Chapter - 3

Mineral and Power Resources

āĻ–āύিāϜ āφ⧰ু āĻļāĻ•্āϤি āϏāĻŽ্āĻĒāĻĻ

Exercises :

āĻŦ্āϝাāϝ়াāĻŽ :

(I)    Name any three common minerals used by you every day.

(I) āφāĻĒুāύি āĻĒ্ā§°āϤিāĻĻিāύে āĻŦ্āĻ¯ā§ąāĻšাā§° āϕ⧰া āϝিāĻ•োāύো āϤিāύিāϟা āϏাāϧাā§°āĻŖ āĻ–āύিāϜ āĻĒāĻĻাā§°্āĻĨā§° āύাāĻŽ āϞিāĻ–া।

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(II)    What is an ore ? Where are the ores of metallic generally located ?

(II) āĻ…āĻ•্āϏিāϜেāύ āĻ•ি ? āϧাāϤুā§° āĻ…āĻ•্āϏিāϜেāύ āϏাāϧাā§°āĻŖāϤে āĻ•'āϤ āĻ…ā§ąāϏ্āĻĨিāϤ ?

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(III)    Name two regions rich in natural gas resources.

(III) āĻĒ্ā§°াāĻ•ৃāϤিāĻ• āĻ—েāĻ› āϏāĻŽ্āĻĒāĻĻেā§°ে āϏāĻŽৃāĻĻ্āϧ āĻĻুāϟা āĻ…āĻž্āϚāϞ⧰ āύাāĻŽ āϞিāĻ–া।

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(IV)    Which sources  of energy would you suggest for 

(IV) āĻ•োāύāĻŦোā§° āĻļāĻ•্āϤিā§° āĻ‰ā§ŽāϏ⧰ āĻŦাāĻŦে āφāĻĒুāύি āĻĒā§°াāĻŽā§°্āĻļ āĻĻিāĻŦ

                (a) rural areas                     (b) coastal areas                     (c) Arid regions

                (āĻ•) āĻ—্ā§°াāĻŽ্āϝ āĻ…āĻž্āϚāϞ                (āĻ–) āωāĻĒāĻ•ূāϞীāϝ় āĻ…āĻž্āϚāϞ                 (āĻ—) āĻļুāώ্āĻ• āĻ…āĻž্āϚāϞ

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(v) Give five ways in which you can save energy at home.

(v) āϘ⧰āϤে āĻļāĻ•্āϤি ā§°াāĻšি āϕ⧰িāĻŦ āĻĒā§°া āĻĒাঁāϚāϟা āωāĻĒাāϝ় āĻĻিāϝ়āĻ•।

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2.  Tick the correct answer.

⧍/ āϏāĻ িāĻ• āωāϤ্āϤ⧰āϤ āϟিāĻ• āϕ⧰āĻ•।

(I)    Which one of the following is NOT a characteristic of minerals ?

(I) āϤāϞ⧰ āĻ•োāύāϟো āĻ–āύিāϜ āĻĒāĻĻাā§°্āĻĨā§° āĻŦৈāĻļিāώ্āϟ্āϝ āύāĻšāϝ় ?

        (a) They are created by natural processes.

        (āĻ•) āĻĒ্ā§°াāĻ•ৃāϤিāĻ• āĻĒ্ā§°āĻ•্ā§°িāϝ়াā§°ে āϏৃāώ্āϟি āĻšāϝ়।

        (b) They have a definite chemical composition.

        (āĻ–) āχāĻšঁāϤ⧰ āĻāϟা āύিā§°্āĻĻিāώ্āϟ ā§°াāϏাāϝ়āύিāĻ• āĻ—āĻ āύ āĻĨাāĻ•ে।

        (c) They are inexhaustible.

        (āĻ—) āϏেāχāĻŦোā§° āĻ…āĻ•্āώāϝ়।

        (d) Their distribution is uneven.

        (āϘ) āχāĻšঁāϤ⧰ āĻŦিāϤ⧰āĻŖ āĻ…āϏāĻŽাāύ।

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(II)    Which one of the following is NOT a producer of minerals ?

(II) āϤāϞ⧰ āĻ•োāύāϟো āĻ–āύিāϜ āĻĒāĻĻাā§°্āĻĨ āĻ‰ā§ŽāĻĒাāĻĻāĻ• āύāĻšāϝ় ?

        (a) Jharkhand                  (c) Rajasthan

        (āĻ•) āĻাā§°āĻ–āĻŖ্āĻĄ                    (āĻ—) ā§°াāϜāϏ্āĻĨাāύ

        (b) Karnataka                   (d) Andhra Pradesh

        (āĻ–) āϕ⧰্āĻŖাāϟāĻ•                     (āϘ) 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⧰ āĻ•োāύāϟো āĻŦিāĻļ্āĻŦā§° āϤাāĻŽā§° āĻ‰ā§ŽāĻĒাāĻĻāύāĻ•াā§°ী āĻĒ্ā§°āϤিāώ্āĻ াāύ ?

        (a) Bolivia            (c) Chile

        (āĻ•) āĻŦāϞিāĻ­িāϝ়া        (āĻ—) āϚিāϞি

        (b) Ghana             (d) Zimbabwe

        (āĻ–) āϘাāύা                (āϘ) āϜিāĻŽ্āĻŦাāĻŦুā§ąে

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(IV) Which one of the following practices will NOT conserve LPG in your kitchen.

(IV) āϤāϞ⧰ āĻ•োāύāϟো āĻĒāĻĻ্āϧāϤিāϝ়ে āφāĻĒোāύাā§° āĻĒাāĻ•āϘ⧰āϤ āĻāϞ āĻĒি āϜি āϏংā§°āĻ•্āώāĻŖ āύāϕ⧰ে।

        (a) Soaking the dal for some time before cooking it.

        (āĻ•) āĻĻাāϞি ā§°āύ্āϧাā§° āφāĻ—āϤে āĻ•িāĻ›ু āϏāĻŽāϝ় āϤিāϝ়াāχ āĻĨোā§ąা।

        (b) Cooking food in a pressure Cooker.

        (āĻ–) āĻĒ্ā§°েāϚাā§° āĻ•ুāĻ•াā§°āϤ āĻ–াāĻĻ্āϝ ā§°āύ্āϧা।

        (c) Keeping the vegetables chopped before lighting the gas for cooking.

        (āĻ—) ā§°āύ্āϧা-āĻŦāĻĸ়াā§° āĻŦাāĻŦে āĻ—েāĻ› āϜ্āĻŦāϞোā§ąাā§° āφāĻ—āϤে āĻļাāĻ•-āĻĒাāϚāϞি āĻ•āϟা āϕ⧰ি ā§°āĻ–া।

        (d) Cooking food in an open pan kept on low flame.

        (āϘ) āĻ•āĻŽ āϜুāχāϤ ā§°াāĻ–ি āĻ–োāϞা āĻ•েā§°াāĻšীāϤ āĻ–াāĻĻ্āϝ ā§°āύ্āϧা।

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3.       Give reasons.

ā§Š/     āĻ•াā§°āĻŖ āĻĻিāϝ়া।

(I)    Environmental aspects must be carefully looked into before building huge dams.

(I) āĻĒ্ā§°āĻ•াāĻŖ্āĻĄ āĻŦাāύ্āϧ āύিā§°্āĻŽাāĻŖā§° āĻĒূā§°্āĻŦে āĻĒā§°িā§ąেāĻļā§° āĻĻিāĻļāĻŦোā§° āĻ­াāϞāĻĻā§°ে āϚাāĻŦ āϞাāĻ—িāĻŦ।

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(II)    Most industries are concentrated around coal mines.

(II) āĻŦেāĻ›িāĻ­াāĻ— āωāĻĻ্āϝোāĻ—েāχ āĻ•āϝ়āϞা āĻ–āύিā§° āφāĻļে-āĻĒাāĻļে āĻ•েāύ্āĻĻ্ā§°ীāĻ­ূāϤ āĻšৈ āφāĻ›ে।

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(III)    Petroleum is referred to as "black gold".

(III) āĻĒেāϟ্ā§°āϞিāϝ়াāĻŽāĻ• "āĻ•'āϞা āϏোāĻŖ" āĻŦুāϞি āĻ•োā§ąা āĻšāϝ়।

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(IV)    Quarrying can become a major environmental concern.

(IV) āĻļিāϞ⧰ āĻ•ুā§ąেā§°ী āϕ⧰াāϟো āĻĒā§°িā§ąেāĻļā§° āĻ•্āώেāϤ্ā§°āϤ āĻāĻ• āĻĄাāϙ⧰ āϚিāύ্āϤাā§° āĻŦিāώāϝ় āĻšৈ āĻĒā§°িāĻŦ āĻĒাā§°ে।

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4. Distinguish between the followings.

ā§Ē/ āϤāϞāϤ āĻĻিāϝ়া āĻ•āĻĨাāĻŦোā§°ā§° āĻŽাāϜāϤ āĻĒাā§°্āĻĨāĻ•্āϝ ā§°াāĻ–āĻ•।

(i) Conventional and non conventional sources of energy

(i) āĻļāĻ•্āϤিā§° āĻ—āϤাāύুāĻ—āϤিāĻ• āφ⧰ু āĻ…āĻ—āϤাāύুāĻ—āϤিāĻ• āĻ‰ā§ŽāϏ

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(ii) Biogas and natural gas

(ii) āϜৈā§ą āĻ—েāĻ› āφ⧰ু āĻĒ্ā§°াāĻ•ৃāϤিāĻ• āĻ—েāĻ›

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(iii) Ferrous and nonferrous minerals

(iii) āϞৌāĻš āφ⧰ু āĻ…āϞৌāĻš āĻ–āύিāϜ āĻĒāĻĻাā§°্āĻĨ

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(iv) Metallic and nonmetallic minerals

(iv) āϧাāϤু āφ⧰ু āĻ…āϧাāϤু āĻ–āύিāϜ āĻĒāĻĻাā§°্āĻĨ

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5. Activity

ā§Ģ/ āĻ•াā§°্āϝ্āϝāĻ•āϞাāĻĒ (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) āφāĻŽাā§° āϜীā§ąāύāϤ āĻŦ্āĻ¯ā§ąāĻšাā§° āϕ⧰া āĻŦিāĻ­িāύ্āύ āϧ⧰āĻŖā§° āχāύ্āϧāύ āĻĻেāĻ–ুā§ąাāĻŦāϞৈ āĻĒুā§°āĻŖি āφāϞোāϚāύীā§° āĻ›āĻŦি āĻŦ্āĻ¯ā§ąāĻšাā§° āϕ⧰ি āφāĻĒোāύাā§° āĻŦুāϞেāϟিāύ āĻŦā§°্āĻĄāϤ āĻĒ্ā§°āĻĻā§°্āĻļāύ āϕ⧰āĻ•।

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(ii) Design a poster highlighting energy conservation tips you would take for your school.

(ii) āφāĻĒোāύাā§° āĻŦিāĻĻ্āϝাāϞāϝ়ā§° āĻŦাāĻŦে āφāĻĒুāύি āϞ’āĻŦāϞāĻ—ীāϝ়া āĻļāĻ•্āϤি āϏংā§°āĻ•্āώāĻŖā§° āϟিāĻĒāĻ›āϏāĻŽূāĻš āωāϜ্āϜ্āĻŦāϞ āϕ⧰ি āĻāĻ–āύ āĻĒোāώ্āϟাā§° āĻĄিāϜাāχāύ āϕ⧰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) āĻ›াāϞāĻŽাā§° āĻļ্ā§°েāĻŖীāϟোā§ąে āĻŦিāĻĻ্āϝুā§Ž āĻŦ্āĻ¯ā§ąāĻšাā§°ā§° āϜ⧰ীāĻĒ āϕ⧰ি āϤেāĻ“ঁāϞোāϕ⧰ āĻŦিāĻĻ্āϝাāϞāϝ়ā§° āĻļāĻ•্āϤি āĻ…āĻĄিāϟ āϕ⧰াā§° āĻŦাāĻŦে āĻāĻ• āĻ•াā§°্āϝ্āϝ āĻ…āĻ­িāϝাāύ āĻšাāϤāϤ āϞৈāĻ›িāϞ। āĻŦিāĻĻ্āϝাāϞāϝ়āĻ–āύ⧰ āĻ›াāϤ্ā§°-āĻ›াāϤ্ā§°ীā§° āĻŦাāĻŦে āϜ⧰ীāĻĒ āĻŦāĻšী āĻĒ্ā§°āϏ্āϤুāϤ āϕ⧰ে।

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Question Type By - Kishor Nath

Post ID: DABP002257