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

Divide the metals Cu, Zn, Ca, Mg, Fe, Na, Li into three groups, namely reactive metals, moderately reactive metals and less reactive metals. - Science and Technology 1

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प्रश्न

Divide the metals Cu, Zn, Ca, Mg, Fe, Na, Li into three groups, namely reactive metals, moderately reactive metals and less reactive metals.

तक्ता
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उत्तर

Reactive metals Moderately reactive metals Less reactive metals
Ca Fe Cu
Na Zn  
Li Mg  
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पाठ 8: Metallurgy - Exercises [पृष्ठ १०९]

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बालभारती Science and Technology 1 [English] Standard 10 Maharashtra State Board
पाठ 8 Metallurgy
Exercises | Q 11 | पृष्ठ १०९

संबंधित प्रश्‍न

What do you observe when ferrous sulphate solution is added to an aqueous solution of sodium hydroxide.


Fill in the blank

When a piece of copper is added to silver nitrate solution, it turns ............in colour.


How will you obtain Magnesium oxide from magnesium.

Also give balanced equations for the reactions


What do you observe when Magnesium ribbon is burnt in oxygen.


Write chemical equation for the event.

Iron filings are dropped in aqueous solution of copper sulphate.


Write the chemical equation for the event.

A reaction was brought about between ferric oxide and aluminium.


State what is meant by the ‘reactivity series of metals’


With reference to Water explain with suitable examples of how the reactivity of the metals could be differentiated.


Select the correct answer for the statement given below:

The catalyst used in the catalytic reaction involving the reactants nitrogen and hydrogen.


Complete the statement by filling in the blank with the correct word:

The metal which reacts with steam and the reaction is reversible is ________.


Explain the following reaction with the balanced equation.

Sodium burns in air


Explain the following reaction with the balanced equation.

Magnesium reacts with dil HCl


Explain the following reaction with the balanced equation.

Sulphur burns in air


Compound X and aluminium are used to join railway tracks.

  1. Identify the compound X
  2. Name the reaction
  3. Write down its reaction.

A metal M does not liberate hydrogen from acids but reacts with oxygen to give a black colour product. Identify M and black coloured product and also explain the reaction of M with oxygen.


Give the steps involved in the extraction of metals of low and medium reactivity from their respective sulphide ores.


Explain the following

  1. Reactivity of Al decreases if it is dipped in HNO3
  2. Carbon cannot reduce the oxides of Na or Mg
  3. NaCl is not a conductor of electricity in solid state whereas it does conduct electricity in aqueous solution as well as in molten state
  4. Iron articles are galvanised.
  5. Metals like Na, K, Ca and Mg are never found in their free state in nature.

An element A burns with golden flame in air. It reacts with another element B, atomic number 17 to give a product C. An aqueous solution of product C on electrolysis gives a compound D and liberates hydrogen. Identify A, B, C and D. Also write down the equations for the reactions involved.


Metal ‘A’ has electronic configuration 2, 8, 1 and metal ‘B’ has electronic configuration 2, 8, 8, 2. Out of these, which metal is more reactive? Write the reaction of this metal with dilute HCl acid.


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