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

Explain the following reaction with the balanced equation. Dry aluminium hydroxide is ignited at 1000 °C

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प्रश्न

Explain the following reaction with the balanced equation.

Dry aluminium hydroxide is ignited at 1000 °C

टीपा लिहा
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उत्तर

When dry aluminium hydroxide is calcined by at 1000 °C, pure aluminium oxide, called alumina is obtained.

\[\ce{\underset{\text{Aluminium hydroxide}}{2Al(OH)_{3(s)}} ->[heat][1000 °C] \underset{\text{Aluminium oxide}}{Al2O_{3(s)}} + \underset{\text{Water vapour}}{3H2O_{(g)}}}\]

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पाठ 8: Metallugy - Explain the following reactions with the balanced equations [पृष्ठ ३१]

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एससीईआरटी महाराष्ट्र Science and Technology Part 1 [English] Standard 10 Maharashtra State Board
पाठ 8 Metallugy
Explain the following reactions with the balanced equations | Q 10. | पृष्ठ ३१

संबंधित प्रश्‍न

Name the following:

Main ore of aluminium.


Define the Ore.


Why does a new aluminium vessel lose shine so soon after use?


Name one metal which is extracted by:

Electrolytic reduction.


Name one metal which is extracted by:

Reduction with heat alone.


The non-metal present in steel is ______.


How is manganese extracted from manganese dioxide, MnO2? Explain with the help of an equation.


Explain giving equation, what happens when:

A mixture of Cu2O and Cu2S is heated.


Name two ores of zinc. Write the names of the chemical compounds present in them and give their chemical formulae.


Metals X and Y can be recovered from the anode mud left behind after the electrolytic refining of copper metal. The coins made of metal X look new even after several years of use but the coins made of metal Y lose their shine gradually and get blackened soon. When metal X is alloyed with a small amount of metal Y, it becomes hard and hence suitable for making ornaments. What are metals X and Y? Also state the colour of metal X.


Give the principles of the hydrolytic method.


Some metallic oxides can be reduced by hydrogen, carbon and carbon monoxide and some cannot. Explain.


Give reasons, why aluminum is used in:

In making ships


Aluminum is used in thermite welding:

what is thermit?


What is meant by refining of metals?


What is galvanized iron.


Complete the incomplete statement with missing word:
Metals form positive ions while non- metals ______.


Find the odd one out and give its explanation.


Identify who I am!

Ore of Aluminum- ______


Explain in brief types of extraction of less reactive metals according to their reactivity.


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