मराठी

Aluminium is used for making cooking utensils. Which of the following properties of aluminium are responsible for the same? Good thermal conductivity - Science

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प्रश्न

Aluminium is used for making cooking utensils. Which of the following properties of aluminium are responsible for the same?

  1. Good thermal conductivity
  2. Good electrical conductivity
  3. Ductility
  4.  High melting point

पर्याय

  • (i) and (ii)

  • (i) and (iii)

  • (ii) and (iii)

  • (i) and (iv)

MCQ

उत्तर

(i) and (iv)

Explanation - 

Aluminium is used for making cooking utensils because it is a good conductor of heat and has a high melting point of about 660 °C. So, when on top of a stove the aluminium vessel would not melt while cooking.

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पाठ 3: Metals and Non-metals - Multiple Choice Questions [पृष्ठ १८]

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एनसीईआरटी एक्झांप्लर Science [English] Class 10
पाठ 3 Metals and Non-metals
Multiple Choice Questions | Q 3. | पृष्ठ १८

संबंधित प्रश्‍न

Iron is
(a) More reactive than zinc
(b) More reactive than aluminium
(c) Less reactive than copper
(d) Less reactive than aluminium


Which gas is produced when dilute hydrochloric acid is added to a reactive metal? 


You must have seen tarnished copper vessels being cleaned with lemon or tamarind juice. Explain why these sour substances are effective in cleaning the vessels.


Differentiate between metal and non-metal on the basis of their chemical properties.


State whether the following statement is true or false:
Non-metals react with dilute acids to produce a gas which burns with a 'pop' sound.


Name two metals which can, however, liberate hydrogen gas from very dilute nitric acid.


Give one example, with equation, of the displacement of hydrogen by a metal from an acid.


You are given a solution of AgNO3. Which of the following do you think cannot displace Ag from AgNO3solution?
(a) Magnesium
(b) Zinc
(c) Gold
(d) Copper


Metal A burns in air, on heating, to form an oxide A2O3 whereas another metal B burns in air only on strong heating to form an oxide BO. The two oxides A2O3 and BO can react with hydrochloric acid as well as sodium hydroxide solution to form the corresponding salts and water.
(a) What is the nature of oxide A2O3?
(b) What is the nature of oxide BO?
(c) Name one metal like A.
(b) Name one metal like B.


If A, B, C, D, E, F, G, H, I, J and K represent metals in the decreasing order of their reactivity, which one of them is most likely to occur in a free state in nature?


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