞি āĻোā§ąা āĻšāϝ়।
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(IV) Quarrying can become a major environmental concern.
(IV) āĻļিāϞ⧰ āĻুā§ąেā§°ী āĻā§°াāĻো āĻĒā§°িā§ąেāĻļā§° āĻ্āώেāϤ্ā§°āϤ āĻāĻ āĻĄাāĻā§° āĻিāύ্āϤাā§° āĻŦিāώāϝ় āĻšৈ āĻĒā§°িāĻŦ āĻĒাā§°ে।
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4. Distinguish between the followings.
ā§Ē/ āϤāϞāϤ āĻĻিāϝ়া āĻāĻĨাāĻŦোā§°ā§° āĻŽাāĻāϤ āĻĒাā§°্āĻĨāĻ্āϝ ā§°াāĻāĻ।
(i) Conventional and non conventional sources of energy
(i) āĻļāĻ্āϤিā§° āĻāϤাāύুāĻāϤিāĻ āĻā§°ু āĻ āĻāϤাāύুāĻāϤিāĻ āĻā§āϏ
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(ii) Biogas and natural gas
(ii) āĻৈā§ą āĻেāĻ āĻā§°ু āĻĒ্ā§°াāĻৃāϤিāĻ āĻেāĻ
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(iii) Ferrous and nonferrous minerals
(iii) āϞৌāĻš āĻā§°ু āĻ āϞৌāĻš āĻāύিāĻ āĻĒāĻĻাā§°্āĻĨ
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(iv) Metallic and nonmetallic minerals
(iv) āϧাāϤু āĻā§°ু āĻ āϧাāϤু āĻāύিāĻ āĻĒāĻĻাā§°্āĻĨ
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5. Activity
ā§Ģ/ āĻাā§°্āϝ্āϝāĻāϞাāĻĒ (i) Use pictures from old magazines to show different kinds of fuels used by us in our lives and display them on your bulletin board.
(āĻ) āĻāĻŽাā§° āĻীā§ąāύāϤ āĻŦ্āĻ¯ā§ąāĻšাā§° āĻā§°া āĻŦিāĻিāύ্āύ āϧ⧰āĻŖā§° āĻāύ্āϧāύ āĻĻেāĻুā§ąাāĻŦāϞৈ āĻĒুā§°āĻŖি āĻāϞোāĻāύীā§° āĻāĻŦি āĻŦ্āĻ¯ā§ąāĻšাā§° āĻā§°ি āĻāĻĒোāύাā§° āĻŦুāϞেāĻিāύ āĻŦā§°্āĻĄāϤ āĻĒ্ā§°āĻĻā§°্āĻļāύ āĻā§°āĻ।
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(ii) Design a poster highlighting energy conservation tips you would take for your school.
(ii) āĻāĻĒোāύাā§° āĻŦিāĻĻ্āϝাāϞāϝ়ā§° āĻŦাāĻŦে āĻāĻĒুāύি āϞ’āĻŦāϞāĻীāϝ়া āĻļāĻ্āϤি āϏংā§°āĻ্āώāĻŖā§° āĻিāĻĒāĻāϏāĻŽূāĻš āĻāĻ্āĻ্āĻŦāϞ āĻā§°ি āĻāĻāύ āĻĒোāώ্āĻাā§° āĻĄিāĻাāĻāύ āĻā§°āĻ।
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(iii) Salma's class took up an action campaign to do an energy audit of their school by surveying electricity consumption. They prepared survey sheets for the students of the school.
(iii) āĻাāϞāĻŽাā§° āĻļ্ā§°েāĻŖীāĻোā§ąে āĻŦিāĻĻ্āϝুā§ āĻŦ্āĻ¯ā§ąāĻšাā§°ā§° āĻā§°ীāĻĒ āĻā§°ি āϤেāĻঁāϞোāĻā§° āĻŦিāĻĻ্āϝাāϞāϝ়ā§° āĻļāĻ্āϤি āĻ āĻĄিāĻ āĻā§°াā§° āĻŦাāĻŦে āĻāĻ āĻাā§°্āϝ্āϝ āĻ āĻিāϝাāύ āĻšাāϤāϤ āϞৈāĻিāϞ। āĻŦিāĻĻ্āϝাāϞāϝ়āĻāύ⧰ āĻাāϤ্ā§°-āĻাāϤ্ā§°ীā§° āĻŦাāĻŦে āĻā§°ীāĻĒ āĻŦāĻšী āĻĒ্ā§°āϏ্āϤুāϤ āĻā§°ে।
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Question Type By - Kishor Nath
Post ID: DABP002257