मराठी
महाराष्ट्र राज्य शिक्षण मंडळएस.एस.सी (इंग्रजी माध्यम) इयत्ता १० वी

Cassiterite is a copper ore. - Science and Technology 1

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प्रश्न

Cassiterite is a copper ore.

पर्याय

  • Right

  • Wrong

MCQ
चूक किंवा बरोबर

उत्तर

Cassiterite is a copper ore- Wrong

shaalaa.com
  या प्रश्नात किंवा उत्तरात काही त्रुटी आहे का?
पाठ 8: Metallugy - Right or Wrong sentence

संबंधित प्रश्‍न

Give the importance of the following for living beings:

Carbon


Metal A has an electronic configuration of 2, 8, 1 and metal B has 2, 8, 8, 2 which is more reactive metal.

Give the effect of heat on their ?
oxides


Metal A has an electronic configuration of 2, 8, 1 and metal B has 2, 8, 8, 2 which is more reactive metal.

Give the effect of heat on their: hydroxide


Metal A has an electronic configuration of 2, 8, 1 and metal B has 2, 8, 8, 2 which is a more reactive metal.

Give the effect of heat on their: carbonates


Explain the following terms:

(c) slag


Name the methods used for purification?


`MnO_2 + 4Al`  …………….


`2AgNO_3` ...........................


state the reactions at the two electrodes ?


State two properties of brass that render it more useful for some purpose than its components.


Name a metal which forms a liquid alloy at ordinary temperature.


What is magnalium? Name the main elements present in it? Write its one use ?


Arrange the metals in (2) in the decreasing order of reactivity.


Explain the term of Metallurgy .

 


The following is a sketch of an electrolytic cell used in the extraction of aluminium :

(a) What is the substance of which the electrode A and B are made?
(b) At which electrode (A or B) is aluminium formed?
(c) What are the two aluminium compounds in the electrolyte C?
(d) Why is it necessary for electrode B to be continuously replaced?


Why does iron or zinc not occur free in nature?


Identify the following method of concentration of ores and explain briefly.


Name the process that is employed to refine aluminium.


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