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Maharashtra State BoardSSC (English Medium) 10th Standard

I) Observe the Following Reaction and Answer the Following Questions. C U S O 4 ( a Q ) + F E ( S ) → F E S O 4 ( a Q ) + C U ( S ) A) Identify and Write the Type of Chemical Reaction - Science and Technology 1

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Question

i) Observe the following reaction and answer the following questions.
`CuSO_4 (aq) + Fe (s) →  FeSO_4(aq) + Cu (s)`
a) Identify and write the type of chemical reaction.
b) Write the definition of above reaction.

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Solution

a) displacement reaction.
b) The reaction in which the place of the ion of a less reactive element in a compound is taken by another more reactive element by formation of its own ions, is called displacement reaction.

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2018-2019 (March) Balbharati Model Question Paper Set 2

RELATED QUESTIONS

Reaction of iron nails with copper sulphate solution is an example of
(a) Combination reaction
(b) Decomposition reaction
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CuSO4(aq) + Zn(s)  ZnSO4(aq) + Cu(s) is an example of a decomposition reaction.


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A + BC → AC + B

 


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What happens when a zinc strip is dipped into a copper sulphate solution?
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When a strip of red-brown metal X is placed in a colourless salt solution YNO3 then metal Y is set free and a blue coloured salt solution X(NO3)2 is formed. The liberated metal Y forms a shining white deposit on the strip of metal X.
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(3) Blue 

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(2) observe transmission of heat through strips of zinc and copper. 

(3) prepare solution of zinc sulphate and hang strip of copper into it. 

(4) prepare solution of copper sulphate and hang strip of zinc into it. 


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Displacement reaction


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(i) Zn

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(iv) Mg.

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Match the following

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REACTION TYPE
NH4OH(aq) + CH3COOH(aq) → CH3COONH4(aq) + H2O(l) Single Displacement
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C2H4(g) + 4O2(g) → 2CO2(g) + 2H2 O(g) + Heat Thermal decomposition

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The above reaction is an example of:


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\[\ce{CuSO4 (aq) + Pb (s) -> \underline{}\underline{}\underline{}\underline{}\underline{}\underline{} + \underline{}\underline{}\underline{}\underline{}\underline{}\underline{}}\]

Name the chemical reaction type.


The colour of the solution observed after 30 minutes of placing zinc metal in copper sulphate solution is ______.


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