SELECT * FROM question_mgmt as q WHERE id=4367 AND status=1 SELECT id,question_no,question,chapter FROM question_mgmt as q WHERE courseId=12 AND subId=16 AND chapterId=367 and ex_no='1' AND status=1 ORDER BY CAST(question_no AS UNSIGNED) CBSE Free NCERT Solution of 8th science Materials: Metals and Non-Metals in the following table some substances are given i

Question:

In the following Table some substances are given in Column I. In Column II some uses are given. Match the items in column I with those in Column II.

Column I Column II
 (i)  Gold
 (ii) Iron
 (iii) Aluminium
 (iv) Carbon
 (v) Copper
 (vi) Mercury		  (a) Thermometers
 (b) Electric Wire
 (c) Wrapping food
 (d) Jewellery
 (e) Machinary
 (d) Fuel

 

Answer:

Column I Column II
 (i)  Gold
 (ii) Iron
 (iii) Aluminium
 (iv) Carbon
 (v) Copper
 (vi) Mercury		  (d) Jewellery
 (e) Machinary
 (c) Wrapping food
 (d) Fuel
 (b) Electric Wire
 (a) Thermometers

  1. Gold is used in making jewelry and making ornaments.
  2. Iron is a hard metal, it is used in machinery.
  3. Aluminium is used in wrapping food items, it protect the food items from the bacteria and the humidity.
  4. Carbon is used as a fuel, in the form of coal and petroleum.
  5. Copper is a metal which is used in making electric wire because copper is a good conductor of heat and electricity.
  6. Mercury is a metal which is liquid at room temperature. It is used in thermometers usually.


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