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CBSE
Class 10 Science
Chemical Reactions And Equations
Quiz 2
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In the reaction \(PbO+C\rightarrow Pb+CO\)
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C acts as oxidizing agent
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is oxidized
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C acts as a reducing agent
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This reaction does not represent a redox reaction
\(CuO+H_2\rightarrow H_2O+Cu,\) reaction is an example of –
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Redox reaction
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synthesis reaction
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Neutralization
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analysis reaction
. \(H_2SO_4+2NaOH\rightarrow Na_2SO_4+2H_2O\) Above equation is a (i) neutralization reaction (ii) double displacement reaction (iii) Decomposition reaction (iv) addition reaction
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(i) to (iv) all
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(i) and (iii)
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(i) and (ii)
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(ii) and (iv)
Oxidation is a process which involves-
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addition of oxygen
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All are correct
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removal of hydrogen
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loss of electrons
Which of the following is an example of oxidation reaction?
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\(Sn^{+2}-2e^-\rightarrow Sn^{+4}\)
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\(Cl_2+2e^-\rightarrow 2Cl\)
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None of these
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\(Fe^{+3}+e^-\rightarrow Fe^{+2}\)
The reaction in which two compounds exchange their ions to form two new compounds is-
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a double displacement reaction
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a displacement reaction
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a decomposition reaction
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an addition reaction
Which of the following statements is/are false for oxidation reaction?
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None of these
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Removal or loss of electropositive radical or element
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Gain or addition of electronegative radical
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Removal of hydrogen atom
\(Zn+H_2SO_4\left( dil \right) \rightarrow ZnSO_4+H_2\uparrow \) Above equation is a
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Combination reaction
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Decomposition
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Synthesis reaction
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Single displacement reaction
When the gases Sulphur dioxide and hydrogen Sulphide react, the reaction is \(SO_2+2H_2S\rightarrow 2H_2O+3S\) Here hydrogen sulphide is acting as-
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a reducing agent
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a dehydrating agent
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a catalyst
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an oxidizing agent
In the reaction \(Mg+Cl_2\rightarrow MgCl_2\) Chlorine may be regarded as –
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an oxidizing agent
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a reducing agent
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providing an inert medium
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a catalyst
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